PREVALENCE AND FACTORS ASSOCIATED WITH LEFT VENTRICULAR REMODELING IN PATIENTS WITH CHRONIC KIDNEY DISEASE: A CROSS-SECTIONAL STUDY.

 

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PREVALENCE AND FACTORS ASSOCIATED WITH LEFT VENTRICULAR REMODELING IN PATIENTS WITH CHRONIC KIDNEY DISEASE: A CROSS-SECTIONAL STUDY.

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Daniel Alberto
Delgado Pineda
Daniel Alberto Delgado Pineda danieldelpi@gmail.com ISSSTE Nephrology Mexico City Mexico *
Sergio Ayala Flores sayalaflo@gmail.com ISSSTE Nephrology Mexico City Mexico -
Juana Citlali De la Torre García citlalidelatorreg@gmail.com ISSSTE Nephrology Mexico City Mexico -
Donovan Luna Pichardo donovanluna37@gmail.com ISSSTE Nephrology Mexico City Mexico -
Manuel Camacho Luna decamacholuna@gmail.com ISSSTE Nephrology Mexico City Mexico -
Oscar Lara Palafox palafox91.olp@gmail.com ISSSTE Nephrology Mexico City Mexico -
José Saulo Enriquez Cervantes sauloenriquezc@gmail.com ISSSTE Neprhology Mexico City Mexico -
Mario Eduardo Alamilla Sánchez silenoz1@hotmail.com ISSSTE Nephrology Mexico City Mexico -
Nicte Alaide Ramos García alaidenic2479@gmail.com ISSSTE Nephrology Mexico City Mexico -
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Chronic kidney disease (CKD) is a highly prevalent condition strongly associated with adverse outcomes; it significantly increases cardiovascular risk and mortality in this population. One of the most frequent echocardiographic findings is concentric left ventricular remodeling. Although this alteration results from abnormal cardio-renal interactions, it is important to identify predictors associated with this pathology.

This is a cross-sectional observational study of 195 patients with stage 5 CKD undergoing renal replacement therapy (95 on hemodialysis [HD], 100 on peritoneal dialysis [PD]) from a retrospective clinical database. Inclusion criteria: patients over 18 years old and at least 3 months since starting renal replacement therapy. Exclusion criteria: incomplete data for key variables of interest. Variable definitions: Left Ventricular Remodeling (LVR): Dichotomous variable based on standardized echocardiographic criteria; categorized as presence of concentric or eccentric remodeling or left ventricular hypertrophy. Myocardial Ischemia (MI): Dichotomous variable defined as the presence of any chronic coronary syndrome or acute myocardial infarction. Dialysis Modality: Dichotomous variable, categorized as HD and PD (PD as the reference group). Mineral Bone Disorder (MBD): Categorical (yes/no), defined by any of the following: PTH > 300 pg/mL, phosphorus > 5.5 mg/dL, or calcium < 8.5 mg/dL. Urine Output: Ordinal variable: 1 = <500 mL/day; 2 = 500–1000 mL/day; 3 = >1000 mL/day. CKD duration: Ordinal variable: 1 = <5 years; 2 = 5–10 years; 3 = >10 years. Other variables: Age (continuous), sex (male/female). Descriptive analysis: Frequencies and percentages were calculated for categorical variables; means and standard deviations for continuous variables. LVR and MI prevalence were estimated globally and by dialysis modality as well as MBD status. Statistical modeling: Multivariable logistic regression models were used to identify independent factors associated with LVR and MI. Predictors included: dialysis modality, MBD, age, sex, urine output, and CKD duration. An interaction term (HD×MBD) was added to assess effect modification. Model performance was evaluated using ROC curves and AUC. Statistical significance was set at p < 0.05. Analyses were performed using SPSS v26 (Windows). Tests used: Mann–Whitney (non-normal variables), Student’s t-test (normal), Chi-square or Fisher’s exact (categorical). Objectives: To determine the prevalence of left ventricular remodeling (LVR) and myocardial ischemia, as well as their predictive factors in patients with end-stage CKD on HD or PD.

