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Mitral Valve Leaflet (mitral + valve_leaflet)

Distribution by Scientific Domains
Medical Sciences100%

Kinds of Mitral Valve Leaflet

  • anterior mitral valve leaflet
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    Selected Abstracts

    Staphylococcus aureus Infective Endocarditis Mimicking a Hydatid Cyst

    ECHOCARDIOGRAPHY, Issue 8 2010
    Jeroen Walpot M.D.
    We report an atypical echocardiographic presentation of Staphylococcus aureus infective endocarditis (IE) of the mitral valve in an octogenarian female. Echocardiography revealed perforation of the anterior mitral valve leaflet (AMVL), with a large cystic mass seemingly attached to the AMVL and surrounded by a thin membranous structure. These images were strongly reminiscent of a hydatid cyst. The significant comorbidity of the patient did not justify an urgent surgical approach, and the patient subsequently expired of cardiogenic and septic shock. Autopsy revealed a large vegetation attached to the interatrial septum in the immediate proximity of the AMVL, without signs of the membranous structure and without pathological evidence for septic embolism. This atypical presentation of IE prompted us to discuss a brief review of intracardiac cystic masses. (Echocardiography 2010;27:E80-E82) [source]

    Necrotizing Vasculitis: A Cause of Aortic Insufficiency and Conduction System Disturbance

    ECHOCARDIOGRAPHY, Issue 7 2003
    Miquel Gómez Pérez M.D.
    Cardiac involvement in vasculitis syndromes is uncommon. We describe a 50-year-old male who presented with progressive dyspnea and myalgies. Echocardiogram revealed significant thickening of aortic root, aortic cusps, and anterior mitral valve leaflet, with severe aortic regurgitation that required aortic valve replacement. Furthermore, this patient suffered progressive atrioventricular block that needed implantation of a pacemaker. The study performed disclosed the presence of necrotizing vasculitis positive for perinuclear antineutrophil cytoplasmic antibody. (ECHOCARDIOGRAPHY, Volume 20, October 2003) [source]

    Usefulness of Intraoperative Real-Time 3D Transesophageal Echocardiography in Cardiac Surgery

    JOURNAL OF CARDIAC SURGERY, Issue 6 2008
    Thierry V. Scohy M.D.
    Methods: Preoperative transthoral echocardiography (TTE) revealed: hypertrophic ventricular septum (TTE:19.3 mm), systolic anterior motion (SAM) not causing obstruction and malcoaptation of the anterior mitral valve leaflet (AMVL), and posterior mitral valve leaflet (PMVL) with severe mitral regurgitation. Results: Intraoperative TEE with a x7-2t MATRIX-array transducer (Philips, Andover, MA, USA) with a transducer frequency of x7,2 t mHz, connected to a iE33 (Philips), shows us that the main mechanism and site of regurgitation was an AMVL cleft. We also measured a 24.3-mm thickness of the ventricular septum and analyzing the 3D full volume acquisition revealed that there was no SAM. Conclusion: Intraoperative RT3DTEE permitted comprehensive 3D viewing of the mitral valve revealing the mechanism of mitral valve regurgitation, SAM, and the exact width of the hypertrophic ventricular septum. [source]

    AAIR Versus DDDR Pacing in the Bradycardia Tachycardia Syndrome: A Prospective, Randomized, Double-blind, Crossover Trial

    PACING AND CLINICAL ELECTROPHYSIOLOGY, Issue 11 2001
    BERNHARD SCHWAAB
    SCHWABB, B., et al.: AAIR Versus DDDR Pacing in the Bradycardia Tachycardia Syndrome: A Prospective, Randomized, Double-blind, Crossover Trial. In 19 patients paced and medicated for bradycardia tachycardia syndrome (BTS), AAIR and DDDR pacing were compared with regard to quality of life (QoL), atrial tachyarrhythmia (AFib), exercise tolerance, and left ventricular (LV) function. Patients had a PQ interval , 240 ms during sinus rhythm, no second or third degree AV block, no bundle branch block, or bifascicular block. In DDDR mode, AV delay was optimized using the aortic time velocity integral. After 3 months, QoL was assessed by questionnaires, patients were investigated by 24-hour Holter, cardiopulmonary exercise testing (CPX) was performed, and LV function was determined by echocardiography. QoL was similar in all dimensions, except dizziness, showing a significantly lower prevalence in AAIR mode. The incidence of AFib was 12 episodes in 2 patients with AAIR versus 22 episodes in 7 patients with DDDR pacing (P = 0.072). In AAIR mode, 164 events of second and third degree AV block were detected in 7 patients (37%) with pauses between 1 and 4 seconds. During CPX, exercise duration and work load were higher in AAIR than in DDDR mode (423 ± 127 vs 402 ± 102 s and 103 ± 31 vs 96 ± 27 Watt, P < 0.05). Oxygen consumption (VO2), was similar in both modes. During echocardiography, only deceleration of early diastolic flow velocity and early diastolic closure rate of the anterior mitral valve leaflet were higher in DDD than in AAI pacing (5.16 ± 1.35 vs 3.56 ± 0.95 m/s2 and 69.2 ± 23 vs 54.1 ± 26 mm/s, P < 0.05). As preferred pacing mode, 11 patients chose DDDR, 8 patients chose AAIR. Hence, AAIR and DDDR pacing seem to be equally effective in BTS patients. In view of a considerable rate of high degree AV block during AAIR pacing, DDDR mode should be preferred for safety reasons. [source]