[ilektrəuˈkɑ:diəuɡræm]
心电图：在体表测出心肌兴奋时产生电流变化的描记图。正常心电图显示心房和心室活动产生的波形。首先出现的P波是由心房兴奋所致。QRS波则是心室兴奋(去极化)所致。T波是心室恢复(复极化)波。U波是在正常心电图T波后立即发生的来源不明的电位波，低血钾时增强。缩写为ECG或EKG。另见lead
习惯用语scalar electrocardiogram
梯级心电图，无向量心电图：仅表示电压强度变化和极性(正负)与时间关系的常规记录图
正常心电图- naja
- Nakayama's reagent,test
- nalbuphine hydrochloride
- Nalfon
- nalidixate sodium
- nalidixic acid
- Nalline
- nalmexone hydrochloride
- nalorphine
- naloxone hydrochloride
- naltrexone
- name
- nandrolone
- nanism
- Nannizzia
- nann(o)-
- Nannocystis
- Nannomonas
- nan(o)-
- nanocephalia
- nanocephalous
- nanocephaly
- nanocormia
- nanocurie
- nanogram