The Experts below are selected from a list of 216 Experts worldwide ranked by ideXlab platform

Kiyoshi Yoshida - One of the best experts on this subject based on the ideXlab platform.

  • Uncommon anomalous papillary muscle/Chordae Tendineae incidentally found in patient with transient ischaemic attack
    Heart, 2005
    Co-Authors: N Watanabe, N Wada, Kiyoshi Yoshida
    Abstract:

    Anomalies of mitral subvalvar apparatus include various types of anomalies of papillary muscles and Chordae Tendineae. Direct insertion into the anterior mitral leaflet and fusion to the ventricular septum of the anomalous papillary muscle or Chordae Tendineae are common types of these anomalies. Anomalous papillary muscles or Chordae, especially those that are inserted directly into the mitral leaflets, play a role in augmenting left ventricular outflow …

  • uncommon anomalous papillary muscle Chordae Tendineae incidentally found in patient with transient ischaemic attack
    Heart, 2005
    Co-Authors: N Watanabe, N Wada, Kiyoshi Yoshida
    Abstract:

    Anomalies of mitral subvalvar apparatus include various types of anomalies of papillary muscles and Chordae Tendineae. Direct insertion into the anterior mitral leaflet and fusion to the ventricular septum of the anomalous papillary muscle or Chordae Tendineae are common types of these anomalies. Anomalous papillary muscles or Chordae, especially those that are inserted directly into the mitral leaflets, play a role in augmenting left ventricular outflow …

  • direct visualization of ruptured Chordae Tendineae by transesophageal two dimensional echocardiography
    Journal of the American College of Cardiology, 1990
    Co-Authors: Takeshi Hozumi, Junichi Yoshikawa, Kiyoshi Yoshida, Yasuko Yamaura, Takashi Akasaka, M Shakudo
    Abstract:

    Abstract To determine the value of transesophageal echocardiography in the detection of ruptured Chordae Tendineae, 28 patients who had surgical therapy for pure mitral regurgitation were evaluated prospectively by conventional transthoracic and transesophageal two-dimensional echocardiography. Seventeen patients (Group I) had ruptured Chordae Tendineae and 11 (Group II) had intact Chordae Tendineae. Transthoracic echocardiography detected ruptured Chordae Tendineae in 6 patients from Group I (sensitivity 35%) and flail leaflets in 11 patients from Group I (sensitivity 65%). Transesophageal echocardiography disclosed ruptured Chordae Tendineae in all 17 Group I patients (sensitivity 100%); the sensitivity was significantly higher than that of transthoracic echocardiography. No abnormal chordal echoes were visualized in any patient from Group II by either transthoracic or transesophageal echocardiography (specificity 100%). Transesophageal echocardiography is a highly sensitive method for detecting ruptured Chordae Tendineae and is superior to transthoracic echocardiography in establishing its diagnosis.

Jong-won Ha - One of the best experts on this subject based on the ideXlab platform.

  • high prevalence of unrecognized Chordae Tendineae rupture in mitral valve prolapse patients undergoing valve replacement surgery
    Canadian Journal of Cardiology, 2013
    Co-Authors: Hee Tae Yu, Woo-in Yang, Chi Young Shim, Byung-chul Chang, Geu-ru Hong, Jeonggeun Moon, Jong-won Ha
    Abstract:

    Abstract Background Not infrequently, Chordae Tendineae rupture, which was not recognized preoperatively using echocardiography, was found during mitral valve (MV) surgery in patients with severe mitral regurgitation (MR) diagnosed with MV prolapse. We evaluated the incidence and predictors of echocardiographically-unrecognized Chordae Tendineae rupture in patients with severe MR because of MV prolapse. Methods We enrolled 124 patients undergoing MV surgery for severe MR because of nonrheumatic MV prolapse. Patients with MR because of infective endocarditis, ischemic heart disease, or echocardiographically-detected chordal rupture were excluded. The study sample was divided into 2 groups: surgically-proven Chordae Tendineae rupture (n = 51), and no Chordae rupture (n = 73). Results Echocardiographically-unrecognized Chordae Tendineae rupture was found in 51 (41%) of 124 patients undergoing MV surgery because of MR. It was more common in patients with posterior or single-leaflet prolapse. Although the severity of MR was greater in patients with chordal rupture, left atrial volume index was smaller compared with those without. In a multivariate analysis, involvement of posterior leaflet (odds ratio [OR], 2.80; 95% confidence interval [CI], 1.15-6.84) or single leaflet (OR, 3.18; 95% CI, 1.07-9.45), MR severity (OR, 4.76; 95% CI, 1.96-11.59), and left atrial volume index (OR, 0.98; 95% CI, 0.96-0.99) were independently associated with chordal rupture ( P Conclusions Unrecognized Chordae Tendineae rupture is a common unrecognized contributor to severe MR necessitating valve replacement in MV prolapse patients. Earlier recognition and more specific management might contribute to improved prognosis for such patients.

