Abstract

The design of a fibre Bragg grating based manometry catheter for in-vivo diagnostics in the human colon is presented. The design is based on a device initially developed for use in the oesophagus, but in this instance, longer sensing lengths and increased flexibility were required to facilitate colonoscopic placement of the device and to allow access to the convoluted regions of this complex organ. The catheter design adopted allows the number of sensing regions to be increased to cover extended lengths of the colon whilst maintaining high flexibility and the close axial spacing necessary to accurately record pertinent features of peristalsis. Catheters with 72 sensing regions with an axial spacing of 1 cm have been assembled and used in-vivo to record peristaltic contractions in the human colon over a 24hr period. The close axial spacing of the pressure sensors has, for the first time, identified the complex nature of propagating sequences in both antegrade (towards the anus) and retrograde (away from the anus) directions in the colon. The potential to miss propagating sequences at wider sensor spacings is discussed and the resultant need for close axial spacing of sensors is proposed.

© 2009 OSA

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    [CrossRef] [PubMed]

2009 (2)

2008 (1)

P. G. Dinning, M. M. Szczesniak, and I. J. Cook, “Proximal colonic propagating pressure waves sequences and their relationship with movements of content in the proximal human colon,” Neurogastroenterol. Motil. 20(5), 512–520 (2008).
[CrossRef] [PubMed]

2007 (1)

P. G. Dinning, S. E. Fuentealba, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Sacral nerve stimulation induces pan-colonic propagating pressure waves and increases defecation frequency in patients with slow-transit constipation,” Colorectal Dis. 9(2), 123–132 (2007).
[CrossRef] [PubMed]

2005 (1)

C. Chojetzki, M. Rothhardt, J. Ommer, S. Unger, K. Schuster, and H.-R. Mueller, “High-reflectivity draw-tower fiber Bragg gratings—arrays and single gratings of type II,” Opt. Eng. 44(6), 060503 (2005).
[CrossRef]

2004 (3)

S. Hervé, G. Savoye, A. Behbahani, A. M. Leroi, P. Denis, and P. Ducrotté, “Results of 24-h manometric recording of colonic motor activity with endoluminal instillation of bisacodyl in patients with severe chronic slow transit constipation,” Neurogastroenterol. Motil. 16(4), 397–402 (2004).
[CrossRef] [PubMed]

S. S. Rao, P. Sadeghi, J. Beaty, and R. Kavlock, “Ambulatory 24-hour colonic manometry in slow-transit constipation,” Am. J. Gastroenterol. 99(12), 2405–2416 (2004).
[CrossRef] [PubMed]

P. G. Dinning, P. A. Bampton, J. Andre, M. L. Kennedy, D. Z. Lubowski, D. W. King, and I. J. Cook, “Abnormal predefecatory colonic motor patterns define constipation in obstructed defecation,” Gastroenterology 127(1), 49–56 (2004).
[CrossRef] [PubMed]

2003 (1)

A. M. De Schryver, M. Samsom, and A. I. Smout, “Effects of a meal and bisacodyl on colonic motility in healthy volunteers and patients with slow-transit constipation,” Dig. Dis. Sci. 48(7), 1206–1212 (2003).
[CrossRef] [PubMed]

2002 (4)

R. Hagger, D. Kumar, M. Benson, and A. Grundy, “Periodic colonic motor activity identified by 24-h pancolonic ambulatory manometry in humans,” Neurogastroenterol. Motil. 14(3), 271–278 (2002).
[CrossRef] [PubMed]

S. Levy, “Drug outlets remain leader in laxative sales,” Drug Top. 8, (2002).

W. G. Thompson, E. J. Irvine, P. Pare, S. Ferrazzi, and L. Rance, “Functional gastrointestinal disorders in Canada: first population-based survey using Rome II criteria with suggestions for improving the questionnaire,” Dig. Dis. Sci. 47(1), 225–235 (2002).
[CrossRef] [PubMed]

E. J. Irvine, S. Ferrazzi, P. Pare, W. G. Thompson, and L. Rance, “Health-related quality of life in functional GI disorders: focus on constipation and resource utilization,” Am. J. Gastroenterol. 97(8), 1986–1993 (2002).
[CrossRef] [PubMed]

2001 (3)

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Prolonged multipoint recording of colonic manometry in the unprepared human colon - providing insight into potentially relevant pressure wave parameters,” Am. J. Gastroenterol. 96(6), 1838–1848 (2001).
[CrossRef] [PubMed]

R. B. Williams, A. Pal, J. G. Brasseur, and I. J. Cook, “Space-time pressure structure of pharyngo-esophageal segment during swallowing,” Am. J. Physiol. Gastrointest. Liver Physiol. 281(5), G1290–G1300 (2001).
[PubMed]

S. S. Rao, P. Sadeghi, J. Beaty, R. Kavlock, and K. Ackerson, “Ambulatory 24-h colonic manometry in healthy humans,” Am. J. Physiol. Gastrointest. Liver Physiol. 280(4), G629–G639 (2001).
[PubMed]

2000 (3)

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, D. J. deCarle, and I. J. Cook, “Spatial and temporal organization of pressure patterns throughout the unprepared colon during spontaneous defecation,” Am. J. Gastroenterol. 95(4), 1027–1035 (2000).
[CrossRef] [PubMed]

P. Chiarelli, W. Brown, and P. McElduff, “Constipation in Australian women: prevalence and associated factors,” Int. Urogynecol. J. 11(2), 71–78 (2000).
[CrossRef]

I. J. Cook, Y. Furukawa, V. Panagopoulos, P. J. Collins, and J. Dent, “Relationships between spatial patterns of colonic pressure and individual movements of content,” Am. J. Physiol. Gastrointest. Liver Physiol. 278(2), G329–G341 (2000).
[PubMed]

1997 (1)

T. Erdogan, “Fibre grating spectra,” J. Lightwave Technol. 15(8), 1277–1294 (1997).
[CrossRef]

1996 (2)

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

N. J. Talley, K. C. Fleming, J. M. Evans, E. A. O’Keefe, A. L. Weaver, A. R. Zinsmeister, and L. J. Melton, “Constipation in an elderly community: a study of prevalence and potential risk factors,” Am. J. Gastroenterol. 91(1), 19–25 (1996).
[PubMed]

