Elevated baseline cardiac troponin levels in the elderly - another variable to consider?

Area of Science:

• Cardiology
• Emergency Medicine
• Biomarker Research

Background:

• Baseline high-sensitivity troponin T (hs-TnT) levels can be present in individuals without acute conditions.
• Understanding troponin T elevation in diverse age groups is crucial for accurate diagnosis in emergency settings.
• The influence of comorbidities on troponin T levels requires further investigation, especially in older populations.

Purpose of the Study:

• To determine the frequency of elevated hs-TnT in different age groups presenting to the Emergency Department (ED).
• To assess patients without acute coronary syndromes (ACS) or other acute illnesses causing troponin elevation.
• To investigate if the association between age and hs-TnT is independent of comorbidities.

Main Methods:

• Retrospective analysis of ED patient data where hs-TnT was measured (November 2010 - June 2011).
• Exclusion of patients with ACS or other acute conditions known to elevate troponin.
• Recording of demographics, clinical characteristics, diagnoses, and hs-TnT assay results.

Main Results:

• Elevated hs-TnT (>14ng/L) increased with age: 1.8% (<50 years), 7.3% (50-69 years), and 41.5% (≥70 years).
• Age over 70 was the strongest independent predictor of elevated hs-TnT (p<0.001).
• Other independent predictors included atrial fibrillation, age 50-69, male gender, heart failure, and ischemic heart disease.

Conclusions:

• Elevated hs-TnT levels are frequent in elderly ED patients without ACS or other acute illnesses.
• This age-related elevation appears independent of the increased comorbidity burden in older individuals.
• Findings suggest age itself is a significant factor in baseline hs-TnT levels, irrespective of acute conditions.