TACIT (High Sensitivity Troponin T Rules Out Acute Cardiac Insufficiency Trial): An Observational Study to Identify Acute Heart Failure Patients at Low Risk for Rehospitalization or Mortality. (July 2019)

• Record Type: Journal Article
• Authors: Pang, Peter S.; Fermann, Gregory J.; Hunter, Benton R.; Levy, Phillip D.; Lane, Kathleen A.; Li, Xiaochun; Cole, Mette; Collins, Sean P.
• Is Part Of: Circulation. Volume 12:Number 7(2019)
• Publication Date: 2019-07
• Subjects: heart failure -- hospitalization -- mortality -- risk; Heart failure -- Periodicals; 616.129005
• DOI: 10.1161/CIRCHEARTFAILURE.119.005931
• Languages: English
• ISSNs: 1941-3289

Abstract

Abstract : Background: Identifying low-risk acute heart failure patients safe for discharge from the emergency department is a major unmet need. Methods AND RESULTS: A prospective, observational, multicenter pilot study targeting lower risk acute heart failure patients to determine whether hsTnT (high-sensitivity troponin T) identifies emergency department acute heart failure patients at low risk for rehospitalization and mortality. hsTnT was drawn at baseline and 3 hours. Phone follow-up occurred at 30 and 90 days. The primary end point composite of all-cause mortality, rehospitalization, and emergency department visits at 90 days (changed from 30 days because of lack of mortality events), analyzed using logistic regression. Secondary end points: 30- and 90-day all-cause mortality. hsTnT values less than the 99th percentile were defined as low hsTnT. Out of 527 enrolled patients, 499 comprised the initial analysis set. Of these, 332 had both 0- and 3-hour hsTnT drawn, of whom 319 completed 30 day follow-up. The average age was 62, 60% male, and 57% black. Median hsTnT was 26.4 ng/L (interquartile range, 15.1–44.3). There were 99 (21%) 30-day composite events, 13 (2.7%) deaths at 30 days, and 25 deaths (8.2%) at 90 days. Serial hsTnT values below the 99th percentile were not associated with a lower risk for the 90-day primary composite end point (odds ratio, 0.79; 95% CI, 0.42–1.50; P =0.4736). However, no deaths occurred in the low hsTnT group at 30 days with 1 death at 90 days. Conclusions: hsTnT did not identify patients at low risk for the primary outcome of rehospitalization, emergency department visits, and mortality at 90 days. Clinical Trial Registration: URL: https://www.clinicaltrials.gov . Unique identifier: NCT02592135. Abstract : Supplemental Digital Content is available in the text.