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Spontaneous vs nitroglycerin-induced vasovagal reflex on head-up tilt: Are there neuroendocrine differences?
Heart Rhythm
August 2016
Department of Clinical Sciences, Lund University, Hypertension and Cardiovascular Disease Group, Clinical Research Centre, Skåne University Hospital, Malmö, Sweden,; Department of Cardiology, Skåne University Hospital, Malmö, Sweden. Electronic address:
Background: Head-up tilt test (HUT) has been used for nearly 30 years for diagnosing vasovagal syncope (VVS) and was enhanced by sublingual nitroglycerin (glyceryl trinitrate [GTN]) challenge in the 1990s.
Objective: The purpose of this study was to explore neuroendocrine differences between spontaneous and drug-induced HUT positivity.
Methods: Two hundred eighty-eight patients (41.
Nitroglycerin-Induced Asystole: A Common Therapy with a Rare Adverse Effect.
Am J Med
October 2016
Department of Internal Medicine, Wright-Patterson Medical Center, Dayton, Ohio.
Effect of cardioplegic arrest and reperfusion on coronary reserve and autoregulation.
Ann Thorac Surg
September 1996
First Department of Surgery, Yamaguchi University School of Medicine, Japan.
Background: The effects of cardioplegic arrest and reperfusion on the coronary vasculature remain to be characterized. This study was designed to investigate changes in coronary reserve and autoregulation after hypothermic cardioplegic arrest and reperfusion.
Methods: Isolated rabbit hearts were perfused in a retrograde manner with Krebs-Henseleit bicarbonate buffer solution at a pressure of 80 cm H2O.
Nitroglycerin-induced hypotension, bradycardia, and asystole: report of a case and review of the literature.
Clin Cardiol
October 1990
Department of Medicine, University of Florida College of Medicine, Gainesville.
A 36-year-old man presented with a prolonged history of chest pain, and was given two sublingual nitroglycerin tablets. Subsequently, the patient became hypotensive, bradycardiac, apneic, and lost consciousness. The bradycardia resolved spontaneously.
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