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THE ARTERIAL, VENOUS PRESSURES AND THE ELECTROENCEPHALOGRAM DURING OPEN HEART SURGERY

1972; Wiley; Volume: 48; Issue: 2 Linguagem: Inglês

10.1111/j.1600-0404.1972.tb07537.x

1600-0404

Ish Juneja, Robert E. Flynn, Robert L. Berger,

Anesthesia and Neurotoxicity Research

Two hundred and fifty-seven recordings of arterial pressure and one hundred and ninety-one recordings of the venous pressure were correlated with incidental, quantitative electroencephalographic findings during open heart surgery in thirty-four patients. A fall in mean arterial pressure to 50 mm of mercury and below was invariably associated with electroencephalographic slowing. This was defined as the "critical" pressure below which the cerebral blood flow falls. EEG is a very sensitive index of impaired cerebral blood flow during open heart surgery.