Characteristics of regional cerebral oxygen saturation levels in patients with out-of-hospital cardiac arrest with or without return of spontaneous circulation: A prospective observational multicentre study

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• 作者：Kei Nishiyama^a ; ^u ; ^{keinishi@kuhp.kyoto-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Noritoshi Ito^b ; ^u ; Tomohiko Orita^c ; ^u ; Kei Hayashida^d ; ^u ; Hideki Arimoto^e ; ^u ; Mitsuru Abe^f ; ^u ; Takashi Unoki^f ; ^u ; Tomoyuki Endo^g ; ^u ; Akira Murai^h ; ^u ; Ken Ishikuraⁱ ; ^u ; Noriaki Yamada^j ; ^u ; Masahiro Mizobuchi^k ; ^u ; Hideaki Anan^l ; ^u ; Tomorou Watanabe^m ; ^u ; Hideto Yasudaⁿ ; ^u ; Yosuke Homma^o ; ^u ; Kazuhiro Shiga^p ; ^u ; Michiaki Tokura^q ; ^u ; Yuka Tsujimura^r ; ^u ; Tetsuo Hatanaka^s ; ^u ; Ken Nagao^t ; ^u
• 关键词：CPC ; cerebral performance categories ; CPR ; cardiopulmonary resuscitation ; EMS ; emergency medical services ; J-POP ; Japan &ndash ; Prediction of Neurological Outcomes in Patients Post-cardiac Arrest Registry ; OHCA ; out-of-hospital cardiac arrests ; PCAI ; post-cardiac arrest intervention ; ROSC ; return of spontaneous circulation ; rSO2 ; regional cerebral oxygen saturation
• 刊名：Resuscitation
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：96
• 期：Complete
• 页码：16-22
• 全文大小：850 K

文摘

Our study aimed at filling the fundamental knowledge gap on the characteristics of regional brain oxygen saturation (rSO₂) levels in out-of-hospital cardiac arrest (OHCA) patients with or without return of spontaneous circulation (ROSC) upon arrival at the hospital for estimating the quality of cardiopulmonary resuscitation and neurological prognostication in these patients.

Methods

We enrolled 1921 OHCA patients from the Japan – Prediction of Neurological Outcomes in Patients Post-cardiac Arrest Registry and measured their rSO₂ immediately upon arrival at the hospital by near-infrared spectroscopy using two independent forehead probes (right and left). We also assessed the percentage of patients with a good neurological outcome (defined as cerebral performance categories 1 or 2) 90 days post cardiac arrest.

Results

After 90 days, 79 (4%) patients had good neurological outcomes and a median lower rSO₂ level of 15% (15–20%). Compared to patients without ROSC upon arrival at the hospital, those with ROSC had significantly higher rSO₂ levels (56% [39–65%] vs. 15% [15–17%], respectively; P < 0.01), and significantly correlated right- and left-sided regional brain oxygen saturation levels (R = 0.94 vs. 0.66, respectively). In both groups, the percentage of patients with a good 90-day neurological outcome increased significantly in proportion to their rSO₂ levels upon arrival at the hospital (P < 0.01).

Conclusion

Our data indicate that measuring rSO₂ levels might be effective for both monitoring the quality of resuscitation and neurological prognostication in patients with OHCA.