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Heart Disease (Expert Forum)
NTG Administration during SPECT Resting Myocardial Flow Test
Answered by
Cleveland - OH
This forum is for questions and support regarding heart issues such as: Angina, Angioplasty, Arrhythmia, Bypass Surgery, Cardiomyopathy, Coronary Artery Disease, Defibrillator, Heart Attack, Heart Disease, High Blood Pressure, Mitral Valve Prolapse, Pacemaker, PAD, Stenosis, Stress Tests.
NTG Administration during SPECT Resting Myocardial Flow Test
by Kamalamalama, May 03, 2005 12:00AM
During recent hospitalization for R/O Anterior Septal MI I was given SPECT Resting Myocardial Flow Test in Nurclear Medicine.
I had been on NTG paste 1 inch 30 hrs prior to and during SPECT evaluation. How would concomitant NTG administration during SPECT evaluation affect outcome? Thankyou, Kamalamalama
I had been on NTG paste 1 inch 30 hrs prior to and during SPECT evaluation. How would concomitant NTG administration during SPECT evaluation affect outcome? Thankyou, Kamalamalama
Doctor's Answer
by Cleveland Clinic, May 03, 2005 12:00AM
, May 03, 2005 12:00AM
Kamalamalama,
Nitroglycerine can dilate the coronary arteries. A stress test compares resting images of coronary blood flow to the images taken under stress conditions.
If your arteries are dilated at rest, then theoretically if the difference in perfusion may be slightly attenuated. If you are not on nitroglycerine as a standing medicine this could potentially interfere with the applicability of the test when you are off.
However, you body does become tolerant to nitoglycerine over several hours. This is people that routinely take nitroglycerine (via patches etc..) are told to take the patch off for several hours a day. If you were on the paste for 30 straight hours, it probably really had no effect on the images.
good luck
Nitroglycerine can dilate the coronary arteries. A stress test compares resting images of coronary blood flow to the images taken under stress conditions.
If your arteries are dilated at rest, then theoretically if the difference in perfusion may be slightly attenuated. If you are not on nitroglycerine as a standing medicine this could potentially interfere with the applicability of the test when you are off.
However, you body does become tolerant to nitoglycerine over several hours. This is people that routinely take nitroglycerine (via patches etc..) are told to take the patch off for several hours a day. If you were on the paste for 30 straight hours, it probably really had no effect on the images.
good luck