1994 (2)

G. Bassotti, G. Chiarioni, I. Vantini, C. Betti, C. Fusaro, M. A. Pelli, and A. Morelli, “Anorectal manometric abnormalities and colonic propulsive impairment in patients with severe chronic idiopathic constipation,” Dig. Dis. Sci. 39(7), 1558–1564 (1994).
[CrossRef] [PubMed]

Y. Furukawa, I. J. Cook, V. Panagopoulos, R. D. McEvoy, D. J. Sharp, and M. Simula, “Relationship between sleep patterns and human colonic motor patterns,” Gastroenterology 107(5), 1372–1381 (1994).
[PubMed]

1989 (1)

A. Sonnenberg and T. R. Koch, “Epidemiology of constipation in the United States,” Dis. Colon Rectum 32(1), 1–8 (1989).
[CrossRef] [PubMed]

1988 (2)

G. Bassotti, M. Gaburri, B. P. Imbimbo, L. Rossi, F. Farroni, M. A. Pelli, and A. Morelli, “Colonic mass movements in idiopathic chronic constipation,” Gut 29(9), 1173–1179 (1988).
[CrossRef] [PubMed]

G. Bassotti and M. Gaburri, “Manometric investigation of high-amplitude propagated contractile activity of the human colon,” Am. J. Physiol. Gastrointest. Liver Physiol. 255, G660–G664 (1988).

Ackerson, K.

S. S. Rao, P. Sadeghi, J. Beaty, R. Kavlock, and K. Ackerson, “Ambulatory 24-h colonic manometry in healthy humans,” Am. J. Physiol. Gastrointest. Liver Physiol. 280(4), G629–G639 (2001).
[PubMed]

Andre, J.

P. G. Dinning, P. A. Bampton, J. Andre, M. L. Kennedy, D. Z. Lubowski, D. W. King, and I. J. Cook, “Abnormal predefecatory colonic motor patterns define constipation in obstructed defecation,” Gastroenterology 127(1), 49–56 (2004).
[CrossRef] [PubMed]

Arkwright, J. W.

Bampton, P. A.

P. G. Dinning, P. A. Bampton, J. Andre, M. L. Kennedy, D. Z. Lubowski, D. W. King, and I. J. Cook, “Abnormal predefecatory colonic motor patterns define constipation in obstructed defecation,” Gastroenterology 127(1), 49–56 (2004).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Prolonged multipoint recording of colonic manometry in the unprepared human colon - providing insight into potentially relevant pressure wave parameters,” Am. J. Gastroenterol. 96(6), 1838–1848 (2001).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, D. J. deCarle, and I. J. Cook, “Spatial and temporal organization of pressure patterns throughout the unprepared colon during spontaneous defecation,” Am. J. Gastroenterol. 95(4), 1027–1035 (2000).
[CrossRef] [PubMed]

Bassotti, G.

G. Bassotti, G. Chiarioni, I. Vantini, C. Betti, C. Fusaro, M. A. Pelli, and A. Morelli, “Anorectal manometric abnormalities and colonic propulsive impairment in patients with severe chronic idiopathic constipation,” Dig. Dis. Sci. 39(7), 1558–1564 (1994).
[CrossRef] [PubMed]

G. Bassotti, M. Gaburri, B. P. Imbimbo, L. Rossi, F. Farroni, M. A. Pelli, and A. Morelli, “Colonic mass movements in idiopathic chronic constipation,” Gut 29(9), 1173–1179 (1988).
[CrossRef] [PubMed]

G. Bassotti and M. Gaburri, “Manometric investigation of high-amplitude propagated contractile activity of the human colon,” Am. J. Physiol. Gastrointest. Liver Physiol. 255, G660–G664 (1988).

Beaty, J.

S. S. Rao, P. Sadeghi, J. Beaty, and R. Kavlock, “Ambulatory 24-hour colonic manometry in slow-transit constipation,” Am. J. Gastroenterol. 99(12), 2405–2416 (2004).
[CrossRef] [PubMed]

S. S. Rao, P. Sadeghi, J. Beaty, R. Kavlock, and K. Ackerson, “Ambulatory 24-h colonic manometry in healthy humans,” Am. J. Physiol. Gastrointest. Liver Physiol. 280(4), G629–G639 (2001).
[PubMed]

Behbahani, A.

S. Hervé, G. Savoye, A. Behbahani, A. M. Leroi, P. Denis, and P. Ducrotté, “Results of 24-h manometric recording of colonic motor activity with endoluminal instillation of bisacodyl in patients with severe chronic slow transit constipation,” Neurogastroenterol. Motil. 16(4), 397–402 (2004).
[CrossRef] [PubMed]

Benson, M.

R. Hagger, D. Kumar, M. Benson, and A. Grundy, “Periodic colonic motor activity identified by 24-h pancolonic ambulatory manometry in humans,” Neurogastroenterol. Motil. 14(3), 271–278 (2002).
[CrossRef] [PubMed]

Betti, C.

G. Bassotti, G. Chiarioni, I. Vantini, C. Betti, C. Fusaro, M. A. Pelli, and A. Morelli, “Anorectal manometric abnormalities and colonic propulsive impairment in patients with severe chronic idiopathic constipation,” Dig. Dis. Sci. 39(7), 1558–1564 (1994).
[CrossRef] [PubMed]

Blenman, N. G.

Brasseur, J. G.

R. B. Williams, A. Pal, J. G. Brasseur, and I. J. Cook, “Space-time pressure structure of pharyngo-esophageal segment during swallowing,” Am. J. Physiol. Gastrointest. Liver Physiol. 281(5), G1290–G1300 (2001).
[PubMed]

Brown, W.

P. Chiarelli, W. Brown, and P. McElduff, “Constipation in Australian women: prevalence and associated factors,” Int. Urogynecol. J. 11(2), 71–78 (2000).
[CrossRef]

Camilleri, M.

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

Chiarelli, P.

