Medicine
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This repository contains the published and unpublished research of the Faculty of Medicine by the staff members of the faculty
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Item Intestinal parasitic infections in primary school children in Mahiyangana district(Sri Lanka College of Microbiologists, 2000) Chandrasena, T.G.A.N.; Morel, R.P.; de Alwis, C.; Sudusinghe, H.P.; de Silva, N.R.Item Intestinal helminth infections among children in a slum community in Enderamulla(Sri Lanka Medical Association, 1999) Udayani, W.I.; Uduwevidane, K.; Uvais, A.L.; Wanniarachchi, S.L.; Warnakulasuriya, S.N.; de Silva, N.R.No Abstract availableItem Morbidity and mortality due to Ascaris-induced intestinal obstruction(Oxford University Press, 1997) de Silva, N.R.; Guyatt, H.L.; Bundy, D.A.P.We examined epidemiological aspects of Ascaris-induced intestinal obstruction (AI-IO) through analysis of published reports on the subject. In 9 studies of > or = 100 patients admitted to hospital due to ascariasis, intestinal obstruction was the single most common complication and accounted for 38-87.5% of all complications (weighted mean 72%). The proportion of intestinal obstruction caused by ascariasis was identified in 14 studies from 7 countries with varying degrees of endemic ascariasis. Using relevant data on the duration of the study, the number of beds in the reporting hospital, and the number of hospital beds/1000 population in the area, the number of cases of AI-IO/year/1000 population was estimated from 11 studies. Both the proportion of AI-IO (range 0-0.71) and the number of cases of AI-IO/year/1000 population (range 0-0.25) were significantly related, in a non-linear manner, to the local prevalence of ascariasis (range 0.01-0.92). In 12 studies of > or = 30 patients with AI-IO, the case fatality rates ranged from 0 to 8.6% (weighted mean 5.7%). The mean age of patients with AI-IO was < or = 5 years in 6 of 7 studies in which age was specified.Item Intestinal worms: our turn to turn(Sri Lanka Medical Association, 1995) de Silva, H.J.; de Silva, N.R.No Abstract AvailableItem Prevalence patterns of intestinal parasitoses among school children in Mahaweli System C: a new settlement in Sri Lanka(The Kandy Society of Medicine, 1993) Wijesundera, M. de S.; de Silva, N.R.; Ariyaratne, C.S.SUMMARY: Studentsattending three schools in the settlements of Bakmeedeniya, Ranhelagama and Nagaswewa in Mahaweli System C, were examined at approxi¬mately yearly intervals from December 1986 to November 1989, to assess the prevalence patterns of intestinal parasitoses in the area. The age of the students at the time of examination ranged from 5-19 years, with 89% being in the 5-14 year age group. The male:female ratio was 1:1.1. Faecal smears in saline and iodine were examined for protozoan cysts and helminth ova. Children positive for pathogens were given appropriate therapy. A total of 765 stool samples (from 496 children) were examined: 203 in 1986/87, 365 in 1988 and 197 in 1989. The prevalence of the soil-transmitted helminths was very low throughout, and the rates facAscarislumbricoides, Trichuristrtehiura and hookworm infection was always less than 4 %. Of the intestinal protozoan parasites, the cysts most commonly seen were those of Entamoeba coli, which was found at rates of 16%, 13% and 10% in 1986/87,1988 and 1989 respectively. The commonest pathogenic protozoan was however Giardia intestinalis (positivity rates: 10%, 10% and 8% respectively). lodamoeba butschlii was also detected at low levels, the rates being 3%, 1 % and 2% respectively. E. histolytica was not seen.