LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 36

Search options

  1. Article: Triple patch technique to repair ventricular septal rupture.

    Okamoto, Yuki / Yamamoto, Kazuo / Yoshii, Shinpei

    Annals of cardiothoracic surgery

    2022  Volume 11, Issue 3, Page(s) 273–280

    Abstract: Postinfarction ventricular septal rupture (VSR) remains an important and life-threatening complication of myocardial infarction (MI). Although several techniques have improved surgical outcomes of postinfarction VSR, the treatment is still challenging ... ...

    Abstract Postinfarction ventricular septal rupture (VSR) remains an important and life-threatening complication of myocardial infarction (MI). Although several techniques have improved surgical outcomes of postinfarction VSR, the treatment is still challenging with a high mortality rate. In addition, it is well known that a postoperative residual shunt after VSR repair is associated with poor outcomes; however, late outcomes involving patients with a residual shunt after VSR repair are lacking. This paper presents the early and late outcomes of patients who underwent the triple patch technique to repair a VSR and the usefulness in reducing a postoperative residual shunt. The main process of this technique is that the patch is gently placed on the myocardium with over and over suture and is firmly attached using glue. Therefore, the triple patch technique is simple and easy to perform, and is designed to minimize residual shunt and exclude infarcted myocardium. In the present keynote lecture, we describe our surgical technique and the results of VSR repair.
    Language English
    Publishing date 2022-06-13
    Publishing country China
    Document type Journal Article ; Review
    ZDB-ID 2713627-9
    ISSN 2304-1021 ; 2225-319X
    ISSN (online) 2304-1021
    ISSN 2225-319X
    DOI 10.21037/acs-2021-ami-13
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Atrial electrical remodeling and function after transcatheter aortic valve replacement in patients with aortic stenosis.

    Homma, Yujiro / Takahashi, Minoru / Fuse, Koichi / Okamoto, Yuki / Yamamoto, Kazuo / Kuwabara, Atsushi / Okabe, Masaaki / Yoshii, Shinpei / Kato, Kiminori / Akazawa, Kohei / Aizawa, Yoshifusa

    Heart and vessels

    2023  Volume 39, Issue 2, Page(s) 167–174

    Abstract: To examine reverse atrial electrical remodeling in patients with aortic stenosis (AS) after trans-catheter aortic valve replacement (TAVR). In 65 consecutive patients with severe AS (83 ± 4 years, 47 (72.3%) females), we analyzed ECG records for the P ... ...

    Abstract To examine reverse atrial electrical remodeling in patients with aortic stenosis (AS) after trans-catheter aortic valve replacement (TAVR). In 65 consecutive patients with severe AS (83 ± 4 years, 47 (72.3%) females), we analyzed ECG records for the P wave duration (PWD) in lead II and P-terminal force (PTFV1) in V1, and measured cardiac dimensions and function by echocardiography (ECHO) following TAVR. Biomarkers were measured to assess myocardial injury by TAVR. TAVR was successfully performed without major complications: the aortic valve area increased from 0.62 ± 0.14 cm
    MeSH term(s) Female ; Humans ; Male ; Transcatheter Aortic Valve Replacement/adverse effects ; Transcatheter Aortic Valve Replacement/methods ; Atrial Remodeling ; Treatment Outcome ; Ventricular Function, Left ; Aortic Valve Stenosis/diagnosis ; Aortic Valve Stenosis/surgery ; Aortic Valve/diagnostic imaging ; Aortic Valve/surgery ; Severity of Illness Index ; Retrospective Studies
    Language English
    Publishing date 2023-10-16
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 89678-0
    ISSN 1615-2573 ; 0910-8327 ; 0935-736X
    ISSN (online) 1615-2573
    ISSN 0910-8327 ; 0935-736X
    DOI 10.1007/s00380-023-02321-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Peritoneal natural killer cell chemotaxis is decreased in women with pelvic endometriosis.

    Ushiwaka, Takashi / Yamamoto, Shinpei / Yoshii, Chika / Hashimoto, Shoko / Tsuzuki, Tamami / Taniguchi, Kayo / Izumiya, Chiaki / Kobayashi, Hiroaki / Maeda, Nagamasa

    American journal of reproductive immunology (New York, N.Y. : 1989)

    2022  Volume 88, Issue 3, Page(s) e13556

    Abstract: Problem: NK cell and macrophage function are decreased in endometriosis, and the disease may involve reduced immune surveillance in the peritoneal cavity. NK cell cytotoxicity and migration ability (chemotaxis) are considered important; the former has ... ...

