STATEWIDE OUT-OF-HOSPITAL CARDIAC ARREST DURING THE BEGINNING OF THE COVID-19 PANDEMIC
Objective: To compare statewide OOHCA during the first three months of the COVID-19 pandemic to the same period in 2019. Methods: Data for non-traumatic OOHCA from Michigan were obtained and analyzed from the statewide EMS information system from 3/1 to 5/31/2020 (pandemic) and compared to the same period in 2019 (control). OOHCAs were identified using a validated data filter applied to 911 scene calls. Comparisons in common OOHCA characteristics were performed using descriptive statistics. Survival data were not available.
Results: There were 4,665 OOHCAs in the pandemic period compared to 3,261 in the control period. Bystander witnessed OOHCA occurred in 1,586 during the pandemic versus 1,076 in control (34.0% versus 33.0%, p=0.353). OOHCA involving black patients occurred more frequently (26.6% versus 18.6%, p<.00001). Shockable OOHCA was less common (8.6% versus 10.8%, p=0.0015). There was no difference in the rate of bystander CPR (38.0% versus 37.9%, p=0.991) or AED use (10.0% vs. 10.0%), p=0.991). The rate of endotracheal intubation (ETI) was lower (12.1% versus 30.4%, p<.00001) as was the return of spontaneous circulation (ROSC) (4.9% versus 8.1%, p<.00001). Termination of resuscitation occurred more often (58.7% versus 46.9%, p<.00001).
Conclusion: OOHCA in Michigan increased during the first three months of the COVID-19 pandemic compared to the same period in 2019. OOHCA involving the black race occurred more frequently. Rates of bystander witnessed OOHCA, AED use, and CPR did not change. EMS TOR increased, while ETI and ROSC decreased.