Many medical textbooks claim that a response by patients with chest pain to sublingual nitroglycerin can help diagnose myocardial ischemia. But many of the up to 90% of patients with chest pain in the emergency department (ED) who respond to nitroglycerin do not have underlying cardiac pathology, according to a new study.
Dr. Eric A. Shry from the Brooke Army Medical Center, San Antonio, Texas, and colleagues compared responses to nitroglycerin in 223 patients with ongoing chest pain with their diagnosed chest pain etiology.
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