V2EX t wave

T Wave

释义 Definition

T wave(T波):心电图(ECG/EKG)上的一个波形,通常代表心室复极(ventricular repolarization),也就是心室肌在一次收缩后“电活动恢复”的过程。临床上,T波的高尖、倒置、低平等改变常用于提示电解质紊乱(如高钾/低钾)、缺血、心肌梗死或药物影响等情况。

发音 Pronunciation

/ti wev/

例句 Examples

The doctor pointed out the T wave on my ECG.
医生在我的心电图上指出了T波。

In acute myocardial ischemia, the T wave may become inverted or unusually tall, so clinicians compare it with prior ECGs and the patient’s symptoms.
在急性心肌缺血时,T波可能倒置或异常高尖,因此临床医生会把它与既往心电图及患者症状进行对照分析。

词源 Etymology

T wave中的字母T来自早期心电图波形的字母标记系统(P、Q、R、S、T)。这些字母是为了便于描述不同阶段的电活动而约定俗成地使用,并不直接代表某个英文单词的缩写;其中T波后来被明确与心室复极过程相关联。

相关词 Related Words

文学与著作中的用例 Literary Works

  • The ECG Made Easy(John R. Hampton)
  • Marriott’s Practical Electrocardiography(Marriott 等,后续版本多位作者修订)
  • Braunwald’s Heart Disease: A Textbook of Cardiovascular Medicine(Braunwald 等)
  • Harrison’s Principles of Internal Medicine(Harrison 等)
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