P. Chiarelli, W. Brown, and P. McElduff, “Constipation in Australian women: prevalence and associated factors,” Int. Urogynecol. J. 11(2), 71–78 (2000).
[CrossRef]

Chiarioni, G.

G. Bassotti, G. Chiarioni, I. Vantini, C. Betti, C. Fusaro, M. A. Pelli, and A. Morelli, “Anorectal manometric abnormalities and colonic propulsive impairment in patients with severe chronic idiopathic constipation,” Dig. Dis. Sci. 39(7), 1558–1564 (1994).
[CrossRef] [PubMed]

Chojetzki, C.

C. Chojetzki, M. Rothhardt, J. Ommer, S. Unger, K. Schuster, and H.-R. Mueller, “High-reflectivity draw-tower fiber Bragg gratings—arrays and single gratings of type II,” Opt. Eng. 44(6), 060503 (2005).
[CrossRef]

Collins, P. J.

I. J. Cook, Y. Furukawa, V. Panagopoulos, P. J. Collins, and J. Dent, “Relationships between spatial patterns of colonic pressure and individual movements of content,” Am. J. Physiol. Gastrointest. Liver Physiol. 278(2), G329–G341 (2000).
[PubMed]

Cook, I. J.

J. W. Arkwright, N. G. Blenman, I. D. Underhill, S. A. Maunder, M. M. Szczesniak, P. G. Dinning, and I. J. Cook, “In-vivo demonstration of a high resolution optical fiber manometry catheter for diagnosis of gastrointestinal motility disorders,” Opt. Express 17(6), 4500–4508 (2009), http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-6-4500 .
[CrossRef] [PubMed]

P. G. Dinning, M. M. Szczesniak, and I. J. Cook, “Proximal colonic propagating pressure waves sequences and their relationship with movements of content in the proximal human colon,” Neurogastroenterol. Motil. 20(5), 512–520 (2008).
[CrossRef] [PubMed]

P. G. Dinning, S. E. Fuentealba, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Sacral nerve stimulation induces pan-colonic propagating pressure waves and increases defecation frequency in patients with slow-transit constipation,” Colorectal Dis. 9(2), 123–132 (2007).
[CrossRef] [PubMed]

P. G. Dinning, P. A. Bampton, J. Andre, M. L. Kennedy, D. Z. Lubowski, D. W. King, and I. J. Cook, “Abnormal predefecatory colonic motor patterns define constipation in obstructed defecation,” Gastroenterology 127(1), 49–56 (2004).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Prolonged multipoint recording of colonic manometry in the unprepared human colon - providing insight into potentially relevant pressure wave parameters,” Am. J. Gastroenterol. 96(6), 1838–1848 (2001).
[CrossRef] [PubMed]

R. B. Williams, A. Pal, J. G. Brasseur, and I. J. Cook, “Space-time pressure structure of pharyngo-esophageal segment during swallowing,” Am. J. Physiol. Gastrointest. Liver Physiol. 281(5), G1290–G1300 (2001).
[PubMed]

I. J. Cook, Y. Furukawa, V. Panagopoulos, P. J. Collins, and J. Dent, “Relationships between spatial patterns of colonic pressure and individual movements of content,” Am. J. Physiol. Gastrointest. Liver Physiol. 278(2), G329–G341 (2000).
[PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, D. J. deCarle, and I. J. Cook, “Spatial and temporal organization of pressure patterns throughout the unprepared colon during spontaneous defecation,” Am. J. Gastroenterol. 95(4), 1027–1035 (2000).
[CrossRef] [PubMed]

Y. Furukawa, I. J. Cook, V. Panagopoulos, R. D. McEvoy, D. J. Sharp, and M. Simula, “Relationship between sleep patterns and human colonic motor patterns,” Gastroenterology 107(5), 1372–1381 (1994).
[PubMed]

De Schryver, A. M.

A. M. De Schryver, M. Samsom, and A. I. Smout, “Effects of a meal and bisacodyl on colonic motility in healthy volunteers and patients with slow-transit constipation,” Dig. Dis. Sci. 48(7), 1206–1212 (2003).
[CrossRef] [PubMed]

deCarle, D. J.

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, D. J. deCarle, and I. J. Cook, “Spatial and temporal organization of pressure patterns throughout the unprepared colon during spontaneous defecation,” Am. J. Gastroenterol. 95(4), 1027–1035 (2000).
[CrossRef] [PubMed]

Denis, P.

S. Hervé, G. Savoye, A. Behbahani, A. M. Leroi, P. Denis, and P. Ducrotté, “Results of 24-h manometric recording of colonic motor activity with endoluminal instillation of bisacodyl in patients with severe chronic slow transit constipation,” Neurogastroenterol. Motil. 16(4), 397–402 (2004).
[CrossRef] [PubMed]

Dent, J.

I. J. Cook, Y. Furukawa, V. Panagopoulos, P. J. Collins, and J. Dent, “Relationships between spatial patterns of colonic pressure and individual movements of content,” Am. J. Physiol. Gastrointest. Liver Physiol. 278(2), G329–G341 (2000).
[PubMed]

Dinning, P. G.

J. W. Arkwright, N. G. Blenman, I. D. Underhill, S. A. Maunder, M. M. Szczesniak, P. G. Dinning, and I. J. Cook, “In-vivo demonstration of a high resolution optical fiber manometry catheter for diagnosis of gastrointestinal motility disorders,” Opt. Express 17(6), 4500–4508 (2009), http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-6-4500 .
[CrossRef] [PubMed]

P. G. Dinning, M. M. Szczesniak, and I. J. Cook, “Proximal colonic propagating pressure waves sequences and their relationship with movements of content in the proximal human colon,” Neurogastroenterol. Motil. 20(5), 512–520 (2008).
[CrossRef] [PubMed]

P. G. Dinning, S. E. Fuentealba, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Sacral nerve stimulation induces pan-colonic propagating pressure waves and increases defecation frequency in patients with slow-transit constipation,” Colorectal Dis. 9(2), 123–132 (2007).
[CrossRef] [PubMed]

P. G. Dinning, P. A. Bampton, J. Andre, M. L. Kennedy, D. Z. Lubowski, D. W. King, and I. J. Cook, “Abnormal predefecatory colonic motor patterns define constipation in obstructed defecation,” Gastroenterology 127(1), 49–56 (2004).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Prolonged multipoint recording of colonic manometry in the unprepared human colon - providing insight into potentially relevant pressure wave parameters,” Am. J. Gastroenterol. 96(6), 1838–1848 (2001).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, D. J. deCarle, and I. J. Cook, “Spatial and temporal organization of pressure patterns throughout the unprepared colon during spontaneous defecation,” Am. J. Gastroenterol. 95(4), 1027–1035 (2000).
[CrossRef] [PubMed]

Ducrotté, P.

