[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- strait
- straitjacket
- stramonium
- strand
- strangalesthesia
- strangle
- strangles
- strangulated
- strangulation
- stranguria
- strangury
- strap
- strapping
- Strasburger's cell plate
- Strassburg's test
- strata
- stratification
- stratified
- stratiform
- stratigram
- stratigraphy
- stratum
- Straus reaction (phenomenon, test)
- Strauss sign
- streak