Single doses of ritodrine delay orocaecal transit in patients with irritable bowel syndrome.
The lactulose hydrogen breath test was used to assess the effect of a single dose of the beta 2-adrenoceptor agonist ritodrine on orocaecal transit time in 11 patients (three men) with irritable bowel syndrome. Transit time (median values, range) was significantly longer (P less than 0.01) after ritodrine than after placebo (120, 50-200 vs 75, 40-100 min). Median heart rate was similar before treatments whereas the maximal increase in heart rate was significantly greater (P less than 0.01) after ritodrine than after placebo.
Basilisco
G
G
Cattedra di Patologia Medica III, Università degli Studi di Milano, Italy.
Camboni
M G
MG
Bozzani
A
A
Molgora
M
M
Bianchi
P A
PA
D000328:Adult; D001944:Breath Tests; D003109:Colonic Diseases, Functional / Q000188:drug therapy* / Q000503:physiopathology; D004311:Double-Blind Method; D005260:Female; D005772:Gastrointestinal Transit / Q000187:drug effects*; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007792:Lactulose / Q000032:analysis; D008297:Male; D008875:Middle Aged; D011897:Random Allocation; D012312:Ritodrine / Q000009:adverse effects / Q000627:therapeutic use*
D007792:Lactulose; D012312:Ritodrine