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  • SAGE Publications  (3)
  • Kowatari, Ryosuke  (3)
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  • SAGE Publications  (3)
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  • 1
    Online Resource
    Online Resource
    Simple Endovascular Repair for Symptomatic Aberrant Right Subclavian Artery in a Debilitated Patient
    SAGE Publications ; 2019
    In:  Vascular and Endovascular Surgery Vol. 53, No. 2 ( 2019-02), p. 154-156
    Details
    In: Vascular and Endovascular Surgery, SAGE Publications, Vol. 53, No. 2 ( 2019-02), p. 154-156
    Abstract: We report a simple endovascular repair for symptomatic aberrant right subclavian artery (ARSA) in an 11-year-old girl. She had undergone tracheostomy due to hypoxic encephalopathy after cardiac surgery and suffered from dyspnea. Computed tomography revealed tracheal stenosis caused by a vascular ring made with an ARSA and the right common carotid artery. Transcatheter ARSA embolization using an Amplatzer vascular plug and coils was performed. Symptoms improved within a few days after this intervention and no complications such as upper extremity ischemia were encountered. Computed tomography showed the ARSA around the trachea had reduced in size and tracheal stenosis was improved.
    Type of Medium: Online Resource
    ISSN: 1538-5744 , 1938-9116
    URL: Article
    DOI: 10.1177/1538574418805221
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
    detail.hit.zdb_id: 2095223-5
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  • 2
    Online Resource
    Online Resource
    Directing a dispersion cannula tip toward the aortic root during thoracic aortic arch surgery does not adversely affect cardiac function
    SAGE Publications ; 2022
    In:  Perfusion Vol. 37, No. 6 ( 2022-09), p. 598-604
    Details
    In: Perfusion, SAGE Publications, Vol. 37, No. 6 ( 2022-09), p. 598-604
    Abstract: Neurologic complications of open thoracic aortic surgery are devastating problems in patients with severely diseased aortas. This study aimed to clarify whether directing the aortic cannula tip toward the aortic root affects the postoperative cardiac function in patients undergoing open thoracic aortic surgery. Methods: A total of 16 patients who underwent total or partial arch replacement between January 2014 and April 2019 were enrolled and divided into two groups. Ascending aorta perfusion was performed by placing the cannula tip toward the aortic root (reversed direction group, seven patients) or toward the aortic arch (standard direction group, nine patients). Intraoperative and perioperative data, including mortality, morbidity, and postoperative cardiac function, were compared between the groups. Results: There were no hospital deaths or stroke events in either group. The aortic cross-clamping time was 102.4 ± 20.3 minutes in the reversed direction group and 87.1 ± 9.9 minutes in the standard direction group (p = 0.049). Furthermore, the intubation time was 28.4 ± 12.9 hours in the reversed direction group and 12.4 ± 6.8 hours in the standard direction group (p = 0.022). Both times were significantly longer in the reverse direction group. Postoperative serum creatine kinase-MB levels were significantly lower in the reversed direction group (6.2 ± 3.3 U/L vs 13.3 ± 4.8 U/L, respectively, p = 0.006). The cardiac output and cardiac index did not significantly differ. Conclusions: Directing the aortic cannula tip toward the aortic root does not adversely affect the postoperative cardiac function after aortic arch surgery.
    Type of Medium: Online Resource
    ISSN: 0267-6591 , 1477-111X
    URL: Article
    DOI: 10.1177/02676591211014816
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2029611-3
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  • 3
    Online Resource
    Online Resource
    Direct Epicardial Assist Device using Artificial Rubber Muscle in a Swine Model of Pediatric Dilated Cardiomyopathy
    SAGE Publications ; 2015
    In:  The International Journal of Artificial Organs Vol. 38, No. 11 ( 2015-11), p. 588-594
    Details
    In: The International Journal of Artificial Organs, SAGE Publications, Vol. 38, No. 11 ( 2015-11), p. 588-594
    Abstract: Ventricular assist devices are a potent alternative or bridge therapy to heart transplants for dilated cardiomyopathy patients. However, ventricular assist devices have problems related to biocompatibility, hemocompatibility, and thromboembolic events, especially in younger patients. The present study examined the hemodynamic effects of a direct cardiac compression device using circumferential artificial rubber muscles in a young swine model of dilated cardiomyopathy. Methods Dilated cardiomyopathy was established in 6 pigs ( 6 – 8 weeks of rapid right ventricular pacing; average weight, 22.6 ± 2.1 kg). The device was designed using pneumatic rubber muscles (Fluidic Muscle, Festo). Hemodynamic parameters were monitored under baseline conditions, after the assistance, and after inducing ventricular fibrillation. Hemodynamic data were acquired using a PiCCO, multilumened thermodilution catheter in the pulmonary artery, left ventricular pressure monitoring, and epicardial echocardiography. Results Direct epicardial assistance resulted in a significant improvement in hemodynamic data. Cardiac output improved from 1.39 ± 0.24 L/min to 1.96 ± 0.46 (p = 0.02). Stroke volume (14.5 ± 3.2 mL versus 20.1 ± 4.3 ml, p 〈 0.01) and ejection fraction (25.2 ± 3.6% versus 47.7 ± 7.8%, p 〈 0.01) also improved after assistance. After inducing ventricular fibrillation, cardiac output was maintained at 1.33 ± 0.28 L/min. Conclusions Use of a circumferential direct epicardial assistant device resulted in improvement in hemodynamic data in a dilated cardiomyopathy model. Although there is still a need for improvements in device components, the direct cardiac assist device may be a good alternative to recent heart failure device therapies.
    Type of Medium: Online Resource
    ISSN: 0391-3988 , 1724-6040
    URL: Article
    DOI: 10.5301/ijao.5000447
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2015
    detail.hit.zdb_id: 1474999-3
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