正常QRS波群时限为A.≤0.10sB.≤0.11sC.≤0.12sD.≤0.13sE.≤0.

正常P－R间期A.<0.11sB.0.12～0.20sC.<0.30sD.0.06～0.10sE.<0.04s

正常QRS波宽度A.<0.11sB.0.12～0.20sC.<0.30sD.0.06～0.10sE.<0.04s

Q－T间期的正常值是A.0.32～0.44sB.0.06～0.10sC.0.12～0.20sD.0.04～0.11sE.0.36～0.41s

QRS波群时间的正常值是A.0.32～0.44sB.0.06～0.10sC.0.12～0.20sD.0.04～0.11sE.0.36～0.41s

正常成人的QRS波群时限多为A、0.04～0.08sB、0.04～0.10sC、0.06～0.10sD、0.08～0.10sE、0.08～0.12s

成年人P－R间期正常值是A、0.11～0.20sB、0.12～0.20sC、0.08～0.20sD、0.10～0.20sE、0.06～0.10s