284: IMPACT OF HEAD/TORSO-UP CHEST COMPRESSIONS AND FLOW-ORIENTED CPR ADJUNCTS ON SURVIVAL

Crit Care Med 2016 • Volume 44 • Number 12 (Suppl.) propensity-matched analysis to assess the association between timing of bystander CPR and outcome. Results: Among the 80750 patients, bystander CPR was performed before EMS call in 35595 patients (44.1%) and performed after EMS call in 45155 patients (55.9%). 30-day intact survival rate was 8.4% when bystander CPR was performed before EMS call versus 5.7% when bystander CPR was performed after EMS call (p<0.001). Phone first approach was associated with decreased intact survival (adjusted odds ratio, 0.80; 95%CI, 0.75-0.87). In 1:1 propensity-matched analysis, phone first approach was associated with decreased intact survival (adjusted odds ratio, 0.80; 95%CI, 0.73-0.87). In several sensitivity analyses including age (pediatric or adult) and initial cardiac rhythm (shockable or non-shockable), negative associations still persisted, however, there was heterogeneity with respect to whether public access defibrillation was performed; phone first approach was not associated with outcome among patients who received shocks by bystander. Conclusions: Among OHCA patients with bystander-initiated CPR, phone first approach was associated with decreased intact survival.