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Cerebral oximetry during cardiac arrest : a multicenter study of neurologic outcomes and survival

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Parnia, Sam, Yang, Jie, Nguyen, Robert, Ahn, Anna, Zhu, Jiawen, Inigo-Santiago, Loren, Nasir, Asad, Golder, Kim, Ravishankar, Shreyas, Bartlett, Pauline et al.
(2016) Cerebral oximetry during cardiac arrest : a multicenter study of neurologic outcomes and survival. Critical Care Medicine, 44 (9). pp. 1663-1674. doi:10.1097/CCM.0000000000001723 ISSN 0090-3493.

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Official URL: http://dx.doi.org/10.1097/CCM.0000000000001723

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Abstract

OBJECTIVES
Cardiac arrest is associated with morbidity and mortality because of cerebral ischemia. Therefore, we tested the hypothesis that higher regional cerebral oxygenation during resuscitation is associated with improved return of spontaneous circulation, survival, and neurologic outcomes at hospital discharge. We further examined the validity of regional cerebral oxygenation as a test to predict these outcomes.

DESIGN
Multicenter prospective study of in-hospital cardiac arrest.

SETTING
Five medical centers in the United States and the United Kingdom.

PATIENTS
Inclusion criteria are as follows: in-hospital cardiac arrest, age 18 years old or older, and prolonged cardiopulmonary resuscitation greater than or equal to 5 minutes. Patients were recruited consecutively during working hours between August 2011 and September 2014. Survival with a favorable neurologic outcome was defined as a cerebral performance category 1-2.

INTERVENTIONS
Cerebral oximetry monitoring.

MEASUREMENTS AND MAIN RESULTS
Among 504 in-hospital cardiac arrest events, 183 (36%) met inclusion criteria. Overall, 62 of 183 (33.9%) achieved return of spontaneous circulation, whereas 13 of 183 (7.1%) achieved cerebral performance category 1-2 at discharge. Higher mean ± SD regional cerebral oxygenation was associated with return of spontaneous circulation versus no return of spontaneous circulation (51.8% ± 11.2% vs 40.9% ± 12.3%) and cerebral performance category 1-2 versus cerebral performance category 3-5 (56.1% ± 10.0% vs 43.8% ± 12.8%) (both p < 0.001). Mean regional cerebral oxygenation during the last 5 minutes of cardiopulmonary resuscitation best predicted the return of spontaneous circulation (area under the curve, 0.76; 95% CI, 0.69-0.83); regional cerebral oxygenation greater than or equal to 25% provided 100% sensitivity (95% CI, 94-100) and 100% negative predictive value (95% CI, 79-100); regional cerebral oxygenation greater than or equal to 65% provided 99% specificity (95% CI, 95-100) and 93% positive predictive value (95% CI, 66-100) for return of spontaneous circulation. Time with regional cerebral oxygenation greater than 50% during cardiopulmonary resuscitation best predicted cerebral performance category 1-2 (area under the curve, 0.79; 95% CI, 0.70-0.88). Specifically, greater than or equal to 60% cardiopulmonary resuscitation time with regional cerebral oxygenation greater than 50% provided 77% sensitivity (95% CI,:46-95), 72% specificity (95% CI, 65-79), and 98% negative predictive value (95% CI, 93-100) for cerebral performance category 1-2.

CONCLUSIONS
Cerebral oximetry allows real-time, noninvasive cerebral oxygenation monitoring during cardiopulmonary resuscitation. Higher cerebral oxygenation during cardiopulmonary resuscitation is associated with return of spontaneous circulation and neurologically favorable survival to hospital discharge. Achieving higher regional cerebral oxygenation during resuscitation may optimize the chances of cardiac arrest favorable outcomes.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Clinical Trials Unit
Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School
Journal or Publication Title: Critical Care Medicine
Publisher: Lippincott Williams & Wilkins
ISSN: 0090-3493
Official Date: 1 September 2016
Dates:
DateEvent
1 September 2016Published
1 September 2016Accepted
Volume: 44
Number: 9
Page Range: pp. 1663-1674
DOI: 10.1097/CCM.0000000000001723
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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