It's called a Muller maneuver and involves forced inspiration against a closed glottis.
The Valsalva maneuver is used with patients who have suspected heart abnormalities, often in conjunction with echocardiography.
because
Yes
vocal folds
when a doctor listens to the chest with a stethoscope during the Valsalva maneuver, characteristic heart sounds are heard. Variations in these sounds can indicate the type of abnormality present in the heart.
The Valsalva maneuver should not be performed by patients who have severe coronary artery disease, have experienced recent heart attack, or have a moderate to severe reduction in blood volume.
No, it collapses.
Yes, that is true.
Unrelated to any evaluation of the heart, the Valsalva maneuver also is taught to patients with multiple sclerosis who are unable to fully empty the bladder (flaccid bladder).
The Valsalva maneuver also corrects some rapid heartbeats originating in the atria. When the maneuver is done correctly, blood pressure rises. This forces the heart to respond by correcting its rhythm and beating more slowly.
valsalva maneuver
the Valsalva maneuver can cause blood clots to detach, bleeding, and abnormal rhythms originating in the ventricle. It can also cause cardiac arrest. Consequently, the procedure is usually performed in a setting where emergency equipment