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  1. Article ; Online: Transcatheter mitral valve repair in a patient with prior atrial septal defect occlusion.

    Niikura, Hiroki / Burns, Marcus / Bae, Richard / Sorajja, Paul

    EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology

    2021  Volume 16, Issue 15, Page(s) e1272–e1273

    MeSH term(s) Heart Septal Defects, Atrial/complications ; Heart Septal Defects, Atrial/diagnostic imaging ; Heart Septal Defects, Atrial/surgery ; Humans ; Mitral Valve/diagnostic imaging ; Mitral Valve/surgery ; Mitral Valve Insufficiency/diagnostic imaging ; Mitral Valve Insufficiency/surgery
    Language English
    Publishing date 2021-02-05
    Publishing country France
    Document type Case Reports ; Journal Article
    ZDB-ID 2457174-X
    ISSN 1969-6213 ; 1774-024X
    ISSN (online) 1969-6213
    ISSN 1774-024X
    DOI 10.4244/EIJ-D-19-01064
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 6680: Show issues Location:
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    Zs.MO 571: Show issues

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  2. Article ; Online: Author`s Reply.

    Niikura, Hiroki / Iijima, Raisuke

    Anatolian journal of cardiology

    2018  Volume 19, Issue 1, Page(s) 79–80

    MeSH term(s) Aged ; Humans ; Tolvaptan
    Chemical Substances Tolvaptan (21G72T1950)
    Language English
    Publishing date 2018-02-13
    Publishing country Turkey
    Document type Letter ; Comment
    ZDB-ID 2278670-3
    ISSN 2149-2271 ; 2149-2263
    ISSN (online) 2149-2271
    ISSN 2149-2263
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  3. Article ; Online: Effectiveness of switching endoscopists for repeat surveillance colonoscopy: a retrospective study.

    Okada, Naoya / Arimoto, Jun / Nishiguchi, Takanori / Kobayashi, Mikio / Niikura, Toshihiro / Kuwabara, Hiroki / Nakaoka, Michiko / Nakajima, Atsushi / Chiba, Hideyuki

    BMC gastroenterology

    2023  Volume 23, Issue 1, Page(s) 347

    Abstract: Background: Surveillance colonoscopy decreases colorectal cancer mortality; however, lesions are occasionally missed. Although an appropriate surveillance interval is indicated, variations may occur in the methods used, such as scope manipulation or ... ...

    Abstract Background: Surveillance colonoscopy decreases colorectal cancer mortality; however, lesions are occasionally missed. Although an appropriate surveillance interval is indicated, variations may occur in the methods used, such as scope manipulation or observation. Therefore, individual endoscopists may miss certain areas. This study aimed to verify the effectiveness of performing repeat colonoscopies with a different endoscopist from the initial procedure.
    Methods: We retrospectively reviewed a database of 8093 consecutive colonoscopies performed in the Omori Red Cross Hospital from January 1st 2018 to June 30th 2021. Data from repeat total colonoscopies performed within three months were collected to assess missed lesions. The patients were divided into two groups according to whether the two examinations were performed by different endoscopists (group D) or the same endoscopist (group S). The primary outcome in both groups was the missed lesion detection rate (MLDR).
    Results: Overall, 205 eligible patients were analyzed. In total, 102 and 103 patients were enrolled in groups D and S, respectively. The MLDR was significantly higher in group D (61.8% vs. 31.1%, P < 0.0001). Multivariate logistic regression analysis for the detection of missed lesions identified performance by the different endoscopists (odds ratio, 3.38; 95% CI, 1.81-6.30), and sufficient withdrawal time (> 6 min) (odds ratio, 3.10; 95% CI, 1.12-8.61) as significant variables.
    Conclusions: Overall, our study showed a significant improvement in the detection of missed lesions when performed by different endoscopists. When performing repeat colonoscopy, it is desirable that a different endoscopist perform the second colonoscopy.
    Trial registration: This study was approved by the Institutional Review Board of the Omori Red Cross Hospital on November 28, 2022 (approval number:22-43).
    MeSH term(s) Humans ; Retrospective Studies ; Colonic Polyps/pathology ; Colonoscopy/methods ; Odds Ratio ; Adenoma/diagnosis ; Colorectal Neoplasms/diagnosis ; Colorectal Neoplasms/pathology
    Language English
    Publishing date 2023-10-06
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041351-8
    ISSN 1471-230X ; 1471-230X
    ISSN (online) 1471-230X
    ISSN 1471-230X
    DOI 10.1186/s12876-023-02981-3
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  4. Article ; Online: Transcatheter Mitral Valve Replacement with Tendyne.

