Bleeding following bites by the Malayan Pit Viper can either be local or systemic. Bleeding at the site of the bite is due to the local action of the venom as a vasculotoxin. Systemic bleeding occurs with severe poisoning and appears to be mainly dependent on platelet deficiency and the co-existing defibrination syndrome appears to play a minor role in the initiation of bleeding. Thus in the clinical situation non-clotting blood with no overt bleeding can continue up to weeks when specific antivenene is not given. Assessment of the severity of poisoning can easily be made at the bedside. Specific viper antivenene rapidly corrects the spontaneous bleeding and clotting defect of severe systemic poisoning but has no effect on local poisoning.
To answer the question posed the terms of reference of local ethical committees as well as a few from overseas were reviewed. It was noted that these committees were established by various professional bodies and functioned independently. Guidelines for ethical practice and conduct were made available to the profession with compliance left to the individual doctor. Amongst the many ethical issues of concern both to the public and the profession was that of self regulation. It is being suggested that these concerns be addressed rather then set up a national body.
A study was done on patients admitted to Penang Hospital with malignant disease in 1995. A total of 1333 patients (638 male, 695 female) with 1335 malignancies were studied. The majority (77.3%) were aged 41-80 years. The commonest cancers in males were cancers of lung, nasopharynx, colon and rectum, leukemia and larynx whereas the commonest malignancies in females were of the breast, cervix, colon and rectum, leukemia and ovarian/lung carcinoma. The average number of admissions was 2.2 and the average length of stay was 12.7 days. Cancer admissions account for a significant proportion of the inpatient workload of Penang Hospital.
2,124 cases of cancer diagnosed and/or treated in Penang between 1987-1990 were reported to the National Cancer Registry of Malaysia by hospitals in Penang. 1,762 met the criteria for Penang incident cases first diagnosed between 1987-1990, and were the subjects on which all subsequent analyses were based. 85 per cent of case notifications were from Mount Miriam Hospital. Among males, all-site cancer incidence rates (age-standardised) were highest among Chinese, and lowest among Malays. Among females, the Indian female incidence rate was highest, higher than that of any other ethnic-gender sub-group. Site-specific cancer rates varied according to ethnicity and gender, but overall the four most frequent cancers reported from Penang were breast, lung, cervix and nasopharynx cancers. It needs to be emphasised that all these results are highly tentative since they are based on notified cancer occurrences and hence are very uncertain proxies for true cancer incidence. Based on incidence rates from the Singapore Cancer Registry (1978-1982), the expected number of incident cases in 1989 for Penang (Malays, Chinese and Indians combined) was 1,561. The number notified to the National Cancer Registry was 496. This underlines the tentative nature of this analysis of the returns for 1987-1990 from Penang.