???

??????????????????????????????????????????????

1????P-R>0.20??P?QRS?.

2???????P?QRS??2:1;3:2;4:3????????????????

(1)???-P-R??P?R-R??P;?PR-R?P-P???

(2)???????P-R???QRS???????1:1;2:1;3:1;3:2;4:3??QRS????

????????????QRS?;?????????QRS??

      ?????,P-R ??0.24s,??0.65%~1.1%,50 ??1.3%.
 ?,?????8.7%.???,?,?,,????,??,??P-R ?.
??P-R ????,??.?.
???????,????,????4%~15%,??.??,??????,?,.???,??????.????????,???.

????????????? ???V1rSR\'?V5V6S?QRS??0.11???????????????????????????????????

??????????????????????????????????????????????????????
??   2010-11-30 22:22 ????
???   2010-11-30 22:30 ?????????????????????????????????
 
40 ???????