    Niikura, Hiroki / Gössl, Mario / Sorajja, Paul

    Interventional cardiology clinics

    2019  Volume 8, Issue 3, Page(s) 295–300

    Abstract: Mitral regurgitation is the most commonly occurring valvular heart disease in developed countries. Transcatheter mitral valve replacement (TMVR) has emerged as a novel potential therapy for patients with severe mitral valve disease who are unsuitable ... ...

    Abstract Mitral regurgitation is the most commonly occurring valvular heart disease in developed countries. Transcatheter mitral valve replacement (TMVR) has emerged as a novel potential therapy for patients with severe mitral valve disease who are unsuitable candidates for conventional surgery or transcatheter edge-to-edge mitral repair. TMVR with the Tendyne prosthesis has shown potential at short-term follow-up to be an effective and safe treatment alternative for high-risk patients with severe mitral valve disease.
    MeSH term(s) Aged ; Aged, 80 and over ; Alloys ; Cardiac Catheterization/methods ; Clinical Trials as Topic ; Echocardiography, Transesophageal/methods ; Feasibility Studies ; Heart Valve Diseases/surgery ; Heart Valve Prosthesis Implantation/adverse effects ; Heart Valve Prosthesis Implantation/instrumentation ; Humans ; Mitral Valve/anatomy & histology ; Mitral Valve/diagnostic imaging ; Mitral Valve Insufficiency/diagnostic imaging ; Mitral Valve Insufficiency/etiology ; Mitral Valve Insufficiency/pathology ; Mitral Valve Insufficiency/surgery ; Multimodal Imaging/methods ; Non-Randomized Controlled Trials as Topic ; Prospective Studies ; Prosthesis Design/trends ; Quality of Life ; Severity of Illness Index ; Treatment Outcome ; Ventricular Outflow Obstruction/diagnostic imaging ; Ventricular Outflow Obstruction/etiology
    Chemical Substances Alloys ; nitinol (2EWL73IJ7F)
    Language English
    Publishing date 2019-04-06
    Publishing country Netherlands
    Document type Journal Article ; Review
    ISSN 2211-7466
    ISSN (online) 2211-7466
    DOI 10.1016/j.iccl.2019.02.003
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  5. Article ; Online: Assessments of prolonged effects of desflurane and sevoflurane on motor learning deficits in aged App

    Niikura, Ryo / Miyazaki, Tomoyuki / Takase, Kenkichi / Sasaguri, Hiroki / Saito, Takashi / Saido, Takaomi C / Goto, Takahisa

    Molecular brain

    2022  Volume 15, Issue 1, Page(s) 32

    Abstract: As the proportion of elderly in society increases, so do the number of older patients undergoing surgical procedures. This is concerning as exposure to anesthesia has been identified as a risk factor for Alzheimer's disease (AD). However, the causal ... ...

