Biomedical subjects

D Chinzon

Publications and source records attributed to D Chinzon.

3 recordsLinked to original sources

PubMedDate not supplied

[Oddi's sphincter dysfunction].

Since the first description by Glisson in 1681 many papers about the sphincter of Oddi have been published contributing to the understanding of its physiology. Sphincter manometry has brought to light new facts that allow a better understanding of old concepts such as the biliary dyskinesia and the post-cholecystectomy syndrome as well as a more rational evaluation of the clinical results of the sphincterectomy. A review of the physiologic, pharmacologic, diagnostic and therapeutic aspects of the dysfunction of the sphincter of Oddi is presented.

Adult↗

PubMedDate not supplied

[Treatment of gastric ulcer with ranitidine: comparison of a single 300 mg dose at night with 150 mg twice a day].

Twenty five patients with endoscopically diagnosed gastric ulcer, were randomly allocated to treatment with ranitidine 300 mg at night or ranitidine 150 mg twice daily. After six weeks, ulcer healing was observed in 7 out of 14 patients (50%) treated with ranitidine 300 mg nocte and in 7 out of 11 (63.6%) receiving 150 mg bid. Cumulative healing rates at 12 weeks were 64.2% and 81.8%, respectively. There was no statistically significant difference between these two groups. No adverse events were reported by any patient. Ranitidine 300 mg administered at night was effective and a safe regimen for the treatment of gastric ulcer.

Adult↗

PubMedDate not supplied

Is the inhibition of nocturnal gastric acid secretion the most important factor in duodenal ulcer treatment? A comparison between the effectiveness of single morning and nocte doses of ranitidine 300 mg.

Fifty-five patients with an endoscopically confirmed duodenal ulcer were randomly allocated to receive ranitidine 300 mg either in a single morning or a single nocte dose (26 and 29 patients respectively). They were endoscopically examined at the end of the second week and when the ulcer was still active, the patient was treated for another two weeks, when endoscopy was repeated. Patients with ulcers still active at four weeks were considered treatment failures. The healing rate observed when ranitidine 300 mg was given in the morning was 10/26 (38%) at the end of the second week and 17/26 (65%) at the end of the fourth week. The healing rates after the 300 mg nocte treatment was 12/29 (41%) at the end of the second week and 20/29 (68%) at the end of the fourth week. No side effects were observed in any of the 55 patients, although one patient in the morning regimen bled at the end of the second week and was withdrawn from the study. Our results showed that ranitidine 300 mg in a single morning dose is as effective as when given in a single night dose. This finding is suggestive that reduction of nocturnal gastric acid secretion is important, but not essential for the healing of duodenal ulcer.

Adult↗