    Abstract Problem: NK cell and macrophage function are decreased in endometriosis, and the disease may involve reduced immune surveillance in the peritoneal cavity. NK cell cytotoxicity and migration ability (chemotaxis) are considered important; the former has been investigated, but the latter has not.
    Method of study: We compared chemotaxis of immunocompetent cells (NK cells, macrophages, T cells) in peritoneal fluid obtained during laparoscopy in 27 women with and 13 without endometriosis. Peripheral blood NK cells were also obtained by the peripheral blood antibody beads method. Micro-cultured cells were examined by time-lapse photography, and the mean migration speed per cell was calculated as the chemotaxis. We investigated the relationship between chemotaxis and endometriosis.
    Results: NK cell chemotaxis was significantly lower in the endometriosis group. Macrophages and lymphocytes were not significantly different between the groups. During menstruation, NK cell chemotaxis decreased in both groups. Postmenstrual chemotaxis was increased significantly in women without endometriosis but remained low in women with endometriosis. The Revised-American Society for Reproductive Medicine score was not correlated with chemotaxis; in women with endometriosis, chemotaxis was decreased even at early stages. Peripheral blood NK cells showed no significant differences.
    Conclusions: In women with endometriosis, not only cytotoxicity but also chemotaxis by NK cells in peritoneal cavity is significantly decreased, and particularly chemotaxis is decreased throughout the menstrual cycle. Therefore, antigens in retrograde menstrual blood that enters the peritoneal cavity might be left unprocessed. Repetition of this immune process in the peritoneal cavity may lead to the onset and subsequent progression of endometriosis.
    MeSH term(s) Ascitic Fluid/metabolism ; Chemotaxis ; Endometriosis ; Female ; Humans ; Killer Cells, Natural ; Peritoneum/metabolism
    Language English
    Publishing date 2022-05-04
    Publishing country Denmark
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 604542-x
    ISSN 1600-0897 ; 0271-7352 ; 8755-8920 ; 1046-7408
    ISSN (online) 1600-0897
    ISSN 0271-7352 ; 8755-8920 ; 1046-7408
    DOI 10.1111/aji.13556
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: [Stanford Type A Acute Aortic Dissection with Acute Myocardial Infarction due to Compression of Left Main Coronary Artery:Report of a Case].

    Asami, Fuyuki / Yamamoto, Kazuo / Katsu, Masatake / Okamoto, Yuuki / Ooba, Eiichi / Takesue, Yuuki / Umezawa, Maiko / Sato, Taiki / Yoshii, Shinpei

    Kyobu geka. The Japanese journal of thoracic surgery

    2022  Volume 75, Issue 9, Page(s) 688–692

    Abstract: A 58-year-old man was admitted to our institution with sudden onset of hypotension and acute ischemia of left lower extremity. Electrocardiography showed ST segment elevation in leads V1~V6 and a transthoracic echocardiogram revealed antero-septal wall ... ...

    Abstract A 58-year-old man was admitted to our institution with sudden onset of hypotension and acute ischemia of left lower extremity. Electrocardiography showed ST segment elevation in leads V1~V6 and a transthoracic echocardiogram revealed antero-septal wall hypokinesis. He was given a diagnosis of acute myocardial infarction caused by left main coronary artery compression due to acute aortic dissection by enhanced computed tomography. We implanted a stent in the left main coronary artery and performed right external iliac-left femoral arterial bypass under general anesthesia. We performed a conventional total arch replacement and frozen elephant trunk and mitral valve repair at day 16. His postoperative course was good. Implantation of a left main trunk stent is an effective strategy for Stanford type A acute aortic dissection with left main coronary arterial occlusion before surgical repair.
    MeSH term(s) Aneurysm, Dissecting/complications ; Aneurysm, Dissecting/diagnostic imaging ; Aneurysm, Dissecting/surgery ; Aortic Aneurysm/surgery ; Coronary Vessels/diagnostic imaging ; Coronary Vessels/surgery ; Humans ; Male ; Middle Aged ; Myocardial Infarction/diagnostic imaging ; Myocardial Infarction/etiology ; Myocardial Infarction/surgery ; Stents/adverse effects
    Language Japanese
    Publishing date 2022-08-31
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 603899-2
    ISSN 0021-5252
    ISSN 0021-5252
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article: [Infectious Thoracic Aortic Aneurysm and Purulent Pericarditis due to Staphylococcus aureus:Report of a Case].

