An international study that identified a dramatic increase in out-of-hospital cardiac arrests (OHCAs) preceding and paralleling the COVID-19 pandemic suggests that OHCA is yet another example of the virus's myriad multisystemic effects and a signal of upcoming community surges.In the observational study, published today in the Lancet's EClinicalMedicine, emergency services medical directors in 50 large cities in the United States, Italy, the United Kingdom, France, Australia, and New Zealand reported tallies of monthly OCHAs among adults in their respective jurisdictions from January to June 2020 and compared them with numbers from the same periods in 2018 and 2019.They authors of the study found that, among all 50 cities, OHCA cases rose,