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  1. Article ; Online: Surgical Ablation of Ventricular Tachycardia.

    Nitta, Takashi

    Cardiac electrophysiology clinics

    2022  Volume 14, Issue 4, Page(s) 793–799

    Abstract: Surgery for ventricular tachycardia (VT) is indicated in patients in whom pharmacotherapy or catheter ablation is ineffective or frequent VT attacks are not suppressed or with frequent activation of implantable cardioverter defibrillator. In ischemic VT, ...

    Abstract Surgery for ventricular tachycardia (VT) is indicated in patients in whom pharmacotherapy or catheter ablation is ineffective or frequent VT attacks are not suppressed or with frequent activation of implantable cardioverter defibrillator. In ischemic VT, resection of fibrous endocardium combined with encircling cryothermia at the border between the infarcted and normal myocardium is performed. In surgery for VT associated with cardiomyopathy, close collaboration between the physician and surgeon is important and intraoperative mapping using electro-anatomic mapping system is helpful. In VT associated with cardiac tumors, cryothermia of the thinned subepicardial myocardium at the edge of the tumor is recommended in addition to resection of tumors.
    MeSH term(s) Humans ; Tachycardia, Ventricular/surgery ; Catheter Ablation ; Defibrillators, Implantable ; Endocardium/surgery ; Cardiomyopathies/surgery
    Language English
    Publishing date 2022-10-28
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 1877-9190
    ISSN (online) 1877-9190
    DOI 10.1016/j.ccep.2022.06.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Commentary: Linear Cryoablation Determines the Outcome of The Maze Procedure.

    Nitta, Takashi

    Seminars in thoracic and cardiovascular surgery

    2021  Volume 33, Issue 3, Page(s) 689–690

    MeSH term(s) Atrial Fibrillation/surgery ; Cryosurgery/adverse effects ; Heart Valve Diseases/surgery ; Humans ; Maze Procedure
    Language English
    Publishing date 2021-02-18
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 1038278-1
    ISSN 1532-9488 ; 1043-0679
    ISSN (online) 1532-9488
    ISSN 1043-0679
    DOI 10.1053/j.semtcvs.2021.01.050
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Commentary: Many things remain unlearned and undetermined.

    Nitta, Takashi

    The Journal of thoracic and cardiovascular surgery

    2021  Volume 166, Issue 3, Page(s) 767–768

    Language English
    Publishing date 2021-10-21
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 3104-5
    ISSN 1097-685X ; 0022-5223
    ISSN (online) 1097-685X
    ISSN 0022-5223
    DOI 10.1016/j.jtcvs.2021.10.027
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  4. Article ; Online: Is it about time to forget about intravascular lead?

    Nitta, Takashi

    The Journal of thoracic and cardiovascular surgery

    2018  Volume 155, Issue 4, Page(s) 1509–1510

    MeSH term(s) Prostheses and Implants
    Language English
    Publishing date 2018-01-05
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 3104-5
    ISSN 1097-685X ; 0022-5223
    ISSN (online) 1097-685X
    ISSN 0022-5223
    DOI 10.1016/j.jtcvs.2017.12.103
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Chemical ablation of the left ventricular endocardium reduces ventricular fibrillation inducibility in acute ischemic canine heart.

    Nitta, Takashi / Asano, Tetsuo / Yajima, Toshimi / Otsuka, Toshiaki / Ishii, Yosuke

    Journal of arrhythmia

    2024  Volume 40, Issue 2, Page(s) 325–332

    Abstract: Objective: Ventricular fibrillation remains as the major cause of death in patients with acute myocardial infarction. Effects of trans-atrial chemical ablation of the left ventricular (LV) endocardium with Lugol's solution on ventricular fibrillation ... ...

