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Acute changes in home blood pressure after the Great East Japan Earthquake among patients with chronic kidney disease in Fukushima City

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An Editorial to this article was published on 06 February 2013

Abstract

Background

Blood pressure (BP) transiently increases after major earthquakes. Although home BP increased in hypertensive patients after the Great East Japan Earthquake (measuring 9.0 on the Richter scale) on March 11th, 2011, such profiles in patients with chronic kidney disease (CKD) have not been investigated.

Methods

This retrospective single-center observational study included 38 patients with CKD at the predialysis stage [male, n = 27 (71 %); mean age 66.0 years; mean estimated glomerular filtration rate (eGFR) 46.0 mL/min/1.73 m²] who lived in Fukushima City. We compared their morning BP between two and four weeks after the quake with that of a control group of 39 non-CKD patients with hypertension.

Results

Systolic BP (SBP) remained elevated for one week after the quake in the CKD and non-CKD groups [before vs. after the quake 133.7 ± 15.6 vs. 136.9 ± 16.9 (p = 0.017) and 129.9 ± 7.8 vs. 133.3 ± 9.3 mmHg (p = 0.009), respectively]. Increases in SBP in the morning after the quake were statistically significant in the group with but not in that without CKD (7.1 and 3.4 mmHg; p = 0.038 and 0.221, respectively). Multivariate analysis revealed that a low eGFR was an independent risk factor for elevated SBP after the quake.

Conclusions

The quake caused acute changes in the home BP and the fact that BP elevation correlated with renal function suggests a possible mechanism of CKD, such as enhanced activity of the sympathetic nervous system in such patients.

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Conflict of interest

All the authors have declared no competing interest.

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Authors and Affiliations

  1. Department of Nephrology, Hypertension, Diabetology, Endocrinology and Metabolism, Fukushima Medical University School of Medicine, 1 Hikarigaoka, Fukushima City, Fukushima, 960-1295, Japan

    Kimio Watanabe, Yoshihiro Tani, Kenichi Tanaka, Yoshimitsu Hayashi, Koichi Asahi, Masaaki Nakayama & Tsuyoshi Watanabe

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  1. Kimio Watanabe
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  2. Yoshihiro Tani
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  4. Yoshimitsu Hayashi
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  7. Tsuyoshi Watanabe
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Correspondence to Kimio Watanabe.

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Watanabe, K., Tani, Y., Tanaka, K. et al. Acute changes in home blood pressure after the Great East Japan Earthquake among patients with chronic kidney disease in Fukushima City. Clin Exp Nephrol 17, 718–724 (2013). https://doi.org/10.1007/s10157-012-0750-z

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  • DOI: https://doi.org/10.1007/s10157-012-0750-z

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