小儿心电图 PPT课件

Р0.09-0.14Р0.09-0.12Р0.10-0.12Р7d-1mР0.10Р0.08-0.125Р0.08-0.12Р0.085-0.12Р1-3mР0.08-0.12Р0.08-0.14Р0.08-0.11Р3-6mР0.10-0.14Р0.09-0.13Р0.08-0.13Р0.10Р6-12mР0.10-0.14Р0.09-0.14Р0.10-0.12Р0.11Р心率(次/min)Р<70Р70-90Р91-110Р111-130Р131-150Р1-3yР0.11-0.13Р0.10-0.14Р0.10-0.14Р3-5yР0.10-0.15Р0.10-0.15Р0.10-0.14Р5-8yР0.14Р0.10-0.16Р0.10-0.16Р0.11-0.14Р8-12yР0.13-0.14Р0.11-0.18Р0.12-0.16Р0.13-0.16Р12-16yР0.11-0.17Р0.11-0.18Р0.11-0.15Р0.14РQRS波Р1、时限:0.04-0.10s。?2、振幅:? ⑴R Ⅱ+R Ⅲ<4.5mv,R Ⅰ+S Ⅲ<3.0mv,RaVR<0.5mv,RaVL<2.0mv,RaVF<2.5mv。? ⑵3岁以下RV1<1.5mv,3岁以上RV1<1.0mv。? ⑶RV5<3.0mv? ⑷V1的R/S比值:1岁以下<5.0,1-3岁<2.5,3-5岁<2.0,5-12岁<1.5,12岁以上<1.0。Р3、形态:? Q波: Ⅰ不多见,V3R、V1、V2导联一般不应出现, Ⅱ、Ⅲ、aVF、V5可有Q波,aVR可呈QS或Qr,Q波时限一般不超过0.04s,儿童期Q波电压一般<1/4R。? R波:R波振幅较高大,尤其是胸导联,V1(V3R)呈高R波,V5V6出现深S波,随年龄的增长,RV1减小RV5增大。右胸导联或aVR导联较常见到R’波或挫折、顿挫。