Simplifying contrast-induced acute kidney injury prediction after primary percutaneous coronary intervention: the age, creatinine and ejection fraction score

Area of Science:

• Cardiology
• Nephrology
• Medical Informatics

Background:

• Contrast-induced acute kidney injury (CI-AKI) is a frequent complication following percutaneous coronary intervention (PCI).
• Current preventive strategies, primarily saline hydration, have limitations, and no pharmacological prophylaxis has proven consistently beneficial.
• Predicting CI-AKI risk is crucial for patient management after PCI, especially in ST-elevation myocardial infarction (STEMI) cases.

Purpose of the Study:

• To evaluate the predictive accuracy of the ACEF-MDRD score for CI-AKI in STEMI patients undergoing primary PCI.
• To compare the predictive performance of the ACEF-MDRD score against the established Mehran score for CI-AKI.

Main Methods:

• A cohort of 347 patients with STEMI undergoing primary PCI was analyzed.
• CI-AKI was defined as a serum creatinine increase of ≥0.3 mg/dL or ≥50% within 24-72 hours post-procedure.
• The ACEF-MDRD score was calculated using age, glomerular filtration rate (MDRD), and ejection fraction.

Main Results:

• Univariate analysis identified age, diabetes, ASA use, Killip class, ACEF-MDRD score, and Mehran score as CI-AKI predictors.
• Multivariate analysis confirmed ACEF-MDRD score and diabetes as independent predictors of CI-AKI.
• The ACEF-MDRD score demonstrated a higher area under the ROC curve (0.733) compared to the Mehran score (0.649), with statistical significance (P=0.03).
• An ACEF-MDRD score ≤2.33 yielded a negative predictive value of 92.6% for CI-AKI.

Conclusions:

• The ACEF-MDRD score is a simple and accurate tool for predicting CI-AKI in STEMI patients undergoing primary PCI.
• A low ACEF-MDRD score (<2.33) effectively identifies patients at low risk for developing CI-AKI, aiding clinical decision-making.