What is the correct course of action if a patient is unresponsive?

In a situation where a patient is unresponsive, the appropriate action is to first check their responsiveness and call for help immediately. This is crucial because an unresponsive state may indicate a medical emergency that requires urgent intervention. Checking responsiveness involves assessing whether the patient reacts to stimuli, which helps determine the level of consciousness and potential need for resuscitation measures.

Calling for help promptly is vital to ensure that medical professionals arrive quickly to provide the necessary care. This action can save the patient's life, as immediate intervention may be required to address issues like airway obstruction, lack of breathing, or cardiac arrest.

The other options do not prioritize the immediate safety and care of the patient. Leaving the patient alone or notifying family members first can delay critical care. Conducting a physical examination without ensuring the patient’s safety and calling for help may also risk missing vital signs of a serious condition that needs immediate medical attention. Therefore, checking responsiveness and calling for help represents the best practice in responding to an unresponsive patient.