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The hemodynamic and anti-ischemic effects of nitroglycerin (NTG) are rapidly blunted due to the development of nitrate tolerance. With initiation of nitroglycerin therapy one can detect neurohormonal activation and signs for intravascular volume expansion. These so called pseudotolerance mechanisms may compromise nitroglycerin's vasodilatory effects. Long-term treatment with nitroglycerin is also...
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