?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Infra-His+Block+in+a+Normal+Heart%0A&rft.creator=Alasti%2C+Mohammad&rft.creator=Alizadeh%2C+Abolfath&rft.creator=Fazelifar%2C+Amirfarjam&rft.creator=Ali+Sadr-Ameli%2C+Mohammad&rft.subject=Indian+Pacing+and+Electrophysiology+Journal&rft.description=A+55+year+old+man+with+history+of+palpitation+was+referred+for+electrophysiologic+study.+Baseline+ECG%2C+physical+examination+and+transthoracic+echocardiographic+study++were+normal.+Electrophysiologic+study+revealed+normal+AH+and+HV+intervals.+Pacing+of+right+atrium+with+a+cycle+length+of+300+msec+showed++2%3A1+AV+block.+AH+interval+was+252+msec+and+the+block+was+infra-his+(Figure+1).+With+continual+of+right+atrial+pacing%2C+one+to+one+AV+conduction+with+increasing+AH+interval+to+282+msec+and+QRS+widening+(LBBB+pattern)+were+being+observed.++HV+intervals+during+2%3A1+block+and+during+1%3A1+AV+conduction+were+normal.++What+is+the+mechanism%3F+Is+it+an+abnormal+finding+in+this+patient%3F%0A&rft.publisher=Indian+Pacing+and+Electrophysiology+Group&rft.contributor=Singh%2C+Balbir&rft.contributor=Lokhandwala%2C+Yash&rft.contributor=Francis%2C+Johnson&rft.contributor=Gupta%2C+Anup&rft.contributor=Ghosh%2C+Joydeep&rft.date=2006-07&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F5239%2F1%2Falasti2.htm&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5239%2F2%2Falasti2.pdf&rft.identifier=++Alasti%2C+Mohammad+and+Alizadeh%2C+Abolfath+and+Fazelifar%2C+Amirfarjam+and+Ali+Sadr-Ameli%2C+Mohammad++(2006)+Infra-His+Block+in+a+Normal+Heart.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5239%2F