我们可以用一种叫做心电图(electrocardiogram, ECG)的仪器来检测和记录心脏的电活动。心电图上有一些波形,分别代表心脏的不同部分的电活动。其中,P波代表心房去极化,QRS波代表心室去极化,T波代表心室复极化。我们可以用一个参数叫做QT间期(QT interval)来衡量心室复极化的时间,它是从QRS波开始到T波结束的时间。正...
关键词学习:ECG - 心电图;cardiac cycle - 心动周期;QT interval - QT间期;LQTS - 长QT间期综合征;QTc - 校正QT间期;Bazett's formula - Bazett公式;QRS complex - QRS复合波;Depolarize - 除极、去极化;Repolarize - 复极化;Cardiac Action Potential - 心肌细胞动作电位;membrane potential - 心肌细胞膜电...
求翻译:The QT interval in the electrocardiogram (ECG) represents the duration of ventricular depolarization and subsequent repolarization. It is measured from the beginning of the QRS complex to the end of the T wave. The 'group-Q-onset' and a 'group-T-wave end' are defined, respectively, ...
对QT/RR(心电图中R波与R波的距离)关系进行分析可能更合适,包括用公式对个体动物QT间期数据进行校正。 在犬或猴等大动物记录ECG,是安全性评价的基本组成。药物引起QT间期显著延长将使致命性心律失常TdP发生的风险显著增加,因而ECG的QT间期被作为...
(2001). The QT interval in the dog ECG: importance in preclinical toxicology and relationship to heart rate. Toxicology Methods 11, 21-40.Hanton, G., Nahas, K., Priou, C., Rabemampianina, Y., & Baneux, P. (2001). The QT interval in the dog ECG: Importance in preclinical ...
Stubhan et al Evaluation of cardiovascular and ECG parameters in the normal, freely moving GöttingenMinipigJ Pharmacol Toxicological Methods,2008, 57: 202–11 KanoM et al QT PRODACT: Usabilityof miniature pigs in safety pharmacology studies: Assessment for drug-inducedQT interval prolongationJ Phar...
QT Interval - ECG in Emergency Medicine and Acute Care - Chapter 15ELSEVIEREcg in Emergency Medicine & Acute Care
QT/QTc Interval Monitoring ST/AR Algorithm IntelliVue Patient Monitor and Information Center, Application Note • Electronic caliper assisted QT/QTc This application note describes principles and uses of measurements can be performed manually on any stored ECG waveform. QT interval monitoring. It also...
BySteven Lome, MD ECG Library Save Electrophysiologic Disorders Enlarge ECG Findings: 1.Normal Sinus Rhythm 2.Prolonged QT Interval
11,12 This variability in QT interval measurement results from biological factors, such as diurnal effects, differences in autonomic tone, electrolytes, and drugs; technical factors, including the environment, the processing of the recording, and the acquisition of the ECG recording; and intraobserver...