scholarly journals Cardiovascular Effects of Unilateral Nephrectomy in Living Kidney Donors at 5 Years

Hypertension ◽  
2021 ◽  
Vol 77 (4) ◽  
pp. 1273-1284
Author(s):  
Anna M. Price ◽  
William E. Moody ◽  
Victoria M. Stoll ◽  
Ravi Vijapurapu ◽  
Manvir K. Hayer ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Glomerular Filtration Rate ◽  
Glomerular Filtration ◽  
Left Ventricular Mass ◽  
Filtration Rate ◽  
Estimated Glomerular Filtration Rate ◽  
Cardiovascular Effects ◽  
Left Ventricular ◽  
Mean Difference ◽  
Ventricular Mass

Kidney donation reduces renal function by ≈30% allowing study of the cardiovascular effects of a reduced estimated glomerular filtration rate without comorbidities. We report 5-year results of a longitudinal, parallel-group, blinded end-point study of living kidney donors (n=50) and healthy controls (n=45). The primary end point, left ventricular mass, was measured using cardiac magnetic resonance. Secondary end points, 24-hour ambulatory blood pressure, and pulse wave velocity were measured using validated blood pressure monitors and the SphygmoCor device. Effect sizes were calculated as differences between change from baseline in the donor and control groups. In donors, estimated glomerular filtration rate was 95±15 mL/min per 1.73 m2 at baseline (predonation) and 67±14 mL/min per 1.73 m2 at 5 years. In controls, there was a −1±2 mL/min per 1.73 m2 decline per annum. Change in left ventricular mass at 5 years was not significantly different between donors and controls (mean difference, +0.40 g [95% CI, −4.68 to 5.49] P =0.876), despite an initial increase in mass in donors compared with controls at 12 months. Pulse wave velocity, which increased in donors at 12 months, returned to levels not different from controls at 5 years (mean difference, −0.24 m/s [95% CI, −0.69 to 0.21]). Change in ambulatory systolic blood pressure was not different in donors compared with controls (mean difference, +1.91 mm Hg [95% CI, −2.72 to 6.54]). We found no evidence that the reduction in estimated glomerular filtration rate after kidney donation was associated with a change in left ventricular mass detectable by magnetic resonance imaging at 5 years.

U-shaped relationship between left ventricular mass index and estimated glomerular filtration rate in patients with primary aldosteronism

2019 ◽  
Vol 68 (2) ◽  
pp. 371-377
Author(s):  
Min-Tsun Liao ◽  
Che-Wei Liao ◽  
Cheng-Hsuan Tsai ◽  
Yi-Yao Chang ◽  
Zheng-Wei Chen ◽  
...  
Keyword(s):  
Glomerular Filtration Rate ◽  
Glomerular Filtration ◽  
Left Ventricular Mass ◽  
Primary Aldosteronism ◽  
Filtration Rate ◽  
Left Ventricular Mass Index ◽  
Estimated Glomerular Filtration Rate ◽  
Left Ventricular ◽  
Ventricular Mass Index ◽  
Ventricular Mass

Estimated glomerular filtration rate (eGFR) is an important topic in patients with primary aldosteronism (PA). However, the relationship between left ventricular structure and eGFR is unclear. We conducted a prospective, observational, and cross-sectional study to analyze 168 patients with PA and 168 propensity score-matched patients with essential hypertension (EH) as the control group, matched by age, gender, and systolic blood pressure. In the patients with PA, the eGFR was not correlated with left ventricular mass index (LVMI; r=−0.065, p=0.404), while in the patients with EH, the eGFR was negatively correlated with LVMI (r=−0.309, p<0.001). To test whether eGFR had a non-linear relationship with LVMI among the patients with PA, we stratified the patients with PA according to the tertile of eGFR (low, medium, and high tertile). The medium tertile of patients had a significantly lower LVMI than those in the other two tertiles (LVMI: 143.5±41.6, 120.5±40.5, and 133.1±34.3 g/m2, from the lowest to highest tertile of eGFR; analysis of covariance p=0.032). The medium tertile of eGFR is associated with lowest LVMI. Patients with PA with high and low eGFR were associated with higher LVMI. The findings implied that the reasons for an increased LVMI in patients with PA may be different to those in patients with EH.

Abstract 066: Association Between Nocturnal Blood Pressure Dipping Magnitude And Chronic Kidney Disease Risk Among Patients With Controlled Office Blood Pressure

Circulation ◽  
2021 ◽  
Vol 143 (Suppl_1) ◽  
Author(s):  
So Mi J Cho ◽  
Hokyou Lee ◽  
Tae-Hyun Yoo ◽  
Jong Hyun Jhee ◽  
Sungha Park ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Chronic Kidney Disease ◽  
Glomerular Filtration Rate ◽  
Kidney Disease ◽  
Glomerular Filtration ◽  
Lower Risk ◽  
Filtration Rate ◽  
Estimated Glomerular Filtration Rate ◽  
Disease Risk ◽  
Chronic Kidney Disease Risk

Although abnormal diurnal blood pressure (BP) patterns are associated with adverse cardiorenal outcomes, their risks are yet unquantified by BP dipping magnitude. We assessed chronic kidney disease risk across nocturnal BP dipping spectrum among patients with controlled hypertension without prior advanced kidney disease. Ambulatory BP measurements were collected from 995 middle-aged patients with controlled office BP (<140/90 mmHg). The magnitude of dipping was defined as the difference between daytime and nighttime systolic BP divided by daytime systolic BP. Accordingly, patients were categorized as extreme-dipper (≥20%) dipper (10-<20%), non-dipper (0-<10%), or reverse-dipper (<0%). We cross-sectionally analyzed continuous and categorical associations of dipping with albuminuria (urine albumin-to-creatinine ratio ≥30 mg/g) and decreased estimated glomerular filtration rate (<60 ml/min/1.73m 2 ), adjusting for office/ambulatory BP, antihypertensive class, body mass index, total cholesterol, fasting glucose, socioeconomic status, and health behavior. The participants (mean age 60.2 years; 52.9% male) consisted of 13.5% (134 of 995) extreme-dippers, 43.1% (429 of 995) dippers, 34.7% (345 of 995) non-dippers, and 8.7% (87 of 995) reverse-dippers. In reference to dippers, odds ratios (95% confidence interval) for albuminuria were 1.73 (1.04-2.60) in reverse-dippers, 1.67 (1.20-2.32) in non-dippers, and 0.62 (0.38-1.04) in extreme-dippers; this reflects significantly lower risk (0.77, 0.55-0.95) per 10% dipping. Likewise, persons presenting reduced and reverse-directional dipping were at higher risk for decreased estimated glomerular filtration rate: reverse-dippers 2.02 (1.06-3.84); non-dippers 1.98 (1.07-3.08); extreme-dippers 0.69 (0.20-1.17), with lower risk (0.74, 0.22-1.02) per every 10%. In short, monitoring nocturnal BP patterns may identify chronic kidney disease risk otherwise overlooked based on office BP.

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