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Biomedical subjects

J F King

Publications and source records attributed to J F King.

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

High density lipoprotein cholesterol and coronary artery occlusion.

The relationship between the levels of high density lipoprotein cholesterol (HDLC) and the extent of coronary artery occlusion (ascertained by arteriography) was studied in four hundred male patients. The group with HDLC levels over 50 mg/dl showed a significantly lower coronary artery occlusion score and lower plasma triglyceride levels than the patients with HDLC levels less than 35 mg/dl. The former group also imbibed more alcohol and had less smoking experience.

Arteriosclerosis↗
PubMed1976

Nonsurgical removal of foreign body from right heart. A new percutaneous approach.

A new method is described for the nonsurgical removal of foreign bodies from the right heart. By means of the percutaneous Seldinger Technique, endoscopic forceps were passed throught the internal jugular vein to remove a fragment of polyvinyl catheter from the right atrium of a patient who had had heart surgery. The procedure is atraumatic and can be performed on patients who are critically ill and those who recently have had surgery.

Cardiac Catheterization↗
PubMed1976

The "bad" left ventricle. Results of coronary surgery and effect on late survival.

Between 1968 and 1971, 252 patients with severe ventricular malfunction underwent revascularization surgery. By means of single-plane ventriculography, the ventricle was divided into six segments, three anteriorly and three inferiorly, and ejection fractions were calculated. Patients were classified into four groups according to these observations. Results were assessed in regard to relief of angina, graft patency status, surgical mortality rate, and survival as determined by actuarial life-table analysis. These results were then compared to over-all medical and surgical experience contained in the Milwaukee Cardiovascular Data Registry as well as to other reported series of medical treatment for similar degrees of coronary artery disease and impairment of left ventricular function. Comparison between the surgical and medical series suggests improved survival and improved quality of life in the surgically treated patients. Thus many patients with severe ventricular malfunction, especially if associated with angina, can be reasonably considered candidates for surgery.

Coronary Disease↗
PubMed1975

Reappearance of anterior QRS forces after coronary bypass surgery. An electrovectorcardiographic study.

This report describes the reappearance of anterior QRS electrical forces in six patients after direct coronary arterial bypass surgery. Each patient had severe coronary artery disease including a segmental stenosis of the left anterior descending artery. Revascularization was performed by direct anastomosis of the left mammary artery to the left anterior descending coronary artery and saphenous vein bypass of other stenotic coronary arteries. Preoperative electrocardiograms and vectorcardiograms showed patterns of anterior wall myocardial infarction with absent or diminutive anterior QRS forces. In each case, postoperative studies demonstrated the regeneration of anterior QRS forces within 10 days of operation. Although these patients represent a small percent of those with a preoperative pattern of infarction who undergo coronary revascularization, the findings demonstrate that electrically silent areas of myocardium may be altered and are not always synonymous with myocardial cell death. Chronic myocardial ischemia may in certain instances produce electrocardiographic and vectorcardiographic patterns of myocardial infarction that may be reversible upon reestablishment of perfusion to ischemic areas.

Adult↗
PubMed1975

Echographic assessment of atrial transport, mitral movement, and ventricular performance following electroversion of supraventricular arrhythmias.

Controversy attends the extent and temporal sequence of improvements in hemodynamic function resulting from the return of atrial contraction following cardioversion of supraventricular arrhythmias. Thus, mitral, left atrial (LA) and left ventricular (LV) echograms were obtained before and one hour after conversion of supraventricular arrhythmias to normal sinus rhythm by direct current countershock in patients with chronic coronary disease or cardiomyopathies without valvular dysfunction. The duration of the rhythm disturbance varied from one day to five years in 22 patients and was indeterminate in 13. Atrial systole immediately produced prominent mitral "A" waves with anterior valve excursion of 7.5 mm (range 3 to 12) in 33 of the 35 patients (94%). The two patients with atrial electromechanical dissociation reverted to atrial fibrillation within one week. Cardioversion caused a decline in LA diameter (3.5 to 3.2 cm, P less than .001) and a rise in LV end-diastolic dimension (5.2 to 5.5 cm, P less than .001) while LV end-systolic dimension was unchanged (4.2 cm). Thereby stroke volume rose. Heart rate fell an average of 16 beats/min. Depressed cardiac output was improved + 0.84 L/min/m-2. Thus, in the majority of patients with acute or chronic supraventricular arrhythmias without mitral valve disease, cardioversion promptly restores effective atrial contraction, decreases LA size, and results in substantial hemodynamic benefit.

Adult↗
PubMed1975

Echography and phonography of acute aortic regurgitation in bacterial endocarditis.

Since management of acute aortic regurgitation in bacterial endocarditis is enhanced by early recognition, echocardiography and phonocardiography were evaluated in three such cases documented by catheterization and surgery without positive blood cultures and compared to echophonograms of 34 patients with aortic regurgitation of other origins. Endocarditis manifested distinctive, thickened, irregular aortic leaflet echoes with normal systolic excursion and mitral echopreclosure with anterior leaflet fluttering. Mitral preclosure resulted in mid- or end-diastolic crescendo murmur accompanied by soft first heart sound. Aortic echograms in nonendocarditis showed either widened root, diminished leaflet excursion, absence of irregular valvular thickening, or normal leaflets, all without mitral preclosure. This study shows specific echophonographic findings of aortic regurgitation due to endocarditis that enable diagnosis of this condition in the absence of positive blood cultures.

Acute Disease↗