Corresponding Observation Between Echocardiology And Electrocardiogram In Patients With Pacs And Pvcs And The Tcm Syndrome Type Distribution Between Them

Premature contraction is one of the most detectable type of arrhythmia in clinical. Echocardiology is a noninvasive cardiovascular examination that most widely used in clinical, including but not limited to M-mode curves, two demensional ultrasound and color doppler. Those technologies can make quantitative analysis of the changes of cardiac function and hemodynamics, which provide reliable reference for the diagnosis and treatment of premature contraction.Objective To observe specific changes in echocardigraphy caused by PAC(premature atrial contraction) and PVC(premature ventricular contraction) and analyze the TCM(Chinese traditional medical) syndrome type distribution of PAC and PVC, from which we could make clear diagnosis between PAC and PVC.Methods 31 PAC cases and 34 PVC cases which had already been diagnosed by electrocardiogram underwent the examination of electrocardiogram and echocardiography to measure cardiac cycles. Echocardiology is used to measure the R-R duration, the blood velocity of LVOT(left ventricular outflow tract) and AV(aortic valve) of PAC and PVC cases. Then record the changes of image in echocardiology of PAC and PVC cases and the TCM syndrome typedistribution of PAC and PVC.Results The two durations of doppler spectrum from LVOT(left ventricular outflow tract) and AV(aortic valve) are shorter than the two regular doppler spectrum durations in 34 PAC cases while equel to the two regular doppler spectrum durations in 38 PVC cases, which is corresponding to the changes in R-R durations of ECG. In both 34 PAC cases and 38 PVC cases, the E wave anticipates, the A wave disappears and the F-G segment after prelongs in M-mode; the E wave anticipates and the A wave disappears in mitral valve blood flow spectrum; the aortic valve spectrum anticipates. In both premature contraction groups the shortened diastole decreases the systole velocity of left ventricular, whereas in the first cardiac cycle after PAC and PVC the lengthened diastole increases the systole velocity of left ventricular. In 34 PAC cases, the TCM syndrome type are heart yin deficiency syndrome(29.40%), both qi and blood deficiency syndrome(23.50%), heart blood stasis syndrome(20.60%), phlegmatic fire disturb mental syndrome(14.70%), heart yang sluggish syndrome(8.80%), pathogenic water attacking heart syndrome(2.90%). In 38 PVC cases, the TCM syndrome type are phlegmatic fire disturb mental syndrome(26.3%), heart blood stasis syndrome(23.7%), both qi and blood deficiency syndrome(18.4%), heart yin deficiency syndrome(15.8%), heart yang sluggish syndrome(10.5%), pathogenic water attacking heart syndrome(5.3%). Conclusion PACs and PVCs cause particular respective changes in echocardiology by which could help us distinct one from the other without electrocardiogram. Both PAC and PVC can urge the left ventricular to eject and increase the left ventricular ejection blood velocity whereas the compensatory pause after them can delaythe left ventricular to eject and decrease the left ventricular ejection blood velocity. In PAC cases, heart yin deficiency syndrome is the most common TCM syndrome type while pathogenic water attacking heart syndrome is the least. In PVC cases, the most common TCM syndrome type is phlegmatic fire disturb mental syndrome while the least common TCM syndrome type is pathogenic water attacking heart syndrome.