What are the common signs of cardiac arrest?

The common signs of cardiac arrest primarily include unresponsiveness, lack of normal breathing, and absence of pulse. When an individual is experiencing cardiac arrest, their heart stops beating effectively, which leads to a rapid loss of consciousness and unresponsiveness.

Additionally, the stoppage of blood circulation means that there is typically no pulse detectable. Normal breathing is obviously lost during cardiac arrest as the heart can no longer supply blood to the lungs for oxygenation, resulting in the inability to breathe normally. This triad of symptoms is critical to recognize, as it indicates the immediate need for advanced life support measures, such as CPR and defibrillation, to restore the heart's function and improve the person's chances of survival.

Other options include symptoms that may suggest different medical emergencies or conditions, such as increased heart rate and sweating, which are often associated with other health issues rather than cardiac arrest. Similarly, normal breathing, confusion, and drowsiness might point towards other health concerns and do not align with the acute presentation of cardiac arrest. Understanding these signs is essential for prompt recognition and response in emergency situations.