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Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan
BACKGROUND: The aim of this study was to evaluate the temporal impact of the 2011 Japan earthquake and tsunami on the incidence of sudden cardiac and unexpected death (SCUD). METHODS AND RESULTS: We surveyed the impact of the disaster on the incidence and clinical characteristics of SCUD in Iwate. T...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Blackwell Publishing Ltd
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4309070/ https://www.ncbi.nlm.nih.gov/pubmed/24811614 http://dx.doi.org/10.1161/JAHA.114.000798 |
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author | Niiyama, Masanobu Tanaka, Fumitaka Nakajima, Satoshi Itoh, Tomonori Matsumoto, Tatsuya Kawakami, Mikio Naganuma, Yujiro Omama, Shinichi Komatsu, Takashi Onoda, Toshiyuki Sakata, Kiyomi Ichikawa, Takashi Nakamura, Motoyuki |
author_facet | Niiyama, Masanobu Tanaka, Fumitaka Nakajima, Satoshi Itoh, Tomonori Matsumoto, Tatsuya Kawakami, Mikio Naganuma, Yujiro Omama, Shinichi Komatsu, Takashi Onoda, Toshiyuki Sakata, Kiyomi Ichikawa, Takashi Nakamura, Motoyuki |
author_sort | Niiyama, Masanobu |
collection | PubMed |
description | BACKGROUND: The aim of this study was to evaluate the temporal impact of the 2011 Japan earthquake and tsunami on the incidence of sudden cardiac and unexpected death (SCUD). METHODS AND RESULTS: We surveyed the impact of the disaster on the incidence and clinical characteristics of SCUD in Iwate. To perform complete identification of SCUD for 8 weeks before and 40 weeks after the disaster, medical records and death certificates relevant to SCUD were surveyed in the study area. Compared with the previous year's rate, the incidence (per 10 000 person‐year) of SCUD for the initial 4 weeks after the disaster (acute phase) was double (33.5 vs 18.9), and thereafter the rate returned to the previous level. Significant relationships were found between weekly numbers of SCUD and seismic activity (intensity, r=0.43; P<0.005: frequency, r=0.46; P<0.002). The standardized incidence ratio (SIR) of SCUD in the acute phase was significantly increased compared with that of previous years (1.71, 95% CI 1.33 to 2.16). Increased SIRs were predominantly found in female subjects (1.73, 95% CI 1.22 to 2.37), the elderly (1.73, 95% CI 1.29 to 2.27), and residents living in the tsunami‐stricken area (1.83, 95% CI 1.33 to 2.46). In addition, SIRs for weekdays (1.71, 95% CI 1.28 to 2.24) and nights‐mornings (2.09, 95% CI 1.48 to 2.86) were amplified. CONCLUSIONS: The present results suggest that the magnitude of a disaster, related stress, and population aging may cause a temporary increase in the incidence of SCUD with amplification of ordinary weekly and circadian variations. |
format | Online Article Text |
id | pubmed-4309070 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Blackwell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-43090702015-01-28 Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan Niiyama, Masanobu Tanaka, Fumitaka Nakajima, Satoshi Itoh, Tomonori Matsumoto, Tatsuya Kawakami, Mikio Naganuma, Yujiro Omama, Shinichi Komatsu, Takashi Onoda, Toshiyuki Sakata, Kiyomi Ichikawa, Takashi Nakamura, Motoyuki J Am Heart Assoc Original Research BACKGROUND: The aim of this study was to evaluate the temporal impact of the 2011 Japan earthquake and tsunami on the incidence of sudden cardiac and unexpected death (SCUD). METHODS AND RESULTS: We surveyed the impact of the disaster on the incidence and clinical characteristics of SCUD in Iwate. To perform complete identification of SCUD for 8 weeks before and 40 weeks after the disaster, medical records and death certificates relevant to SCUD were surveyed in the study area. Compared with the previous year's rate, the incidence (per 10 000 person‐year) of SCUD for the initial 4 weeks after the disaster (acute phase) was double (33.5 vs 18.9), and thereafter the rate returned to the previous level. Significant relationships were found between weekly numbers of SCUD and seismic activity (intensity, r=0.43; P<0.005: frequency, r=0.46; P<0.002). The standardized incidence ratio (SIR) of SCUD in the acute phase was significantly increased compared with that of previous years (1.71, 95% CI 1.33 to 2.16). Increased SIRs were predominantly found in female subjects (1.73, 95% CI 1.22 to 2.37), the elderly (1.73, 95% CI 1.29 to 2.27), and residents living in the tsunami‐stricken area (1.83, 95% CI 1.33 to 2.46). In addition, SIRs for weekdays (1.71, 95% CI 1.28 to 2.24) and nights‐mornings (2.09, 95% CI 1.48 to 2.86) were amplified. CONCLUSIONS: The present results suggest that the magnitude of a disaster, related stress, and population aging may cause a temporary increase in the incidence of SCUD with amplification of ordinary weekly and circadian variations. Blackwell Publishing Ltd 2014-05-08 /pmc/articles/PMC4309070/ /pubmed/24811614 http://dx.doi.org/10.1161/JAHA.114.000798 Text en © 2014 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley Blackwell. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial (http://creativecommons.org/licenses/by-nc/3.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
spellingShingle | Original Research Niiyama, Masanobu Tanaka, Fumitaka Nakajima, Satoshi Itoh, Tomonori Matsumoto, Tatsuya Kawakami, Mikio Naganuma, Yujiro Omama, Shinichi Komatsu, Takashi Onoda, Toshiyuki Sakata, Kiyomi Ichikawa, Takashi Nakamura, Motoyuki Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan |
title | Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan |
title_full | Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan |
title_fullStr | Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan |
title_full_unstemmed | Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan |
title_short | Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan |
title_sort | population‐based incidence of sudden cardiac and unexpected death before and after the 2011 earthquake and tsunami in iwate, northeast japan |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4309070/ https://www.ncbi.nlm.nih.gov/pubmed/24811614 http://dx.doi.org/10.1161/JAHA.114.000798 |
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