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TRH stimulation test. Prior to the availability of sensitive TSH assays, thyrotropin releasing hormone (TRH) stimulation tests were relied upon for confirming and assessing the degree of suppression in suspected hyperthyroidism. Typically, this stimulation test involves determining basal TSH levels and levels 15 to 30 minutes after an intravenous bolus of TRH.
Tricuspid regurgitation (TR) is a valvular cardiac anomaly where there is regurgitation of flow from the right ventricle back into the right atrium through the tricuspid valve.It is considered an important predictor of both morbidity and mortality in heart failure 8.r Yuranga Weerakkody â et al. Tricuspid regurgitation (TR) is a valvular cardiac anomaly where there is regurgitation of flow from the right ventricle back into the right atrium through the tricuspid valve. It is considered an important predictor of both morbidity and mortality in heart failure 8.