Purpose: To study the significance of impaired positive peak rate of left ventricular (LV) pressure development (MR + dp/dt) and global systolic strain (GLPSS) values in patients presented with significant mitral inco...Purpose: To study the significance of impaired positive peak rate of left ventricular (LV) pressure development (MR + dp/dt) and global systolic strain (GLPSS) values in patients presented with significant mitral incompetence (MR) in coronary artery disease (CAD) and early dilated cardiomyopathy (DCM) with normal ejection fraction (EF). Methods: A description of LV contractile behavior requires measurement of the ability of the ventricle to develop force (pressure) and to shorten. Hence, performance of the ventricle as a pump assessed in the present study by measuring the pressure developed by the ventricle (Left ventricular +dP/dt is estimated from MR jet as the rate of pressure rise from 1 to 3 m/sec) and shortening assessed by GLPSS (this Doppler technology allowed measurement of LV systolic strain for the entire length of LV myocardium). GLPSS and MR + dp/dt were calculated in 30 consecutive patients (mean age was 55 ± 12 years) characterized by echocardiographic evidence of moderate or severe MR (in CAD and DCM patients) and normal EF (mean LV Ejection Fraction of 50.9% ± 5.9%) and compared with those obtained in 35 consecutive controls (age 54.7 ± 11.4 years) with normal echocardiographic study of the heart. Results: The mean values of MR +dp/dt and GLPSS averaged from the 3 apical views, differed significantly in DCM and CAD patients (characterized by significant MR with normal EF) compared with control group, (MR + dp/dt = 733 ± 170 mmhg/s and GLPSS –13% ± 1.3%) versus (1420 ± 210 mmhg/s and -19.5% ± 3.3%) for patients versus control, respectively, p < 0.001. A depressed values of MR + dp/dt were highly correlated with GLPSS values in patients with CAD and DCM, r = 0.78. The combined use of 2D Strain (<-13%) and MR dp/dt (<900 mmhg/s) in the presence of MR (grade II or more) had 89% sensitivity and 92% specificity for detection of patients at risk of post-operative major cardiac events after MR and coronary artery bypass surgery. Conclusions: Latent LV systolic dysfunction could be defined noninv展开更多
目的研究合并巨大左心室的二尖瓣、主动脉瓣关闭不全患者行外科手术治疗后的中远期生存及心脏结构和功能变化。方法自2000年1月-2012年12月,本院完成合并巨大左心室的二尖瓣、主动脉瓣关闭不全手术共计41例,其中男性35例,女性6例,年龄22...目的研究合并巨大左心室的二尖瓣、主动脉瓣关闭不全患者行外科手术治疗后的中远期生存及心脏结构和功能变化。方法自2000年1月-2012年12月,本院完成合并巨大左心室的二尖瓣、主动脉瓣关闭不全手术共计41例,其中男性35例,女性6例,年龄22~74（46.0±12.9）岁。术前心功能分级：纽约心脏病协会（New York Heart Association,NYHA）分级Ⅰ级2例,NYHAⅡ级7例,NYHAⅢ级23例,NYHAⅣ级9例。病程0.5~40（17.6±12.1）年。超声心动图示左心室舒张末期内径（left ventricular end diastolic diameter,LVEDD）为65.0~99.0（75.9±9.2）mm,左心室收缩末期内径（left ventricular end systolic diameter,LVESD）为40.0~76.0（52.1±10.2）mm,射血分数（ejection fraction,EF）为23.0%~70.0%（51.1±10.9）%。结果 41例中,围术期死亡1例（2.43%）,与术前相比,术后2周心脏超声示左心室舒张末期内径减小为（60.8±9.9）mm（P〈0.05）。至2014年12月,32例（80%）得到随访,随访时间23~180（95.9±47.3）个月,存活30例（93.75%）,5例心功能Ⅰ级,19例心功能Ⅱ级,4例心脏功能Ⅲ级,2例心功能Ⅳ级。随访期间死亡2例（6.7%）,失访8例（20%）。因心脏原因死亡者1例,为慢性心功能不全。非心脏原因死亡者为脑卒中。存活患者LVEDD进一步减小,达（52.8±8.7）mm,与术后围术期LVEDD相比有明显缩小（P〈0.05）。结论对于合并巨大左心室的二尖瓣、主动脉瓣关闭不全患者,外科手术可改善左心室功能并使左心室进一步缩小。展开更多
