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[Underestimation of renal risk in cardiology clinics. RICAR study]
V Bertomeu Martínez1, J R González-Juanatey, V Bertomeu-González
1Sección de Cardiología. Hospital Universitario de San Juan, Alicante.
Insights
Cardiologists rarely use recommended tests for early kidney dysfunction detection in hypertensive patients. Despite high rates of renal dysfunction, microalbuminuria and glomerular filtration rate testing remain underutilized, even in high-risk individuals.
Area of Science:
- Nephrology
- Cardiology
- Internal Medicine
Context:
- Hypertension is a significant risk factor for cardiovascular and renal diseases.
- Early detection of renal dysfunction is crucial for managing hypertensive patients.
- Cardiology outpatient clinics manage a large population of hypertensive patients.
Purpose:
- To evaluate the utilization of microalbuminuria and glomerular filtration rate (GFR) testing in hypertensive patients within cardiology clinics.
- To determine the prevalence of renal dysfunction in this patient cohort.
- To identify factors influencing the performance of these tests.
Summary:
- A multicenter observational study in Spain included 1224 hypertensive patients.
- Microalbuminuria was measured in 34% of patients, with 49% testing positive.
- GFR was determined in only 11% of patients, revealing significant renal dysfunction in 30%.
Impact:
- The study highlights a gap in the routine screening for renal dysfunction in hypertensive patients managed by cardiologists.
- Low utilization of recommended tests suggests a need for improved clinical practice guidelines and education.
- Findings underscore the importance of integrating renal function assessment into cardiovascular care to prevent adverse outcomes.
Aims:
The aim of this study was to assess the rate of patients attended in cardiology outpatient clinics in whom microalbumine or glomerular filtration rate had been determined, at least once, in the previous 12 months.
Methods:
It was an observational, transversal, multicentric study. 1224 patients were included from 124 centers in Spain. Epidemiological, anthropometric, analytic and electrocardiographic data were recruited. Glomerular filtration rate was calculated thereafter by means of the simplified equation of the MDRD. Results. Microalbumine was determined in 34% of the patients, of those 49% had positive microalbumine. Microalbumine rates were higher in patients with diabetes, heart failure, atrial fibrillation, peripheral artery disease or serum creatinine levels > 1.3 mg/dl. However, only young patients, diabetics and those with left ventricular hypertrophy had this exam performed more often. The glomerular filtration rate was determined in 11% of the patients. 30% of the population had moderate or severe renal dysfunction (filtration rate < 60 ml/min) and only 21% of the population hat normal renal function (filtration rate > 90 ml/min). Glomerular filtration rate was assessed more frequently in patients with serum creatinine > 1.3 mg/dl and those with history of heart failure.
Conclusions:
The prevalence of renal dysfunction in hypertensive patients attended in Cardiology clinics is high. However, the methods recommended for early detection of renal dysfunction are scarcely used by cardiologists. These figures do not improve significantly in high risk patients.
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