    Sato, Taiki / Okamoto, Yuki / Yamamoto, Kazuo / Mizuochi, Rie / Yamamoto, Soshi / Takahashi, Satoshi / Asami, Fuyuki / Katsu, Masatake / Yoshii, Shinpei

    Kyobu geka. The Japanese journal of thoracic surgery

    2022  Volume 75, Issue 2, Page(s) 146–149

    Abstract: The objective of this case report is to highlight a rare case of infectious thoracic aortic aneurysm and purulent pericarditis simultaneously in a 56-year-old woman. The patient complained of left anterior chest pain and contrast computed tomography (CT) ...

    Abstract The objective of this case report is to highlight a rare case of infectious thoracic aortic aneurysm and purulent pericarditis simultaneously in a 56-year-old woman. The patient complained of left anterior chest pain and contrast computed tomography (CT) revealed infectious thoracic aortic aneurysm and purulent pericarditis accompanied by massive pericardial effusion. She underwent a pericardial drainage immediately, and antibiotic treatment was initiated. Methicillin-sensitive Staphylococcus aureus was detected in blood and pericardial fluid cultures. On day eight of hospitalization, contrast CT scan showed enlargement of the aortic aneurysm. Therefore, total arch replacement was performed on day 10 using rifampicin-soaked graft. After surgery, antibiotic treatment was continued, till inflammatory markers became negative. She was discharged on day 66 without developing anastomotic pseudoaneurysms nor constrictive pericarditis.
    MeSH term(s) Aortic Aneurysm, Thoracic/complications ; Aortic Aneurysm, Thoracic/diagnostic imaging ; Aortic Aneurysm, Thoracic/surgery ; Female ; Humans ; Middle Aged ; Pericardial Effusion/complications ; Pericarditis/complications ; Pericarditis/diagnostic imaging ; Pericarditis/surgery ; Staphylococcal Infections ; Staphylococcus aureus
    Language Japanese
    Publishing date 2022-03-06
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 603899-2
    ISSN 0021-5252
    ISSN 0021-5252
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Early and Late Outcomes of Aortic Valve Replacement with Aortic Annular Enlargement: A Propensity Analysis.

    Okamoto, Yuki / Yamamoto, Kazuo / Sugimoto, Tsutomu / Yoshii, Shinpei

    The Thoracic and cardiovascular surgeon

    2016  Volume 64, Issue 5, Page(s) 410–417

    Abstract: Objectives Early and late outcomes were evaluated in Japanese patients undergoing aortic valve replacement (AVR) with or without aortic annular enlargement (AAE). Propensity matching adjusted for baseline differences in this study. Methods Between ... ...

    Abstract Objectives Early and late outcomes were evaluated in Japanese patients undergoing aortic valve replacement (AVR) with or without aortic annular enlargement (AAE). Propensity matching adjusted for baseline differences in this study. Methods Between January 2001 and July 2014, 589 patients underwent AVR for aortic stenosis. Of these, 58 patients received AVR with AAE (AAE group), and the others received standard AVR without annular enlargement (sAVR group). Of these 589 patients, 116 patients were selected using propensity score matching analysis. We compared early and late outcomes between the two groups. Results Compared with the sAVR group, cardiopulmonary bypass time (177 ± 42 vs. 157 ± 39 minutes) and aortic cross-clamp time (126 ± 32 vs. 110 ± 34 minutes) were significantly longer in the AAE group. However, there were no significant differences between the AAE group and the sAVR group in 30-day mortality (1.7 vs. 3.4%) and in-hospital mortality (1.7 vs. 3.4%). There was no severe patient-prosthesis mismatch after AVR in the AAE group. The overall survival rate and freedom from cardiac events in the AAE group and in the sAVR group at 10 years were 92.4 versus 75.9% (p = 0.477) and 89.5 versus 82.8% (p = 0.076), respectively. No differences were found between the two groups. Conclusions AAE was performed safely in Japanese patients with small aortic annulus. Surgical outcomes of the AAE group were not inferior to those of sAVR. Using this technique, which did not require advanced skills, it was easy to avoid severe patient-prosthesis mismatch.
    MeSH term(s) Aged ; Aged, 80 and over ; Aortic Valve/diagnostic imaging ; Aortic Valve/physiopathology ; Aortic Valve/surgery ; Aortic Valve Stenosis/diagnostic imaging ; Aortic Valve Stenosis/mortality ; Aortic Valve Stenosis/physiopathology ; Aortic Valve Stenosis/surgery ; Chi-Square Distribution ; Female ; Heart Valve Prosthesis ; Heart Valve Prosthesis Implantation/adverse effects ; Heart Valve Prosthesis Implantation/instrumentation ; Heart Valve Prosthesis Implantation/mortality ; Hospital Mortality ; Humans ; Japan ; Kaplan-Meier Estimate ; Male ; Middle Aged ; Operative Time ; Postoperative Complications/etiology ; Postoperative Complications/mortality ; Propensity Score ; Prosthesis Design ; Retrospective Studies ; Risk Factors ; Time Factors ; Treatment Outcome
    Language English
    Publishing date 2016-08
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 800050-5
    ISSN 1439-1902 ; 0171-6425 ; 0946-4778 ; 0172-6137
    ISSN (online) 1439-1902
    ISSN 0171-6425 ; 0946-4778 ; 0172-6137
    DOI 10.1055/s-0035-1563669
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Early and Late Outcomes of Aortic Valve Replacement Using Bioprosthetic Versus Mechanical Valve in Elderly Patients: A Propensity Analysis.

