C-reactive protein, not cardiac troponin T, improves risk prediction in hypertensives with type A aortic dissection

Area of Science:

• Cardiology
• Vascular Surgery
• Critical Care Medicine

Background:

• Type A acute aortic dissection (AAD) is a life-threatening condition requiring accurate prognostic assessment.
• Existing risk scores like the International Registry of Acute Aortic Dissection (IRAD) score may benefit from additional predictive markers.
• Inflammatory biomarkers, including C-reactive protein (CRP) and cardiac troponin T (cTnT), are being investigated for their prognostic role in AAD.

Purpose of the Study:

• To evaluate the prognostic significance of CRP and cTnT in patients with type A AAD.
• To determine if these biomarkers can improve risk stratification beyond the established IRAD score.

Main Methods:

• A cohort of 54 consecutive patients with type A AAD were assessed.
• Baseline levels of CRP and cTnT were measured.
• In-hospital mortality was evaluated as the primary outcome.
• Multivariable analysis and Receiver Operating Characteristic (ROC) curve analysis were employed.

Main Results:

• C-reactive protein (CRP) emerged as an independent predictor of in-hospital mortality in type A AAD.
• Cardiac troponin T (cTnT) did not show an independent association with mortality.
• CRP levels greater than 9.8 mg/l demonstrated high sensitivity (83%) and specificity (80%) for predicting mortality.
• Incorporating CRP into the IRAD score significantly improved the prediction of short-term outcomes (AUC increased from 0.74 to 0.89).

Conclusions:

• Admission CRP levels possess independent prognostic value in type A AAD.
• The addition of CRP to the IRAD score enhances the discriminative capacity for predicting in-hospital mortality.
• This improved prediction is valuable regardless of symptom duration or chosen treatment strategy.