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Biomedical subjects

A Lindner

Publications and source records attributed to A Lindner.

At least 235 records · Page 13Linked to original sources

Echocardiographic findings of ventricular septal rupture in acute myocardial infarction.

Echocardiograms were recorded both before and after the clinical appearance of an autopsy-confirmed interventricular septal rupture in a patient with an acute myocardial infarction. The major findings were related to the upper portion of the interventricular septum. Before rupture, this portion of the septum was relatively akinetic with a slight anterior motion during systole, whereas after rupture there was a marked increase in the amplitude of septal motion with abrupt posterior motion occurring with the onset of ventricular diastole.

Acute Disease↗

Quantitative measurement of delayed hypersensitivity in the guinea pig paw.

To facilitate quantitative measurement of a delayed hypersensitivity reaction, a tuberculin reaction was produced in the paws of sensitized guinea pigs and the resulting edema estimated by one of the usual techniques. The edema formation was shown to be an expression of the delayed hypersensitivity reaction. Optimal conditions for this reaction were assessed. This model may be used for testing the influence of drugs on delayed hypersensitivity reactions.

Animals↗

The pharmacokinetics of procainamide in normal subjects using a specific gas chromatographic assay.

Previous procainamide pharmacokinetic studies have involved the use of colorimetric and fluorimetric methods for the determination of drug concentrations in plasma and urine. However, recent evidence shows that N-acetyl procainamide, the major metabolite in humans, is hydrolyzed during these assay procedures. As a result, a specific gas chromatographic method has been developed for the determination of procainamide in biological fluids. Using this assay procedure, the pharmacokinetics of procainamide were studied in 7 normal subjects following intravenous administration of the drug. The values of half-life (2.08 +/- 0.52 hr), volume of distribution (4.3 +/- 0.6 1/Kg) and total body clearance (1344 +/- 238 ml/min) found in this study differed from those previously reported. These discrepancies could be understood in terms of differences in assay specificity.

Blood Pressure↗