    Abstract Objective: Ventricular fibrillation remains as the major cause of death in patients with acute myocardial infarction. Effects of trans-atrial chemical ablation of the left ventricular (LV) endocardium with Lugol's solution on ventricular fibrillation inducibility and ventricular conduction were examined in canines with acute myocardial ischemia.
    Materials and methods: Chemical ablation of the LV endocardium with Lugol's solution or normal saline was preformed through a left atrial appendage in 14 canines 30 min after occlusion of the left anterior coronary artery.
    Results: Ventricular fibrillation threshold decreased after the coronary artery occlusion and increased after endocardial chemical ablation. There was a significant difference in the ventricular fibrillation threshold after chemical ablation between with Lugol's solution and with normal saline (25.9 ± 9.2 mA vs. 11.3 ± 2.7 mA,
    Conclusions: Chemical ablation of the LV endocardium with Lugol's solution injures endocardial conduction system and increases ventricular fibrillation threshold in the early phase of myocardial ischemia in canines. The procedure may be useful in suppressing intractable ventricular tachyarrhythmias in patients with acute myocardial ischemia.
    Language English
    Publishing date 2024-01-18
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2696593-8
    ISSN 1883-2148 ; 1880-4276
    ISSN (online) 1883-2148
    ISSN 1880-4276
    DOI 10.1002/joa3.12993
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  6. Article: [Anatomy and ablation of the coronary sinus and the mitral valve annulus].

    Nitta, Takashi

    Nihon Geka Gakkai zasshi

    2015  Volume 116, Issue 1, Page(s) 62–63

    MeSH term(s) Ablation Techniques/adverse effects ; Arrhythmias, Cardiac/etiology ; Atrial Fibrillation/surgery ; Cardiac Surgical Procedures/adverse effects ; Cardiac Surgical Procedures/methods ; Coronary Sinus/anatomy & histology ; Coronary Sinus/surgery ; Heart Atria ; Humans ; Mitral Valve/anatomy & histology ; Mitral Valve/surgery ; Postoperative Complications/etiology
    Language Japanese
    Publishing date 2015-01
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 412544-7
    ISSN 1880-1129 ; 0301-4894
    ISSN (online) 1880-1129
    ISSN 0301-4894
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.B 1737: Show issues Location:
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  7. Article: Recanalized saphenous vein graft once occluded in postoperative acute period.

    Shirakawa, Makoto / Nitta, Takashi / Ishii, Yosuke

    SAGE open medical case reports

    2022  Volume 10, Page(s) 2050313X221088166

    Abstract: A 69-year-old female with diabetes mellitus underwent off-pump coronary artery bypass grafting for old myocardial infarction and unstable angina with reduced left ventricular wall motion due to triple vessel disease. Although the saphenous vein graft was ...

    Abstract A 69-year-old female with diabetes mellitus underwent off-pump coronary artery bypass grafting for old myocardial infarction and unstable angina with reduced left ventricular wall motion due to triple vessel disease. Although the saphenous vein graft was confirmed to be patent during surgery, it developed occlusion at the distal anastomotic site on postoperative first day. However, recanalization was achieved for this saphenous vein graft following the administration of direct oral anticoagulants in addition to antiplatelet therapy. Anticoagulant therapy, in addition to antiplatelet therapy, should be considered for preventing and dissolving thrombus in postoperative acute period, especially in high-risk patients for thrombotic graft occlusion.
    Language English
    Publishing date 2022-03-22
    Publishing country England
    Document type Case Reports
    ZDB-ID 2736953-5
    ISSN 2050-313X
    ISSN 2050-313X
    DOI 10.1177/2050313X221088166
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  8. Article ; Online: Older Patients and Patients with Severe Arteriosclerosis Are Less Likely to Develop Keloids and Hypertrophic Scars after Thoracic Midline Incision: A Survey-Based Analysis of 328 Cases.

    Sugimoto, Atsuko / Ono, Shimpei / Usami, Satoshi / Nitta, Takashi / Ogawa, Rei

    Plastic and reconstructive surgery

    2022  Volume 150, Issue 3, Page(s) 659–669

    Abstract: Background: Surgery is a well-known trigger of keloid and hypertrophic scarring. Sternotomy scars are subject to high skin tension, which is known to promote pathologic scarring. This suggests that sternotomies in adults are associated with high ... ...

