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Published on: October 2, 2020
The effect of hemodialysis on intraocular pressure
Ayse Ebru Bahadir Kilavuzoglu1, Gurkan Yurteri2, Nurgul Guven3
1Department of Ophthalmology, Acibadem University School of Medicine, Istanbul, Turkey.
Insights
Hemodialysis (HD) significantly reduces intraocular pressure (IOP) in patients with end-stage renal disease. This study observed a decrease in IOP during HD, correlating with changes in serum osmolality and blood urea nitrogen.
Area of Science:
- Nephrology
- Ophthalmology
- Clinical Medicine
Background:
- The impact of hemodialysis (HD) on intraocular pressure (IOP) lacks consistent findings, yet is crucial for managing glaucoma patients with renal failure.
- Understanding HD's effects on IOP is vital for clinicians overseeing renal failure patients.
Purpose of the Study:
- To investigate the effects of hemodialysis on intraocular pressure (IOP) in patients diagnosed with end-stage renal disease.
Main Methods:
- A prospective study involving 106 patients undergoing outpatient hemodialysis.
- Measurements included serum osmolality, blood urea nitrogen, blood glucose, bicarbonate, hematocrit, blood pressure, and IOP at various stages of HD.
- Patient medical and ophthalmologic histories were documented.
Main Results:
- Intraocular pressure (IOP) showed a significant decrease from pre-HD (16.71 ±2.51 mm Hg) to end-HD (15.52 ±3.18 mm Hg) and post-HD (15.23 ±2.73 mm Hg).
- Hemodialysis led to significant changes in serum osmolality, blood urea nitrogen, blood glucose, bicarbonate, and hematocrit levels.
- A positive correlation was found between the change in IOP and the changes in serum osmolality and blood urea nitrogen at the end of HD.
Conclusions:
- Intraocular pressure (IOP) significantly decreases during hemodialysis.
- Further research is recommended to explore how blood parameter changes and ocular perfusion pressure influence IOP and optic nerve perfusion during HD.
Background:
The effect of hemodialysis (HD) on intraocular pressure (IOP) has been investigated before, but there is a lack of consensus. Clinicians dealing with renal failure patients are interested in the potential negative effects of HD on IOP and the course of glaucoma.
Objectives:
The aim of this study was to investigate the effects of HD on IOP in patients with end-stage renal disease.
Material And Methods:
This prospective study included 106 patients who were receiving outpatient hemodialysis. Patient history of systemic and ophthalmologic conditions was recorded. Serum osmolality (mOsm), blood urea nitrogen (BUN), blood glucose (BG), bicarbonate (BC), and hematocrit (Hct) levels at the start of HD (pre-HD), at the end of HD (end-HD), and 30 min after HD (post-HD) were measured. Systolic and diastolic blood pressures (SBP and DBP) and IOP were measured at pre-HD, 1-hour intervals during HD, end-HD, and post-HD.
Results:
A significant decrease in mOsm and BUN and a significant increase in BG, BC, and Hct levels were observed at end-HD (p < 0.05). Mean IOP was 16.71 ±2.51 mm Hg at pre-HD, 15.52 ±3.18 mm Hg at endHD, and 15.23 ±2.73 mm Hg at post-HD (p = 0.001; F = 4.439). Post-HD SBP and DBP were significantly lower than at pre-HD (p < 0.001). There was a positive correlation between the change in IOP and the change in mOsm and the change in BUN at end-HD (r = 0.315, p = 0.004; and r = 0.279, p = 0.012, respectively).
Conclusions:
IOP decreased significantly during HD in this study. Additional research on the effects of the change in blood parameters and ocular perfusion pressure on IOP and optic nerve perfusion during HD is recommended.
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