Valsalva, Antonio M.(redirected from Valsalva, Antonio M)
Valsalva, Antonio M.(val?sal'va)
Antonio Maria Valsalva, Italian anatomist, 1666–1723.
Macular bleeding due to a sudden increase in abdominal or chest pressure. It causes sudden central visual loss that often resolves spontaneously.
An attempt to forcibly exhale with the glottis, nose, and mouth closed. This maneuver causes increased intrathoracic pressure, slowing of the pulse, decreased return of blood to the heart, and increased venous pressure. If the eustachian tubes are not obstructed, the pressure on the tympanic membranes also will be increased. When this maneuver is done with just the glottis closed, only intrathoracic pressure will increase. This maneuver may be helpful in converting supraventricular tachycardias to normal sinus rhythm or in clearing ears that have become blocked during a descent from a high altitude.See: Müller maneuver; Toynbee maneuver
The three dilatations in the wall of the ascending aorta behind the three flaps of the aortic semilunar valve.
Valsalva,Antonio M., Italian anatomist, 1666-1723.
aneurysm of sinus of Valsalva - a congenital thin-walled tubular out-pouching usually in the right or noncoronary sinus with an entirely intracardiac course.
teniae of Valsalva - the three bands in which the longitudinal muscular fibers of the large intestine, except the rectum, are collected. Synonym(s): teniae coli
Valsalva antrum - a cavity in the petrous portion of the temporal bone. Synonym(s): mastoid antrum
Valsalva ligaments - the three ligaments that attach the auricle to the side of the head. Synonym(s): auricular ligaments
Valsalva maneuver - any forced expiratory effort against a closed airway.
Valsalva muscle - a band of vertical muscular fibers on the outer surface of the tragus of the ear. Synonym(s): tragicus muscle
Valsalva sinus - the space between the superior aspect of each cusp of the aortic valve and the dilated portion of the wall of the ascending aorta. Synonym(s): aortic sinus
Valsalva test - when the heart is monitored during the Valsalva maneuver, there is a characteristic complex sequence of cardiocirculatory events, departure from which indicates disease or malfunction.