Carl-Olof Ovenfors

CLINICAL AND HAEMODYNAMIC RESULTS OF AORTIC VALVE REPLACEMENT WITH THE BJORK-SHILEY TILTING DISC VALVE PROSTHESIS

One hundred and one patients with aortic valve disease, aortic stenosis 29 patients, aortic insufficiency 29 patients and combined lesions in 43 patients, underwent valve replacement with the Bjork-Shiley tilting disc prosthesis. Early and late mortality rate 8% and 3% respectively. Six patients died in heart failure, 2 after a myocardial infarction, one due to cardiomyopathy, one of septicaemia and one due to carcinoma of the stomach. No thrombo-embolic complications were encountered.Fifty-seven of the patients were subjected to a follow-up study 6 to 8 months after surgery, including right and left heart catheterization. All these 57 patients were subjectively improved by the operation and 30/57 were considered to be in an excellent clinical condition.The heart volume in supine decreased on average 20% after operation. The exercise tolerance (Wmax) increased in 24/57 patients. There were marked decreases in left ventricular systolic and end diastolic pressures. Pulmonary arterial and right heart pressur...

Effect of Physical Training on School-Children with Cerebral Palsy

There is a shortage of data concerning the physical working capacity of young persons suffering from cerebral palsy (CP) and the degree to which the oxygen transport capacity of the respiratory and circulatory system can be increased of the individual. Children and young persons with CP run the risk of becoming inactive as a result of their motor disturbances. This risk has been considered most serious also in nonmotor-disturbed handicapped groups, for blind patients by Mossfeldt & Sjostrand, 1960 [ l l ] , and in chronic mentally-ill patients, by Carlsson et d., 1965 [5 ] , who reported a favourable development of the patients physical capacity following systematic physical training. A group of school-children with CP underwent systematic training in order to increase their physical working capacity. To measure the results of this training, heart volume, oxygen uptake, heart rate and blood lactic acid were determined during submaximal work before and after training.

The Disc Rotation in Patients Operated Upon with the Björk-Shiley Tilting Disc Valves with Radiopaque Markers

The Bjork-Shiley tilting disc valves have now been followed-up for more than 2 years, both in the aortic area (142 cases) and in the mitral area (57 cases). The clinical and haemodynamic results have been excellent. No failure of the delrin disc has been observed. This disc has, after accelerated test, been estimated to have a lifetime of 20 to 30 years without rotation and significantly longer if the wear is more evenly distributed by rotation. This radiographic investigation of discs with embedded radiopaque markers has proved that a rotation of the discs actually occurs postoperatively, both in the aortic and in the mitral valve prostheses.

Coronary Angiography in 100 Cases of Ischemic Heart Disease

As late as the end of 1940 available contrast media for cardiovascular examinations were relatively toxic. Selective angiocardiography and thoracic aortography had therefore usually to be performed under general anesthesia. In order to avoid motion blur due to respiration, the lungs were inflated and kept in an inspiratory position during the film exposures. A striking improvement of the quality of the exposed films could be observed when the examination had been performed with a moderate inflation of the lungs. In 1955, Boerema and Blickman (2), in experiments on dogs, obtained better angiocardiographic films when the intrabronchial pressure was elevated. Due to the obstruction of inflow to the right side of the heart, a decreased flow of blood was induced, with a consequent reduction in dilution of the medium. Other effects in cardioangiography may also be obtained by elevation of the intrabronchial pressure, as demonstrated in animal and man by one of us (10). With sufficient deceleration of the blood ...

Results of Surgery for Congenital Pulmonary Stenosis: Comparison of the Transventricular and Transarterial Approaches

Clinical and physiologic data before and after operation are presented in 2.5 patients who underwent surgical correction of congenital pulmonary stenosis with intact ventricular septum. Sixteen patients were operated on by the transventricular approach, 7 by the transarterial route, and 2 had infundibulectomies. Postoperative changes in the clinical status, phonocardiogram, electrocardiogram, x-rays, and right heart catheterization values are discussed. Comparison is made of the 2 major operative technics both in the present group and in cases gathered from a review of the literature.

Aspiration biopsy diagnosis of neurogenous mediastinal tumours.

RINGERTZ & LIDHOLM (1956) reported that neurogenous tumours constituted nearly a third of the mediastinal tumours in a material of 155 of their own and 251 previously reported cases. Thymomas and teratomas are predominant in the anterior mediastinum with intrathoracic goitres, bronchogenic cysts and lymphomas in the superior and middle parts, and neurogenous tumours usually in the posterior mediastinum (SCHLUMBERGER 1951, OBERMAN & ABELL 1960). It is difficult to specify the exact incidence of the various types of tumours. The number of cases reported in the early literature is remarkably low, and SCHLUMBERGER (1951) considered the increase to be due to improvements in thoracic surgery. RINGERTZ & LIDHOLM (1956) demonstrated the close relationship between the number of mass chest roentgen examinations carried out and the number of cases of mediastinal tumours diagnosed. Improved techniques in the roentgen examination of the thorax have doubtless provided better means of establishing the nature of mediastinal masses. Neurogenous mediastinal tumours appear as well-defined, rounded, and often globular, masses without calcification and become readily apparent when they bulge into the air-filled lung. The typical localization is paravertebrally in the

Experiences of Revascularization Procedures for Angina Pectoris

46 patients have been operated for severe angina pectoris. Vinebergs procedure and in some cases modifications thereof has been utilized. Follow-ups in 29 patients have been made. Our conclusion is that the use of Vinebergs operation should be avoided in cases in which the circulatory disturbances do not afflict the anterior wall of the left ventricle, and that if the procedure is recommended as a routine operation, objective methods should be worked out so that its value may be definitely established.