Basic

I. Initial Assessment

Administer highest concentration of oxygen as tolerated.

Find out what patient's prescribed dosage is and how many doses has been taken prior to your arrival, by what route it was taken, and what effect it has had.
Assess vital signs to ensure that systolic blood pressure is greater than 100 mm Hg.
Make sure the nitroglycerin is prescribed for this patient, the correct dosage, the right route of administration and expiration date.
Contact Medical Control for orders for assistance with administration of prescribed nitroglycerin up to three (3) doses (one dose 3-5 minutes) if patient has no relief and systolic blood pressure remains above 100 mm Hg. Patient should be in a seated position when administering nitroglycerin.

Continue monitoring of vital signs and patient's condition.