BACKGROUND: The @entity135 ( @entity135 ) is a useful diagnostic tool for @entity1163 . OBJECTIVES: We sought to investigate the outcome of the @entity135 in @entity1163 @entity1 and identify the relationship between age and different hemodynamic outcomes. @entity1 AND METHODS: In this cross-sectional study, we prospectively enrolled consecutive @entity1 who presented with @entity1163 and underwent the @entity135 with a clinical suspicion of @entity907 after the exclusion of @entity551 cases. The @entity135 consisted of consecutive passive and active phases. In the passive phase, the @entity1 were tilted at 70 degrees for 20 minutes; and if negative, the test was repeated with 400 micrograms of sublingual @entity1242 for another 20 minutes. Positive responses were classified according to the classification of the @entity907 international study (VASIS) and compared for age and gender. RESULTS: A total of 498 @entity1 were enrolled (age = 44.93    18.77 years; male = 271 [54.4%]). Overall, 291 (58.4%) @entity1 had a positive @entity135 , while 256 (88.5%) @entity1 had a positive result during the active phase. The test results were as follows: 107 (36.7%) mixed type (VASIS I), 103 (35.3%) cardioinhibitory (VASIS IIA = 44 [15.1%]; VASIS IIB = 59 [20.2%]), and 80 (27.4%) vasodepressive (VASIS III). There was no relationship between gender and @entity1163 . The trend of the @entity135 result significantly changed with age, and the rate of @entity1163 after middle ages (P value for trend = 0.02). CONCLUSIONS: Hemodynamic response to the @entity135 was associated with age. Cardioinhibitory response became less frequent with age due to exaggerated vagal activity in the younger @entity1 as compared with the older subjects.

Age and the Head-Up Tilt Test Outcome in XXXX @entity1 .

@entity1 :: ('9606', 'Species') :: ['patients', 'PATIENTS'] @entity135 :: ('MESH:D006258', 'Disease') :: ['head-up tilt test', 'HUTT'] @entity907 :: ('MESH:D019462', 'Disease') :: ['neurocardiogenic syncope', 'vasovagal syncope'] @entity1242 :: ('MESH:D005996', 'Chemical') :: ['nitroglycerin'] @entity1163 :: ('MESH:D013575', 'Disease') :: ['syncope', 'cardioinhibitory syncope decreased', 'syncope type'] @entity551 :: ('MESH:D007022', 'Disease') :: ['orthostatic hypotension']
@entity1163 :: (MESH:D013575,Disease) :: ['Syncope']
