Final answer:
The most appropriate pharmacological intervention for the patient's chest pain is Nitroglycerine sublingual.
Step-by-step explanation:
The most appropriate pharmacological intervention for the given case would be Nitroglycerine sublingual, to help relieve the patient's chest pain. Nitroglycerine is a medication commonly used to treat angina (chest pain) caused by reduced blood supply to the heart muscle. It works by dilating the blood vessels, increasing blood flow to the heart, and reducing the workload of the heart.