TY - JOUR
T1 - Quantitative pupillometry and transcranial Doppler measurements in patients treated with hypothermia after cardiac arrest
AU - Heimburger, Delphine
AU - Durand, Michel
AU - Gaide-Chevronnay, Lucie
AU - Dessertaine, Geraldine
AU - Moury, Pierre Henri
AU - Bouzat, Pierre
AU - Albaladejo, Pierre
AU - Payen, Jean Francois
N1 - Publisher Copyright:
© 2016 Elsevier Ireland Ltd.
PY - 2016/6/1
Y1 - 2016/6/1
N2 - Background: Predicting outcome after cardiac arrest (CA) is particularly difficult when therapeutic hypothermia (TH) is used. We investigated the performance of quantitative pupillometry and transcranial Doppler (TCD) in this context. Methods: This prospective observational study included 82 post-CA patients. Quantitative assessment of pupillary light reflex (PLR) and TCD measurements of the two middle cerebral arteries were performed at admission (day 1) and after 24 h (day 2) during TH (33-35 °C) and sedation. Neurological outcome was assessed at 3 months using cerebral performance category (CPC) scores; patients were classified as having good (CPC 1-2) or poor (CPC 3-5) outcome. Prognostic performance was analyzed using area under the receiver operating characteristic curve (AUC-ROC). Results: Patients with good outcome (n = 27) had higher PLR amplitude than patients with poor outcome (n = 55) both at day 1, 13% (10-18) (median, 25th-75th percentile) vs. 8% (2-11) (P < 0.001), and at day 2, 17% (13-20) vs. 8% (5-13) (P < 0.001), respectively. The AUC-ROC curves at days 1 and 2 were 0.76 (95% confidence interval [CI] 0.65-0.86) and 0.82 (95% CI 0.73-0.92), respectively. The best cut-off values of PLR amplitude to predict a 3-month poor outcome were <9% and <11%, respectively. A PLR amplitude of <7% at day 2 predicted a 3-month poor outcome with a specificity of 100% (95% CI 86-100) and a sensitivity of 42% (95% CI 28-58). No differences in TCD measurements were found between the two patient groups. Conclusion: PLR measurements might be informative in the prediction of outcome of post-CA patients even under sedation and hypothermia.
AB - Background: Predicting outcome after cardiac arrest (CA) is particularly difficult when therapeutic hypothermia (TH) is used. We investigated the performance of quantitative pupillometry and transcranial Doppler (TCD) in this context. Methods: This prospective observational study included 82 post-CA patients. Quantitative assessment of pupillary light reflex (PLR) and TCD measurements of the two middle cerebral arteries were performed at admission (day 1) and after 24 h (day 2) during TH (33-35 °C) and sedation. Neurological outcome was assessed at 3 months using cerebral performance category (CPC) scores; patients were classified as having good (CPC 1-2) or poor (CPC 3-5) outcome. Prognostic performance was analyzed using area under the receiver operating characteristic curve (AUC-ROC). Results: Patients with good outcome (n = 27) had higher PLR amplitude than patients with poor outcome (n = 55) both at day 1, 13% (10-18) (median, 25th-75th percentile) vs. 8% (2-11) (P < 0.001), and at day 2, 17% (13-20) vs. 8% (5-13) (P < 0.001), respectively. The AUC-ROC curves at days 1 and 2 were 0.76 (95% confidence interval [CI] 0.65-0.86) and 0.82 (95% CI 0.73-0.92), respectively. The best cut-off values of PLR amplitude to predict a 3-month poor outcome were <9% and <11%, respectively. A PLR amplitude of <7% at day 2 predicted a 3-month poor outcome with a specificity of 100% (95% CI 86-100) and a sensitivity of 42% (95% CI 28-58). No differences in TCD measurements were found between the two patient groups. Conclusion: PLR measurements might be informative in the prediction of outcome of post-CA patients even under sedation and hypothermia.
KW - Heart arrest
KW - Hypothermia
KW - Induced
KW - Patient outcome assessment
KW - Pupillary
KW - Reflex
KW - Transcranial Doppler sonography
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U2 - 10.1016/j.resuscitation.2016.02.026
DO - 10.1016/j.resuscitation.2016.02.026
M3 - Article
C2 - 26970030
AN - SCOPUS:84961221367
SN - 0300-9572
VL - 103
SP - 88
EP - 93
JO - Resuscitation
JF - Resuscitation
ER -