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Biomedical subjects

A Johan

Publications and source records attributed to A Johan.

43 records · Page 3Linked to original sources
PubMed1980

Six-month's experience (July 1978--December 1978) in a medical intensive care unit.

The Medical Intensive Care Unit at Tan Tock Seng Hospital was established in October 1970. Additional beds were added to the Unit over the years and by June 1977 it had become a 10-beded Unit. A survey of admissions for a six month period from July 1978 to December 1978 was done to gain further insight into future needs. Six hundred and eleven patients were admitted during this period. Two thirds of the patients were over the age of 50. There were 451 (73.4%) with cardiovascular problem and 160 (26.6%) with other acute medical problems. Of the patients with cardiovascular problems, 232 had acute myocardial infarction. The duration of stay in the Unit was less than 3 days in 80% of the patients. The mortality rate was 15.7%.

Adolescent↗
PubMed1975

Ventricular septal deffect and aortic imcompetence: clinical and haemodynamic study of 12 cases.

The incidence of aortic incompetence complicating ventricular septal defect has been estimated as varying from 2-5% (Glasser et alii, 1972) to 5% (Nadas et alii, 1964). Although numerous publications have appeared describing the clinical, pathological and surgical aspects of this syndrome in different parts of the world, documentation of its occurrence in Asian patients has been rare except for reports from Japan (Tatsuno et alii, 1973; Mizuno and Saegusa, 1967). This paper describes our experience of 12 cases collected over 10 years.

Adolescent↗
PubMed1975

Ruptured aneurysms of the aortic sinus of Valsalva.

Aneurysms of the aortic sinus of Valsalva (ASV) are uncommon. This study describes eight cases of ruptured aneurysms of the congenital variety observed over a 10-year period in Singapore. Although ASV is classically diagnosed at the time of rupture, only one patient in this series presented with acute chest pain and dyspnea. All eight patients had continuous murmurs. The clinical diagnosis was confirmed by cardiac catheterization and angiography in eight patients and by thoracotomy in six. In six patients, the aneurysm had ruptured into the right ventricle and in two into the right atrium. In the five patients where the site of the aneurysm could be definitely determined, four arose from the right coronary and one from the noncoronary sinus. This marked preponderance of right coronary sinus over noncoronary sinus aneurysm in Singapore is more in accordance with the Japanese rather than the Western experience. A systolic gradient due to the aneurysm pressing on the right ventricular outflow tract was established in four patients during cardiac catheterization and angiography and confirmed in three patients at thoracotomy. Six patients underwent operation and were alive and well from 7 months to 3 years later.

Adult↗