    Okamoto, Yuki / Yamamoto, Kazuo / Yoshii, Shinpei

    Journal of cardiac surgery

    2016  Volume 31, Issue 4, Page(s) 195–202

    Abstract: Background and aim of the study: There is still controversy on the use of mechanical valves to treat elderly patients with a small aortic annulus who require aortic valve replacement (AVR). We compared our results in elderly patients who underwent AVR ... ...

    Abstract Background and aim of the study: There is still controversy on the use of mechanical valves to treat elderly patients with a small aortic annulus who require aortic valve replacement (AVR). We compared our results in elderly patients who underwent AVR with a bioprosthetic or mechanical valve. Propensity matching adjusted for baseline differences in this study.
    Methods: Between January 2001 and July 2014, 277 patients aged ≥75 years old who underwent AVR were enrolled. Of 277 patients, 104 patients were selected using propensity score matching analysis. Out of this cohort, 52 patients underwent AVR with a bioprosthetic valve (B group) and the remainder AVR with a mechanical valve (M group).
    Results: There were no significant differences between the B and M groups in 30 days mortality (1.9% vs. 5.8%, p = 0.618). The incidence of patient-prosthesis mismatch (PPM) after AVR tended to be lower in the M group than in the B group. The overall survival rates in the B and M groups at eight years were 72.8% and 73.3%, respectively (p = 0.473). No significant differences between the two groups were observed in freedom from valve-related death, cardiac events, bleeding events, or stroke events.
    Conclusions: AVR in elderly patients achieved relatively good short-term and long-term outcomes, and the incidence rates of valve-related complications after using a mechanical valve were low. In a selected population of elderly patients, a mechanical valve may be acceptable. doi: 10.1111/jocs.12719 (J Card Surg 2016;31:195-202).
    MeSH term(s) Aged ; Aged, 80 and over ; Aortic Valve/surgery ; Bioprosthesis ; Cohort Studies ; Female ; Heart Valve Prosthesis ; Heart Valve Prosthesis Implantation/methods ; Heart Valve Prosthesis Implantation/mortality ; Humans ; Incidence ; Male ; Postoperative Complications/epidemiology ; Propensity Score ; Survival Rate ; Time Factors ; Treatment Outcome
    Language English
    Publishing date 2016-04
    Publishing country United States
    Document type Journal Article
    ZDB-ID 639059-6
    ISSN 1540-8191 ; 0886-0440
    ISSN (online) 1540-8191
    ISSN 0886-0440
    DOI 10.1111/jocs.12719
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Aortic fibrosarcoma presenting as rupture of an abdominal aortic aneurysm.