S. Hervé, G. Savoye, A. Behbahani, A. M. Leroi, P. Denis, and P. Ducrotté, “Results of 24-h manometric recording of colonic motor activity with endoluminal instillation of bisacodyl in patients with severe chronic slow transit constipation,” Neurogastroenterol. Motil. 16(4), 397–402 (2004).
[CrossRef] [PubMed]

Erdogan, T.

T. Erdogan, “Fibre grating spectra,” J. Lightwave Technol. 15(8), 1277–1294 (1997).
[CrossRef]

Evans, J. M.

N. J. Talley, K. C. Fleming, J. M. Evans, E. A. O’Keefe, A. L. Weaver, A. R. Zinsmeister, and L. J. Melton, “Constipation in an elderly community: a study of prevalence and potential risk factors,” Am. J. Gastroenterol. 91(1), 19–25 (1996).
[PubMed]

Everhart, J. E.

J. E. Everhart and C. E. Ruhl, “Burden of Digestive Diseases in the United States Part I: Overall and Upper Gastrointestinal Diseases,” Gastroenterology 136(2), 376–386 (2009).
[CrossRef] [PubMed]

Farroni, F.

G. Bassotti, M. Gaburri, B. P. Imbimbo, L. Rossi, F. Farroni, M. A. Pelli, and A. Morelli, “Colonic mass movements in idiopathic chronic constipation,” Gut 29(9), 1173–1179 (1988).
[CrossRef] [PubMed]

Ferrazzi, S.

W. G. Thompson, E. J. Irvine, P. Pare, S. Ferrazzi, and L. Rance, “Functional gastrointestinal disorders in Canada: first population-based survey using Rome II criteria with suggestions for improving the questionnaire,” Dig. Dis. Sci. 47(1), 225–235 (2002).
[CrossRef] [PubMed]

E. J. Irvine, S. Ferrazzi, P. Pare, W. G. Thompson, and L. Rance, “Health-related quality of life in functional GI disorders: focus on constipation and resource utilization,” Am. J. Gastroenterol. 97(8), 1986–1993 (2002).
[CrossRef] [PubMed]

Fleming, K. C.

N. J. Talley, K. C. Fleming, J. M. Evans, E. A. O’Keefe, A. L. Weaver, A. R. Zinsmeister, and L. J. Melton, “Constipation in an elderly community: a study of prevalence and potential risk factors,” Am. J. Gastroenterol. 91(1), 19–25 (1996).
[PubMed]

Fuentealba, S. E.

P. G. Dinning, S. E. Fuentealba, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Sacral nerve stimulation induces pan-colonic propagating pressure waves and increases defecation frequency in patients with slow-transit constipation,” Colorectal Dis. 9(2), 123–132 (2007).
[CrossRef] [PubMed]

Furukawa, Y.

I. J. Cook, Y. Furukawa, V. Panagopoulos, P. J. Collins, and J. Dent, “Relationships between spatial patterns of colonic pressure and individual movements of content,” Am. J. Physiol. Gastrointest. Liver Physiol. 278(2), G329–G341 (2000).
[PubMed]

Y. Furukawa, I. J. Cook, V. Panagopoulos, R. D. McEvoy, D. J. Sharp, and M. Simula, “Relationship between sleep patterns and human colonic motor patterns,” Gastroenterology 107(5), 1372–1381 (1994).
[PubMed]

Fusaro, C.

G. Bassotti, G. Chiarioni, I. Vantini, C. Betti, C. Fusaro, M. A. Pelli, and A. Morelli, “Anorectal manometric abnormalities and colonic propulsive impairment in patients with severe chronic idiopathic constipation,” Dig. Dis. Sci. 39(7), 1558–1564 (1994).
[CrossRef] [PubMed]

Gaburri, M.

G. Bassotti, M. Gaburri, B. P. Imbimbo, L. Rossi, F. Farroni, M. A. Pelli, and A. Morelli, “Colonic mass movements in idiopathic chronic constipation,” Gut 29(9), 1173–1179 (1988).
[CrossRef] [PubMed]

G. Bassotti and M. Gaburri, “Manometric investigation of high-amplitude propagated contractile activity of the human colon,” Am. J. Physiol. Gastrointest. Liver Physiol. 255, G660–G664 (1988).

Grundy, A.

R. Hagger, D. Kumar, M. Benson, and A. Grundy, “Periodic colonic motor activity identified by 24-h pancolonic ambulatory manometry in humans,” Neurogastroenterol. Motil. 14(3), 271–278 (2002).
[CrossRef] [PubMed]

Hagger, R.

R. Hagger, D. Kumar, M. Benson, and A. Grundy, “Periodic colonic motor activity identified by 24-h pancolonic ambulatory manometry in humans,” Neurogastroenterol. Motil. 14(3), 271–278 (2002).
[CrossRef] [PubMed]

Hanson, R. B.

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

Hervé, S.

S. Hervé, G. Savoye, A. Behbahani, A. M. Leroi, P. Denis, and P. Ducrotté, “Results of 24-h manometric recording of colonic motor activity with endoluminal instillation of bisacodyl in patients with severe chronic slow transit constipation,” Neurogastroenterol. Motil. 16(4), 397–402 (2004).
[CrossRef] [PubMed]

Imbimbo, B. P.

G. Bassotti, M. Gaburri, B. P. Imbimbo, L. Rossi, F. Farroni, M. A. Pelli, and A. Morelli, “Colonic mass movements in idiopathic chronic constipation,” Gut 29(9), 1173–1179 (1988).
[CrossRef] [PubMed]

Irvine, E. J.

