Value of Crochetage(Notch)on R wave in the inferior leads of electrocardiogram in the diagnosis of secundum atrial septal defect
ZHU Ying-hong
ZHANG Wen-hua
DENG Yin-hua
JIANG Shuang-lan
LIN Shu-lian
YANG Li-li
Abstract：Objective To explore the value of Crochetage(Notch)on R wave in the inferior leads of electrocardiogram(ECG)in the diagnosis of secundum trial septal defect(ASD).Methods A retrospective analysis was conducted on the ECGs of 110 patients with secundum ASD(ASD Group).Taking 110 healthy subjects(Control Group)with normal echocardiography and no heart disease at the same period as control,the distribution characteristics of Crochetage(Notch)on R wave in the ECGs of both groups were compared,and the influence of ASD defect size on the detection rate of Crochetage(Notch)on R wave was analyzed.Results The ASD Group had a higher incidence in Crochetage(Notch)on R wave compared with the Control Group(63.6％vs10.9％,P＜0.01).There were 41,45 and 24 ASD patients with a defect diameter of 0～5,6～10 and＞10 mm,respectively,of which 18,30 and 22 cases had Crochetage(Notch)on R wave.The incidence of Crochetage(Notch)on R wave increased with the increase of defect diameter(P＜0.01).Conclusion The Crochetage(Notch)on R wave in the inferior leads of electrocardiogram may serve as a supplementary indicator for ASD detection.
Keywords：atrial septal defectinferior leadsCrochetage(Notch)on R wave
Publication Date：2023-12-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 679-681 )