Comparison of the Incidence of Acute Decompensated Heart Failure Before and After the Major Tsunami in Northeast Japan

Nakajima, Shigeru; Honma, Miho; Tanaka, Fumitaka; Sakai, Toshiaki; Endou, Hiroshi; Onodera, Masayuki; Kawakami, Mikio; Morino, Yoshihiro; Nakamura, Motoyuki

doi:10.1016/j.cardfail.2012.08.017

Cited by 6 publications

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“…Brown 17 used regional hospital discharge data and found that the number of admissions for HF did not increase immediately after the 2 major earthquakes that occurred in the United States in Loma Prieta in 1989 and in Northridge in 1994. In the 2011 Japanese earthquake and tsunami, however, agreeing with our previous report, 11 several single-center studies have reported that the number of admissions for HF during the first 3 weeks after the disaster was twice that of the time control period of the previous year. 18,19 The admission level returned to baseline in the next 3 weeks and remained at baseline for at least 10 months.…”

Section: Discussionsupporting

confidence: 90%

“…As in our previous report, 11 to elucidate the effects of the tsunami on HF events, each municipality was categorized as either a low-or high-impact area according to the degree of tsunami inundation (Figure 1, right). This definition was based on the percentage of tsunami flood area per built up area (TFA) in each municipality.…”

Section: Methodsmentioning

confidence: 99%

“…7e10 In terms of acute decompensated heart failure (HF), we have previously reported that the number of HF admissions in the tsunamistricken area in our prefecture doubled and reached a peak several weeks after the 2011 northeast Japan earthquake and tsunami (which occurred on March 11, 2011), with admission levels returning to baseline within 2 months. 11 In the same disaster, the number of ambulance transfers for possible patients with HF in the adjoining prefecture doubled immediately after the disaster and remained high for several weeks. 12 Few studies have examined the longterm effect on the incidence of HF after combined disasters such as an earthquake and subsequent tsunami.…”

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confidence: 99%

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Sustained Increase in the Incidence of Acute Decompensated Heart Failure After the 2011 Japan Earthquake and Tsunami

Nakamura

Tanaka

Komi

et al. 2016

The American Journal of Cardiology

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This study investigated the long-term impact of the 2011 Japan earthquake and tsunami on the incidence of acute decompensated heart failure (HF) in the disaster area. This was a population-based study using comprehensive registration for all hospitals within the study area. The standardized incidence ratio (SIR) and 95% confidence interval (CI) for new onset of HF during the disaster year (2011) and postdisaster years (2012 to 2014) were determined. When SIR were compared between the low- and high-impact areas, as defined by the extent of tsunami inundation in residential areas, SIR showed a significant increase in high-impact areas in 2011 (1.67, 95% CI 1.45 to 1.88) and tended to return to baseline in 2012, the first postdisaster year (1.25, 95% CI 1.06 to 1.43). The rate again increased in 2013 (1.38, 95% CI 1.18 to 1.57) and 2014 (1.55, 95% CI 1.35 to 1.75). In low-impact areas, no such increase was apparent during either the disaster year or the postdisaster years. Mean postdisaster period SIR for municipalities significantly correlated with the percentage of tsunami flooding in residential areas (r = 0.52, p <0.05) and with the percentage of refugees within the population (r = 0.74, p <0.01). There was no significant relation between maximum seismic intensity and mean SIR in these municipalities. In conclusion, these results suggest that the catastrophic tsunami but not the earthquake per se resulted in a prolonged increase in the incidence of HF among the general population living in tsunami-stricken areas.

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Section: Discussionsupporting

confidence: 90%

Section: Methodsmentioning

confidence: 99%

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confidence: 99%

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Sustained Increase in the Incidence of Acute Decompensated Heart Failure After the 2011 Japan Earthquake and Tsunami

Nakamura

Tanaka

Komi

et al. 2016

The American Journal of Cardiology

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“…There were no significant differences in maximum seismic intensity between the 2 areas (5.0±0.6 in tsunami area vs 4.6±0.4 in control area; NS). The definition of the flooding area and the maximum seismic intensities for each municipality were given in our previous report . Seismic intensity and frequency of aftershocks within the study area were obtained from the Iwate branch of the Japan Meteorological Agency.…”

Section: Methodsmentioning

confidence: 99%

Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan

Niiyama

Tanaka

Nakajima

et al. 2014

JAHA

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BackgroundThe 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 ResultsWe 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.ConclusionsThe 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.

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“…We identified 18 articles describing the development of cardiovascular diseases such as heart failure, atrial fibrillation, and acute myocardial infarction. [56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72][73] Even if people did not have hypertension before the GEJE, their blood pressure rose immediately after the earthquake. People working as public employees at the time of the GEJE who had evacuated to temporary housing or who lived in coastal areas were at high risk of hypertension.…”

Section: Cardiovascular Diseasementioning

confidence: 99%

Noncommunicable Diseases After the Great East Japan Earthquake: Systematic Review, 2011–2016

Murakami

Sasaki

Pascapurnama

et al. 2017

Disaster med. public health prep.

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Comparison of the Incidence of Acute Decompensated Heart Failure Before and After the Major Tsunami in Northeast Japan

Cited by 6 publications

References 0 publications

Sustained Increase in the Incidence of Acute Decompensated Heart Failure After the 2011 Japan Earthquake and Tsunami

Sustained Increase in the Incidence of Acute Decompensated Heart Failure After the 2011 Japan Earthquake and Tsunami

Population‐Based Incidence of Sudden Cardiac and Unexpected Death Before and After the 2011 Earthquake and Tsunami in Iwate, Northeast Japan

Noncommunicable Diseases After the Great East Japan Earthquake: Systematic Review, 2011–2016

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