E. J. Irvine, S. Ferrazzi, P. Pare, W. G. Thompson, and L. Rance, “Health-related quality of life in functional GI disorders: focus on constipation and resource utilization,” Am. J. Gastroenterol. 97(8), 1986–1993 (2002).
[CrossRef] [PubMed]

W. G. Thompson, E. J. Irvine, P. Pare, S. Ferrazzi, and L. Rance, “Functional gastrointestinal disorders in Canada: first population-based survey using Rome II criteria with suggestions for improving the questionnaire,” Dig. Dis. Sci. 47(1), 225–235 (2002).
[CrossRef] [PubMed]

Kavlock, R.

S. S. Rao, P. Sadeghi, J. Beaty, and R. Kavlock, “Ambulatory 24-hour colonic manometry in slow-transit constipation,” Am. J. Gastroenterol. 99(12), 2405–2416 (2004).
[CrossRef] [PubMed]

S. S. Rao, P. Sadeghi, J. Beaty, R. Kavlock, and K. Ackerson, “Ambulatory 24-h colonic manometry in healthy humans,” Am. J. Physiol. Gastrointest. Liver Physiol. 280(4), G629–G639 (2001).
[PubMed]

Kennedy, M. L.

P. G. Dinning, S. E. Fuentealba, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Sacral nerve stimulation induces pan-colonic propagating pressure waves and increases defecation frequency in patients with slow-transit constipation,” Colorectal Dis. 9(2), 123–132 (2007).
[CrossRef] [PubMed]

P. G. Dinning, P. A. Bampton, J. Andre, M. L. Kennedy, D. Z. Lubowski, D. W. King, and I. J. Cook, “Abnormal predefecatory colonic motor patterns define constipation in obstructed defecation,” Gastroenterology 127(1), 49–56 (2004).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Prolonged multipoint recording of colonic manometry in the unprepared human colon - providing insight into potentially relevant pressure wave parameters,” Am. J. Gastroenterol. 96(6), 1838–1848 (2001).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, D. J. deCarle, and I. J. Cook, “Spatial and temporal organization of pressure patterns throughout the unprepared colon during spontaneous defecation,” Am. J. Gastroenterol. 95(4), 1027–1035 (2000).
[CrossRef] [PubMed]

King, D. W.

P. G. Dinning, P. A. Bampton, J. Andre, M. L. Kennedy, D. Z. Lubowski, D. W. King, and I. J. Cook, “Abnormal predefecatory colonic motor patterns define constipation in obstructed defecation,” Gastroenterology 127(1), 49–56 (2004).
[CrossRef] [PubMed]

Koch, T. R.

A. Sonnenberg and T. R. Koch, “Epidemiology of constipation in the United States,” Dis. Colon Rectum 32(1), 1–8 (1989).
[CrossRef] [PubMed]

Kumar, D.

R. Hagger, D. Kumar, M. Benson, and A. Grundy, “Periodic colonic motor activity identified by 24-h pancolonic ambulatory manometry in humans,” Neurogastroenterol. Motil. 14(3), 271–278 (2002).
[CrossRef] [PubMed]

Leroi, A. M.

S. Hervé, G. Savoye, A. Behbahani, A. M. Leroi, P. Denis, and P. Ducrotté, “Results of 24-h manometric recording of colonic motor activity with endoluminal instillation of bisacodyl in patients with severe chronic slow transit constipation,” Neurogastroenterol. Motil. 16(4), 397–402 (2004).
[CrossRef] [PubMed]

Levy, S.

S. Levy, “Drug outlets remain leader in laxative sales,” Drug Top. 8, (2002).

Lubowski, D. Z.

P. G. Dinning, S. E. Fuentealba, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Sacral nerve stimulation induces pan-colonic propagating pressure waves and increases defecation frequency in patients with slow-transit constipation,” Colorectal Dis. 9(2), 123–132 (2007).
[CrossRef] [PubMed]

P. G. Dinning, P. A. Bampton, J. Andre, M. L. Kennedy, D. Z. Lubowski, D. W. King, and I. J. Cook, “Abnormal predefecatory colonic motor patterns define constipation in obstructed defecation,” Gastroenterology 127(1), 49–56 (2004).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Prolonged multipoint recording of colonic manometry in the unprepared human colon - providing insight into potentially relevant pressure wave parameters,” Am. J. Gastroenterol. 96(6), 1838–1848 (2001).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, D. J. deCarle, and I. J. Cook, “Spatial and temporal organization of pressure patterns throughout the unprepared colon during spontaneous defecation,” Am. J. Gastroenterol. 95(4), 1027–1035 (2000).
[CrossRef] [PubMed]

Maunder, S. A.

McElduff, P.

P. Chiarelli, W. Brown, and P. McElduff, “Constipation in Australian women: prevalence and associated factors,” Int. Urogynecol. J. 11(2), 71–78 (2000).
[CrossRef]

McEvoy, R. D.

Y. Furukawa, I. J. Cook, V. Panagopoulos, R. D. McEvoy, D. J. Sharp, and M. Simula, “Relationship between sleep patterns and human colonic motor patterns,” Gastroenterology 107(5), 1372–1381 (1994).
[PubMed]

Melton, L. J.

N. J. Talley, K. C. Fleming, J. M. Evans, E. A. O’Keefe, A. L. Weaver, A. R. Zinsmeister, and L. J. Melton, “Constipation in an elderly community: a study of prevalence and potential risk factors,” Am. J. Gastroenterol. 91(1), 19–25 (1996).
[PubMed]

Morelli, A.

G. Bassotti, G. Chiarioni, I. Vantini, C. Betti, C. Fusaro, M. A. Pelli, and A. Morelli, “Anorectal manometric abnormalities and colonic propulsive impairment in patients with severe chronic idiopathic constipation,” Dig. Dis. Sci. 39(7), 1558–1564 (1994).
[CrossRef] [PubMed]

G. Bassotti, M. Gaburri, B. P. Imbimbo, L. Rossi, F. Farroni, M. A. Pelli, and A. Morelli, “Colonic mass movements in idiopathic chronic constipation,” Gut 29(9), 1173–1179 (1988).
[CrossRef] [PubMed]

Mueller, H.-R.

