Effect of neuromonitor-guided titrated care on brain tissue hypoxia after opioid overdose cardiac arrest

RESUSCITATION

卷:129

Article

Elmer, Jonathan^1,2  Flickinger, Katharyn L.¹  Anderson, Maighdlin W.³  Koller, Allison C.¹  Sundermann, Matthew L.¹  Dezfulian, Cameron²  Okonkwo, David O.⁴  Shutter, Lori A.^2,4,5  Salcido, David D.¹  Callaway, Clifton W.¹  Menegazzi, James J.¹ 

[1] Univ Pittsburgh, Sch Med, Dept Emergency Med, Pittsburgh, PA USA

[2] Univ Pittsburgh, Sch Med, Dept Crit Care Med, Pittsburgh, PA USA

[3] Univ Pittsburgh, Sch Med, Dept Med, Div Infect Dis, Pittsburgh, PA 15213 USA

[4] Univ Pittsburgh, Sch Med, Dept Neurol Surg, Pittsburgh, PA 15261 USA

[5] Univ Pittsburgh, Sch Med, Dept Neurol, Pittsburgh, PA 15261 USA

关键词: Cardiac arrest;    Resuscitation;    Critical care;    Neuromonitoring;    Precision medicine;   

DOI  :  10.1016/j.resuscitation.2018.04.013

来源: Elsevier

【 摘 要 】

Introduction: Brain tissue hypoxia may contribute to preventable secondary brain injury after cardiac arrest. We developed a porcine model of opioid overdose cardiac arrest and post-arrest care including invasive, multimodal neurological monitoring of regional brain physiology. We hypothesized brain tissue hypoxia is common with usual post-arrest care and can be prevented by modifying mean arterial pressure (MAP) and arterial oxygen concentration (PaO2). Methods: We induced opioid overdose and cardiac arrest in sixteen swine, attempted resuscitation after 9 min of apnea, and randomized resuscitated animals to three alternating 6-h blocks of standard or titrated care. We invasively monitored physiological parameters including brain tissue oxygen (PbtO(2)). During standard care blocks, we maintained MAP > 65 mmHg and oxygen saturation 94-98%. During titrated care, we targeted PbtO2 > 20 mmHg. Results: Overall, 10 animals (63%) achieved ROSC after a median of 12.4 min (range 10.8-21.5 min). PbtO(2) was higher during titrated care than standard care blocks (unadjusted beta= 0.60, 95% confidence interval (CI) 0.42-0.78, P < 0.001). In an adjusted model controlling for MAP, vasopressors, sedation, and block sequence, PbtO(2) remained higher during titrated care (adjusted beta= 0.75, 95% CI 0.43-1.06, P < 0.001). At three predetermined thresholds, brain tissue hypoxia was significantly less common during titrated care blocks (44 vs 2% of the block duration spent below 20 mmHg, P < 0.001; 21 vs 0% below 15 mmHg, P < 0.001; and, 7 vs 0% below 10 mmHg, P = .01). Conclusions: In this model of opioid overdose cardiac arrest, brain tissue hypoxia is common and treatable. Further work will elucidate best strategies and impact of titrated care on functional outcomes.

【 授权许可】

Free