Cognitive limitations in depth estimation for dispatcher-assisted cardiopulmonary resuscitation: a prospective simulation study.

ABSTRACT:

Background

Dispatcher-assisted cardiopulmonary resuscitation (DACPR) protocols often instruct bystanders to perform chest compressions to a target depth of 50-60 mm. However, whether laypersons can accurately perceive and achieve these depth targets remains unclear. This study evaluated laypersons' ability to estimate 50 mm in horizontal length, vertical depth, and chest compression depth.

Methods

We conducted a prospective simulation study enrolling adult laypersons without cardiopulmonary resuscitation (CPR) training within two years. Participants were asked to draw a 50 mm line, press a vertical measurement plate to an estimated depth of 50 mm, and perform chest compressions to 50 mm. Tasks were repeated after provision of a 50 mm visual reference. Accuracy was assessed b

SUBMITTER: Kim MW 

PROVIDER: S-EPMC12492283 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature