Updated on 2025/07/02

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写真a

 
Masanari Asai
 
Organization
Yokohama City University Hospital Clinical Laboratory Department Assistant Professor
Title
Assistant Professor
External link

Research Interests

  • Cardiology

  • Onco-Cardiology

  • 虚血性心疾患

  • 冠動脈インターベンション

  • 不整脈

  • カテーテルアブレーション

Research Areas

  • Life Science / Cardiology

Education

  • Akita University   School of Medicine

    2010.4 - 2016.3

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  • Yokohama City University

    2025.4

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Research History

  • 横浜市立大学附属病院   循環器内科   助教

    2025.4

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  • 社会福祉法人恩賜財団 済生会横浜市南部病院   循環器内科   医員

    2024.4 - 2025.3

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  • 神奈川県立足柄上病院   循環器内科   医師

    2023.4 - 2024.3

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  • 社会福祉法人恩賜財団 済生会横浜市南部病院   循環器内科   医員

    2021.4 - 2023.3

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  • 横浜市立大学附属病院   循環器内科   専攻医

    2020.4 - 2021.3

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  • 茅ヶ崎市立病院   循環器内科   修練医

    2018.4 - 2020.3

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  • 横浜市立大学附属市民総合医療センター   初期臨床研修医

    2017.4 - 2018.3

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  • 小田原市立病院   初期臨床研修医

    2016.4 - 2017.3

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Professional Memberships

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Papers

  • Successful left ventricular lead placement by way of an azygos vein for a patient performing cardiac resynchronization therapy implantation with an occluded left subclavian vein: A case report. International journal

    Masanari Asai, Masayoshi Kiyokuni, Uemura Hiroki, Kazuho Ishii, Takumi Tokoro, Hiroyuki Ishikawa, Minako Kagimoto, Shunsuke Kataoka, Syotaro Kuji, Tatsuya Nakachi, Tsutomu Endo, Kiyoshi Hibi

    Pacing and clinical electrophysiology : PACE   47 ( 6 )   815 - 819   2024.6

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    Language：English   Publishing type：Research paper (scientific journal)  

    Central venous obstruction following pacemaker implantation is not uncommon and can prove challenging in the case of a system upgrade to a cardiac resynchronization therapy pacemaker (CRT-P). We describe the case of a patient who underwent a successful upgrading procedure of a pacemaker to a CRT-P in the presence of an occluded left subclavian vein and superior vena cava, using collateral veins that drained into right atrium.

    DOI： 10.1111/pace.14834

    PubMed

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  • Successful Catheter Ablation for Paroxysmal Supraventricular Tachycardia with Two Alternating Cycle Lengths.

    Masanari Asai, Masayoshi Kiyokuni, Kazuho Ishii, Yuuna Kine, Yu Yamada, Hiroyuki Ishikawa, Shintaro Koga, Shunsuke Kataoka, Katsutaka Hashiba, Tatsuya Nakachi, Tsutomu Endo

    Internal medicine (Tokyo, Japan)   63 ( 1 )   93 - 96   2024.1

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    Language：English  

    A 62-year-old male was transferred to our hospital complaining of palpitations. His heart rate was 185/min. Electrocardiogram showed a narrow QRS regular tachycardia and the tachycardia changed spontaneously to another narrow QRS tachycardia with two alternating cycle lengths. The arrhythmia was stopped by the administration of adenosine triphosphate. Findings from electrophysiological study suggested that there was an accessory pathway (AP) and dual atrioventricular (AV) nodal pathways. After AP ablation, any other tachyarrythmias were not induced. We supposed that the tachycardia was paroxysmal supraventricular tachycardia involving AP and anterograde conduction alternating between slow and fast AV nodal pathways.

