Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) is characterized by fibro-fatty replacement of the right ventricle.However,the feasibility and significance of myocardial fibrosis detec-ted by delaye...Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) is characterized by fibro-fatty replacement of the right ventricle.However,the feasibility and significance of myocardial fibrosis detec-ted by delayed enhancement (DE) using 3.0T magnetic resonance imaging (MRI) in.ARVD /C is seldomly studied.Methods Twenty-seven consecutive patients were prospectively evaluated for ARVD /C.Magnetic reso-nance imaging was performed on a 3.0T scanner.Ten minutes after intravenous administration of 0.2 mmol /kg of gadodiamide,DE-MRI was obtained.Diagnosis of ARVD /C was based upon the Task Force criteria and in-cluded MRI findings.Results Seventeen(59% ) of 27 patients met the Task Force criteria for ARVD /C.Right ven-tricle DE was found in all (100% ) ARVD /C patients compared with none (0%) of the 10 patients without ARVD /C (P <0.001) .Additional left ventricular DE was found in 8/17 ARVD/C patients while without left ventricular mor-phological and functional abnormalities detected by echocardiography or MRI.Conclusions DE using 3.0T MRI could effectively detect myocardial fibrosis in the right and left ventricular myocardium in ARVD /C patients.Detection of myocardial fibrosis may have an important clinical significance in ARVD/C diagnosis.Histological left ventricle in-volvement may be easily missed by echocardiography.展开更多
目的观察具备起搏模式策略和AV间期延长的策略功能的起搏器(Adapta)的远期临床效果。方法 39例患者随机分组,置入具有自动化功能的Adapta起搏器(实验组,n=20)和其它类型双腔起搏器(对照组,n=19)。并分别在置入前及置入后1,2年进行随访...目的观察具备起搏模式策略和AV间期延长的策略功能的起搏器(Adapta)的远期临床效果。方法 39例患者随机分组,置入具有自动化功能的Adapta起搏器(实验组,n=20)和其它类型双腔起搏器(对照组,n=19)。并分别在置入前及置入后1,2年进行随访。随访中观察两组的右室起搏比例、心功能(纽约心功能分级、血脑钠肽)、左房内径(LAD)、左室舒张末内径(LVEDD)、左室射血分数、持续性心房颤动发生率及生活质量等的变化。结果置入双腔起搏器术后1年及2年,与对照组比较,实验组心室起搏比例均明显降低(38.21%±46.01%vs 92.52%±2.70%;36.22%±73.09%vs 91.78%±7.63%,P均<0.05)。置入术后2年,对照组与实验组及与自身术前比较,LAD,LVEDD增大(LAD:43.11±7.08 mm vs 39.01±3.72 mm,40.02±4.70 mm;LVEDD:53.60±6.91 mm vs 47.71±4.79 mm,46.57±3.99 mm,P均<0.05)。其他指标两组无明显差异。结论起搏器自动化功能可以有效降低心室起搏比例、保护心功能。展开更多
文摘Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) is characterized by fibro-fatty replacement of the right ventricle.However,the feasibility and significance of myocardial fibrosis detec-ted by delayed enhancement (DE) using 3.0T magnetic resonance imaging (MRI) in.ARVD /C is seldomly studied.Methods Twenty-seven consecutive patients were prospectively evaluated for ARVD /C.Magnetic reso-nance imaging was performed on a 3.0T scanner.Ten minutes after intravenous administration of 0.2 mmol /kg of gadodiamide,DE-MRI was obtained.Diagnosis of ARVD /C was based upon the Task Force criteria and in-cluded MRI findings.Results Seventeen(59% ) of 27 patients met the Task Force criteria for ARVD /C.Right ven-tricle DE was found in all (100% ) ARVD /C patients compared with none (0%) of the 10 patients without ARVD /C (P <0.001) .Additional left ventricular DE was found in 8/17 ARVD/C patients while without left ventricular mor-phological and functional abnormalities detected by echocardiography or MRI.Conclusions DE using 3.0T MRI could effectively detect myocardial fibrosis in the right and left ventricular myocardium in ARVD /C patients.Detection of myocardial fibrosis may have an important clinical significance in ARVD/C diagnosis.Histological left ventricle in-volvement may be easily missed by echocardiography.
文摘目的观察具备起搏模式策略和AV间期延长的策略功能的起搏器(Adapta)的远期临床效果。方法 39例患者随机分组,置入具有自动化功能的Adapta起搏器(实验组,n=20)和其它类型双腔起搏器(对照组,n=19)。并分别在置入前及置入后1,2年进行随访。随访中观察两组的右室起搏比例、心功能(纽约心功能分级、血脑钠肽)、左房内径(LAD)、左室舒张末内径(LVEDD)、左室射血分数、持续性心房颤动发生率及生活质量等的变化。结果置入双腔起搏器术后1年及2年,与对照组比较,实验组心室起搏比例均明显降低(38.21%±46.01%vs 92.52%±2.70%;36.22%±73.09%vs 91.78%±7.63%,P均<0.05)。置入术后2年,对照组与实验组及与自身术前比较,LAD,LVEDD增大(LAD:43.11±7.08 mm vs 39.01±3.72 mm,40.02±4.70 mm;LVEDD:53.60±6.91 mm vs 47.71±4.79 mm,46.57±3.99 mm,P均<0.05)。其他指标两组无明显差异。结论起搏器自动化功能可以有效降低心室起搏比例、保护心功能。
