Profound bradycardia after amyl nitrite in patients with a tendency to vasovagal episodes.
Authors:
- M H RosoffMRM H Rosoff
- M V CohenMCM V Cohen
Abstract
Two patients with mild aortic insufficiency inhaled amyl nitrite during routine echocardiographic examinations. One developed sinus arrest and syncope and the other had pronounced sinus bradycardia. The mechanism of this paradoxical response is unclear. Caution should be exercised when amyl nitrite is administered for diagnostic purposes.Keywords
This publication has 22 references indexed in Scilit:
- Nitroglycerin-induced severe hypotension and bradycardia in patients with acute myocardial infarction.Circulation, 1976
- Deglutition syncope.BMJ, 1975
- Letter: Carcinoma of the oesophagus with "swallow syncope".BMJ, 1975
- Role of sublingual nitroglycerin in patients with acute myocardial infarction.Heart, 1975
- Role of the Capacitance and Resistance Vessels in Vasovagal SyncopeCirculation, 1968
- The Effects of Nitroglycerin and Amyl Nitrite on Arteriolar and Venous Tone in the Human ForearmCirculation, 1965
- Glossopharyngeal Neuralgia Associated with Bradycardia, Syncope, and SeizuresCirculation, 1964
- Vasodepressor SyncopeCirculation, 1957
- The mechanism of cough syncopeAmerican Heart Journal, 1956
- HARMFUL EFFECTS OF NITROGLYCERIN. With Special Reference to Coronary ThrombosisThe American Journal of the Medical Sciences, 1932