    DOI： 10.2169/internalmedicine.1491-22

    PubMed

    J-GLOBAL

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  • Optimal Anticoagulant Strategy for Periprocedural Management of Atrial Fibrillation Ablation: A Systematic Review and Network Meta-Analysis. International journal

    Tabito Kino, Minako Kagimoto, Takayuki Yamada, Satoshi Ishii, Masanari Asai, Shunichi Asano, Hideto Yano, Toshiyuki Ishikawa, Tomoaki Ishigami

    Journal of clinical medicine   11 ( 7 )   2022.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    This network meta-analysis was performed to rank the safety and efficacy of periprocedural anticoagulant strategies in patients undergoing atrial fibrillation ablation. MEDLINE, EMBASE, CENTRAL, and Web of Science were searched to identify randomized controlled trials comparing anticoagulant regimens in patients undergoing atrial fibrillation ablation up to July 1, 2021. The primary efficacy and safety outcomes were thromboembolic and major bleeding events, respectively, and the net clinical benefit was investigated as the primary-outcome composite. Seventeen studies were included (n = 6950). The mean age ranged from 59 to 70 years; 74% of patients were men and 55% had paroxysmal atrial fibrillation. Compared with the uninterrupted vitamin-K antagonist strategy, the odds ratios for the composite of primary safety and efficacy outcomes were 0.61 (95%CI: 0.31-1.17) with uninterrupted direct oral anticoagulants, 0.63 (95%CI: 0.26-1.54) with interrupted direct oral anticoagulants, and 8.02 (95%CI: 2.35-27.45) with interrupted vitamin-K antagonists. Uninterrupted dabigatran significantly reduced the risk of the composite of primary safety and efficacy outcomes (odds ratio, 0.21; 95%CI, 0.08-0.55). Uninterrupted direct oral anticoagulants are preferred alternatives to uninterrupted vitamin-K antagonists. Interrupted direct oral anticoagulants may be feasible as alternatives. Our results support the use of uninterrupted direct oral anticoagulants as the optimal periprocedural anticoagulant strategy for patients undergoing atrial fibrillation ablation.

    DOI： 10.3390/jcm11071872

    PubMed

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MISC

  • ペーシング誘発性心筋症に対して,左鎖骨下静脈閉塞のため,側副路経由で左室リードを留置し心機能の改善を得た1例

    浅井真成, 成川雅俊, 上村紘生, 栗原直人, 所卓見, 石川博之, 久慈正太郎, 鍵本美奈子, 仲地達哉, 猿渡力, 日比潔

    植込みデバイス関連冬季大会プログラム・抄録集(Web)   17th   2025

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  • Setting CQs and Building Evidence through Systematic Review

    浅井真成, 所卓見, 堀米旭, 服部京子, 石井怜, 花島陽平, 岡崎善則, 小村直弘, 峯岸慎太郎, 石上友章, 日比潔, 日比潔

    日本高血圧学会総会プログラム・抄録集(CD-ROM)   46th   2024

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  • Comparison of Recurrence Rate and Procedure Time between Radiofrequency Catheter and 3rd Generation Laser Balloon Ablation for Paroxysmal Atrial Fibrillation

    ASAI Masanari, ASAI Masanari, KIYOKUNI Masayoshi, UEMURA Hiroki, ISHII Kazuho, TOKORO Takumi, ISHIKAWA Hiroyuki, KAGIMOTO Minako, KATAOKA Shunsuke, KUJI Shotaro, NAKACHI Tatsuya, ENDO Tsutomu, HIBI Kiyoshi

    日本循環器学会学術集会(Web)   88th   2024

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  • Frequency of Hypertension in Pediatric Cancer Survivors: a Systematic Literature Review and Meta-Analysis

    浅井真成, 所卓見, 峯岸慎太郎, 堀米旭, 服部京子, 石井怜, 花島陽平, 岡崎善則, 小村直弘, 石上友章, 日比潔, 日比潔, 矢野裕一朗, 西山成

    日本高血圧学会総会プログラム・抄録集(CD-ROM)   46th   2024

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  • レーザーバルーンと高周波アブレーションの手技時間,心房細動1年非再発率の比較検討

