ABSTRACT
HUT testing with or without adjunctive pharmacologic agents is the most commonly used test for syncope evaluation. Several studies have shown that the vasodepressor-cardioinhibitory response seen during a HUT test is com - parable to spontaneous neurally mediated syncope (NMS).1,2
In the young healthy individual or the elderly with syncope of unknown etiology, it is considered the gold standard test.3,4 Throughout this chapter * denotes a Class I recommendation; # denotes a Class II recommendation and ^ denotes a Class III recommendation.