  • Clinical Research High Prevalence of Unrecognized Chordae Tendineae Rupture in Mitral Valve Prolapse Patients Undergoing Valve Replacement Surgery
    2013
    Co-Authors: Hee Tae Yu, Woo-in Yang, Chi Young Shim, Byung-chul Chang, Geu-ru Hong, Jong-won Ha
    Abstract:

    Background: Not infrequently, Chordae Tendineae rupture, which was not recognized preoperatively using echocardiography, was found during mitral valve (MV) surgery in patients with severe mitral regurgitation (MR) diagnosed with MV prolapse. We evaluated the incidence and predictors of echocardiographically-unrecognized Chordae Tendineae rupture in patients with severe MR because of MV prolapse. Methods: We enrolled 124 patients undergoing MV surgery for severe MR because of nonrheumatic MV prolapse. Patients with MR because of infective endocarditis, ischemic heart disease, or echocardiographicallydetected chordal rupture were excluded. The study sample was divided into 2 groups: surgically-proven Chordae Tendineae rupture (n ¼ 51), and no Chordae rupture (n ¼ 73). Results: Echocardiographically-unrecognized Chordae Tendineae rupture was found in 51 (41%) of 124 patients undergoing MV surgery because of MR. It was more common in patients with posterior or single-leaflet prolapse. Although the severity of MR was greater in patients with chordal rupture, left atrial volume index was smaller

Hee Tae Yu - One of the best experts on this subject based on the ideXlab platform.

  • high prevalence of unrecognized Chordae Tendineae rupture in mitral valve prolapse patients undergoing valve replacement surgery
    Canadian Journal of Cardiology, 2013
    Co-Authors: Hee Tae Yu, Woo-in Yang, Chi Young Shim, Byung-chul Chang, Geu-ru Hong, Jeonggeun Moon, Jong-won Ha
    Abstract:

    Abstract Background Not infrequently, Chordae Tendineae rupture, which was not recognized preoperatively using echocardiography, was found during mitral valve (MV) surgery in patients with severe mitral regurgitation (MR) diagnosed with MV prolapse. We evaluated the incidence and predictors of echocardiographically-unrecognized Chordae Tendineae rupture in patients with severe MR because of MV prolapse. Methods We enrolled 124 patients undergoing MV surgery for severe MR because of nonrheumatic MV prolapse. Patients with MR because of infective endocarditis, ischemic heart disease, or echocardiographically-detected chordal rupture were excluded. The study sample was divided into 2 groups: surgically-proven Chordae Tendineae rupture (n = 51), and no Chordae rupture (n = 73). Results Echocardiographically-unrecognized Chordae Tendineae rupture was found in 51 (41%) of 124 patients undergoing MV surgery because of MR. It was more common in patients with posterior or single-leaflet prolapse. Although the severity of MR was greater in patients with chordal rupture, left atrial volume index was smaller compared with those without. In a multivariate analysis, involvement of posterior leaflet (odds ratio [OR], 2.80; 95% confidence interval [CI], 1.15-6.84) or single leaflet (OR, 3.18; 95% CI, 1.07-9.45), MR severity (OR, 4.76; 95% CI, 1.96-11.59), and left atrial volume index (OR, 0.98; 95% CI, 0.96-0.99) were independently associated with chordal rupture ( P Conclusions Unrecognized Chordae Tendineae rupture is a common unrecognized contributor to severe MR necessitating valve replacement in MV prolapse patients. Earlier recognition and more specific management might contribute to improved prognosis for such patients.

