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Results for “Heart Function Tests”

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At least 73 records · Page 4Linked to original sources
PubMed1979

[Index of isometric contraction--a comparison with invasive methods of cardiac function testing in patients with ischemic heart diseases and post-myocardial infarct status].

In 81 patients with an ischaemic heart disease and myocardial infarction the evidence of the presphygmic index PI (non-invasive index) was tested concerning a beginning myocardial functional disturbance and a latent heart insufficiency, respectively, with the help of an invasive cardiopulmonary functional diagnostics which was performed under dosed bicycle ergometer load in the steady state. The presphygmic index PI correlates in significantly positive way with the end-diastolic pressure of the heart and the quotient from minute volume of the heart and the end-diastolic pressure of the pulmonary arteries (VM/PAEDP). The presphygmic index is on the basis of this correlation of the left-ventricular function suitable to establish disturbances of the myocardial functions and to give the possibility of a separation of the patients in cardially sufficient and cardially insufficient ones. Here the evidence of the presphygmic index might be larger concerning the recognition of a latent heart insufficiency than concerning the recognition of beginning myocardial functional disturbances. The presphygmic index apparantly possesses a high degree of sensibility then, when the myocardial functional disturbances coincide with a beginning reduction of the pumping action of the heart.

Adult↗
PubMed1995

Responses of workers exposed to vibration in autonomic nervous function tests.

Heart rate variation in quiet breathing and deep breathing tests and the response of blood pressure in a cold pressor test were measured in 34 railway workers and 13 lumberjacks. The age-adjusted results showed a significant relationship between exposure to hand-arm vibration and the coefficient of beat-to-beat variation in the quiet breathing test (CVS) in the railway workers. The vibration-induced white finger (VWF) and non-VWF subjects showed non-significant differences in respect of all the indices used. This investigation, in common with previous results, suggests that vibration might cause changes in cardiovascular reflexes, but the indices used here seem to be of low sensitivity, at least partially due to wide physiological variation; other more suitable indicators and studies of the pathophysiological background of the suspected effect are needed to confirm the results.

Adult↗