Effect of isocapnic hypoxia on systolic time intervals in conscious man.

Effect of isocapnic hypoxia on systolic time intervals in conscious man.

The effects of progressive isocapnic hypoxia on the systolic time intervals were studied in 10 healthy human subjects. We induced hypoxia by a rebreathing method and monitored the arterial oxygen saturation continuously and non-invasively by means of an ear oximeter. Arterial oxygen saturation (SaO2) was allowed to fall to a level of 75 per cent and was then held constant for five minutes. As S...

Effects of high altitude hypoxia on left ventricular systolic time intervals in man.

Effects of high altitude hypoxia on systolic time intervals were examined in 34 healthy men: 20 sea level residents studied at rest and at the end of 3 minutes steady isometric (handgrip) exercise at sea level and then serially for the first 5 days and on the tenth day, at an altitude of 3658 m, and I4 permanent residents at high altitude studied at high altitude. In the sea level residents the...

Systolic time intervals in heart failure in man.

Effect of orthostatic stress on systolic time intervals in rabbits.

Systolic time intervals (STI) are sensitive indices of myocardial function. The present study was conducted to evaluate the effect of orthostatic stress on STI before and after 70 degrees head up tilt (HUT) in rabbits. Electrocardiogram (ECG), phonocardiogram and carotid arterial pulse were recorded simultaneously on four channel polyrite (INCO). Within 1 second of tilt there was a significant ...

Effect of Yogasana Practice on Systolic Time Intervals

Therapeutic values of yoga practices are well documented in the ancient Indian literature. In this study an attempt has been made to see the effect of Yogasana practice on cardiac functions by measuring systolic time intervals (STI). The asanas studied are Sirsasana, Sarvangasana, Halasana, Paschimottanasana and Bhujangasana. Five healthy Yogasana practitioners who where practicing regularly fo...