Only give Nitro if the heart rate is between which values?

Only give Nitro if the heart rate is between which values?

• A. 40 to 90
• B. 50 to 100
• C. 60 to 120
• D. 70 to 110

Answer: (B)

Nitroglycerin helps chest pain from ischemia by dilating veins, which reduces preload and myocardial oxygen demand. To use it safely, you want the heart rate in a range where the body can tolerate that preload reduction without compromising perfusion. The best range is 50 to 100 beats per minute. If the rate is below 50, nitro can push blood pressure down too far and worsen perfusion. If the rate is above 100, tachycardia suggests ongoing ischemia or instability, and adding nitro can still reduce preload but may not improve symptoms and can risk hypotension. Keeping the heart rate in this 50–100 range helps balance the benefits of relief from ischemia with the risk of hypotension or inadequate perfusion.

Nitroglycerin helps chest pain from ischemia by dilating veins, which reduces preload and myocardial oxygen demand. To use it safely, you want the heart rate in a range where the body can tolerate that preload reduction without compromising perfusion. The best range is 50 to 100 beats per minute. If the rate is below 50, nitro can push blood pressure down too far and worsen perfusion. If the rate is above 100, tachycardia suggests ongoing ischemia or instability, and adding nitro can still reduce preload but may not improve symptoms and can risk hypotension. Keeping the heart rate in this 50–100 range helps balance the benefits of relief from ischemia with the risk of hypotension or inadequate perfusion.