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Fig. 3 | Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine

Fig. 3

From: The pitfalls of bedside regional cerebral oxygen saturation in the early stage of post cardiac arrest

Fig. 3

High rSO2 and suppression-burst aEEG pattern in PCAS. A female in her 30s experienced cardiac arrest caused by severe bronchial asthma. Her initial cardiac rhythm indicated pulseless electrical activity. The time from cardiac arrest to ROSC was 45 min. The initial rSO2value was 85 % (Fig. 4a-a). The aEEG pattern indicated a suppression-burst pattern 3 h after ROSC. She received a dopamine infusion after a fall in blood pressure (Fig. 4a-b). Thereafter, her rSO2 gradually returned around 80–85 % and kept constant (Fig. 1a-c) for 24 h. The outcome for this patient was brain death. aEEG measurements were taken for only 3 h after ROSC (not for 24 h) in this patient. (a): rSO2 (%); (b): aEEG, 3 h after ROSC. Arrows: a: BP 155/94 mmHg, arterial gases: PaCO2 77.2 mmHg, pH 7.125; b: BP 90/48 mmHg, arterial gases: PaCO2 44.1 mmHg, pH 7.430; c: BP 124/54 mmHg, arterial gases: PaCO2 39.4 mmHg, pH 7.455. BP: blood pressure; ROSC: return of spontaneous circulation; rSO2: regional cerebral oxygen saturation; aEEG: amplitude-integrated electroencephalography

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