文摘Purpose: To study the significance of impaired positive peak rate of left ventricular (LV) pressure development (MR + dp/dt) and global systolic strain (GLPSS) values in patients presented with significant mitral incompetence (MR) in coronary artery disease (CAD) and early dilated cardiomyopathy (DCM) with normal ejection fraction (EF). Methods: A description of LV contractile behavior requires measurement of the ability of the ventricle to develop force (pressure) and to shorten. Hence, performance of the ventricle as a pump assessed in the present study by measuring the pressure developed by the ventricle (Left ventricular +dP/dt is estimated from MR jet as the rate of pressure rise from 1 to 3 m/sec) and shortening assessed by GLPSS (this Doppler technology allowed measurement of LV systolic strain for the entire length of LV myocardium). GLPSS and MR + dp/dt were calculated in 30 consecutive patients (mean age was 55 ± 12 years) characterized by echocardiographic evidence of moderate or severe MR (in CAD and DCM patients) and normal EF (mean LV Ejection Fraction of 50.9% ± 5.9%) and compared with those obtained in 35 consecutive controls (age 54.7 ± 11.4 years) with normal echocardiographic study of the heart. Results: The mean values of MR +dp/dt and GLPSS averaged from the 3 apical views, differed significantly in DCM and CAD patients (characterized by significant MR with normal EF) compared with control group, (MR + dp/dt = 733 ± 170 mmhg/s and GLPSS –13% ± 1.3%) versus (1420 ± 210 mmhg/s and -19.5% ± 3.3%) for patients versus control, respectively, p < 0.001. A depressed values of MR + dp/dt were highly correlated with GLPSS values in patients with CAD and DCM, r = 0.78. The combined use of 2D Strain (<-13%) and MR dp/dt (<900 mmhg/s) in the presence of MR (grade II or more) had 89% sensitivity and 92% specificity for detection of patients at risk of post-operative major cardiac events after MR and coronary artery bypass surgery. Conclusions: Latent LV systolic dysfunction could be defined noninv
文摘目的研究合并巨大左心室的二尖瓣、主动脉瓣关闭不全患者行外科手术治疗后的中远期生存及心脏结构和功能变化。方法自2000年1月-2012年12月,本院完成合并巨大左心室的二尖瓣、主动脉瓣关闭不全手术共计41例,其中男性35例,女性6例,年龄22~74（46.0±12.9）岁。术前心功能分级：纽约心脏病协会（New York Heart Association,NYHA）分级Ⅰ级2例,NYHAⅡ级7例,NYHAⅢ级23例,NYHAⅣ级9例。病程0.5~40（17.6±12.1）年。超声心动图示左心室舒张末期内径（left ventricular end diastolic diameter,LVEDD）为65.0~99.0（75.9±9.2）mm,左心室收缩末期内径（left ventricular end systolic diameter,LVESD）为40.0~76.0（52.1±10.2）mm,射血分数（ejection fraction,EF）为23.0%~70.0%（51.1±10.9）%。结果 41例中,围术期死亡1例（2.43%）,与术前相比,术后2周心脏超声示左心室舒张末期内径减小为（60.8±9.9）mm（P〈0.05）。至2014年12月,32例（80%）得到随访,随访时间23~180（95.9±47.3）个月,存活30例（93.75%）,5例心功能Ⅰ级,19例心功能Ⅱ级,4例心脏功能Ⅲ级,2例心功能Ⅳ级。随访期间死亡2例（6.7%）,失访8例（20%）。因心脏原因死亡者1例,为慢性心功能不全。非心脏原因死亡者为脑卒中。存活患者LVEDD进一步减小,达（52.8±8.7）mm,与术后围术期LVEDD相比有明显缩小（P〈0.05）。结论对于合并巨大左心室的二尖瓣、主动脉瓣关闭不全患者,外科手术可改善左心室功能并使左心室进一步缩小。
