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Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

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Nội dung chi tiết: Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

Ventricular arrhythmias and bundle-branch blockOverviewTile three preceding chapters have focused on supraventricular arrhythmias. Supraventricular ar

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2rrhythmias refer to those rhythms that originate above the bundle branches and include the sinus, atrial, and junctional rhythms. The electrical impul

se produced by supraven tricular rhythms follows the normal conduction pathway, resulting in simultaneous depolarization of the right and let! ventric Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

les. The resulting QRS complex is narrow (0.10 second or less in duration). Ventricular beats and rhythms I Figure 9 1) originate below the bundle of

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

His in a pacemaker site in either the right or left ventricle. When impulses arise in the ventricles, the impulse does not enter the normal conduction

Ventricular arrhythmias and bundle-branch blockOverviewTile three preceding chapters have focused on supraventricular arrhythmias. Supraventricular ar

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2ed simultaneously and the stimulus spreads through the ventricles in an aberrant manner, resulting in a wide QRS complex of 0.12 second or greater.Sin

ce ventricular depolarization is abnormal, ventricular repolarization will also be abnormal, resulting in changes in the ST segments and T waves. The Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

ST segments and T waves will slope in the opposite direction from the main QRS deflection (if the ectopic QRS complex is predominantly negative, lhe S

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

T segment is usually elevated and the T wave positive: if the ectopic QRS complexis predominantly positive, the ST segment is usually depressed and th

Ventricular arrhythmias and bundle-branch blockOverviewTile three preceding chapters have focused on supraventricular arrhythmias. Supraventricular ar

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2ular tachycardia (VT). ventricu lar fibrillation (VF), idioventricular rhythm, accelerated idi ©ventricular rhythm, and ventricular standstill. All of

these rhythms are associated with a wide QRS complex (except VF and ventricular standstill, which do not have QRS complexes). Because the ventricles Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

are the least efficient of the heart's pacemakers, most of these rhythms are lor have the potential to be) life threatening and demand prompt recog ni

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

lion and treatment.The electrical impulse in bundle-branch block originates in the sinus node, not in ventricular tissue, but a discussion of bundle b

Ventricular arrhythmias and bundle-branch blockOverviewTile three preceding chapters have focused on supraventricular arrhythmias. Supraventricular ar

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2e intraventricular conduction system consists of the right bundle branch and the left main bundle branch, which divides into two fascicles: an anterio

r fascicle and a posterior fascicle. Block may occur in any part of this conduction system. Normally, the electrical impulses travel throughIdioventri Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

cular rhythmAccelerated idicrventricubr rhythmPremature yentricular contractionVentricular tachycardiaVentricular i'brillationBundle-branch blockFigur

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

e 9-1. Ventricular arrhythmias and bundle-branch Week197198 Ventricular arrhythmias and bundle-branch blockthe right bundle branch and the left bundle

Ventricular arrhythmias and bundle-branch blockOverviewTile three preceding chapters have focused on supraventricular arrhythmias. Supraventricular ar

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2nd a QRS duration of 0.10 second or less. When one of the bundle branches is blocked, the electrical impulse trawls down the intact bundle, depolarizi

ng that ventricle first, then the impulse progresses through the interventricular septum to depolarize die other ventricle. Depolarization of one vent Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

ricle before die other is called sequential depolarization. Depolarization of the ventricles is delayed, resulting in a wide QRS complex of 0.12 secon

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

d or greater. The presence of a bundle branch block I Figures 9-2 through 9-4 and Box 9-1) can be recognizedBox 9-1.Bundle-branch block: Identifying E

Ventricular arrhythmias and bundle-branch blockOverviewTile three preceding chapters have focused on supraventricular arrhythmias. Supraventricular ar

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2 second or greater)by a monitoring lead. Differentiating between right and left bundle branch block requires a 12 lead electrocardiogram (ECG).ÌÌÌSÌÌÌ

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--------------------------------------------------------:::------------------- ---::::::::::::::::Figure 9-2. Normal sinus rhythm with bundle-branch b

Ebook ECG workout-Exercises in arrhythmia interpretation (6th edition): Part 2

lock.Rhythm:Regular (off by 2 squares)Rate:60 to 65 beats/minutep waves:SinusPR interval:0.16 to 0.20 second

Ventricular arrhythmias and bundle-branch blockOverviewTile three preceding chapters have focused on supraventricular arrhythmias. Supraventricular ar

Ventricular arrhythmias and bundle-branch blockOverviewTile three preceding chapters have focused on supraventricular arrhythmias. Supraventricular ar

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