    Abstract As the proportion of elderly in society increases, so do the number of older patients undergoing surgical procedures. This is concerning as exposure to anesthesia has been identified as a risk factor for Alzheimer's disease (AD). However, the causal relationship between clinical AD development and anesthesia remains conjectural. Preclinical studies have demonstrated that anesthesia, such as halothane, isoflurane, and sevoflurane, induces AD-like pathophysiological changes and cognitive impairments in transgenic mouse models of AD. Desflurane does not have these effects and is expected to have more potential for use in elderly patients, yet little is known about its effects, especially on non-cognitive functions, such as motor and emotional functions. Thus, we examined the postanesthetic effects of desflurane and sevoflurane on motor and emotional function in aged App
    MeSH term(s) Aged ; Alzheimer Disease/complications ; Alzheimer Disease/metabolism ; Amyloid beta-Peptides/metabolism ; Amyloid beta-Protein Precursor/metabolism ; Animals ; Desflurane ; Disease Models, Animal ; Humans ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Sevoflurane/pharmacology
    Chemical Substances Amyloid beta-Peptides ; Amyloid beta-Protein Precursor ; Sevoflurane (38LVP0K73A) ; Desflurane (CRS35BZ94Q)
    Language English
    Publishing date 2022-04-07
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2436057-0
    ISSN 1756-6606 ; 1756-6606
    ISSN (online) 1756-6606
    ISSN 1756-6606
    DOI 10.1186/s13041-022-00910-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Cold snare defect protrusion and incomplete polyp resection after forced cold snare polypectomy: a prospective observational study.

    Arimoto, Jun / Chiba, Hideyuki / Yamada, Keiji / Nishiguchi, Takanori / Kobayashi, Mikio / Okada, Naoya / Suto, Takuma / Niikura, Toshihiro / Kuwabara, Hiroki / Nakaoka, Michiko / Ida, Tomonori

    Endoscopy

    2023  Volume 56, Issue 1, Page(s) 14–21

    Abstract: Background: Cold snare defect protrusions (CSDPs) that occur after cold snare polypectomy (CSP) are considered indicators of incomplete polyp resection (IPR). We have sometimes experienced difficulty resecting polyps with snaring alone; in such cases, a ...

    Abstract Background: Cold snare defect protrusions (CSDPs) that occur after cold snare polypectomy (CSP) are considered indicators of incomplete polyp resection (IPR). We have sometimes experienced difficulty resecting polyps with snaring alone; in such cases, a forcible pull on the snare by the endoscopist is necessary. We call this procedure "forced CSP (FCSP)." However, no previous studies have evaluated this procedure.
    Methods: This was a prospective observational study. From November 2020 to June 2021, the frequency, safety, and validity of FCSP were evaluated at our hospital. We distinguished CSP with snaring alone performed by the assistant as conventional CSP, and CSP requiring a forcible pull on the snare by the endoscopist as FCSP.
    Results: Of 1315 polyps removed, 105 underwent FCSP (8%). The perforation rate was 0% in both groups. The rate of CSDP after the procedure was 96.2% (101/105) with FCSP and 6.4% (77/1210) with conventional CSP (
    Conclusions: FCSP was performed on 105 polyps (8%) in this study. FCSP may be associated with the occurrence of CSDP and IPR. Further studies are necessary to confirm our results.
    MeSH term(s) Humans ; Colonic Polyps/surgery ; Colonoscopy/adverse effects ; Colonoscopy/methods ; Microsurgery ; Prospective Studies ; Risk Factors
    Language English
    Publishing date 2023-09-28
    Publishing country Germany
    Document type Observational Study ; Clinical Trial
    ZDB-ID 80120-3
    ISSN 1438-8812 ; 0013-726X
    ISSN (online) 1438-8812
    ISSN 0013-726X
    DOI 10.1055/a-2183-5505
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 669: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MO 162: Show issues

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  7. Article ; Online: The Successful Removal of Two Retrievable Inferior Vena Cava (IVC) Filters after 67 Days in a Patient with a Double IVC.

    Niikura, Hiroki / Anzai, Hitoshi / Kobayashi, Nobuyuki / Nakamura, Masato

    Internal medicine (Tokyo, Japan)

    2017  Volume 56, Issue 13, Page(s) 1667–1671

    Abstract: We herein present a case in which two retrievable inferior vena cava (IVC) filters, which were implanted to treat deep-vein thrombosis caused by the compression of a double IVC, were successfully removed on the 67th day after placement. The filters were ... ...

