Which sign might indicate impending cardiac arrest?

Gasping-type respirations, often referred to as agonal breaths, can indicate impending cardiac arrest. These abnormal breathing patterns are typically irregular and may sound like gasps rather than effective breaths. They can be a sign that the brain is not receiving enough oxygen due to inadequate blood circulation, often following a cardiac event. This occurs when normal respiratory function deteriorates, suggesting that the body is struggling to maintain proper oxygenation and may be on the verge of respiratory failure or cardiac arrest. In such scenarios, immediate medical intervention is crucial, as this could escalate to complete cardiac arrest if not addressed quickly.

The other signs, such as regular breathing patterns, excessive coughing, or Cheyne-Stokes respirations, do not typically indicate an immediate risk of cardiac arrest. Regular breathing is a sign of stable respiratory function, excessive coughing often suggests a respiratory issue but not necessarily cardiac arrest, and Cheyne-Stokes respirations are a cyclical pattern seen in certain medical conditions, but they do not directly signify imminent cardiac failure in the same way as gasping respirations do.