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Biomedical subjects

H Shono

Publications and source records attributed to H Shono.

44 records · Page 3Linked to original sources
PubMed1989

[A case of cardiac sarcoidosis with various electrocardiographic change].

The patient was a 61 year old woman of Japanese who was in good health until May 1983, when she came to our hospital because of the visual disturbance. The chest X-ray film showed bilateral hilar lymphadenopathy and a transbronchial lung biopsy revealed sarcoid granuloma. She received systemic steroids (10 to 40 mg/2 days of prednisolone) for visual disturbance from August 1983 to May 1986. Then steroid therapy was suspended temporarily. In August 1987, she was readmitted because of syncopal episodes. She was noted to have irregular bradycardia and the electrocardiogram revealed atrioventricular block and paroxysmal polymorphous ventricular tachycardia. Initially cardioversion to sinus rhythm was accomplished with direct current electric shock and temporary pacemaker was inserted and subsequently a permanent transvenous demand pacemaker implanted. The patient then became asymptomatic. Coronary arteriography revealed no significant organic stenosis and left ventriculogram showed a left ventricular aneurysm of the inferior wall of the left ventricle. A transvenous percutaneous right ventricular endomyocardial biopsy revealed non-specific myocardial degeneration with slight interstitial fibrosis. Thallium-201 myocardial perfusion scans revealed the inferior left ventricular defects. We conclude the syncopal episodes and electrocardiographic abnormalities of this case were due to massive myocardial sarcoidosis which caused left ventricular aneurysm.

Cardiomyopathies↗
PubMed1986

[Value of right ventricular and atrial collapse in identifying cardiac tamponade].

Collapse of the right ventricle and right and left atria is observed in cardiac tamponade. To assess the diagnostic value of each collapse component in identifying cardiac tamponade, two-dimensional and M-mode echocardiograms were recorded simultaneously with the measurement of intrapericardial pressure in five patients as they underwent pericardiocentesis. Before pericardiocentesis, each patient had evidence of right ventricular and right atrial collapse. In addition, left atrial collapse was observed in four patients. During pericardiocentesis, left atrial collapse initially resolved accompanied by a drop in pressure in the pericardial sac. Continuous drainage of pericardial effusion resulted in significant symptomatic improvement and the cessation of paradoxical pulse at the point of resolution of right ventricular collapse. However, right atrial collapse persisted after resolution of right ventricular collapse, but it was absent when pericardiocentesis was completed. Injection of saline solution with heparin into the pericardial sac for cleansing initially caused right atrial collapse, while right ventricular collapse developed with the appearance of cardiac tamponade. In one patient, the simultaneous recording of right ventricular and intrapericardial pressures and two-dimensional echocardiograms demonstrated that right ventricular collapse occurred early in diastole, when intrapericardial pressure exceeded right ventricular pressure. In conclusion, right ventricular collapse is the most reliable sign of cardiac tamponade. Right atrial collapse occurs in the early stage of cardiac tamponade. Left atrial collapse appears very late in the course of hemodynamic deterioration due to cardiac tamponade.

Adult↗