What should be the immediate intervention for a pregnant patient found to be in cardiac arrest?

In the scenario of a pregnant patient experiencing cardiac arrest, performing left uterine displacement is critical. This maneuver is designed to alleviate pressure from the uterus on the inferior vena cava (IVC), which can occur when the patient is in a supine position. When the IVC is compressed, it can reduce venous return to the heart, diminishing cardiac output and compromising perfusion, especially during resuscitation efforts. By displacing the uterus to the left, you enhance venous return, improve blood flow to the heart, and increase the effectiveness of chest compressions.

This intervention is especially important after the 20th week of gestation when the uterus is large enough to exert significant pressure on the major blood vessels. It is a standard practice in advanced life support for pregnant individuals to ensure that resuscitation efforts are as effective as possible.

Other interventions might be necessary during resuscitation, but the combination of chest compressions and left-sided uterine displacement is paramount to optimize blood flow during this critical time.