The PROTROPIC feasibility study: prognostic value of elevated troponins in critical illness.

Purpose: Elevated cardiac troponin concentrations in people with critical illness are associated with an increased risk of death. We aimed to assess the feasibility of a larger study to ascertain the utility of cardiac troponin as a prognostic tool for mortality in critically ill patients.

Methods: Patients admitted to participating intensive care units during the one-month enrolment period were eligible.