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Survival and Risk Factors Among Dialytic Acute Kidney Injury Patients After Cardiovascular Surgery
Andrea B V Silva1, Agueda Maria Ruiz Zimmer Cavalcante2, Fabio P Taniguchi2
1Instituto Dante Pazzanese de Cardiologia, São Paulo, SP, Brazil.
Brazilian Journal of Cardiovascular Surgery
|July 26, 2018
Summary
Postoperative acute kidney injury (AKI) after cardiovascular surgery requiring dialysis is common. Dialysis in this setting significantly decreases survival, with age and complications being key risk factors.
Area of Science:
- Nephrology
- Cardiovascular Surgery
- Critical Care Medicine
Background:
- Acute kidney injury (AKI) is a common and serious complication following cardiovascular surgery.
- AKI is a known predictor of reduced survival rates.
- The impact of postoperative dialysis on survival after cardiovascular surgery remains unclear.
Purpose of the Study:
- To investigate the survival rates of patients who developed AKI requiring dialysis post-cardiovascular surgery.
- To identify risk factors associated with decreased survival in these patients.
Main Methods:
- Retrospective analysis of 5,189 cardiovascular surgeries over a 4-year period.
- Identified 157 patients who developed AKI requiring postoperative dialysis.
- Kaplan-Meier survival analysis and log-rank tests were employed.
Main Results:
- The average survival for patients requiring dialysis was 546 days, with a 70.7% mortality rate.
- Postoperative dialysis was associated with decreased late survival.
- Advanced age and the occurrence of postoperative complications were significant risk factors for reduced survival.
Conclusions:
- Postoperative AKI requiring dialysis significantly impacts long-term survival after cardiovascular surgery.
- Age and postoperative complications are critical risk factors influencing survival outcomes in this patient cohort.
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