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CI-AKI in ACS patients undergoing PCI was associated with a 4.7-fold increased hazard of death within 90 days.

CI-AKI in ACS patients undergoing PCI was associated with a 4.7-fold increased hazard of death withi…
Photo by Faustina Okeke / Unsplash
Key Takeaway
Consider CI-AKI an independent predictor of increased 90-day mortality in ACS patients undergoing PCI.

This prospective cohort study examined the impact of contrast-induced acute kidney injury (CI-AKI) on survival in 192 patients with acute coronary syndrome undergoing percutaneous coronary intervention. The primary outcome assessed was short- to medium-term survival over a 90-day follow-up period. Secondary analyses identified factors associated with the development of CI-AKI.

CI-AKI occurred in 33% of the study population. Among patients who developed CI-AKI, mortality was 15% higher compared to those without the condition. Statistical analysis revealed a 4.7-fold increased hazard of death for patients with CI-AKI. This association remained significant after adjustment for other variables, identifying CI-AKI as an independent predictor of mortality.

Factors associated with the development of CI-AKI included advanced age, hypertension, chronic kidney disease, use of vasoactive drugs, and cardiorespiratory arrest. The study did not report specific adverse events, discontinuations, or tolerability data related to the interventions or the condition itself. Funding sources and potential conflicts of interest were not reported in the provided data.

Key limitations include the lack of reported setting details and the absence of data on specific adverse events or discontinuations. As an observational study, the findings indicate association rather than causation. The practice relevance underscores the importance of early identification and preventive strategies for CI-AKI in this high-risk population to mitigate potential mortality risks.

Study Details

Study typeCohort
EvidenceLevel 3
PublishedApr 2026
View Original Abstract ↓
Contrast-induced acute kidney injury (CI-AKI) remains a relevant complication in patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI), with important prognostic implications. This prospective cohort study evaluated factors associated with CI-AKI and its impact on short- to medium-term survival in patients with ACS treated with PCI. Patients were followed for 90 days between December 2019 and February 2021, with collection of sociodemographic, clinical, laboratory, and procedural data. CI-AKI incidence was analyzed using Poisson regression to estimate relative risks, and survival was assessed using a multivariable Cox proportional hazards model. 192 patients were analyzed, CI-AKI occurred in 33% of patients and was independently associated with advanced age, hypertension, chronic kidney disease, use of vasoactive drugs, and cardiorespiratory arrest. Mortality was 15% higher among patients who developed CI-AKI, and its occurrence was associated with a 4.7-fold increased hazard of death within 90 days, remaining an independent predictor after adjustment. These findings indicate that CI-AKI is a frequent and clinically relevant manifestation of cardiorenal interaction in ACS, strongly associated with increased medium-term mortality, underscoring the importance of early identification and preventive strategies in this high-risk population.
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