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Biomedical subjects

H A Wellons

Publications and source records attributed to H A Wellons.

At least 55 records · Page 3Linked to original sources
PubMed1979

Total occlusion of left coronary artery. Incidence and management.

From July 1, 1972, to Jan. 1, 1978, 527 patients underwent coronary revascularization. In four (0.76%) of these patients arteriography demonstrated total occlusion of the left main coronary artery. The incidence of acquired occlusion of the left coronary artery encountered in the cardiac catheterization laboratory during the same period was 0.17% in patients undergoing coronary arteriography. Literature review reveals 13 patients with total occlusion of the left coronary artery, and only seven of these were treated operatively, some with suboptimal results. With an average of three grafts per patient, all four of our patients are in Class I of the New York Association an average of 23 months postoperatively. These patients were dramatically symptomatic preoperatively, and their clinical management in terms of pharmacologic or mechanical intraoperative support was no different from that of patients with critical stenosis of the left main coronary artery. This report documents the incidence of left coronary artery occlusion encountered in clinical practice. This incidence should not be as rare as the literature review suggests.

Angina Pectoris↗
PubMed1977

Absence of clinical pneumonia following bronchoscopy with contaminated and clean bronchofiberscopes.

Two hundred forty-nine fiberoptic bronchoscopy procedures were surveyed for the presence of bronchoscopy-related pneumonia. The first 103 procedures were performed during a period when the fiberscope was presemably contaminated with Pseudomonas aeruginosa. Chart review of these 103 procedures and prospective epidemiologic surveillance of the remaining 146 procedures revealed no cases of bronchoscopy-related pneumonia.

Bronchi↗
PubMed1977

Early operative intervention for complications of acute myocardial infarction.

Cardiac operations were performed on 21 patients for treatment of complications of acute myocardial infarction unresponsive to vigorous drug therapy. There were six hospital deaths (28.5 per cent) and 15 survivors 3 to 50 months postoperatively. Fourteen of the 15 survivors are asymptomatic (Class I N.Y.H.A.); one patient remains in Class III. The average time from infarction to operation was 7 days; operative mortality rate was unrelated to the time from infarction to operation. Five of six deaths were in patients with preoperative cardiogenic shock who were not supported by an external cardiac assistance device. The two survivors of cardiogenic shock, treated preoperatively with the intraaortic balloon pump (IABP), are now asymptomatic. Early operative intervention is recommended to decrease the mortality rate in patients with complications of acute myocardial infarction unresponsive to conventional medical therapy. Preoperative treatment with the IABP is advised for the patient in cardiogenic shock.

Adult↗
PubMed1976

Bronchial adenoma in childhood. Two case reports and review of literature.

A review of the literature discloses 56 cases of bronchial adenoma in children under the age of 16 years; we now report two additional cases. The diagnosis of bronchial adenoma in children is often delayed due to erroneous interpretation of the secondary manifestations of pneumonitis, fever, or wheezing. These tumors should be considered potentially malignant, since local invasion and metastasis have been reported in this age group. Treatment is by thoracotomy with total excision of the lesion.

Adenoma↗
PubMed1975

Resection of acute posterior ventricular aneurysm with repair of ventricular septal defect after acute myocardial infarction.

Three patients with true posterior myocardial infarctions and ventricular septal defects were treated by posterior infarctectomy, closure of the defect, and appropriate combinations of mitral valve replacement and coronary grafting. Aortic balloon pumping was not used. The technique of infarctectomy and ventricular septal defect closure is illustrated. Two of the 3 patients have excellent long-term results.

Aged↗
PubMed1975

Isolated mitral valve replacement with the Kay-Shiley disc. valve. Acturial analysis of the long term results.

During a five-year period the Kay-Shiley (K and T series) prosthesis was used for 83 isolated mitral valve replacements. There were 14 early deaths, for a 17.28 per cent mortality rate. Survival determined by the actuarial method revealed a 6 year cumulative survival rate of 39.8 per cent. Thromboembolism was a significant problem in this series, with 33 patients experiencing a total of 55 embolic events. This represented a rate of 24.7 emboli per 1,000 patient months at risk. From our experience, it is concluded that the Kay-Shiley prosthesis is associated with a high incidence of thromboembolism and late death.

Adolescent↗