Original InvestigationLack of seasonal variation in blood pressure in patients on hemodialysis in a North American center*,**
Section snippets
Methods
We studied the records of our entire population of 120 patients on thrice-weekly hemodialysis therapy. Seventeen patients were identified who were not hypertensive during December 1, 1998, to September 1, 1999, and who were not administered antihypertensive drugs during that period. Nonhypertensive patients were chosen to be similar to the patients of Argiles et al,9 85% of whom were normotensive. None of the patients had clinically apparent autonomic neuropathy. Eleven patients had
Results
There was no significant difference between winter and summer blood pressures (Fig 1). January through February blood pressures were 141 ± 5/75 ± 2 mm Hg compared with 140 ± 4/74 ± 2 mm Hg (P = 0.44, not significant [NS]). Similarly, individual single winter months were no
Discussion
These results show that, at least in a Canadian center, ambient temperature has no effect on predialysis blood pressures. The results contrast with a previous study from France in which blood pressure increased in winter, with a correlation between maximum ambient temperature and predialysis blood pressure.9 That winters are extreme in Winnipeg, contrary to the French center, strongly suggests that climatic temperature per se is not the cause of predialysis variations in blood pressures.
Certain
Acknowledgements
Acknowledgment: The author thanks Bunny Fontaine for assistance.
References (12)
- et al.
The role of hypertension on hemodialysis-associated atherosclerosis
Am J Med
(1980) - et al.
Simultaneous analysis of morbidity and mortality factors in chronic hemodialysis patients
Kidney Int
(1992) - et al.
Comparison of hemodialysis and hemodiafiltration: A long-term longitudinal study
Kidney Int
(1992) - et al.
Seasonal variation of blood pressure and overhydration in patients on chronic hemodialysis
Am J Kidney Dis
(2000) US Renal Data System: Annual data report: V1. Causes of death
Am J Kidney Dis
(1996)Department of Health and Human Services: 1996 Annual Report
(1997)
Cited by (20)
Seasonal Variation: A Non-negligible Factor Associated With Blood Pressure in Patients Undergoing Hemodialysis
2022, Frontiers in Cardiovascular MedicineThe effect of ambient temperature and humidity on interdialytic weight gains in end-stage renal disease patients on maintenance hemodialysis
2016, International Urology and NephrologyBlood pressure variability and pedigree analysis of nocturnal SBP dipping in Kumbas from rural Chhattisgarh, India
2014, Indian Journal of Experimental BiologyThe effectiveness of intensive nursing care on seasonal variation of blood pressure in patients on peritoneal dialysis
2012, Journal of Advanced Nursing
- *
Supported in part by Baxter Corp, Mississauga, Ontario, Canada.
- **
Address reprint requests to Adrian Fine, MD, Section of Nephrology, St Boniface General Hospital, 409 Tache Ave, Winnipeg, Manitoba, Canada R2H 2A6. E-mail: [email protected]