A 50-year-old male presents with irregular palpitations. What should be your immediate action?

When a patient presents with irregular palpitations, it indicates a possible underlying cardiac issue that requires immediate evaluation and intervention. Transporting the patient is the most appropriate immediate action because it allows for continuous monitoring and provides access to advanced medical care if necessary.

Irregular palpitations can be associated with various conditions, some of which may be life-threatening, such as atrial fibrillation, ventricular tachycardia, or other arrhythmias. By transporting the patient, emergency responders ensure that the individual receives prompt evaluation by medical personnel who can perform the necessary diagnostics, such as an ECG, and intervene appropriately.

While administering oxygen might be considered depending on the patient's oxygen saturation and overall condition, it does not address the possible urgent cardiac issues as effectively as transporting the patient. Assisting with nitroglycerin is generally reserved for patients with chest pain suspected to be of cardiac origin, and would not be appropriate without further evaluation of the patient's condition.

Therefore, transport prioritizes patient stability and access to necessary care, making it the correct choice in this scenario.