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Biomedical subjects

O Hirose

Publications and source records attributed to O Hirose.

46 records · Page 3Linked to original sources
PubMed1981

[Myocardial imaging with thallium -201 in the patients with coronary involvement after Kawasaki disease (author's transl)].

Coronary cine-angiography (CAG) was performed in 290 cases with the history of Kawasaki disease, in whom 57 cases (19.6%) were found to have coronary involvements. In 42 out of these 57 cases, myocardial imaging with thallium-201 (201Tl) was performed, and abnormal findings were seen in 6 cases. Five of these 6 cases showed not only coronary aneurysms, but also coronary obstructive lesions on CAG, while the remaining case showed only coronary aneurysms. The decrease of the uptake of 201Tl by the myocardium appeared to be mainly due to the decrease of regional myocardial blood flow, especially in those cases with obstructive lesions. Myocardial imaging with 201Tl seems to be more sensitive than stress electrocardiography by treadmill to detect myocardial ischemia in the patients with coronary obstructive lesions, although it seems less sensitive than stress electrocardiography to detect coronary arterial stenosis.

Adolescent↗
PubMed1981

[Two-dimensional echocardiography of coronary artery in Kawasaki disease (MCLS): detection, changes in acute phase, and follow-up observation of the aneurysm (author's transl)].

Two-dimensional echocardiography (2-D echo) was performed before coronary angiography in 213 patients (pts), 4 months to 12 years old, with a history of Kawasaki disease (MCLS). In 10 pts, 2-D echo was performed almost everyday during acute phase. In 23 pts, coronary artery aneurysms were followed up for more than 6 months by 2-D echo. In 32 of 213 pts, the presence of coronary artery aneurysms (9 pts with left, 4 pts with right and 19 pts with both coronary arteries) were proved by coronary angiography. The correct diagnosis was achieved prospectively by 2-D echo in 26 of 32 pts with coronary artery aneurysm (in 24 of 28 pts with left and 15 of 23 pts with right coronary artery aneurysm). In all 10 pts with acute phase of MCLS, an increased echocardiographic density around the coronary artery and of the coronary artery itself continued from the 4th or 6th day to the 10th day or near the second month of the illness. The findings were considered due to acute perivasculitis and vasculitis in the coronary artery. In 5 of 10 pts, the dilatation of coronary artery was demonstrated on about 6th day of the illness and in 3 pts was transient, but in other 2 pts the dilated coronary arteries grew up aneurysms on the 9th and 13th day of the illness. In 23 pts with coronary artery aneurysm followed up by 2-D echo for more than 6 months, 18 pts were started to observe within 6 months and 5 pts beyond 1 year after the onset of illness. In the former, the size of aneurysm was markedly reduced in 7, slightly reduced in 6, and did not change in 5 pts. On the other hand, it did not change in all the 5 pts of the latter. This study suggests that 2-D echo is very useful to diagnose noninvasively coronary artery aneurysm in pts with the history of MCLS and to detect and follow-up it in acute phase.

Aneurysm↗
PubMed1981

[Two-dimensional echocardiographic diagnosis of congenital malformations of the aorta in infants and children (author's transl)].

Two-dimensional echocardiographic studies were performed in 23 patients with coarctation of the aorta, 5 with interruption of the aortic arch, 6 with supravalvular aortic stenosis, 3 with truncus arteriosus, 2 with anomalous origin of the right pulmonary artery from the ascending aorta and 2 with aorto-pulmonary septal defect. The diagnosis was confirmed in each patient by surgery and/or cardiac catheterization and angiography. Visualization of the junction of isthmus and the descending aorta was possible in 18 of 23 patients with coarctation by two-dimensional echocardiography. In 13 patients correct diagnosis was obtained prospectively and in 2 patients coarctation was detected retrospectively. In only one of the 5 patients with interruption correct diagnosis was obtained and in 3 patients it was difficult to differentiate interruption from coarctation. In 5 of the 6 patients with supravalvular aortic stenosis, visualization of the area of obstruction was possible to two-dimensional echocardiography. In 2 of the 3 patients with truncus arteriosus, in whom none of the 2 had anomalous origin the right pulmonary artery from the ascending aorta and one of the 2 had aorto-pulmonary septal defect, correct diagnosis was obtained prospectively by two-dimensional echocardiography. Two-dimensional echocardiography may offer a useful noninvasive method for the direct visualization of aortic obstructive lesions and aortic malformations.

Angiography↗
PubMedDate not supplied

Common pulmonary vein atresia: a successfully corrected case.

Common pulmonary vein atresia is a rare congenital cardiac anomaly in which there is no communication between the confluence of the pulmonary veins and the heart or the major systemic venous system. We successfully treated this disease in a 5-day-old boy by performing an anastomosis of the left atrium to the common pulmonary vein. Only one patient with this lesion who survived this procedure has been reported in the literature. Early recognition of this lesion and immediate surgical intervention are the only way to save the patient's life.

Echocardiography↗