    Kato, Kaori / Yamamoto, Kazuo / Yoshii, Shinpei / Suzuki, Toshimitsu

    Journal of vascular surgery

    2015  Volume 61, Issue 4, Page(s) 1066

    MeSH term(s) Aorta, Abdominal/pathology ; Aorta, Abdominal/physiopathology ; Aorta, Abdominal/surgery ; Aortic Aneurysm, Abdominal/diagnosis ; Aortic Aneurysm, Abdominal/etiology ; Aortic Aneurysm, Abdominal/surgery ; Aortic Rupture/diagnosis ; Aortic Rupture/etiology ; Aortic Rupture/surgery ; Aortography/methods ; Biopsy ; Chemoradiotherapy, Adjuvant ; Dilatation, Pathologic ; Fibrosarcoma/complications ; Fibrosarcoma/diagnosis ; Fibrosarcoma/surgery ; Humans ; Male ; Middle Aged ; Predictive Value of Tests ; Tomography, X-Ray Computed ; Treatment Outcome ; Vascular Neoplasms/complications ; Vascular Neoplasms/diagnosis ; Vascular Neoplasms/surgery
    Language English
    Publishing date 2015-04
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 605700-7
    ISSN 1097-6809 ; 0741-5214
    ISSN (online) 1097-6809
    ISSN 0741-5214
    DOI 10.1016/j.jvs.2014.05.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Early and late outcomes of AVR with aortic annular enlargement in octogenarian.

    Okamoto, Yuki / Yamamoto, Kazuo / Sugimoto, Tsutomu / Yoshii, Shinpei

    General thoracic and cardiovascular surgery

    2015  Volume 63, Issue 8, Page(s) 453–458

    Abstract: Objective: There is no clear consensus on the procedures for octogenarians with a small aortic annulus who require aortic valve replacement (AVR). We evaluated surgical results in octogenarians who underwent AVR with aortic annular enlargement, Nicks ... ...

    Abstract Objective: There is no clear consensus on the procedures for octogenarians with a small aortic annulus who require aortic valve replacement (AVR). We evaluated surgical results in octogenarians who underwent AVR with aortic annular enlargement, Nicks procedure, for aortic stenosis with a small aortic annulus.
    Methods: Between January 2001 and March 2014, 131 octogenarian patients were treated at our institution. Nineteen patients received AVR with aortic annular enlargement (AAE group), and the others received standard AVR without annular enlargement (sAVR group). We compared early and late outcomes between the two groups.
    Results: There were no significant differences in early complications between the groups. The rates for use of a mechanical valve (32 vs 22 %, p = 0.590), in-hospital mortality (5.3 vs 5.4 %, p = 1.000), and severe patient-prosthesis mismatch (PPM) (0 vs 6.3 %, p = 0.593) were also similar between the AAE and sAVR group. In the AAE group, there was no cardiac-related death, bleeding event, thromboembolism, or stroke during the follow-up period (mean 37.6 months). The rates of freedom from cardiac events at 8 years were 94 % in the AAE group and 57 % in the sAVR group (p = 0.292). The overall survival rates at 8 years were 77 % in the AAE group and 77 % in sAVR group (p = 0.462). There were no significant differences in these rates between the groups.
    Conclusion: AVR with aortic annular enlargement in octogenarians with small aortic annulus was safe and led to good operative and long-term outcomes.
    MeSH term(s) Aged, 80 and over ; Aortic Valve/surgery ; Aortic Valve Stenosis/mortality ; Aortic Valve Stenosis/surgery ; Cardiopulmonary Bypass/methods ; Cardiopulmonary Bypass/mortality ; Female ; Heart Valve Prosthesis ; Heart Valve Prosthesis Implantation/methods ; Heart Valve Prosthesis Implantation/mortality ; Hospital Mortality ; Humans ; Kaplan-Meier Estimate ; Male ; Postoperative Complications/etiology ; Reoperation ; Retrospective Studies ; Treatment Outcome
    Language English
    Publishing date 2015-08
    Publishing country Japan
    Document type Comparative Study ; Journal Article
    ZDB-ID 2376888-5
    ISSN 1863-6713 ; 1863-6705
    ISSN (online) 1863-6713
    ISSN 1863-6705
    DOI 10.1007/s11748-015-0559-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Abnormal mitral valve chorda.

    Okamoto, Yuki / Yamamoto, Kazuo / Sugimoto, Tsutomu / Yoshii, Shinpei

    Circulation journal : official journal of the Japanese Circulation Society

    2013  Volume 78, Issue 2, Page(s) 505–506

    MeSH term(s) Heart Valve Diseases/diagnostic imaging ; Heart Valve Diseases/surgery ; Humans ; Male ; Middle Aged ; Mitral Valve/abnormalities ; Mitral Valve/diagnostic imaging ; Mitral Valve/surgery ; Ultrasonography
    Language English
    Publishing date 2013-10-26
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 2068090-9
    ISSN 1347-4820 ; 1346-9843
    ISSN (online) 1347-4820
    ISSN 1346-9843
    DOI 10.1253/circj.cj-13-1012
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top