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Fig. 2 | Annals of Intensive Care

Fig. 2

From: Hyperoxia in intensive care, emergency, and peri-operative medicine: Dr. Jekyll or Mr. Hyde? A 2015 update

Fig. 2

Original recordings of ECG and cerebral blood flow velocity (CBFV) in two volunteers undergoing an HBO exposure-test with pure O2 breathing at three atmospheres of ambient pressure. In the upper panel, HBO-induced seizures were preceded by tachycardia, agitation, and a subsequent marked increase in CBFV. The lower panel shows a volunteer, in whom seizures could be prevented by removing the O2 face mask; CBFV consecutively fell to lower levels comparable to those during the asymptomatic period

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