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Biomedical subjects

M Tadokoro

Publications and source records attributed to M Tadokoro.

At least 145 records · Page 8Linked to original sources
PubMed1979

Recent experiences with the Mustard procedure for the complete transposition of the great arteries by means of "bypass hypothermia".

This paper presents our recent results of the Mustard procedure (intra-artrial baffle operation) for the complete transposition of the great arteries performed in 24 infants and children during the past 6 years at the Tohoku University Hospital. All intracardiac repairs were performed using "bypass hypothermia" (surface-induced deep hypothermia, circulatory arrest, and limited cardiopulmonary bypass). The hospital mortality rate was 8% in patients with simple transposition without pulmonary hypertension (Group I, one death in 12 patients), 50% in patients with ventricular septal defect (VSD) and pulmonary hypertension (Group II, 3 deaths in 6 patients), and 20% in patients with VSD and pulmonary stenosis (Group III, one death in 5 patients). Various types of longstanding dysrhythmia were found in 6 out of 18 long-term survivors, and subsequent pace-maker implantation was necessary in one infant. Postoperative pulmonary venous obstruction occurred in 3 infants, and surgical relief of the obstruction was successfully undertaken in 2 of them. Prevention of postoperative dysrhythmia, pulmonary venous obstruction, and possible brain damage are also discussed.

Cardiopulmonary Bypass↗
PubMed1978

Diagnosis and surgical treatment of "angiographically absent pulmonary artery syndrome".

Among the heart diseases, there are some cases in which pulmonary arteries cannot be visualized by standard right ventriculography and aortography. We have categorized such a case as "angiographically absent pulmonary artery syndrome", which may include congenital or acquired absent pulmonary artery, and anatomically present but non-visualized pulmonary artery. It has been extremely difficult to achieve an accurate diagnosis in such cases and there has been no report of successful surgical treatment for them. Recently, we developed a method of retrograde pulmonary arteriography, with which the pulmonary artery can be successfully visualized in cases of angiographically absent pulmonary artery. Subsequently, re-establishment of the blood flow to the non-visualized pulmonary artery has been successfully performed in 7 of 8 cases of this syndrome. --angiographically absent pulmonary artery syndrome; retrograde pulmonary arteriography; surgical repair.

Adolescent↗
PubMed1976

Surgical treatment of large ventricular septal defect with pulmonary hypertension in the first 24 months of life.

A total of 74 patients under 24 months of age with large ventricular septal defects (VSD) and pulmonary hypertension were subjected to surgical treatment from 1969 through 1975. Emergency pulmonary artery (PA) banding was performed in 13 patients during the first year of life with 1 death from postoperative respiratory failure. Primary closure of the VSD was performed in 61 patients using simple hypothermia and short-term coronary perfusion, with an operative mortality of 1.6%. There were no late deaths or neurological disturbances. Normal hemodynamic data were obtained in all 7 patients who underwent postoperative cardiac catheterization from one month to five years after the primary correction. It is concluded that primary closure of a VSD in infancy is reasonable and that PA banding is indicated only for those patients less than 6 months old with a complicated defect or in an emergency situation.

Cardiac Surgical Procedures↗