C. Chojetzki, M. Rothhardt, J. Ommer, S. Unger, K. Schuster, and H.-R. Mueller, “High-reflectivity draw-tower fiber Bragg gratings—arrays and single gratings of type II,” Opt. Eng. 44(6), 060503 (2005).
[CrossRef]

O’Brien, M. D.

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

O’Keefe, E. A.

N. J. Talley, K. C. Fleming, J. M. Evans, E. A. O’Keefe, A. L. Weaver, A. R. Zinsmeister, and L. J. Melton, “Constipation in an elderly community: a study of prevalence and potential risk factors,” Am. J. Gastroenterol. 91(1), 19–25 (1996).
[PubMed]

Ommer, J.

C. Chojetzki, M. Rothhardt, J. Ommer, S. Unger, K. Schuster, and H.-R. Mueller, “High-reflectivity draw-tower fiber Bragg gratings—arrays and single gratings of type II,” Opt. Eng. 44(6), 060503 (2005).
[CrossRef]

Pal, A.

R. B. Williams, A. Pal, J. G. Brasseur, and I. J. Cook, “Space-time pressure structure of pharyngo-esophageal segment during swallowing,” Am. J. Physiol. Gastrointest. Liver Physiol. 281(5), G1290–G1300 (2001).
[PubMed]

Panagopoulos, V.

I. J. Cook, Y. Furukawa, V. Panagopoulos, P. J. Collins, and J. Dent, “Relationships between spatial patterns of colonic pressure and individual movements of content,” Am. J. Physiol. Gastrointest. Liver Physiol. 278(2), G329–G341 (2000).
[PubMed]

Y. Furukawa, I. J. Cook, V. Panagopoulos, R. D. McEvoy, D. J. Sharp, and M. Simula, “Relationship between sleep patterns and human colonic motor patterns,” Gastroenterology 107(5), 1372–1381 (1994).
[PubMed]

Pare, P.

W. G. Thompson, E. J. Irvine, P. Pare, S. Ferrazzi, and L. Rance, “Functional gastrointestinal disorders in Canada: first population-based survey using Rome II criteria with suggestions for improving the questionnaire,” Dig. Dis. Sci. 47(1), 225–235 (2002).
[CrossRef] [PubMed]

E. J. Irvine, S. Ferrazzi, P. Pare, W. G. Thompson, and L. Rance, “Health-related quality of life in functional GI disorders: focus on constipation and resource utilization,” Am. J. Gastroenterol. 97(8), 1986–1993 (2002).
[CrossRef] [PubMed]

Pelli, M. A.

G. Bassotti, G. Chiarioni, I. Vantini, C. Betti, C. Fusaro, M. A. Pelli, and A. Morelli, “Anorectal manometric abnormalities and colonic propulsive impairment in patients with severe chronic idiopathic constipation,” Dig. Dis. Sci. 39(7), 1558–1564 (1994).
[CrossRef] [PubMed]

G. Bassotti, M. Gaburri, B. P. Imbimbo, L. Rossi, F. Farroni, M. A. Pelli, and A. Morelli, “Colonic mass movements in idiopathic chronic constipation,” Gut 29(9), 1173–1179 (1988).
[CrossRef] [PubMed]

Pemberton, J. H.

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

Phillips, S. F.

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

Prather, C. M.

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

Rance, L.

W. G. Thompson, E. J. Irvine, P. Pare, S. Ferrazzi, and L. Rance, “Functional gastrointestinal disorders in Canada: first population-based survey using Rome II criteria with suggestions for improving the questionnaire,” Dig. Dis. Sci. 47(1), 225–235 (2002).
[CrossRef] [PubMed]

E. J. Irvine, S. Ferrazzi, P. Pare, W. G. Thompson, and L. Rance, “Health-related quality of life in functional GI disorders: focus on constipation and resource utilization,” Am. J. Gastroenterol. 97(8), 1986–1993 (2002).
[CrossRef] [PubMed]

Rao, S. S.

S. S. Rao, P. Sadeghi, J. Beaty, and R. Kavlock, “Ambulatory 24-hour colonic manometry in slow-transit constipation,” Am. J. Gastroenterol. 99(12), 2405–2416 (2004).
[CrossRef] [PubMed]

S. S. Rao, P. Sadeghi, J. Beaty, R. Kavlock, and K. Ackerson, “Ambulatory 24-h colonic manometry in healthy humans,” Am. J. Physiol. Gastrointest. Liver Physiol. 280(4), G629–G639 (2001).
[PubMed]

Rossi, L.

G. Bassotti, M. Gaburri, B. P. Imbimbo, L. Rossi, F. Farroni, M. A. Pelli, and A. Morelli, “Colonic mass movements in idiopathic chronic constipation,” Gut 29(9), 1173–1179 (1988).
[CrossRef] [PubMed]

Rothhardt, M.

C. Chojetzki, M. Rothhardt, J. Ommer, S. Unger, K. Schuster, and H.-R. Mueller, “High-reflectivity draw-tower fiber Bragg gratings—arrays and single gratings of type II,” Opt. Eng. 44(6), 060503 (2005).
[CrossRef]

Ruhl, C. E.

J. E. Everhart and C. E. Ruhl, “Burden of Digestive Diseases in the United States Part I: Overall and Upper Gastrointestinal Diseases,” Gastroenterology 136(2), 376–386 (2009).
[CrossRef] [PubMed]

Sadeghi, P.

S. S. Rao, P. Sadeghi, J. Beaty, and R. Kavlock, “Ambulatory 24-hour colonic manometry in slow-transit constipation,” Am. J. Gastroenterol. 99(12), 2405–2416 (2004).
[CrossRef] [PubMed]

S. S. Rao, P. Sadeghi, J. Beaty, R. Kavlock, and K. Ackerson, “Ambulatory 24-h colonic manometry in healthy humans,” Am. J. Physiol. Gastrointest. Liver Physiol. 280(4), G629–G639 (2001).
[PubMed]

Samsom, M.

