Case: A 49-year-old man calls 911 complaining of chest pain and then collapses while on the phone. EMS is dispatched to his high-rise apartment building where he lives on the 15th floor. The paramedics arrive and buzz his apartment but get no response. They try the superintendent’s number, but it goes to voicemail. The paramedics start buzzing apartments until someone lets them into the building. The elevator finally arrives but will not fit all their equipment, so they have to wait for a second one. They get to the apartment and knock, but there’s no answer. One of the paramedics goes back to the lobby to try the superintendent again, who answers. They proceed back to the 15th floor, gain access to the apartment, and find the man VSA (vital signs absent).
Clinical Question: Is there an association between survival of out-of-hospital cardiac arrest (OHCA) and the floor of patient contact?