Related Experiment Video
Updated: Feb 11, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Development and validation of a risk stratification score for new-onset atrial fibrillation in STEMI patients
Annamaria Mazzone1, Marco Scalese2, Umberto Paradossi1
1Fondazione G. Monasterio CNR-Regione Toscana Pisa, Massa, Italy.
Insights
A new ALBO risk score identifies patients at high risk for new-onset atrial fibrillation (NOAF) after ST-segment elevation myocardial infarction (STEMI) and primary percutaneous coronary intervention (pPCI). This tool aids in early intervention for better patient outcomes.
Area of Science:
- Cardiology
- Biomarkers
- Clinical Risk Stratification
Background:
- New-onset atrial fibrillation (NOAF) is a frequent complication in ST-segment elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (pPCI).
- NOAF is associated with adverse in-hospital and long-term prognosis.
- Predictive tools for early NOAF detection post-pPCI are needed.
Purpose of the Study:
- To develop and validate a risk score for early NOAF incidence.
- The score is based on clinical factors and routine blood biomarkers.
- To identify patients for prompt intervention after pPCI.
Main Methods:
- A risk score was developed in 1135 STEMI patients undergoing pPCI.
- External validation was performed in a separate cohort of 771 STEMI patients.
- Multivariate Cox-regression identified predictors: age, leukocyte count, BNP, and obesity.
Main Results:
- The ALBO risk score (Age, Leucocyte, BNP, Obesity) was derived.
- High predictive accuracy was observed in both derivation (C-statistic 0.734) and validation (0.76) cohorts.
- A score >4 identified a high-risk tertile with NOAF incidence of 30.8% and 27.4%.
Conclusions:
- The ALBO risk score effectively identifies patients at high risk for NOAF post-pPCI.
- It utilizes readily available clinical and biomarker data.
- Facilitates timely intervention strategies for high-risk individuals.
Aim:
New-onset atrial fibrillation (NOAF) is a complication not infrequent in patients with acute ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (pPCI) and has been associated with worse in-hospital and long-term prognosis. We aimed to develop and validate a risk score based on common clinical risk factors and routine blood biomarkers to assess the early incidence of NOAF post-pPCI, before discharge.
Methods:
The risk score for NOAF occurrence during hospitalisation (about 5 days) was developed in a cohort of 1135 consecutive STEMI patients undergoing pPCI while was externally validated in a temporal cohort of 771 STEMI patients. Biomarkers and clinical variables significantly contributing to predicting NOAF were assessed by multivariate Cox-regression analysis.
Results:
Independent predictors of NOAF were age ≥80 years (6.97 [3.40-14.30], hazard ratio [95% CI], P < .001), leukocyte count > 9.68 × 103 /μL (2.65 [1.57-4.48], P < .001), brain natriuretic peptide (BNP) > 80 ng/L (2.37 [1.13-4.95], P = .02) and obesity (2.07 [1.09-3.92], P = .03). By summing the hazard ratios of these predictors we derived the ALBO (acronym derived from: Age, Leucocyte, BNP and Obesity) risk score which yielded high C-statistics in both the derivation (0.734 [0.675-0.793], P < .001) and validation cohort (0.76 [0.688-0.831], P < .001). In both cohorts, using Kaplan-Meier risk analysis, the ALBO score identified a tertile of patients at highest risk (ALBO >4 points), with percentages of NOAF incidence of 30.8% and 27.4% in the derivation and validation cohort, respectively.
Conclusion:
The ALBO risk score, comprising biomarkers and clinical variables that can be assessed in hospital setting, could help to identify high-risk patients for NOAF after pPCI so that a prompter action can be taken.
Related Concept Videos
Amyloid Fibrils
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
Amyloid Fibrils
Reliability and Validity
In Vitro Drug Release Testing: Overview, Development and Validation
Introduction to z Scores
z scores...
Introduction to z Scores
z scores...