his study included 195 patients, mean age 47.3 ± 12.4 years, 47.7% female. Overall MBD prevalence: 74.4%, with no significant PTH differences between HD (476.45 ± 489.17 pg/mL) and PD (488.91 ± 515.20 pg/mL; p = 0.871). Cardiovascular Phenotypes; Global LVR prevalence: 54.4% (106/195). Myocardial ischemia prevalence; 13.3% (26/195). Factors Associated with Left Ventricular Remodeling: The multivariable logistic regression model showed no statistically significant variables, though trends were seen for HD (OR 1.51; 95%CI 0.83–2.74; p = 0.174), MBD (OR 1.45; 95%CI 0.74–2.85; p = 0.279), and ischemia (OR 1.70; 95%CI 0.70–4.18; p = 0.244). Stratified analysis of MBD showed a strong trend with LVR (OR 2.45; 95%CI 0.89–6.74; p = 0.084), whereas in HD no effect was seen (OR 0.92; 95%CI 0.34–2.50; p = 0.866). A random-effects model with the HD×MBD interaction indicated HD was a significant predictor of LVR (OR 3.37; 95%CI 1.02–11.08; p = 0.046), with an attenuated MBD effect in HD. Factors associated with myocardial ischemia: trends suggested a protective effect of the HD therapy (OR 0.43; 95%CI 0.17–1.08; p = 0.072) and male sex association (OR 2.09; 95%CI 0.81–5.39; p = 0.127). LVR showed a nonsignificant positive association (OR 1.72; 95%CI 0.68–4.34; p = 0.250).

Variable

PD (n=100)

HD (n=95)

p

DEMOGRAPHICS

 

 

 

Age, years

49.0 [39.9–58.1]

50.0 [40.0–60.0]

0.548

Weight, kg

66.8 ± 12.6

66.6 ± 14.0

0.924

BMI, kg/m²

24.8 [22.7–27.0]

24.7 [21.6–27.7]

0.802

Male sex, n (%)

53 (53.0%)

40 (42.1%)

0.128

COMORBIDITIES

 

 

 

Diabetes mellitus, n (%)

40 (40.0%)

32 (33.7%)

0.361

Hypertension, n (%)

88 (88.0%)

85 (89.5%)

0.745

DIALYSIS PARAMETERS

 

 

 

Urine output, n (%)

69 (69.0%)

75 (78.9%)

0.192

  • >1000 mL/day (category 3)

10 (10.0%)

9 (9.5%)

 

  • 500–1000 mL/day (category 2)

21 (21.0%)

11 (11.6%)

 

Mineral Bone Disease (MBD), n (%)

37 (37.0%)

49 (51.6%)

0.062

LABORATORY

 

 

 

Hemoglobin, g/dL

11.0 ± 1.9

11.8 ± 2.1

0.006

Hematocrit, %

32.0 [28.3–35.7]

36.9 [32.9–40.9]

0.001

WBC, ×10³/µL

6.3 [4.7–7.9]

6.3 [5.1–7.4]

0.555

Platelets, ×10³/µL

268.0 [212.8–323.2]

206.0 [167.2–244.8]

<0.001

Glucose, mg/dL

92.0 [81.0–103.0]

86.0 [77.0–95.0]

<0.001

Total cholesterol, mg/dL

165.0 [138.8–191.2]

152.0 [124.0–180.0]

0.075

Sodium, mEq/L

137.0 [135.0–139.0]

138.0 [136.0–140.0]

0.730

Calcium, mg/dL

8.9 [8.4–9.4]

9.1 [8.4–9.8]

0.498

Phosphorus, mg/dL

5.8 [4.4–7.2]

4.7 [3.5–5.9]

0.003

PTH, pg/mL

323.0 [63.8–582.2]

310.0 [18.5–601.5]

0.911

ECHOCARDIOGRAPHY

 

 

 

LVEF (echo), n (%) - Preserved

92 (92.0%)

90 (94.7%)

0.639

  • Slightly reduced

6 (6.0%)

3 (3.2%)

 

  • Reduced

2 (2.0%)

2 (2.1%)

 

Pulmonary hypertension, low probability (echo), n (%)

88 (88.0%)

79 (83.2%)

0.308

  • Intermediate probability (echo)

10 (10.0%)

10 (10.5%)

 

  • High probability (echo)

2 (2.0%)

6 (6.3%)

 

Cardiac catheterization, n (%)

17 (17.0%)

12 (12.6%)

0.391

CV OUTCOMES

 

 

 

LV Remodeling (echo), n (%)

50 (50.0%)

56 (58.9%)

0.210

Ischemia, n (%)

18 (18.0%)

8 (8.4%)

0.049

Abbreviations: PD = peritoneal dialysis; HD = hemodialysis; BMI = body mass index; MBD = mineral bone disorder; LVEF = left ventricular ejection fraction; PTH = parathyroid hormone.

Continuous data are shown as mean ± SD (if normal) or median [IQR] (if non-normal); categorical as n (%). p calculated by Student’s t-test or Mann–Whitney; χ² or Fisher as appropriate. p < 0.001 shown as <0.001.

This study demonstrates considerable heterogeneity in the effect of MBD on LVR depending on dialysis modality. The MBD–LVR association was evident among PD patients but attenuated among HD patients. These findings suggest physiopathological differences between modalities may modulate the cardiovascular impact of mineral abnormalities. For myocardial ischemia, the protective trend seen with HD may relate to better cardiovascular risk factor control, though prospective studies are needed to confirm this. These findings support developing tailored management strategies by renal replacement therapy modality.

Kewords