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Biomedical subjects

M E Turner

Publications and source records attributed to M E Turner.

At least 55 records · Page 3Linked to original sources
PubMed1976

Distribution of 8 trace metals in beef heart tissue.

The concentrations of 8 trace metals in 15 discrete anatomic sites of 11 beef hearts have been determined by emission spectrometry. The metals determined were copper, aluminum, barium cesium, tin, strontium, lead, and molybdenum. Anatomic sites samples included aorta, main pulmonary artery, tricuspid valve, mitral valve, right and left coronary arteries, os cordis, right atrium, left atrial appendage, right and left ventricles (free wall), left ventricle-papillary muscle, interventricular septum, crista supraventricularis, and left bundle branch. Statistical analysis of the data incorporated a multivariate analysis of variance and a Duncan analysis. The results showed that many tissues of the beef cardiovascular system have distinctive trace metal compositions.

Aluminum↗
PubMed1976

Use of pattern recognition to classify beef cardiovascular tissues on the basis of their trace metal compositions.

The pattern recognition procedure of discriminant analysis has been used to characterize the trace metal profiles created by the concentrations of 8 trace metals in 15 anatomic sites of beef heart tissue. Metals analyzed were copper, tin, lead, molybdenum, strontium, cesium, barium, and aluminum. Anatomic sites sampled included main pulmonary artery, aorta, mitral and tricuspid valves, left and right coronary arteries, os cordis, right atrium, left atrial appendage, crista supraventricularis, left bundle branch, free wall of the right and left ventricles, interventricular septum, and papillary muscle of the left ventricle. The striking features of the data were: (1) All specimens of the mitral valve, tricuspid valve, and os cordis were ambiguously described by their trace metal profiles; (2) the four blood vessels constituted two groups of two tissues each (aorta, main pulmonary artery; left and right coronary arteries); (3) tissues derived from ordinary and specialized myocardium were quite different from blood vessels, heart valves and os cordis. Using these profiles, 85% of the specimens analyzed were correctly classified by discriminant analysis with respect to their anatomic origin.

Aluminum↗
PubMed1975

Sudden death in patients evaluated for ischemic heart disease.

Data from 981 patients evaluated for ischemic heart disease with coronary angiography were reviewed to identify variables predictive of sudden death and duration from onset of symptoms to death. During the period of follow-up, 113 patients died. Of these deaths, 99 were classified as cardiovascular. Forty percent occurred within 1 hour of onset of symptoms, 34% within 24 hours, and 25% in greater than 24 hours. Patients prone to sudden death were characterized as having severe multiple-vessel disease in combination with left ventricular dysfunction and disturbances in intraventricular conduction and rhythm. The best five-variable model to predict sudden death in these patients included the following variables: number of vessels greater than or equal to 70% obstructed (P less than .001); therapeutic requirement of inotropic (P less than .003) and diuretic (P less than .006) drugs; premature beats (P less than .006); and ventricular conduction defects (P less than .008). Additional variables were related significantly to the duration of the terminal episode. These data are preliminary, but indicate the possibility of identifying patients prone to sudden death.

Age Factors↗