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Epidemiology and outcome of the cardio-renal syndrome
Dinna N Cruz1, Mihai Gheorghiade, Alberto Palazzuoli
1Department of Nephrology, Dialysis and Transplantation, San Bortolo Hospital, Vicenza, Italy.
Insights
This review summarizes the epidemiology of cardio-renal syndrome (CRS) and its subtypes. Understanding these heart-kidney interactions is crucial for managing disease burden, morbidity, and mortality.
Area of Science:
- Cardiology
- Nephrology
- Epidemiology
Background:
- Cardiac and kidney diseases frequently coexist and pose significant clinical challenges.
- The Acute Dialysis Quality Initiative (ADQI) Working Group developed a classification for cardio-renal syndrome (CRS) and its subtypes.
- Existing guidelines acknowledge kidney dysfunction as a poor prognostic indicator in heart failure, yet patients with kidney issues are often excluded from trials.
Purpose of the Study:
- To review the epidemiology of cardio-renal syndrome (CRS) and its distinct subtypes.
- To highlight the importance of understanding the burden of disease, morbidity, mortality, and health resource utilization for each CRS subtype.
- To identify knowledge gaps and inform the design of future clinical studies on cardio-renal interactions.
Main Methods:
- This review synthesizes existing literature on the epidemiology of cardio-renal syndrome.
- It focuses on data stratified by the proposed ADQI classification of CRS subtypes.
- The review examines precipitating events, risk identification, natural history, and outcomes associated with CRS.
Main Results:
- Cardio-renal syndrome (CRS) is a common condition with distinct subtypes, each having unique pathophysiologic mechanisms and clinical features.
- Epidemiological data on CRS subtypes is essential for assessing disease burden, patient outcomes, and healthcare utilization.
- There is a need for more research, particularly including patients with kidney dysfunction, in clinical trials for heart failure interventions.
Conclusions:
- A comprehensive understanding of the epidemiology of cardio-renal syndrome (CRS) and its subtypes is critical for clinical practice and research.
- Further investigation into the specific epidemiological characteristics of each CRS subtype is warranted.
- Improved inclusion of patients with kidney dysfunction in clinical trials is necessary to advance the management of heart failure.
Abstract:
Cardiac and kidney disease are common, increasingly encountered and often co-exist. Recently, the Acute Dialysis Quality Initiative (ADQI) Working Group convened a consensus conference to develop a classification scheme for the CRS and for five discrete subtypes. These CRS subtypes likely share pathophysiologic mechanisms, however, also have distinguishing clinical features, in terms of precipitating events, risk identification, natural history and outcomes. Knowledge of the epidemiology of heart-kidney interaction stratified by the proposed CRS subtypes is increasingly important for understanding the overall burden of disease for each CRS subtype, along with associated morbidity, mortality and health resource utilization. Likewise, an understanding of the epidemiology of CRS is necessary for characterizing whether there exists important knowledge gaps and to aid the in the design of clinical studies. In the most recent European and American guidelines for heart failure management, acute kidney injury and dysfunction were considered an index of poor prognosis. Paradoxically, however, in many randomized trials of interventions for patients with heart failure, those with kidney injury or dysfunction are often excluded. This review will provide a summary of the epidemiology of the cardio-renal syndrome and its subtypes.
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