Phosphorus kinetics in patients with chronic renal failure on hemodialysis.

Authors

  • Juan Manuel Duran División de estudios de posgrado e investigación, Facultad de Medicina, Universidad Nacional Autónoma de Méxi-co, México D.F. 2. Servicio de Nefrología, Hospital de Especialidades “Dr. Bernardo Sepúlveda”, Centro Médico Nacional Siglo XXI, Instituto Mexicano de Seguridad Social, México D.F. Author https://orcid.org/0000-0002-9483-0990
  • María Inés Gil Arredondo División de estudios de posgrado e investigación, Facultad de Medicina, Universidad Nacional Autónoma de Méxi-co, México D.F. 2. Servicio de Nefrología, Hospital de Especialidades “Dr. Bernardo Sepúlveda”, Centro Médico Nacional Siglo XXI, Instituto Mexicano de Seguridad Social, México D.F. Author https://orcid.org/0000-0002-1083-7387
  • Pedro Trinidad Ramos Servicio de Nefrología, Hospital de Especialidades “Dr. Bernardo Sepúlveda”, Centro Médico Nacional Siglo XXI, Instituto Mexicano de Seguridad Social, México D.F Author https://orcid.org/0000-0002-0953-4741

DOI:

https://doi.org/10.56867/13

Keywords:

Renal Dialysis, Hemodiafiltración, Kinetics, Phosphorus Metabolism Disorders, Hyperphosphatemia

Abstract

Introduction: Hyperphosphatemia is one of the factors associated with high mortality in patients with chronic renal failure in dialysis programs. The objective of the present study was to perform intra- and post-dialysis serum phosphorus (P) kinetics, taking into account factors such as dialysis time and extracorporeal flow (Qs).

Methods: This cross-sectional study was conducted from September 2018 to January 2019. Baseline phosphate levels were analyzed at 60, 120, 180, and 240 intradialytic and 1 and 2 hours post-hemodialysis. A descriptive analysis was performed. Linear regression was performed to determine factors associated with post-hemodialysis serum P levels.

Results: 56 patients were included, 48 ± 13 years old, 30 women (53%), 46 with a catheter (82%), and 27 (48%) received treatment for 240 minutes. Qs of 300 ml/min in 11%, 350 ml/min in 65%, and 400 ml/min in 26% of cases. pH 7.3 ± 0.6, Hemoglobin 9.4 ±1.6 gr/dL. Basal P, at 60, 120, 180, and 240 minutes, was 5.3, 3.5, 2.9, 2.7, and 2.6 mg/dl, respectively. The P at 60 and 120 minutes post-HD were 3.5 and 3.75 mg/dl, respectively. Factors associated with the phosphorus level at 120 min post hemodialysis were hemoglobin P=0.004, Standardized beta coefficient (CBE) 0.247 (95% CI 0.04-0219), and phosphorus removal at 240 min P=0.001, CBE=0.503, (CI95% 0.265-0.905).

Conclusions: The decrease in phosphate in the study group was 50.9%, with a rebound elevation at 2 hours of 21.82%. Hemoglobin above 11 gr/dl is a factor associated with hyperphosphataemia. The intensity of phosphorus removal at 240 minutes is associated with serum phosphorus levels.

Published

2022-09-08

Issue

Section

Original Research

How to Cite

Phosphorus kinetics in patients with chronic renal failure on hemodialysis. (2022). Revista De La Sociedad Ecuatoriana De Nefrología, Diálisis Y Trasplante, 10(2), 56-63. https://doi.org/10.56867/13

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