A. M. De Schryver, M. Samsom, and A. I. Smout, “Effects of a meal and bisacodyl on colonic motility in healthy volunteers and patients with slow-transit constipation,” Dig. Dis. Sci. 48(7), 1206–1212 (2003).
[CrossRef] [PubMed]

Savoye, G.

S. Hervé, G. Savoye, A. Behbahani, A. M. Leroi, P. Denis, and P. Ducrotté, “Results of 24-h manometric recording of colonic motor activity with endoluminal instillation of bisacodyl in patients with severe chronic slow transit constipation,” Neurogastroenterol. Motil. 16(4), 397–402 (2004).
[CrossRef] [PubMed]

Schuster, K.

C. Chojetzki, M. Rothhardt, J. Ommer, S. Unger, K. Schuster, and H.-R. Mueller, “High-reflectivity draw-tower fiber Bragg gratings—arrays and single gratings of type II,” Opt. Eng. 44(6), 060503 (2005).
[CrossRef]

Sharp, D. J.

Y. Furukawa, I. J. Cook, V. Panagopoulos, R. D. McEvoy, D. J. Sharp, and M. Simula, “Relationship between sleep patterns and human colonic motor patterns,” Gastroenterology 107(5), 1372–1381 (1994).
[PubMed]

Simula, M.

Y. Furukawa, I. J. Cook, V. Panagopoulos, R. D. McEvoy, D. J. Sharp, and M. Simula, “Relationship between sleep patterns and human colonic motor patterns,” Gastroenterology 107(5), 1372–1381 (1994).
[PubMed]

Smout, A. I.

A. M. De Schryver, M. Samsom, and A. I. Smout, “Effects of a meal and bisacodyl on colonic motility in healthy volunteers and patients with slow-transit constipation,” Dig. Dis. Sci. 48(7), 1206–1212 (2003).
[CrossRef] [PubMed]

Sonnenberg, A.

A. Sonnenberg and T. R. Koch, “Epidemiology of constipation in the United States,” Dis. Colon Rectum 32(1), 1–8 (1989).
[CrossRef] [PubMed]

Szczesniak, M. M.

Talley, N. J.

N. J. Talley, K. C. Fleming, J. M. Evans, E. A. O’Keefe, A. L. Weaver, A. R. Zinsmeister, and L. J. Melton, “Constipation in an elderly community: a study of prevalence and potential risk factors,” Am. J. Gastroenterol. 91(1), 19–25 (1996).
[PubMed]

Thompson, W. G.

E. J. Irvine, S. Ferrazzi, P. Pare, W. G. Thompson, and L. Rance, “Health-related quality of life in functional GI disorders: focus on constipation and resource utilization,” Am. J. Gastroenterol. 97(8), 1986–1993 (2002).
[CrossRef] [PubMed]

W. G. Thompson, E. J. Irvine, P. Pare, S. Ferrazzi, and L. Rance, “Functional gastrointestinal disorders in Canada: first population-based survey using Rome II criteria with suggestions for improving the questionnaire,” Dig. Dis. Sci. 47(1), 225–235 (2002).
[CrossRef] [PubMed]

Underhill, I. D.

Unger, S.

C. Chojetzki, M. Rothhardt, J. Ommer, S. Unger, K. Schuster, and H.-R. Mueller, “High-reflectivity draw-tower fiber Bragg gratings—arrays and single gratings of type II,” Opt. Eng. 44(6), 060503 (2005).
[CrossRef]

Vantini, I.

G. Bassotti, G. Chiarioni, I. Vantini, C. Betti, C. Fusaro, M. A. Pelli, and A. Morelli, “Anorectal manometric abnormalities and colonic propulsive impairment in patients with severe chronic idiopathic constipation,” Dig. Dis. Sci. 39(7), 1558–1564 (1994).
[CrossRef] [PubMed]

von der Ohe, M. R.

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

Weaver, A. L.

N. J. Talley, K. C. Fleming, J. M. Evans, E. A. O’Keefe, A. L. Weaver, A. R. Zinsmeister, and L. J. Melton, “Constipation in an elderly community: a study of prevalence and potential risk factors,” Am. J. Gastroenterol. 91(1), 19–25 (1996).
[PubMed]

Williams, R. B.

R. B. Williams, A. Pal, J. G. Brasseur, and I. J. Cook, “Space-time pressure structure of pharyngo-esophageal segment during swallowing,” Am. J. Physiol. Gastrointest. Liver Physiol. 281(5), G1290–G1300 (2001).
[PubMed]

Wiste, J. A.

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

Zinsmeister, A. R.

N. J. Talley, K. C. Fleming, J. M. Evans, E. A. O’Keefe, A. L. Weaver, A. R. Zinsmeister, and L. J. Melton, “Constipation in an elderly community: a study of prevalence and potential risk factors,” Am. J. Gastroenterol. 91(1), 19–25 (1996).
[PubMed]

Am. J. Gastroenterol. (6)

E. J. Irvine, S. Ferrazzi, P. Pare, W. G. Thompson, and L. Rance, “Health-related quality of life in functional GI disorders: focus on constipation and resource utilization,” Am. J. Gastroenterol. 97(8), 1986–1993 (2002).
[CrossRef] [PubMed]

N. J. Talley, K. C. Fleming, J. M. Evans, E. A. O’Keefe, A. L. Weaver, A. R. Zinsmeister, and L. J. Melton, “Constipation in an elderly community: a study of prevalence and potential risk factors,” Am. J. Gastroenterol. 91(1), 19–25 (1996).
[PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, D. J. deCarle, and I. J. Cook, “Spatial and temporal organization of pressure patterns throughout the unprepared colon during spontaneous defecation,” Am. J. Gastroenterol. 95(4), 1027–1035 (2000).
[CrossRef] [PubMed]

S. S. Rao, P. Sadeghi, J. Beaty, and R. Kavlock, “Ambulatory 24-hour colonic manometry in slow-transit constipation,” Am. J. Gastroenterol. 99(12), 2405–2416 (2004).
[CrossRef] [PubMed]

