Prevalence of delta virus infection in high risk population and hepatitis B virus related liver diseases.

Two hundred and fifty four high risk persons or patients with hepatitis B virus related liver disease (209 men, 45 women; age range 1-78 years) were tested for anti-delta antibody and IgM anti-HBc to determine the prevalence of delta agent coinfection and superinfection. The prevalence of delta infection was as follows: acute viral hepatitis 23/148 (16%) and chronic liver disease 17/92 (19%), and asymptomatic HBsAg carriers 1/6 (17%). In the high risk population, the delta antibody prevalence was as follows: multiple transfusion recipients 3/8 (38%), patients with chronic renal failure 1/5 (20%) and medical professionals 2/7 (29%). Of 44 patients (34 men, 10 women; age 3-63 years) with delta infection, 26 (59%) had coinfection and 18 (41%) had superinfection. Six patients with anti-delta antibody had received blood transfusion(s) and six others gave history of parenteral exposure.

Intensive respiratory care service. Organisation, orientation, system and future. Our experience of management of 288 cases.

Between Jan. 1983 and Dec. 1986, 288 patients with acute respiratory failure of varied aetiologies were admitted to tetanus and respiratory care ward. One hundred and twenty patients (41.66%) had primary respiratory diseases, 107 (37.15%) of poisoning, 24 (8.3%) had neuromuscular diseases and 37 (12.48%) had miscellaneous disorders. Ventilatory support was given for more than 6 hours to 118 patients. The overall survival was 61.81% and on ventilator 38.13%. The mortality was high with ARDS (100%), miscellaneous (100%) pneumonia with septicaemia (75%) and COAD (54.28%). Patient with COAD had high mortality with acidosis (pH less than 7.1, P less than 0.01), hypotension (systolic BP less than 90 mm of Hg, p less than 0.05) and oliguria (urine out put less than 400 ml/24 hours, p less than 0.05). Organophosphorus compound was the commonest poison (89.75%) and patients who had moderate to severe hypoxia (pO2 less than 60 mm of Hg), hypotension and an interval of more than 4 hours between the consumption of poison and admission (all P less than 0.05) expired; 68.18% expired within the first 72 hours. All the patients with primary neuromuscular paralysis and bronchial asthma survived. Hospital acquired infections (160 patients), retained secretions (108 patients) and hypotension (64 patients) were the commonest complications seen in the 288 patients. Staphylococcus aureus (32.14%) was the commonest organism isolated. Financial constraints, drug shortages and frequent failure of machines were other major problems in the intensive respiratory care unit.