What triggers secondary cardiac arrest?

Secondary cardiac arrest is commonly triggered by insufficient oxygen supply to the heart, which can occur when the body experiences a disruption in blood flow, such as from respiratory failure or severe hypoxia. When the heart does not receive enough oxygen, it can lead to potential arrhythmias or a complete stop in cardiac activity, resulting in cardiac arrest. This process highlights the importance of maintaining proper oxygen delivery to vital organs, particularly in emergency situations where respiratory issues may be present.

While sudden emotional shock, physical trauma to the heart, and high blood pressure can all have effects on heart function, they are not direct causes of secondary cardiac arrest as it relates to the lack of oxygen. The focus on oxygen deprivation underscores the need for lifeguards and healthcare providers to be vigilant about airway management and respiratory support in preventing secondary cardiac issues during emergencies.