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Biomedical subjects

D Figuera

Publications and source records attributed to D Figuera.

101 records · Page 6Linked to original sources
PubMedDate not supplied

Isolated mitral valve replacement with the Björk-Shiley prosthesis in 100 consecutive patients. Short- and long-term results.

Single mitral valve replacement with the Björk-Shiley tilting disc prosthesis was performed in 100 consecutive patients between March 1971 and December 1973. The hospital mortality was 13% and the late mortality was 6%. 74 of the patients were followed for periods ranging between 12 and 46 months (mean follow-up: 24 months): clinical improvement was noted in 92%. The incidence of postoperative embolism, including 1 case of prosthesis thrombosis, was 6.7%, and all cases occurred within the first 9 months after surgery. 6 patients required reoperation because of prosthesis dysfunction due to thrombosis (1 patient), leakage (3), and late disc entrapment (2).

Adolescent↗
PubMedDate not supplied

A new surgical technique for aneurysmal right atrium.

A new surgical technique for reduction in size of aneurysmal right atrium (ARA) is described. The extracorporeal perfusion is based on extrapleural single stage caval return and profound hypothermia, with circulatory arrest. This method enabled us to diminish the cavity dimensions in the presence of a giant friable ARA, by excising the thinned portion of the free atrial wall and double-layer closure of the remaining edges (close to the AV groove) to the crista terminalis.

Female↗
PubMedDate not supplied

Surgical treatment of the "parachute mitral valve" complex in infancy (report of a case).

The case is presented of a 15-month-old male, affected by severe mitral valve regurgitation associated to aortic coarctation. The surgical treatment consisted in replacement of the mitral valve by a Hancock prosthesis followed, at a second state, by resection of the coarctation. The mitral insufficiency was secondary to an anomaly of the subvalvular apparatus of the "Parachute Valve" type. The incidence of defects associated to congenital mitral insufficiency is commented. The surgical indications for replacement or repair of these anomalies in infancy are discussed, and the surgical results achieved to data are analysed. Emphasis is made on the convenience, in case the corrective procedure requires valvular replacement, of implanting a low-profile biological prosthesis, which does not require anticoagulant therapy.

Aortic Coarctation↗
PubMedDate not supplied

Prosthetic valve endocarditis after heart catheterization.

It is accepted that patients with valvular disease or valvular prosthesis should be protected against endocarditis during procedures causing bacteriemia. On the other hand it has been shown that bacteriemia occurs during catheterization. Thus, protection against endocarditis for patients undergoing catheterization deserves more consideration, specially among patients with prosthetic valves. Moved by the fatal outcome of one of our patients with postcatheterization prosthetic valve endocarditis, the authors leave an open discussion about this subject.

Adult↗
PubMedDate not supplied

Prevention of hypomagnesemia and hypocalcemia in open-heart surgery.

We have studied the behavior of calcium and magnesium in the serum in dogs subjects to cardiopulmonary bypass with total hemodilution (Ringer's lactate). 5 mEq/l of calcium and magnesium was added to the filling solution. Serum levels of Ca++ and Mg++ were determined, by atomic absorption spectrophotometry, in the basal state, every thirty minutes during the perfusion, and one hour after stopping the bypass. We observed that the calcium and magnesium levels were higher than be baseline throughout the perfusion, and even 60 minutes after stopping the bypass they were still noticeably higher. Since this type of perfusion yields normal final calcium and magnesium levels, the advantages of this method become obvious, especially considering the adverse phenomena that are caused by defiencies of these cations.

Animals↗
PubMedDate not supplied

Plasma levels of glucose and insulin during deep hypothermia with varying degrees of hemodilution in dogs.

The variations of plasma glucose and insulin levels were studied during the course of deep hypothermia with cardiocirculatory arrest of 60 minutes in 3 experimental groups of dogs using a pump mixture of homologous blood and Ringer's lactate solution at 33%, 50%, and 100% hemodilution. Insulin levels decreased in all groups during the cooling period and remained stable throughout the rest of the experiments, showing a slight significant increase only at the end of rewarming after a temperature of 30 degrees C was reached. Glucose levels reacted similarly except during rewarming, where an important increase in glucose concentration greatly preceded the rise in insulin. We stress the importance of this dissociation in view of the possible clinical implications that may exist.

Animals↗