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Biomedical subjects

M Kusagawa

Publications and source records attributed to M Kusagawa.

At least 109 records · Page 6Linked to original sources
PubMed1985

Two-dimensional echocardiographic evaluation of right ventricular function during left heart bypass.

Right ventricular (RV) function in terms of hemodynamics and RV wall motion was studied in 14 mongrel dogs during left heart bypass (LHB) using a centrifugal blood pump. The wall motion was analyzed by two-dimensional echocardiography (2D-echo). Incremental changes in LHB flow ratios of 0% (controls), 25%, 50%, 75% and a maximum 85-100% were accompanied by decrements of segmental shortening of the interventricular septum (IVS) by 54 +/- 12%, 43 +/- 5%, 42 +/- 2%, 35 +/- 0% and 0%, respectively. In addition to akinesis of the IVS during maximum flow, a specific part of the RV free wall adjacent to the IVS also had marked depression of contractions and overall RV contraction was nearly dependent on the RV free wall opposite to the IVS. Maximum LHB flow induced complete depression of the left ventricular cavity, a marked increase in RV volume, and depression of the RV ejection fraction on 2D-echo. Excessive or prolonged LHB reduces the RV wall motion capability and may lead to right heart failure. Our results suggest that an LHB ratio of about 75% is optimum to maintain normal cardiac function, particularly that of the right heart.

Animals↗
PubMed1983

[Case of simultaneous multiple primary lung cancer].

The incidence of multiple primary bronchogenic carcinomas has increased in Japan as the incidence of bronchogenic malignancy has increased. The patient was a 71-year-old man with simultaneous multiple bronchogenic carcinomas. He had large cell carcinoma in the left upper lobe and adenocarcinoma in the left lower lobe. We reviewed 66 reported Japanese cases with multiple lung cancers with special reference to sex distribution, age, simultaneous or metachronous, location, histological types, treatment and prognosis.

Adenocarcinoma↗