Effect of Valsalva Maneuver on Oxygen Saturation in Patients with Intracardiac Shunts
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چکیده
منابع مشابه
Effect of Valsalva Maneuver on QT Dispersion in Hemodialysis Patients.
Increased QT dispersion seems to be related to an increased risk of arrhythmia and sudden death, a common cause of mortality in hemodialysis (HD) patients. Increase in sympathetic tone has been documented in HD patients. In this study, we aimed to investigate the effect of changes in the autonomic tone on QT dispersion (QTd) in HD patients. Twenty HD patients (M/F 13/7; age, mean ±SD, 28 ± 10 y...
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Background: Supraventricular tachycardia (SVT) is a relatively common dysrhythmia among the general population and a common dysrhythmia presenting to the emergency department. Generally speaking, it is assumed the provider should attempt a vagal maneuver as first-line treatment for SVT, and the most common vagal maneuver used is the Valsalva. Current resources describing the method to perform t...
متن کاملAltered effect of the Valsalva maneuver on left ventricular volume in patients with cardiomyopathy.
The failure of the blood pressure to fall during the late strain pase of the Valsalva maneuver in patients with heart failure may result from the left ventricle operating on a flat portion of its function curve or from maintenance of left ventricular volume despite decreased systemic venous return. To test these possibilities, we studied the effect of the Valsalva maneuver (40 cm H2O for 15 sec...
متن کاملEffect of Valsalva maneuver on pulse wave velocity.
Pulse wave velocity (PWV) was recorded in different arterial segments in 25 male normal healthy individuals, before, during and after Valsalva maneuver (VM). Heart rate (HR) and blood pressure (BP) showed significantly significant (P < 0.001) variation in phase II and IV of VM compared to baseline. PWV in aorta to femoral (AO-Fem) arterial segment revealed progressive increase from baseline to ...
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ژورنال
عنوان ژورنال: Circulation
سال: 1959
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.20.4.574