sublingual nitroglycerin (tng) has been introduced as a promising provocative agent for tilt table testing, but it has not been compared directly with the standard isoproterenol (iso) infusion test previously. we tried to assess the diagnostic value and safety of tng tilt testing as compared with iso infusion in patients with unexplained syncope. tng and iso tilt tests were performed in two suc...

investigating the parameters influencing the behavior of buried pipelines under dynamic loading is of great importance. in this study the soil structure interaction of the pipelines with the surrounding soil was addressed using shaking table tests. wave propagation along the soil layers was also included in the study. the semi infinite nature of the field was simulated using a laminar shear box...

conclusions hemodynamic response to the hutt was associated with age. cardioinhibitory response became less frequent with age due to exaggerated vagal activity in the younger patients as compared with the older subjects. background the head-up tilt test (hutt) is a useful diagnostic tool for syncope. objectives we sought to investigate the outcome of the hutt in syncope patients and identify th...