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Biomedical subjects

R Henker

Publications and source records attributed to R Henker.

4 recordsLinked to original sources
PubMed1991

Cardiac assist devices as a bridge to cardiac transplant.

The number of heart transplants being performed in the United States over the last decade has increased significantly. The supply of human donor hearts has not kept up with the demand. This situation has led to the development of means to support patient's cardiac function until a human donor heart can be obtained. Methods to support the patient include use of ventricular assist devices and the total artificial heart. Integration of caring and technology in patients receiving cardiac assist devices (CADs) provides a challenge for critical care nurses. Nursing care of the patient with a CAD involves identification and prevention of complications, familiarization with new technology, and development of a caring environment.

Electrocardiography↗
PubMed1988

Effects of pneumatic artificial heart driver on the rate of isovolumic pressure rise.

The aim of the research was to investigate the effects of three parameters of the artificial heart's performance on the (+) dP/dt max. Specifically, the effects of heart rate, left-sided drive pressure, and percent systole (the independent variables) on the (+) dP/dt max (the dependent variable) were examined. The study was conducted using a mock circulation which was connected to an artificial heart. Data were collected using the COMDU software developed for the computer which monitors the artificial heart. Stepwise regression analysis was used to test the three hypotheses. Hypothesis one stated the heart rate would significantly effect the (+) dP/dt max. The hypothesis was not supported. Hypothesis two stated the percent systole would significantly effect the (+) dP/dt max. Hypothesis two was also not supported. Hypothesis three stated the drive pressure would significantly effect the (+) dP/dt max. The hypothesis was supported as drive pressure accounted for 4% of the variance in (+) dP/dt max; however, the results were not clinically significant. Limitations in the study were multicollinearity among the independent variables, small sample size, and the inability of the mock circulation to represent human responses.

Heart Rate↗
PubMedDate not supplied

A program evaluation instrument.

The evaluation of education programs provides valuable information for the program coordinator or instructor. The Program Evaluation Instrument (PEI) was developed with the use of various educational settings and subjects. The PEI provides a valid, reliable instrument that is generalizable to a variety of programs.

Attitude of Health Personnel↗