Dialysis-related hypotension as a cause of progressive frontal lobe atrophy in chronic hemodialysis patients: A 3-year prospective study

Tohru Mizumasa, Hideki Hirakata, Takahiro Yoshimitsu, Eriko Hirakata, Michiaki Kubo, Minoru Kashiwagi, Hiroshi Tanaka, Hidetoshi Kanai, Satoru Fujimi, Mitsuo Iida

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Abstract

Background/Aim: Brain atrophy is known to develop more rapidly in hemodialysis (HD) patients than other individuals. The present study was designed to examine the role of HD-related hypotension in brain atrophy in patients on chronic HD. Methods: By using magnetic resonance imaging, whole brain atrophy was assessed by the ventricular-brain ratio (VBR; ventricular area/whole brain area). Frontal brain atrophy was assessed by the frontal atrophy index (FAI; frontal brain area/intracranial frontal space). The number of lacunae was also counted. We studied 32 HD patients without symptomatic neurological abnormalities or diabetes mellitus: male/female ratio 19/13; mean age ± SD 53 ± 10 (range 28-77) years; mean HD duration ± SD 11 ± 6 (range 1-22) years. Magnetic resonance imagings were taken in 1995 and 1998. All dialysis-related hypotension episodes during the same period were identified from the medical records and counted. Results: The VBR ranged from 8.8 to 18.7% in 1995 (12.8 ± 2.2%) and was not different in 1998 (13.1 ± 2.7%). However, the VBR increased by more than 5% in 14 patients, and their HD duration of 13 ± 6 years was significantly longer than that of 18 patients with stable VBR (p < 0.05). The FAI in 1995 was 62.2 ± 4.2% (range 55.8-71.3%) and decreased significantly to 59.7 ± 4.7% (range 50.2-70.9%) in 1998 (p < 0.05). The change in FAI correlated significantly with both the total number of dialysis-related hypotension episodes (r = 0.45, p < 0.05) and the increase in number of lacunae (r = 0.42, p < 0.05). Conclusion: Our results suggest that dialysis-related hypotension plays a role in progressive frontal lobe atrophy in HD patients.

Original languageEnglish
Pages (from-to)c23-c30
JournalNephron - Clinical Practice
Volume97
Issue number1
DOIs
Publication statusPublished - 15-06-2004

All Science Journal Classification (ASJC) codes

  • Nephrology

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    Mizumasa, T., Hirakata, H., Yoshimitsu, T., Hirakata, E., Kubo, M., Kashiwagi, M., Tanaka, H., Kanai, H., Fujimi, S., & Iida, M. (2004). Dialysis-related hypotension as a cause of progressive frontal lobe atrophy in chronic hemodialysis patients: A 3-year prospective study. Nephron - Clinical Practice, 97(1), c23-c30. https://doi.org/10.1159/000077592