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ArticleHypertension research : official journal of the Japanese Society of Hypertension2026

Change in incidence of patients with peripartum cardiomyopathy.

Yusuke Kohno, Hiroaki Kawano, Ryohei Akashi, Masamichi Eguchi, Takashi Matsuo, Koji Oku, Sachie Suga, Shunpei Hyakutake, Shiro Hata, Takahiro Muroya and 4 more

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Article in Hypertension research : official journal of the Japanese Society of Hypertension, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

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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

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

14 authors.

Yusuke KohnoDepartment of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Hiroaki KawanoDepartment of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan. hkawano@nagasaki-u.ac.jp.
Ryohei AkashiDepartment of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Masamichi EguchiDepartment of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Takashi MatsuoDepartment of Cardiology, National Hospital Organization Nagasaki Medical Center, Omura, Nagasaki, Japan.
Koji OkuDepartment of Cardiology, National Hospital Organization Nagasaki Medical Center, Omura, Nagasaki, Japan.
Sachie SugaDepartment of Obstetrics and Gynecology, National Hospital Organization Nagasaki Medical Center, Omura, Nagasaki, Japan.
Shunpei HyakutakeDepartment of Cardiology, Sasebo City General Hospital, Sasebo, Japan.
Shiro HataDepartment of Cardiology, Sasebo City General Hospital, Sasebo, Japan.
Takahiro MuroyaDepartment of Cardiology, Sasebo City General Hospital, Sasebo, Japan.
Yuri HasegawaDepartment of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Kiyonori MiuraDepartment of Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Satoshi IkedaDepartment of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Koji MaemuraDepartment of Cardiovascular Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hypertensive disorders of pregnancy (HDP) are associated with some patients with peripartum cardiomyopathy (PPCM). However, no studies have reported changes in the incidence of PPCM before and after the introduction of calcium channel blockers (CCBs) for HDP treatment in Japan. Thirteen patients (aged 25-43 years; mean age, 33 years) with PPCM from two hospitals in Nagasaki Prefecture were included. PPCM was defined as idiopathic cardiomyopathy that occurs in late pregnancy or the months following delivery, without other causes of heart failure and with a left ventricular ejection fraction <45%. We compared the incidence of PPCM between the nine years from January 2003 to December 2011 (prior to CCB initiation) and the nine years from January 2012 to December 2020 (after CCB initiation). The incidence of PPCM has decreased after CCB initiation compared to prior to CCB initiation (0.36/year, 1/1520 births vs. 1 patient/year, 1/610 births). Treatment with HDP, including CCB, may prevent the development of PPCM in Japan.

Indexed as

CardiomyopathiesHypertension, Pregnancy-InducedPregnancy Complications, CardiovascularAdultCalcium Channel BlockersFemaleHumansIncidenceJapanPeripartum CardiomyopathyPeripartum PeriodPregnancyCalcium Channel BlockersCardiomyopathyDeliveryGuidelineHypertensionPregnancy

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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.