ACS in Abidjan showed 9.5% in-hospital mortality with age, diabetes, Killip class ≥2, and severe ventricular rhythm disorders as independent predictors of death, while percutaneous coronary intervention was a protective factor.
Key Findings
Results
ACS accounted for 20.0% of all ICU admissions at the Abidjan Heart Institute over the study period.
661 patients presented with ACS among 3302 admitted to the ICU
Study period: January 2019 to December 2023
Data drawn from the REACTIV registry (REgistre des syndromes coronAriens aigus de Côte d'IVoire)
Observational prospective study design
Results
ACS occurred predominantly in relatively young patients with a strong male predominance.
Median age was 57 years [IQR 48–65]
Sex ratio of 2.86 (male predominance)
Hypertension was the most common cardiovascular risk factor at 55.6%
Active smoking was present in 33.4% and diabetes in 25.7% of patients
Results
Median time from symptom onset to hospital admission was 24 hours.
Median admission time was 24 hours [IQR 8–72]
This reflects delayed presentation to care in this population
Data collected from the ICU of the Abidjan Heart Institute
Results
Overall in-hospital mortality was 9.5%, with a declining trend from 2019 to 2023.
Overall in-hospital mortality rate: 9.5%
Mortality decreased from 11.2% in 2019 to 5.0% in 2023
This represents a more than twofold reduction over the five-year period
Results
Age was an independent predictor of in-hospital death after ACS in multivariate analysis.
Relative risk (RR) 1.08 per year increase in age (95% CI: 1.05–1.12)
Identified through multivariate analysis
Each additional year of age was associated with an 8% increase in relative risk of in-hospital death
Results
Diabetes was an independent risk factor for in-hospital death after ACS.
RR 1.9 (95% CI: 1.1–3.3) in multivariate analysis
Diabetes was present in 25.7% of the overall ACS population
Represents approximately a 90% increase in relative risk of in-hospital death
Results
Killip class ≥2 on admission was a strong independent predictor of in-hospital death.
RR 3.5 (95% CI: 2.1–5.8) in multivariate analysis
Killip classification reflects degree of heart failure at presentation
Patients with Killip class ≥2 had 3.5 times the risk of in-hospital death compared to those with lower Killip class
Results
Severe ventricular rhythm disorders were the strongest independent predictor of in-hospital death.
RR 8.3 (95% CI: 3.3–20.4) in multivariate analysis
This was the highest relative risk among all identified predictors
Identified as a risk factor through multivariate analysis
Results
Percutaneous coronary intervention (PCI) was an independent protective factor against in-hospital death.
RR 0.4 (95% CI: 0.2–0.7) in multivariate analysis
PCI was performed in 56% of patients
PCI was associated with a 60% reduction in relative risk of in-hospital death
What This Means
This research suggests that heart attacks (acute coronary syndromes, or ACS) are a major and growing health problem in Côte d'Ivoire, representing 1 in 5 admissions to the intensive care unit at the Abidjan Heart Institute over a five-year period. Patients tended to be relatively young (median age 57) and mostly male, and they often arrived at the hospital very late — a median of 24 hours after their symptoms began. Nearly 1 in 10 patients died during their hospital stay, though this rate improved notably over the study period, dropping from 11.2% in 2019 to 5.0% in 2023.
The study identified several factors that were associated with a higher risk of dying in the hospital: older age, having diabetes, arriving with signs of heart failure (Killip class ≥2), and experiencing dangerous heart rhythm problems. On the other hand, patients who received a procedure to open blocked coronary arteries (percutaneous coronary intervention, or PCI) were significantly less likely to die — about 60% lower relative risk — highlighting the life-saving potential of this intervention, which was performed in just over half of patients.
This research suggests that improving outcomes for ACS patients in this setting will require addressing delays in seeking care, expanding access to interventional procedures like PCI, and strengthening organized networks for ACS management. The findings also underscore the importance of managing cardiovascular risk factors such as diabetes and high blood pressure in the broader population.
Yao H, N'Zonzy S, Ekou A, Akoun C, Sepih E, Ehouman E, et al.. (2026). [Predictive factors for in-hospital death after acute coronary syndrome: Data from REACTIV registry 2019 to 2023].. Annales de cardiologie et d'angeiologie. https://doi.org/10.1016/j.ancard.2026.102036