    Abstract We herein present a case in which two retrievable inferior vena cava (IVC) filters, which were implanted to treat deep-vein thrombosis caused by the compression of a double IVC, were successfully removed on the 67th day after placement. The filters were individually placed in both the left and right IVCs. With a prevalence of only 0.2%, a double IVC is an extremely rare anatomical variation. The long-term effects of IVC filters are unknown, and the placement of a filter potentially introduces the risk of complications. Thus, if the patient's clinical condition allows, the endovascular retrieval of the filter should be considered within a few months after implantation.
    Language English
    Publishing date 2017
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 32371-8
    ISSN 1349-7235 ; 0021-5120 ; 0918-2918
    ISSN (online) 1349-7235
    ISSN 0021-5120 ; 0918-2918
    DOI 10.2169/internalmedicine.56.7817
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    Zs.A 240: Show issues Location:
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  8. Article ; Online: Transcatheter closure of an aorto-right ventricular fistula after TAVR.

    Niikura, Hiroki / Schwartz, Jonathan G / Lin, David / Lesser, John / Sorajja, Paul / Gössl, Mario

    Cardiovascular intervention and therapeutics

    2018  Volume 34, Issue 3, Page(s) 290–292

    Language English
    Publishing date 2018-09-28
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2581654-8
    ISSN 1868-4297 ; 1868-4300
    ISSN (online) 1868-4297
    ISSN 1868-4300
    DOI 10.1007/s12928-018-0549-2
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    Zs.A 4771: Show issues Location:
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  9. Article ; Online: Transcatheter Mitral Valve Repair of Recurrent Mitral Regurgitation Following Mitral Surgery.

    Niikura, Hiroki / Bae, Richard / Gössl, Mario / Sun, Benjamin / Mudy, Karol / Sorajja, Paul

    JACC. Cardiovascular interventions

    2019  Volume 12, Issue 14, Page(s) 1395–1397

    MeSH term(s) Aged ; Aged, 80 and over ; Cardiac Catheterization/instrumentation ; Feasibility Studies ; Female ; Heart Valve Prosthesis ; Heart Valve Prosthesis Implantation/adverse effects ; Heart Valve Prosthesis Implantation/instrumentation ; Hemodynamics ; Humans ; Male ; Middle Aged ; Mitral Valve/diagnostic imaging ; Mitral Valve/physiopathology ; Mitral Valve/surgery ; Mitral Valve Annuloplasty/adverse effects ; Mitral Valve Annuloplasty/instrumentation ; Mitral Valve Insufficiency/diagnostic imaging ; Mitral Valve Insufficiency/physiopathology ; Mitral Valve Insufficiency/surgery ; Prosthesis Design ; Recovery of Function ; Recurrence ; Time Factors ; Treatment Outcome
    Language English
    Publishing date 2019-07-18
    Publishing country United States
    Document type Letter
    ZDB-ID 2452157-7
    ISSN 1876-7605 ; 1936-8798
    ISSN (online) 1876-7605
    ISSN 1936-8798
    DOI 10.1016/j.jcin.2019.02.044
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  10. Article ; Online: Simultaneous deployment of multiple device occluders and the anchor wire technique for a treatment of paravalvular defect of a surgical mitral ring.

    Niikura, Hiroki / Gössl, Mario / Burns, Marcus / Tang, Liang / Jay, Desmond / Sorajja, Paul

    Cardiovascular intervention and therapeutics

    2018  Volume 34, Issue 2, Page(s) 191–193

    Language English
    Publishing date 2018-07-13
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2581654-8
    ISSN 1868-4297 ; 1868-4300
    ISSN (online) 1868-4297
    ISSN 1868-4300
    DOI 10.1007/s12928-018-0535-8
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