Out-of-hospital cardiac arrest treated by emergency medical service teams during COVID-19 pandemic: A retrospective cohort study
, 1, 45, 36, 7, 8, 13
Abstract
Background: Out-of-hospital cardiac arrest (OHCA) is a challenge for medical personnel, especially
in the current COVID-19 pandemic, where medical personnel should perform resuscitation wearing full
personal protective equipment. This study aims were to assess the characteristics and outcomes of adults
who suffered an OHCA in the COVID-19 pandemic treated by emergency medical service (EMS) teams.
Methods: All EMS-attended OHCA adults over than 18 years in the Polish EMS registry were analyzed.
The retrospective EMS database was conducted. EMS interventions performed between March 1,
and April 30, 2020 were retrospectively screened.
Results: In the study period EMS operated 527 times for OHCA cases. The average age of patients
with OHCA was 67.8 years. Statistically significantly more frequently men were involved (64.3%).
298 (56.6%) of all OHCA patients had resuscitation attempted by EMS providers. Among resuscitated
patients, 73.8% were cardiac etiology. 9.4% of patients had return of spontaneous circulation, 27.2% of
patients were admitted to hospital with ongoing chest compression. In the case of 63.4% cardiopulmonary
resuscitation was ineffective and death was determined.
Conclusions: The present study found that OHCA incidence rate in the Masovian population (central
region of Poland) in March–April 2020 period was 12.2/100,000 adult inhabitants. Return of spontaneous
circulation in EMS was observed only in 9.4% of resuscitated patients. The presence of shockable
rhythms was associated with better prognosis. The prehospital mortality, even though it was high, did
not differ from those reported by other studies.
Keywords: out-of-hospital cardiac arrestcardiopulmonary resuscitationreturn of spontaneous circulationoutcomeCOVID-19
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