Endoscopic findings and prevalence of Helicobacter pylori in Kenyan patients with dyspepsia.

One hundred and twenty consecutive patients above 12 years of age with dyspepsia were studied from June 1993 to September 1994. They underwent upper gastrointestinal endoscopy to find the mucosal lesions which were associated with their dyspeptic symptoms. At endoscopy gastric mucosal biopsies were taken in order to identify Helicobacter pylori (H. pylori) using three different techniques: culture, histology and the rapid urease test. Normal looking mucosa was the commonest single endoscopic finding, accounting for 34.2%, followed by gastritis 31.7% and duodenal ulcer 29.2%. However, when duodenal ulcers and gastric ulcers were put together, then peptic ulcer was the most prevalent finding accounting for 38.4%. Peptic ulcer was the most prevalent pathological finding in both young (less than 50 years) and older patients (50 years and above). Duodenal ulcer was more prevalent than gastric ulcer in the younger age group with a ratio of 5.8:1, however, the ratio in the older age group was 1:1. Gastric cancer was only found in patients aged 50 years and above, accounting for 17.4% of dyspeptic symptoms in this age group. Females were found to have more normal endoscopic findings than males (59.6%, versus 17.8% respectively). The difference being statistically significant (p < 0.001). All our cases of peptic ulcer disease had evidence of H. pylori infection while dyspeptic patients with normal endoscopic mucosal findings had H. pylori in 80.5% of cases. The difference in prevalence of H. pylori in the two groups was statistically significant (p < 0.001). Surprisingly, evidence of H. pylori in gastric cancer cases was very low in this study, being found in only 25% of patients.

Prevalence of intestinal parasites in Kenyans with dyspepsia.

Dyspepsia and intestinal worm infestation are both common clinical conditions in a developing country like Kenya and thus this study was designed to look at the correlation between the two in a referral gastroenterology clinic at Kenyatta National Hospital. One hundred and twenty five patients with dyspepsia had their stool, duodenal aspirate and duodenal biopsy analysed for evidence of intestinal parasites. Seven (5.6%) were found to have various types of intestinal parasites with giardia lamblia comprising 42.8% of worms isolated. 71.4% of patients with dyspepsia and worm infestation had their symptoms improved after deworming, but the low prevalence of intestinal parasite in dyspeptic patients makes routine deworming not cost effective. Stool examination had the best yield for intestinal parasites.