What symptom is typically associated with cardiac arrest?

Loss of consciousness is typically associated with cardiac arrest as it is a critical event where the heart fails to pump blood effectively, leading to insufficient blood flow to the brain. This lack of blood flow results in a rapid decline in consciousness and responsiveness. In cardiac arrest, other symptoms may accompany the event, such as unresponsiveness or abnormal breathing, but the primary and most immediate symptom is indeed the loss of consciousness.

In contrast, the other options do not typically correlate with cardiac arrest. Consistent coughing can suggest respiratory issues or infections, sudden weight gain might indicate fluid retention and other medical conditions, and increased urination is often associated with conditions such as diabetes or kidney issues. These symptoms do not effectively characterize the acute and life-threatening nature of cardiac arrest, which is marked primarily by the patient's immediate loss of consciousness.