Evidence map›Paper›PMID 32715646›Full record

ArticleESC heart failure2020

Role of climatic factors in the incidence of Takotsubo syndrome: A nationwide study from 2012 to 2016.

Koshiro Kanaoka, Satoshi Okayama, Satoshi Terasaki, Tomoya Nakano, Masanobu Ishii, Michikazu Nakai, Kenji Onoue, Kunihiro Nishimura, Satoshi Yasuda, Kenichi Tsujita and 6 more

Open access · goldAbstract read
In one paragraph

Article in ESC heart failure, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
  2. The Japanese Society of Hypertension Practical Consensus Guidelines for Seasonal Blood Pressure Management.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. "Obesity paradox" and takotsubo syndrome.International journal of cardiology. Cardiovascular risk and prevention · 2022
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Hyperthermia as a trigger for Takotsubo syndrome in a rat model.Frontiers in cardiovascular medicine · 2022
    Article
  16. Article
  17. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors at 5 institutions in 1 country.

Koshiro KanaokaDepartment of Cardiovascular Medicine, Nara Medical University, 840 Shijo-cho, Kashihara City, Nara, Japan.
Satoshi OkayamaDepartment of Cardiovascular Medicine, Nara Medical University, 840 Shijo-cho, Kashihara City, Nara, Japan.
Satoshi TerasakiDepartment of Cardiovascular Medicine, Nara Medical University, 840 Shijo-cho, Kashihara City, Nara, Japan.
Tomoya NakanoDepartment of Cardiovascular Medicine, Nara Medical University, 840 Shijo-cho, Kashihara City, Nara, Japan.
Masanobu IshiiDepartment of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
Michikazu NakaiNational Cerebral and Cardiovascular Center, Suita, Japan.
Kenji OnoueDepartment of Cardiovascular Medicine, Nara Medical University, 840 Shijo-cho, Kashihara City, Nara, Japan.
Kunihiro NishimuraNational Cerebral and Cardiovascular Center, Suita, Japan.
Satoshi YasudaNational Cerebral and Cardiovascular Center, Suita, Japan.
Kenichi TsujitaDepartment of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
Rika KawakamiDepartment of Cardiovascular Medicine, Nara Medical University, 840 Shijo-cho, Kashihara City, Nara, Japan.
Yoshihiro MiyamotoNational Cerebral and Cardiovascular Center, Suita, Japan.
Hiroyuki TsutsuiDepartment of Cardiovascular Medicine, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan.
Issei KomuroDepartment of Cardiovascular Medicine, The University of Tokyo Graduate School of Medicine, Tokyo, Japan.
Hisao OgawaNational Cerebral and Cardiovascular Center, Suita, Japan.
Yoshihiko SaitoDepartment of Cardiovascular Medicine, Nara Medical University, 840 Shijo-cho, Kashihara City, Nara, Japan.ORCID 0000-0001-5574-3571
Nara Medical University · JPNational Cerebral and Cardiovascular Center · JPKumamoto University · JPKyushu University · JPThe University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimsThis study aimed to investigate the influence of climatic factors on the onset of Takotsubo syndrome (TTS). METHODS AND

resultsWe performed a retrospective nationwide study among patients registered in the Japanese Registry of All Cardiac and Vascular Diseases and Diagnosis Procedure Combination (JROAD-DPC) discharge database, between 2012 and 2016. Before the analysis, a multicentre validation study was conducted for assessing the accuracy of the JROAD-DPC classification for TTS. First, we investigated the seasonal variation of incidences of TTS. Second, we analysed the associations between the incidence of TTS and climatic factors using the hierarchical Poisson regression modelling, and we also investigated the associations between typhoon landfalls and hospitalization for TTS, using the fixed-effects conditional Poisson regression model. The sensitivity and specificity for diagnosis were 83% and 100%, respectively. Then we analysed 5643 patients with TTS. The mean patient age was 74 (standard deviation ± 11) years; 79% were female. TTS was diagnosed significantly more frequently in the summer and early autumn. The incidence of TTS was related to higher temperatures; adjusted incidence rate ratios were 1.46 [95% confidence interval (CI): 1.33-1.60, P < 0.01] and 1.47 (95% CI: 1.34-1.62, P < 0.01) for temperatures of 20-25°C and >25°C, respectively. The incidence rate ratio for the first 2 days after a typhoon landfall was 1.85 (95% CI: 1.07-3.19; P = 0.03).

conclusionsThis study demonstrates distinct patterns of seasonal variation in the incidence of TTS, as well as a significant association between its onset and climatic factors, including typhoon landfalls.

Indexed as

Takotsubo CardiomyopathyAgedAged, 80 and overFemaleHospitalizationHumansIncidenceMaleMiddle AgedRegistriesRetrospective StudiesClimatic eventsJROAD-DPCTakotsubo syndromeTyphoon

Identifiers

PMID32715646
PMCPMC7524088
OpenAlexW3045559183

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.