Gastric emptying in non-responders to H2-receptor antagonists.
H2-receptor antagonists are known to fail to increase the intragastric pH in some patients (so-called non-responders), and we have recently found a higher frequency of non-responders among cirrhotics. Since intragastric pH is also affected by gastric emptying, in the present study we determined the gastric emptying of 300 ml orange juice labelled with [99mTc]-Solco Nanocoll using a gamma camera. Measurements were made over a period of 60 min in cirrhotic patients and controls without liver disease who either responded to 300 mg ranitidine or showed no response. The mean (+/- SD) liquid half-emptying time (T1/2) was 26.3 +/- 17.5 min (range, 9-75 min) in responders (n = 10), 20.9 +/- 8.6 min (range, 7-34 min) in non-responders (n = 10), 19.4 +/- 19.2 min (range, 7-75 min) in cirrhotics (n = 11), and 27 +/- 4.6 min (range, 17-33 min) in controls (n = 9). In 19 of the 20 subjects gastric emptying was normal (T1/2, less than 40 min). Since gastric emptying was not delayed in any of the non-responders, it would appear very unlikely that gastric motility plays a major role in the non-response to H2-receptor antagonists.
Walker
S
S
Abteilung für Gastroenterologie, Robert-Bosch-Krankenhaus, Stuttgart.
Meinke
J
J
Klotz
U
U
Treiber
G
G
Bode
J C
JC
D000328:Adult; D000368:Aged; D004351:Drug Resistance; D004942:Esophagitis, Peptic / Q000188:drug therapy; D005260:Female; D005746:Gastric Emptying / Q000187:drug effects; D005756:Gastritis / Q000188:drug therapy; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000188:drug therapy; D011899:Ranitidine / Q000627:therapeutic use*; D013272:Stomach Diseases / Q000188:drug therapy / Q000503:physiopathology*
D011899:Ranitidine