P. A. Bampton, P. G. Dinning, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Prolonged multipoint recording of colonic manometry in the unprepared human colon - providing insight into potentially relevant pressure wave parameters,” Am. J. Gastroenterol. 96(6), 1838–1848 (2001).
[CrossRef] [PubMed]

M. D. O’Brien, M. Camilleri, M. R. von der Ohe, S. F. Phillips, J. H. Pemberton, C. M. Prather, J. A. Wiste, and R. B. Hanson, “Motility and tone of the left colon in constipation: a role in clinical practice?” Am. J. Gastroenterol. 91(12), 2532–2538 (1996).
[PubMed]

Am. J. Physiol. Gastrointest. Liver Physiol. (4)

R. B. Williams, A. Pal, J. G. Brasseur, and I. J. Cook, “Space-time pressure structure of pharyngo-esophageal segment during swallowing,” Am. J. Physiol. Gastrointest. Liver Physiol. 281(5), G1290–G1300 (2001).
[PubMed]

I. J. Cook, Y. Furukawa, V. Panagopoulos, P. J. Collins, and J. Dent, “Relationships between spatial patterns of colonic pressure and individual movements of content,” Am. J. Physiol. Gastrointest. Liver Physiol. 278(2), G329–G341 (2000).
[PubMed]

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[PubMed]

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P. G. Dinning, S. E. Fuentealba, M. L. Kennedy, D. Z. Lubowski, and I. J. Cook, “Sacral nerve stimulation induces pan-colonic propagating pressure waves and increases defecation frequency in patients with slow-transit constipation,” Colorectal Dis. 9(2), 123–132 (2007).
[CrossRef] [PubMed]

Dig. Dis. Sci. (3)

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[CrossRef] [PubMed]

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[CrossRef] [PubMed]

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[CrossRef] [PubMed]

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Gastroenterology (3)

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[CrossRef] [PubMed]

P. G. Dinning, P. A. Bampton, J. Andre, M. L. Kennedy, D. Z. Lubowski, D. W. King, and I. J. Cook, “Abnormal predefecatory colonic motor patterns define constipation in obstructed defecation,” Gastroenterology 127(1), 49–56 (2004).
[CrossRef] [PubMed]

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[PubMed]

Gut (1)

G. Bassotti, M. Gaburri, B. P. Imbimbo, L. Rossi, F. Farroni, M. A. Pelli, and A. Morelli, “Colonic mass movements in idiopathic chronic constipation,” Gut 29(9), 1173–1179 (1988).
[CrossRef] [PubMed]

Int. Urogynecol. J. (1)

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[CrossRef]

J. Lightwave Technol. (1)

T. Erdogan, “Fibre grating spectra,” J. Lightwave Technol. 15(8), 1277–1294 (1997).
[CrossRef]

Neurogastroenterol. Motil. (3)

S. Hervé, G. Savoye, A. Behbahani, A. M. Leroi, P. Denis, and P. Ducrotté, “Results of 24-h manometric recording of colonic motor activity with endoluminal instillation of bisacodyl in patients with severe chronic slow transit constipation,” Neurogastroenterol. Motil. 16(4), 397–402 (2004).
[CrossRef] [PubMed]

P. G. Dinning, M. M. Szczesniak, and I. J. Cook, “Proximal colonic propagating pressure waves sequences and their relationship with movements of content in the proximal human colon,” Neurogastroenterol. Motil. 20(5), 512–520 (2008).
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[CrossRef] [PubMed]

Opt. Eng. (1)

C. Chojetzki, M. Rothhardt, J. Ommer, S. Unger, K. Schuster, and H.-R. Mueller, “High-reflectivity draw-tower fiber Bragg gratings—arrays and single gratings of type II,” Opt. Eng. 44(6), 060503 (2005).
[CrossRef]

Opt. Express (1)

Other (3)

H. Nyquist, “Certain topics in telegraph transmission theory,” AIEE 47, 617–644 (Reprint as classic paper in: Proc. IEEE, Vol. 690, No. 612, Feb 2002) (1928).

P. L. Swart, B. M. Lacquet, and A. A. Chtcherbakov, “Chirped fiber optic Bragg grating esophageal pressure sensor,” Optical Fiber Sensors Conference Technical Digest, 2002. OFS 15 1, 235–238 (2002).

M. Becker, M. Rothherdt, H. Bartelt, S. Voigt, A. Teubner, T. Luepke, C. Thieroff, and C. Chojetzki, “Fiber Bragg grating arrays for high-resolution manometry,” To be published in the technical digest of OFS 20, (2009).

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Figures (6)

Fig. 1
Fig. 1

(a) Ingress of the wavelength peak of one channel into that of an adjacent peak as a function of applied pressure; and (b) the cross-talk effect on the static peak due to the ingress of the varying peak. The dynamic range of the sensor array is determined by the point at which the proximity of one peak starts to affect the measured wavelength of the adjacent peak.

Fig. 2
Fig. 2

Reflection spectrum recorded from a single fibre containing a 36 element Draw Tower Grating array. Note that the variation in peak amplitudes is due to the gain variation of the detector not to variation in grating strength.

Fig. 3
Fig. 3

Fibre optic sensor array woven into substrates. Note the cross over of the fibres to facilitate flexibility of the catheter

Fig. 4
Fig. 4

Location of the fibre optic catheter in two female patients with slow transit constipation. A. ‘EW’, 34yrs & B ‘IP’ 62yrs

Fig. 5
Fig. 5

Twenty four hour spatiotemporal maps of antegrade and retrograde propagating sequences recorded in patient EW. The maps indicate comparisons of the number of detected PSs between (A) 1cm spacing, (B) 7cm spacing and (C) 10cm spacing. The details of each image are given in the text.

Fig. 6
Fig. 6

An X-ray image showing placement of the catheter in patient IP (A); and manometric traces of colonic motor patterns recorded from the distal-transverse to the rectum. The manometric trace in the middle (B) shows that data recorded at 10 cm intervals. The manometric trace on the right (C) shows the data from the full array of recording sites. Further details are given in the text.

Tables (1)

Tables Icon

Table 1 Antegrade and retrograde PS frequency at each of the different special settings.

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