Background Arrhythmogenic right ventricular cardiomyopathy （ARVC） mainly performs local myocardial abnormal movements and tissue Doppler and spot tracking technique can accurately reflect myocardial movement. Howeve...Background Arrhythmogenic right ventricular cardiomyopathy （ARVC） mainly performs local myocardial abnormal movements and tissue Doppler and spot tracking technique can accurately reflect myocardial movement. However, the technique is still rarely used in research of ARVC. Methods The study enrolled 28 ARVC patients and 28 normal controls. Right ventricular parameters were measured by two-dimensional echocardiography, tissue Doppler imaging, speckle tracking imaging in order to compare the difference between two groups. Results Morphological indices （right ventricular inflow tract inner diameter and right ventricular outflow tract inner diameter） and functional indices （right ventricular peak S＇, right ventricular E＇/ A＇ ratio, tricuspid annular plane systolic excursion, right ventricular fractional area change and right ventricular inferior and lateral wall longitudinal strain） showed significant difference between the ARVC group and control group. All the above-mentioned indices were analyzed by receiver operating characteristic curve （ROC curves）. Area under the curve （AUC） of right ventricular inferior wall longitudinal strain was the largest one （AUC = 0.94） with an optimal cutoff value of -19.5%. Conclusion Compared with two- dimensional echocardiography and tissue Doppler imaging, right ventricular inferior wall longitudinal strain is a more sensitive predictor for changes of ARVC.展开更多
Current guidelines encourage large studies in a diverse population to establish normal reference ranges for three-dimensional(3D)echocardiography for different ethnic groups.This study was designed to establish the no...Current guidelines encourage large studies in a diverse population to establish normal reference ranges for three-dimensional(3D)echocardiography for different ethnic groups.This study was designed to establish the normal values of 3D-left ventricular(LV)and left atrial(LA)volume and function in a nationwide,population-based cohort of healthy Han Chinese adults.A total of 1117 healthy volunteers aged 18–89 years were enrolled from 28 collaborating laboratories in China.Two sets of 3D echocardiographic instruments were used,and full-volume echocardiographic images were recorded and transmitted to a core laboratory for image analysis with a vendor-independent off-line workstation.Finally,866 volunteers(mean age of 48.4 years,402 men)were qualified for final analysis.Most parameters exhibited substantial differences between different sex and age groups,even after indexation by body surface area.The normal ranges of 3D-LV and 3D-LA volume and function differed from those recommended by the American Society of Echocardiography and the European Association of Cardiovascular Imaging guidelines,presented by the World Alliance Societies of Echocardiography(WASE)study,and from the 2D values in the EMINCA study.The normal reference values of 3D echocardiography-derived LV and LA volume and function were established for the first time in healthy Han Chinese adults.Normal ranges of 3D-LV and 3D-LA echocardiographic measurements stratified with sex,age,and race should be recommended for clinical applications.展开更多
Aortico-cameral tunnel is a rare congenital cardiac .anomaly, which arises from the right coronary sinus and enters the left ventricle, occasionally the right ventricle and right atrium. However, more than one tunnel ...Aortico-cameral tunnel is a rare congenital cardiac .anomaly, which arises from the right coronary sinus and enters the left ventricle, occasionally the right ventricle and right atrium. However, more than one tunnel are seldom seen simultaneously in one patient. Here we present a case of multiple aortico-cameral tunnels associated with the bicuspid aortic valve in a 63-year-old man.展开更多
基金supported by Foundation of the Nature Science of Guangdong Province(No.10151008002000011)
文摘Background Arrhythmogenic right ventricular cardiomyopathy （ARVC） mainly performs local myocardial abnormal movements and tissue Doppler and spot tracking technique can accurately reflect myocardial movement. However, the technique is still rarely used in research of ARVC. Methods The study enrolled 28 ARVC patients and 28 normal controls. Right ventricular parameters were measured by two-dimensional echocardiography, tissue Doppler imaging, speckle tracking imaging in order to compare the difference between two groups. Results Morphological indices （right ventricular inflow tract inner diameter and right ventricular outflow tract inner diameter） and functional indices （right ventricular peak S＇, right ventricular E＇/ A＇ ratio, tricuspid annular plane systolic excursion, right ventricular fractional area change and right ventricular inferior and lateral wall longitudinal strain） showed significant difference between the ARVC group and control group. All the above-mentioned indices were analyzed by receiver operating characteristic curve （ROC curves）. Area under the curve （AUC） of right ventricular inferior wall longitudinal strain was the largest one （AUC = 0.94） with an optimal cutoff value of -19.5%. Conclusion Compared with two- dimensional echocardiography and tissue Doppler imaging, right ventricular inferior wall longitudinal strain is a more sensitive predictor for changes of ARVC.
文摘Current guidelines encourage large studies in a diverse population to establish normal reference ranges for three-dimensional(3D)echocardiography for different ethnic groups.This study was designed to establish the normal values of 3D-left ventricular(LV)and left atrial(LA)volume and function in a nationwide,population-based cohort of healthy Han Chinese adults.A total of 1117 healthy volunteers aged 18–89 years were enrolled from 28 collaborating laboratories in China.Two sets of 3D echocardiographic instruments were used,and full-volume echocardiographic images were recorded and transmitted to a core laboratory for image analysis with a vendor-independent off-line workstation.Finally,866 volunteers(mean age of 48.4 years,402 men)were qualified for final analysis.Most parameters exhibited substantial differences between different sex and age groups,even after indexation by body surface area.The normal ranges of 3D-LV and 3D-LA volume and function differed from those recommended by the American Society of Echocardiography and the European Association of Cardiovascular Imaging guidelines,presented by the World Alliance Societies of Echocardiography(WASE)study,and from the 2D values in the EMINCA study.The normal reference values of 3D echocardiography-derived LV and LA volume and function were established for the first time in healthy Han Chinese adults.Normal ranges of 3D-LV and 3D-LA echocardiographic measurements stratified with sex,age,and race should be recommended for clinical applications.
文摘Aortico-cameral tunnel is a rare congenital cardiac .anomaly, which arises from the right coronary sinus and enters the left ventricle, occasionally the right ventricle and right atrium. However, more than one tunnel are seldom seen simultaneously in one patient. Here we present a case of multiple aortico-cameral tunnels associated with the bicuspid aortic valve in a 63-year-old man.
