Raised mortality from cardiac arrest in people with COVID-19 The survey now published in the European Heart Journal is a register-based observation study. It covers all 3,026 cases of sudden cardiac arrest that were reported to the Swedish Registry for Cardiopulmonary Resuscitation in the period from 1 January to 20 July 2020 -- that is, both before and during the pandemic. The Registry's statistics show that, in Sweden, there are 6,000 cases of sudden cardiac arrest annually in which the person is not admitted to hospital. Some 600 of these people survive. The corresponding figures for cardiac arrest during inpatient care are 2,500 cases and 900 survivors. The study results indicate that mortality from sudden cardiac arrest is higher if the person has COVID-19, but that different patient groups show divergent differences in mortality rates.