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Biomedical subjects

P Michaud

Publications and source records attributed to P Michaud.

At least 109 records · Page 6Linked to original sources
PubMed1980

[Anomalous origin of the left coronary artery from the pulmonary artery. Treatment by left subclavian-left main coronary artery anastomosis].

The technique of left subclavian-main left coronary artery is described as the treatment of anomalous origin of the left coronary artery from the pulmonary artery, without the aid of cardiopulmonary bypass, which, however, remains on standby. Through a left postero-lateral thoracotomy, the left main coronary artery is detached from the main pulmonary artery with a cuff of pulmonary wall after lateral clamping of the pulmonary artery. Tapes are encercling the pulmonary artery and the descending thoracic aorta, making them ready for an eventual connection to the standby bypass, in case the coronary clamping is not well tolerated. The anastomosis between the left subclavian artery dissected free and the prepared left main coronary artery is then possible and easy even in a small infant. This technique has been used in three infants aged three to thirty months without any mortality nor particular morbidity.

Child, Preschool↗
PubMed1980

[Palliative treatment of transposition of the great vessels. Indications and results. (author's transl)].

From 1973 to 1977, 93 infants (63 newborns) with d-TGA were treated with Blalock-Hanlon operation. All children had Rashkind atrioseptostomy at birth. 65 infants with isolated TGV were operated upon with two deaths (3%) and without any complication. 18 patients with TGV and VSD were treated with Blalock-Hanlon operation and Pulmonary Artery Banding and resulted in 5 deaths (28%). The other 10 cases had complex lesions. The overall operative mortality is 8.6%. The late mortality is 3.5%. The authors conclude that the Blalock-Hanlon operation is a safe procedure even in complex lesions. This kind of surgery does not seem to induce any arythmias but the authors did not perform any 24 hours ECG recording. This type of surgery makes the repair (Mustard operation) easier since the atrial septum is already removed.

Heart Septal Defects, Ventricular↗
PubMed1979

[Results of surgical correction of ventricular septal defects in infants].

Of a consecutive series of 91 babies aged less than 2 years, operated on for closure of a ventricular septal defect during the last four years, the 61 cases with a minimum post operative follow up period of 18 months were retained for review. Closure of the ventricular septal defect was carried out directly 41 times, and after pulmonary artery banding in the other 20 cases, using deep hypothermia with a short period of circulatory arrest and cardiopulmonary bypass.

Age Factors↗
PubMed1979

[Traumatic coronary-cardiac fistulas. Apropos of a case].

The case of a 24-year old patient having suffered a bullet wound was reported. After a hemopericardium accompanied by minor signs of tamponade, a continuous murmur gradually appeared due to a fistula between the right coronary artery and the right atrium, which was strictly symptomless: surgical repair was performed eight years after the accident. This satisfactory spontaneous outcome, after surviving the life threatening danger of tamponade and myocardial infarction was also observed in the 21 cases of coronary-cardiac fistulae already published. The fistula, which almost always involves the right heart cavities, only gives rise to a continuous murmur which is often discovered at a later stage. The long term course of traumatic coronary-cardiac fistulae can only be assessed by comparison with congenital coronary-cardiac fistulae, which are much better known, and the consequences of which are on all accounts similar. Four complications are discussed: heart failure, coronary insufficiency, infectious endocarditis, and the rupture of the fistulized coronary artery due to aneurysmal dilatation. These risks are statistically small and more theoretical then real, and the justification of systematic repair of traumatic coronary-cardiac fistulae now rests essentially on the relatively low risk of the procedure.

Adolescent↗
PubMed1977

[Deep hypothermia on the infant: physiopathology and technics of ECC].

In 81 operations for correction of infants's cardiopathies, authors used, associated with E.C.C., a deep hypothermia allowing a circulatory arrest of an average duration of 52 minutes, according to the technics described by BARRAT-BOYES in 1971. From this experience, authors study the modifications brought to the organism by this hypothermia, and discuss the technical aspects in pre, per and post-operative periods. Mortality of this series is of 13,5 p. 100. It is in relation with the cardiopathy or it's correction, without anu possibility or directly charge the technique of hypothermia in its determinism. The early mortality includes a bilateral phrenic paralysis, an air embolism, three septic complications and two neurologic complications probably related to a poor thermic repartition. Advantages of this technique concern the possibility to operate in a bloodless field and a diminution of E.C.C. time.

Coronary Vessel Anomalies↗
PubMed1977

[Value of dacron aortoplasty in the treatment of coarctation of the aorta during the 1st six months of life].

Between September 1st 1974 and June 1st 1976, 12 infants under the age of 6 months have been operated on by a dacron patch aortoplasty for coarctation of the aorta. The associated lesions were a patent ductus arteriosus in each case, a VSD in 8 cases, and a trans-position of the great arteries in 5 cases. A pulmonary artery banding was performed with the aortoplasty in 8 cases, and a Blalock-Hanlon operation in one instance. There were two operative deaths (17 p. 100), amongst them one in a 1400 g premature infant, and a late death (3rd month). Two infants have a clinical aspect of recoarctation. In four infants, the post-operative hemodynamic and angiographic study carried out before the treatment of associated intra-cardiac lesions, shows a good result of the coarctation repair. This particular technique, although not performed as a routine in the infant with coarctation of the aorta, seems to be of interest in the most severe forms of the disease, with diffuse isthmus narrowing and intra-cardiac defects.

Aortic Coarctation↗