    Abstract Background: Surgery is a well-known trigger of keloid and hypertrophic scarring. Sternotomy scars are subject to high skin tension, which is known to promote pathologic scarring. This suggests that sternotomies in adults are associated with high pathologic scarring rates, which aligns with the authors' anecdotal experience. However, this notion has never been examined formally. Therefore, the authors conducted a survey-based cohort study of patients who had undergone a sternotomy.
    Methods: All consecutive Japanese adults (18 years of age or older) who underwent cardiovascular surgery with sternotomy in 2014 to 2017 were identified in 2019 by chart review and sent a questionnaire. Respondents formed the study cohort. The questionnaire presented randomly ordered photographs of representative mature, keloid, and hypertrophic scars and asked the patients to choose the image that best resembled their midline scar when it was particularly noticeable. The incidence of self-reported pathologic scarring (keloids and hypertrophic scars were grouped together) and the patient demographic (age and sex) and clinical characteristics (intima-media thickness of the left and right common and internal carotid arteries) that were associated with pathologic scarring were determined.
    Results: Of the 548 patients who underwent sternotomy, 328 responded for a 60 percent response rate. The mean patient age was 67 years, and 68.0 percent were male. Of these patients, 195 (59.5 percent) reported they had a pathologic scar. Compared with patients who had a mature scar, patients who had a pathologic scar had younger mean age (65 versus 69 years; p = 0.0002) and lower intima-media thickness (0.92 versus 1.05 mm; p = 0.028).
    Conclusions: Sternotomy was associated with a high rate of pathologic scarring. Older age and arteriosclerosis were associated with less pathologic scarring.
    Clinical question/level of evidence: Risk, III.
    MeSH term(s) Adolescent ; Adult ; Aged ; Arteriosclerosis/complications ; Carotid Intima-Media Thickness ; Cicatrix, Hypertrophic/epidemiology ; Cicatrix, Hypertrophic/etiology ; Cohort Studies ; Female ; Humans ; Keloid/epidemiology ; Keloid/etiology ; Keloid/surgery ; Male ; Surgical Wound/complications ; Surveys and Questionnaires
    Language English
    Publishing date 2022-07-06
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208012-6
    ISSN 1529-4242 ; 0032-1052 ; 0096-8501
    ISSN (online) 1529-4242
    ISSN 0032-1052 ; 0096-8501
    DOI 10.1097/PRS.0000000000009451
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.MO 293: Show issues

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  9. Article: Evaluation of a sludge-treatment process comprising lipid extraction and drying using liquefied dimethyl ether

    Wang, Quan / Oshita, Kazuyuki / Nitta, Takashi / Takaoka, Masaki

    Environmental technology. 2021 Sept. 19, v. 42, no. 21

    2021  

    Abstract: Liquefied dimethyl ether (DME) was used to extract lipids from sewage sludge. Factorial experimental analyses were used to evaluate the influence of different variables on raw lipid extraction and sludge drying. The DME method was compared with the Bligh ...

    Abstract Liquefied dimethyl ether (DME) was used to extract lipids from sewage sludge. Factorial experimental analyses were used to evaluate the influence of different variables on raw lipid extraction and sludge drying. The DME method was compared with the Bligh and Dyer (B&D) method for three undigested and two anaerobically digested dewatered sludges. The results indicate that although the raw lipid yield of the B&D method was 5% higher than that of the DME method, the proportion of fatty acid methyl esters (FAMEs) in raw lipids extracted by the DME method was 14.1–33.4%, almost twice that of the B&D method. The FAME composition varied according to sludge type, and the dewatered undigested sludges contained more unsaturated fatty acids (e.g. C18:1, C18:2). The lower heating value (LHV) of product by the DME method ranged from 3.74 to 5.70 MJ/kg compared with 1.21–0.39 MJ/kg for the B&D method. Also, DME could be reused at least five times without significantly reducing the lipid yield and drying efficiency. Finally, an economic analysis of the DME, the conventional solvent extraction, and the heat-drying methods was conducted.
    Keywords economic analysis ; environmental technology ; sewage sludge ; solvents
    Language English
    Dates of publication 2021-0919
    Size p. 3369-3378.
    Publishing place Taylor & Francis
    Document type Article
    ISSN 1479-487X
    DOI 10.1080/09593330.2020.1730982
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Invited commentary.

    Nitta, Takashi

    The Annals of thoracic surgery

    2012  Volume 93, Issue 3, Page(s) 803

    MeSH term(s) Atrial Fibrillation/diagnosis ; Atrial Fibrillation/etiology ; Coronary Artery Bypass/adverse effects ; Female ; Heart Atria/physiopathology ; Hospital Mortality ; Humans ; Male
    Language English
    Publishing date 2012-03
    Publishing country Netherlands
    Document type Comment ; Journal Article
    ZDB-ID 211007-6
    ISSN 1552-6259 ; 0003-4975
    ISSN (online) 1552-6259
    ISSN 0003-4975
    DOI 10.1016/j.athoracsur.2011.12.001
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