Is echocardiography mandatory for patients with chronic kidney disease?

Area of Science:

• Cardiology
• Nephrology
• Cardiorenal Medicine

Background:

• Hypertension is a major risk factor for cardiovascular disease, including diastolic dysfunction.
• Chronic kidney disease (CKD) is increasingly recognized as a significant contributor to cardiovascular complications.
• The relationship between advanced CKD and left ventricular diastolic dysfunction requires further investigation.

Purpose of the Study:

• To evaluate the prevalence of left ventricular diastolic dysfunction in hypertensive patients with advanced CKD (stages 3b-5).
• To compare diastolic function in CKD patients versus hypertensive patients with normal renal function.
• To identify the association between renal function and diastolic function in this population.

Main Methods:

• Echocardiographic examination was performed on 319 hypertensive patients with advanced CKD and 216 hypertensive patients with normal renal function.
• Exclusion criteria included early-stage CKD, dialysis, prior heart failure, or other cardiovascular diseases.
• Trans-mitral flow and tissue Doppler imaging parameters were used to assess diastolic function.

Main Results:

• Diastolic dysfunction was significantly more prevalent in the CKD group (70.5%) compared to the control group (41.6%) (p < 0.0001).
• Patients with renal disease exhibited significantly worse diastolic function.
• Multiple regression analysis confirmed an independent association between renal function and diastolic function (β = 0.223; p < 0.0001).

Conclusions:

• Diastolic dysfunction is highly prevalent in patients with advanced chronic kidney disease.
• Hypertensive patients with significantly decreased glomerular filtration rate (GFR) are at high risk for diastolic heart failure.
• Routine echocardiographic screening is recommended for asymptomatic CKD patients with reduced GFR, even without evident cardiovascular disease.