Troponin Elevation in Sickle Cell Disease.

Area of Science:

• Cardiology
• Hematology
• Pulmonology

Background:

• Sickle cell disease (SCD) is linked to cardiovascular issues, yet troponin's role is unclear.
• Troponin is not routinely measured in SCD patients, leaving its significance unknown.

Purpose of the Study:

• To evaluate troponin use in sickle cell pain crisis (SCPC) admissions.
• To identify factors associated with elevated troponin in SCPC patients.

Main Methods:

• Retrospective review of 724 patients admitted with SCPC (2006-2011).
• Comparison of patients with elevated troponin (ET) versus normal troponin (NT).
• Analysis included demographics, risk factors, pulmonary hypertension markers (tricuspid regurgitant jet velocity ≥3 m/s), and lab tests.

Main Results:

• Troponin I was measured in 63 patients; 12 (19%) had ET.
• ET was associated with lower hemoglobin and hematocrit.
• ET correlated with higher LDH, AST, bilirubin, and pulmonary hypertension (TRV ≥3 m/s).

Conclusions:

• Troponin elevation in SCPC is uncommon but associated with specific clinical markers.
• Findings suggest troponin elevation in SCPC is linked to hemolysis and pulmonary hypertension, not traditional cardiovascular risk factors.
• Troponin measurement is infrequent in SCPC patients, highlighting a gap in cardiac assessment.