Search results
Results From The WOW.Com Content Network
The Valsalva maneuver may help check for a dural tear following certain spinal operations, such as a microdiscectomy. An increase in intra-spinal pressure will cause cerebral spinal fluid (CSF) to leak out of the dura, causing a headache. [citation needed] The Valsalva maneuver has been associated with transient global amnesia. [17] [18] [19 ...
CSF pressure has been shown to be influenced by abrupt changes in intrathoracic pressure during coughing (which is induced by contraction of the diaphragm and abdominal wall muscles, the latter of which also increases intra-abdominal pressure), the valsalva maneuver, and communication with the vasculature (venous and arterial systems).
A vagal maneuver is an action used to stimulate the parasympathetic nervous system by activating the vagus nerve. The vagus nerve is the longest nerve of the autonomic nervous system and helps regulate many critical aspects of human physiology, including heart rate, blood pressure, sweating, and digestion through the release of acetylcholine .
The handgrip maneuver also diminishes the duration of the murmur and delays the timing of the mid-systolic click. [ 11 ] Both Valsalva maneuver and standing decrease venous return to the heart thereby decreasing left ventricular diastolic filling ( preload ) and causing more laxity on the chordae tendineae .
Valsalva maneuver. Valsalva maneuver has utility in detecting hypertrophic obstructive cardiomyopathy . According to one study, it has a sensitivity of 65% and specificity of 96% in HOCM. [11] Valsalva maneuver, as well as standing, decrease venous return to the heart. As a result, this decreases left ventricular filling.
MOSCOW (Reuters) -President Vladimir Putin warned the West on Wednesday that Russia could use nuclear weapons if it was struck with conventional missiles, and that Moscow would consider any ...
If the prolapse becomes severe enough, mitral regurgitation may occur. Any maneuver that decreases left ventricular volume — such as standing, sitting, Valsalva maneuver, and amyl nitrate inhalation — can produce earlier onset of clicks, longer murmur duration, and decreased murmur intensity. Any maneuver that increases left ventricular ...
Warning: This story contains sensitive content The death of an American woman in an assisted suicide capsule has led to criminal proceedings being launched against several people in Switzerland.