    浅井真成, 石井一帆, 木根佑奈, 石川博之, 片岡俊介, 清國雅義, 羽柴克孝, 仲地達哉, 猿渡力

    心電学関連春季大会プログラム・抄録集(Web)   2023   2023

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  • 虚血性心疾患による心肺停止から蘇生し,着脱型自動除細動器と皮下植え込み型除細動器を使用した若年男性

    浅井真成, 清國雅義, 石井一帆, 木根佑奈, 石川博之, 片岡俊介, 羽柴克孝, 仲地達哉, 猿渡力

    日本内科学会関東支部関東地方会   684th   2023

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  • A Case of a 35-Year-Old Man Who Recovered from Ventricular Fibrillation Due to Left Main Trunk Stenosis and Spasm

    ASAI Masanari, HASHIBA Katsutaka, ISHII Kazuho, KINE Yuna, ISHIKAWA Hiroyuki, KATAOKA Shunsuke, KIYOKUNI Masayoshi, NAKACHI Tatsuya, ENDO Tsutomu

    日本循環器学会学術集会(Web)   87th   2023

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  • 当院におけるレーザーバルーンと高周波アブレーションの比較

    浅井真成, 石井一帆, 木根祐奈, 石川博之, 片岡俊介, 清國雅義, 羽柴克孝, 仲地達也, 猿渡力

    日本不整脈心電学会カテーテルアブレーション関連大会(Web)   2022   2022

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  • 免疫チェックポイント阻害薬Durvalumabによると思われる心筋炎に対してステロイド治療を行い良好な転機をたどった一例

    浅井真成, 猿渡力, 石井一帆, 木根佑奈, 石川博之, 片岡俊介, 清國雅義, 羽柴克孝, 仲地達哉

    日本腫瘍循環器学会学術集会抄録集(Web)   5th   2022

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  • retrograde approachにて焼灼に成功した僧帽弁縫縮術後のAVRTの1例

    浅井真成, 清国雅義, 山田優, 古賀伸太郎, 石川博之, 片岡俊介, 羽柴克孝, 仲地達哉, 猿渡力, 石川利之

    日本不整脈心電学会カテーテルアブレーション関連大会(Web)   2021   2021

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  • 病病連携によって急性期死亡を免れた心室中隔穿孔の2症例

    浅井真成, 高倉美登里, 飯沼直紀, 高村智子, 廣江吉隆, 中戸川知頼, 望月孝俊, 片山郁雄, 磯田晋, 田村功一

    日本心臓病学会学術集会(Web)   67th   2019

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  • 癒着による小腸自然離断が腹腔鏡ビデオ撮影にて確認された直腸癌術後イレウスの一例

    浅井真成, 清家和裕, 亀高尚, 牧野裕庸, 深田忠臣, 鈴木崇之, 山下和志, 斎藤学

    日本臨床外科学会雑誌   77   2016

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Presentations

  • 青黛による肺高血圧症の長期フォロー例

    第259回日本循環器学会関東甲信越地方会  2021.2 

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    Event date： 2021.2

    Presentation type：Oral presentation (general)  

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  • IgG4関連収縮性心膜炎の一例

    第254回日本循環器学会関東甲信越地方会  2019.12 

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    Presentation type：Oral presentation (general)  

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  • 徐脈・ショックにて救急搬送され 回旋枝と右冠動脈の一期的血行再建にて 救命しえた一例

    第59回日本心血管インターベンション治療学会関東甲信越地方会  2022.5 

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    Presentation type：Oral presentation (general)  

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  • 人工血管-SVG吻合部の繰り返す再狭窄に対してGRAFTMASTERが効果的であった一例

    第57回日本インターベンション治療学会関東甲信越地方会  2021.5 

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Awards

  • Case Report Award 優秀賞

    2019.12   日本循環器学会 関東甲信越支部   IgG4関連収縮性心膜炎の一例

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