Which protocol should be followed when a patient expresses suicidal thoughts or intentions?

When dealing with a patient who expresses suicidal thoughts or intentions, Protocol 25, which addresses Psychiatric/Abnormal Behavior/Suicide Attempt, is the most appropriate choice. This protocol is specifically designed to guide emergency medical dispatchers through the complexities of assessing and managing potential suicide attempts or suicidal ideation. It focuses on obtaining critical information about the patient's mental state, their level of intent, any plans they may have made, and other relevant factors that can help in determining the urgency of the response needed.

Using this protocol ensures that the dispatcher can ask the right questions, assess the risk level effectively, and provide essential information to first responders. By utilizing Protocol 25, dispatchers can ensure that the patient receives the appropriate mental health support while also ensuring their physical safety during an emergency situation. The protocol is specifically structured to handle the nuances of this sensitive and potentially life-threatening scenario, making it the best choice when a patient indicates thoughts or intentions of self-harm.