Which statement does not accurately characterize intravenous nitroglycerin administration?

• A. Begin with a low infusion rate and titrate to effect
• B. Monitor the patient's vital signs every 2 hours while giving intravenous nitroglycerin
• C. Use a continuous IV infusion with a dedicated line
• D. Check blood pressure and heart rate every 5 minutes during initiation

Answer: (B)

IV nitroglycerin is a potent vasodilator that must be started at a low infusion rate and titrated to achieve the desired effect while closely watching the patient’s hemodynamics. It’s given as a continuous infusion through a dedicated line so dosing stays consistent and there’s no delay if a faster adjustment is needed. During initiation, frequent monitoring of blood pressure and heart rate is essential because the drug can cause rapid drops in BP or reflex tachycardia; many protocols call for checks every 5 minutes (and more often if unstable or if the patient is on high doses). Checking vital signs only every 2 hours would miss these rapid changes and is not appropriate during initiation. Once hemodynamics stabilize, monitoring intervals can be extended, but the initiation phase requires close, frequent assessment.