• Seven patients, while under various electroencephalographic levels of cyclopropane anesthesia, were studied in relation to hemodynamics. Measurements included cardiac index, pulse rate, stroke volume, peripheral resistance of the circulatory system, and central, arterial, and venous pressures. The various levels of anesthesia caused changes in most of the measurable factors, but all alterations returned to preanesthetic levels as the anesthetic was withdrawn.
Thompson MC, Patrick RT, Wood EH. EFFECTS OF CYCLOPROPANE ANESTHESIA ON THE CIRCULATION OF HUMAN BEINGS. JAMA. 1957;164(4):389–393. doi:10.1001/jama.1957.02980040029008
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