Cardiac troponin and outcome in decompensated heart failure with preserved ejection fraction
Mohammad Thawabi1, Amer Hawatmeh1, Sarah Studyvin1
1Department of cardiology, Newark Beth Israel Medical Center, Newark, New Jersey, USA.
Insights
Elevated cardiac troponin I levels in hospitalized heart failure with preserved ejection fraction patients indicate a higher risk of mortality. This finding highlights troponin
Area of Science:
- Cardiology
- Biomarkers
- Heart Failure Research
Background:
- Cardiac troponin (cTn) is a known prognostic marker in heart failure with reduced ejection fraction.
- The prognostic significance of cTn in heart failure with preserved ejection fraction (HFpEF) remains unclear.
- This study investigates the role of troponin I in hospitalized HFpEF decompensation.
Purpose of the Study:
- To determine the prognostic value of troponin I in patients hospitalized for HFpEF decompensation.
- To compare mortality rates between HFpEF patients with and without elevated troponin I levels.
Main Methods:
- Included 363 consecutive patients hospitalized for HFpEF decompensation without acute coronary syndrome.
- Compared outcomes between patients with elevated troponin I (≥0.04 ng/mL) and normal troponin I levels.
- Primary outcome: all-cause mortality at short, intermediate, and long-term follow-up.
Main Results:
- Nearly half of the HFpEF cohort had elevated troponin I levels.
- Elevated troponin I was significantly associated with increased 30-day, 1-year, and 2-year mortality.
- Elevated troponin I independently predicted mortality in HFpEF decompensation.
Conclusions:
- Elevated troponin I levels are associated with significantly higher mortality in hospitalized HFpEF patients.
- Troponin I elevation serves as a crucial prognostic indicator in HFpEF decompensation.
Background:
Cardiac troponin (cTn) has been established as an effective prognostic marker in acute heart failure (HF) with predominantly reduced ejection fraction. However, it's prognostic value in heart failure with preserved ejection fraction (HFpEF) is unclear. The aim of this study is to describe the prognostic role of troponin I in patients hospitalized for HFpEF decompensation.
Methods:
We included 363 consecutive patients admitted for HFpEF decompensation that was not associated with acute coronary syndrome (ACS). Patients with troponin level elevation (troponin I level ≥0.04 ng/mL) were compared to patients with normal troponin level. The primary outcome was short-, intermediate-, and long-term all-cause mortality. The secondary outcomes were differences in B-type natriuretic peptide level (BNP), length of stay, and readmission rates between the two groups.
Results:
Nearly half of the patients in the Cohort had troponin level elevation. Troponin level elevation was significantly associated with higher 30-day (4.8% vs. 0.6%, P=0.014), 1-year (12.2% vs. 4.6%, P=0.009), and 2-year mortality (13.8% vs. 5.1%, P=0.005) when compared to a normal troponin level. Troponin level elevation was an independent predictor of mortality after adjusting for clinical and laboratory risk factors seen in HFpEF decompensation. Additionally, BNP level >287 pg/mL, age, and history of atrial fibrillation were identified as statistically significant predictors of mortality.
Conclusions:
Troponin level elevation, in hospitalized patients with HFpEF decompensation, was associated with higher short-, intermediate-, and long-term mortality.
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