Neurologic outcomes in pediatric cardiac arrest survivors enrolled in the THAPCA trials
2018
Objective To implement a standardized approach to characterize neurologic outcomes among 12-month survivors in the Therapeutic Hypothermia after Pediatric Cardiac Arrest (THAPCA) trials. Methods Two multicenter trials enrolled children age 48 hours to 18 years who remained comatose after cardiac arrest (CA) occurring out-of-hospital (THAPCA-OH, NCT00878644) or in-hospital (THAPCA-IH, NCT00880087); patients were randomized to therapeutic hypothermia or therapeutic normothermia. The primary outcome, survival with favorable 12-month neurobehavioral outcome (Vineland Adaptive Behavior Scales [VABS-II]), did not differ between treatment groups in either trial. Neurologists examined 181 12-month survivors, described findings using the novel semi-quantitative Pediatric Resuscitation after Cardiac Arrest (PRCA) form, and rated findings in 6 domains; scores ranged from 0 (no deficits) to 21 (maximal deficits). PRCA scores were compared with 12-month VABS-II scores and cognitive scores. Results Neurologic outcome PRCA scores were classified as no/minimal impairment, PRCA 0–3, 81/179 (45%); mild impairment, PRCA 4–7, 24/179 (13%); moderate impairment, PRCA 8–11, 15/179 (8%); severe impairment, PRCA 12–16, 20/179 (11%); profound impairment, PRCA 17–21, 39/179 (21%) (2/181 incomplete). VABS-II scores correlated strongly with PRCA category ( r = −0.88, p r = −0.72, p Conclusion The PRCA provides a robust method for depicting neurologic outcomes after acute encephalopathy caused by CA in children. It provides a global semiquantitative rating of neurologic impairment and domain-specific impairment. The strong correlation with well-established neurobehavioral outcome measures supports its validity over a broad age range and wide spectrum of outcomes.
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