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Biomedical subjects

T O Cheng

Publications and source records attributed to T O Cheng.

At least 703 records · Page 39Linked to original sources

Evidence for specialized atrioventricular conduction in hyperkalemia.

A patient who had chronic coarse atrial fibrillation developed severe hyperkalemia accompanied by total loss of fibrillatory waves while an irregularly irregular ventricular rhythm persisted. Correction of hyperkalemia resulted in prompt return of coarse atrial fibrillation. This sequence of events renders strong support to direct atrioventricular conduction through the specialized internodal tracts.

Aged↗

His bundle electrogram in congenitally corrected transposition of the great vessels.

His bundle electrogram was recorded in a young adult male with corrected transposition of the great vessels and single ventricle. Prolonged PA and AH intervals, wide diphasic His spike, and normal HV intervals were found. These findings are suggestive of the diffuse nature of conduction delay in this congenital lesion involving intra-atrial, AV nodal, and intra-His regions.

Adult↗

Electrocardiographic abnormalities in alcoholic cardiomyopathy. A study of 65 patients.

Electrocardiograms of 65 patients with alcoholic cardiomyopathy seen over a five-year period were reviewed. ST segment and T wave abnormalities, left ventricular hypertrophy, biatrial enlargement, left atrial enlargement, premature ventricular contractions, prolonged PR interval, and left anterior hemiblock are the most frequently encountered abnormalities. A combination of left ventricular hypertrophy and biatrial enlargement with or without left anterior hemiblock is most specific, Atrial flutter or fibrillation, pathologic Q waves, and bifascicular block are not uncommon findings, while isolated right atrial or right ventricular abnormalities, and isolated posterior hemiblock or right bundle branch block are rare. Electrocardiographic changes are in general similar to those seen in any diffuse cardiomyopathy and reflect biventricular involvement.

Adult↗

Medical education and practic in People's Republic of China.

A dramatic adaptation of medical education to meet indigenous needs and circumstances has occurred in the People's Republic of China in the context of a highly structured health care delivery and medical referral system, entailing a reduction in curriculum length from 6 to 3 years. Although general directions and guidelines are set centrally by Peking, considerable autonomy and flexibility exist in individual schools. The innovative approaches used include training medical students in countryside and factories as well as medical schools, combining traditional Chinese and modern Western medicine, opening hospital-run medical schools, and using unconventional methods of producing medical doctors. On graduation the students generally return to the communities from which they came. Although the total number of medical graduates still falls short of national requirements, the problem of maldistribution of physicians has been alleviated in China. Medical care is now readily available in rural areas, where 80% of the population resides.

China↗