  • Clinical Research High Prevalence of Unrecognized Chordae Tendineae Rupture in Mitral Valve Prolapse Patients Undergoing Valve Replacement Surgery
    2013
    Co-Authors: Hee Tae Yu, Woo-in Yang, Chi Young Shim, Byung-chul Chang, Geu-ru Hong, Jong-won Ha
    Abstract:

    Background: Not infrequently, Chordae Tendineae rupture, which was not recognized preoperatively using echocardiography, was found during mitral valve (MV) surgery in patients with severe mitral regurgitation (MR) diagnosed with MV prolapse. We evaluated the incidence and predictors of echocardiographically-unrecognized Chordae Tendineae rupture in patients with severe MR because of MV prolapse. Methods: We enrolled 124 patients undergoing MV surgery for severe MR because of nonrheumatic MV prolapse. Patients with MR because of infective endocarditis, ischemic heart disease, or echocardiographicallydetected chordal rupture were excluded. The study sample was divided into 2 groups: surgically-proven Chordae Tendineae rupture (n ¼ 51), and no Chordae rupture (n ¼ 73). Results: Echocardiographically-unrecognized Chordae Tendineae rupture was found in 51 (41%) of 124 patients undergoing MV surgery because of MR. It was more common in patients with posterior or single-leaflet prolapse. Although the severity of MR was greater in patients with chordal rupture, left atrial volume index was smaller

N Watanabe - One of the best experts on this subject based on the ideXlab platform.

Yoshihiko Ikeda - One of the best experts on this subject based on the ideXlab platform.

  • acute rupture of Chordae Tendineae of the mitral valve in infants
    Circulation, 2014
    Co-Authors: Isao Shiraishi, Kenichi Kurosaki, Kunihiro Nishimura, Heima Sakaguchi, Masataka Kitano, Hitoshi Kato, Toshio Nakanishi, Hiroyuki Yamagishi, Koichi Sagawa, Yoshihiko Ikeda
    Abstract:

    Background—Recently, infant cases of acute heart failure attributable to rupture of the mitral Chordae Tendineae have been reported. However, little is known about the pathogenesis and clinical cou...

  • acute rupture of Chordae Tendineae of the mitral valve in infantsclinical perspective
    Circulation, 2014
    Co-Authors: Isao Shiraishi, Kenichi Kurosaki, Kunihiro Nishimura, Heima Sakaguchi, Masataka Kitano, Hitoshi Kato, Toshio Nakanishi, Hiroyuki Yamagishi, Koichi Sagawa, Yoshihiko Ikeda
    Abstract:

    Background— Recently, infant cases of acute heart failure attributable to rupture of the mitral Chordae Tendineae have been reported. However, little is known about the pathogenesis and clinical course of this condition. Methods and Results— Ninety-five children with rupture of mitral Chordae Tendineae were identified in nationwide surveys of Japan diagnosed from 1995 to 2013. The clinical manifestations, management strategies, and prognosis were investigated. Eighty-one (85%) patients were between 4 and 6 months (median, 5 months) of age. In 63 (66%) patients, rupture occurred during the spring or summer. The underlying conditions before rupture included Kawasaki disease (10 cases), maternally derived anti-SSA antibodies (2 cases), and infective endocarditis (1 case). Surgery was performed in 80 patients (94 operations), and the final operations included plasty of mitral Chordae in 52 cases and mechanical valve replacement in 26 cases. The histopathologic examinations of the mitral valves and Chordae (n=28) revealed inflammatory reactions with predominant mononuclear cell infiltration in 18 cases (64%) and increased fibrous and myxoid tissue in 11 cases (39%), suggesting that nonbacterial infectious or autoimmune endocarditis and myxoid changes are involved in the pathogenesis. Eight patients (8.4%) died before (n=6) and shortly after (n=2) the operation, and significant neurological complications persisted in 10 cases (11%). Conclusions— Acute heart failure attributable to rupture of the mitral Chordae Tendineae in infants is a unique disease resulting from diverse causes. This condition should be recognized as a significant cardiovascular disorder that may cause sudden onset of cardiogenic shock and death in infants. # CLINICAL PERSPECTIVE {#article-title-39}