Key result
Decreased renal function in patients with autosomal dominant polycystic kidney disease was associated with a progressively higher prevalence of diastolic dysfunction (P<0.001).
Why the study?
Is the prevalence of diastolic dysfunction associated with the stage of chronic kidney disease in patients with autosomal dominant polycystic kidney disease?
Cross-Sectional (n=107)
Is the prevalence of diastolic dysfunction associated with the stage of chronic kidney disease in patients with autosomal dominant polycystic kidney disease?
p-value: p=<0.001
Diastolic dysfunction prevalence increases progressively as renal function deteriorates in patients with autosomal dominant polycystic kidney disease, independent of age and blood pressure.
Warrants prospective studies of diastolic monitoring in ADPKD with declining GFR; leaves open whether renal decline predicts cardiac events.
BACKGROUND: This study evaluates the prevalence of diastolic dysfunction (DD) in several stages of chronic kidney disease (CKD) in patients with autosomal dominant polycystic kidney disease (ADPKD). METHODS: 107 ADPKD patients performed echocardiographic and Doppler studies and a tissue Doppler imaging (TDI) study. Patients were divided in three groups: group 1, 57 patients with CKD stage I, group 2, 37 patients in stages II and III, and group 3, 13 patients with CKD stages IV and V (not on dialysis). RESULTS: In transmitral Doppler, 1 patient in group 1 compared to 5 in group 2, and 4 in group 3 exhibited DD (p < 0.005); moreover, E/A ratio decreases progressively from group 1 to 3 (p < 0.0001). In TDI, DD was observed in 8 patients in group 1, 17 in group 2, and 8 in group 3 had DD (p < 0.001). Em velocity, the best TDI parameter for DD, correlated with age, renal function and blood pressure. When adjusted for age, increased left ventricular mass index and decreased renal function were independent risk factors of DD. CONCLUSIONS: DD occurred progressively as renal function deteriorates in patients with ADPKD and this effect is independently related to age and blood pressure.
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Almeida et al. (2007) conducted a cross-sectional in Autosomal dominant polycystic kidney disease (n=107). Decreased renal function (CKD stages II-V) vs. Normal or mildly decreased renal function (CKD stage I) was evaluated on Diastolic dysfunction assessed by tissue Doppler imaging (p=<0.001). Decreased renal function in patients with autosomal dominant polycystic kidney disease was associated with a progressively higher prevalence of diastolic dysfunction (P<0.001).
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