GEORGE B. PROZAN; ALLEN LITWIN
Cardiovascular collapse has been associated with forced expiration against a closed glottis (Valsalva's maneuver) since ancient times. Galen, Valerius Maximus, and Appianus of Alexandria were all aware that convulsions and death could be caused by breath-holding.1 Scientific investigation of this phenomenon was not done until Eduard Weber noted in 1850 that fainting and obliteration of the peripheral pulse occurred during this maneuver. Subsequently it was discovered that Valsalva had previously described this phenomenon during the 18th century. During the late 19th and 20th centuries many articles were written on the deliberate application of this maneuver to test the competency of
PROZAN GB, LITWIN A. POST-MICTURITION SYNCOPE*. Ann Intern Med. 1961;54:82–89. doi: https://doi.org/10.7326/0003-4819-54-1-82
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Published: Ann Intern Med. 1961;54(1):82-89.
Nephrology, Neurology, Urological Disorders.
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