North Carolina EMT State Practice Exam

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What is a contraindication for administering Nitro to a patient?

  1. Systolic blood pressure below 80

  2. History of heart failure

  3. Age over 60

  4. Systolic blood pressure below 100

The correct answer is: Systolic blood pressure below 100

Administering nitroglycerin must be approached cautiously, especially concerning the patient's blood pressure. A contraindication for administering nitroglycerin involves the patient's systolic blood pressure being below 100. This is critical because nitroglycerin acts as a vasodilator, which lowers blood pressure by dilating blood vessels. In a patient with a systolic blood pressure lower than 100, administering nitroglycerin can lead to further hypotension, potentially causing adverse effects such as dizziness, syncope, or shock. Blood pressure measurements are an essential part of assessing a patient before giving medications like nitroglycerin, especially in emergency situations where maintaining adequate perfusion is crucial.

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