22 träffar

ArticleECG
The PR Interval & PR segment

…article The normal electrocardiogram (ECG). A brief summary of the video lecture and the article is provided below. PR interval and PR segment The PR…

ArticleProcedurer
Dix–Hallpike test and Epley manoeuvre

…of other neurological findings. The treatment is a repositioning manoeuvre. Indications Brief attacks of vertigo, seconds to a minute or so, that are provoked by…

ArticleCPR
Sudden cardiac arrest: Case 1

…are supraventricular beats during sinus rhythm. A brief run of polymorphic ventricular tachycardia (VT) occurs after the 4th beat. The VT terminates spontaneously after a…

ArticleEchocardiography
Technical aspects of the ultrasound image

…ultrasound transducer generates short bursts (pulses) of ultrasound waves. Reflected ultrasound waves are analyzed by the machine during the brief pauses between the pulses. Thus…

ArticleProcedurer
Transcutaneous and transvenous pacing

…with a known risk of bradycardia. Transvenous pacing is chosen when the need is more than brief: continuing pacing dependence, inadequate or unachievable transcutaneous capture…

ArticleCardiology
Adenosine for tachyarrhythmias (AVNRT, AVRT, NCT)

…established drug interaction. The half life of adenosine is 8 seconds. Adverse effects are therefore very brief. Indications Paroxysmal supraventricular tachycardia (PSVT), which includes forms…

ArticleEchocardiography
Hemodynamic principles and calculations

…previously (see Doppler Effect and Doppler Echocardiography). Only a brief summary of the Doppler effect is provided here. The Doppler effect is used to assess…