High-Sensitivity Troponin T Plasma Levels in Patients With Aortic Stenosis

Status Recruiting

Clinical Trial Summary

TASS-2 (Tyrolean Aortic Stenosis Study-2) aims to characterize the clinical value of minimally elevated troponin T plasma levels both in patients with asymptomatic and symtomatic aortic stenosis.

Clinical Trial Description

Development of symptoms such as heart failure, syncope or angina pectoris is the well-established indication for valve operation in patients with severe aortic stenosis. However, many patients tend to misinterpretate or even ignore symptom onset, and irreversible myocardial dysfunction may occur. Measurement of aortic valve area by transthoracic echocardiography using the continuity equation is prone to methological mistakes, whereas transvalvular gradients are usually easy to quantify but may underestimate hemodynamic effects in the presence of low flow (stroke volume index below 35 ml/m2). All these shortcomings in clinical routine may be overcome by objectively and easily assessable parameters indicating advanced aortic stenosis. Severe aortic valve calcification is such a risk factor for worse prognosis. However, assessment of valve calcification by echocardiography is a subjective measurement and highly operator-dependent. Quantification of valve calcification by multi detector computed tomography is limited by exposure to radiation, availibilty and cost. A laboratory parameter already used in clinical routine would fullfill the requirements for such a risk stratification much better. Natriuretic peptides may be of interest in this context, but their plasma levels are strongly influenced by age, sex, concomitant arterial hypertension and/or renal dysfunction and volume status. Recently, high-sensitivity troponin plasma levels have been suggested to indicate ongoing myocardial fibrosis in aortic stenosis. A small study with 60 patients suggested that hs-TnT predicte the operative outcome of AS. We therefore set out to characterize the clinical value of minimally elevated troponin T plasma levels both in patients with asymptomatic and symtomatic aortic stenosis. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT02448485
Study type	Observational
Source	Medical University Innsbruck
Contact	Wolfgang Dichtl, MD, PhD
Phone	004351250481388
Email	dichtl@me.com
Status	Recruiting
Phase
Start date	June 2015
Completion date	October 2025

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

High-Sensitivity Troponin T Plasma Levels in Patients With Aortic Stenosis (Tyrolean Aortic Stenosis Study-2) — TASS-2

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms