ABSTRACT
This article deals with the detection of the left ventricular band by 2-dimensional echocardiography in 102 cases.The nomenclature of the band and its detection rate,diagnosis and differential diagnosis were discussed.The mechanism of the ventricular premature beat and systolic murmur in the cardiac apical region,and their clinical significance were also dis- cussed.This article shows that this band is usually regarded as an anatomic feature.It does not relate to any cardiac diseases.The premature beat and murmur caused by the band belong in benign premature beat or physiologic murmur.
ABSTRACT
The left ventricular bands of isolated human heart were studied by microscopy, echocardi ography and gross anatomical method. The results indicate that the structures of the bands were those commonly observed in human heart. They could be classified into two types: myo-bands and tendinous bands. However, we could only differentiate the “bands whose” diameter was more than 1.5mm with Aloka-SSD720 echocardiograph (made in Japan). we suggest that the resolution of the instrument we used was too low, and this might be the main reason that the detection of left ventricular bands was much lower than the incidence, we classified these bands according to the adhering points and diameters of bands.In this paper, the forming factors of bands and their clinical significance are also discussed.