A 57-Year-Old Diver Has Been Brought to the Surface by Fellow

A 57-year-old diver has been brought to the surface by fellow divers. He is complaining of difficulty breathing, dizziness, and severe chest pain. He states that he has a cardiac history and takes nitroglycerin, which is in his belongings nearby. Emergency Medical Responders report the following vital signs: pulse 128, respirations 18, blood pressure 88/56 mmHg, and SpO₂ at 96%. After applying oxygen to the patient, your next action should be to:

A) perform a secondary assessment.
B) assist the patient in taking his nitroglycerin.
C) administer a bronchodilator through a metered-dose inhaler.
D) transport the patient in a head-down position (Trendelenburg) .