Electrocardiography

2
Electrocardiography


ECG diagnostic criteria are listed in Box 2.1.


For the tracings in the questions/figures in this section, please analyze carefully and list the important findings and possible clinical setting. Answers are found at the end of the chapter.

Diagram shows ECG diagnostic criteria on atrioventricular block as PR interval which is being shortest dropped beat and lateral T wave inversion.

Question/Figure 2.1

Diagram shows ECG diagnostic criteria on right ventricular with strain and bilateral enlargement.

Question/Figure 2.2

Diagram shows ECH diagnostic criteria of sinus rhythm with bifasscicular block in less than 30 degree axis.

Question/Figure 2.3

Diagram shows ECH diagnostic criteria of sinus arrhythmia with short PR interval.

Question/Figure 2.4

Diagram shows ECH diagnostic criteria of atrial fibrillation with absence of P wave and irregularly irregular ventricular response.

Question/Figure 2.5

Diagram shows ECG diagnostic criteria of acute anterior ST elevation myocardial infarction in V2 and V3.

Question/Figure 2.6

Diagram shows ECH diagnostic criteria of hyperkalemia with peaked tall T waves in V2 and V3.

Question/Figure 2.7

Diagram shows ECH diagnostic criteria of junctional tachycardia along with P waves which are inverted.

Question/Figure 2.8

Diagram shows ECH diagnostic criteria of RVH along with right axis deviation and strain pattern in right chest.

Question/Figure 2.9

Diagram shows ECH diagnostic criteria of WPW syndrome.

Question/Figure 2.10

Diagram shows ECH diagnostic criteria of seven beats with accelerated idioventricular rhythm.

Question/Figure 2.11

Diagram shows ECH diagnostic criteria of atrial flutter having 2:1 conduction.

Question/Figure 2.12

Diagram shows ECH diagnostic criteria of posterior myocardial infarction with waves in V1 and V2 with upright T wave.

Question/Figure 2.13

Diagram shows ECH diagnostic criteria of ventricular tachycardia with RBBB morphology.

Question/Figure 2.14

Diagram shows ECH diagnostic criteria of atypical atrial flutter with 3:1 conduction with intermittent RV pacing.

Question/Figure 2.15

Diagram shows ECH diagnostic criteria of acute anterior STEMI along with Q waves and ST elevation in 3-4mm interval.

Question/Figure 2.16

Diagram shows ECH diagnostic criteria of sinus rhythm with low QRS voltage.

Question/Figure 2.17

Diagram shows ECH diagnostic criteria of nonconducted P followed by P associated with ventricular with T wave inversion.

Question/Figure 2.18

Diagram shows ECH diagnostic criteria of atrial fibrillation with rapid ventricular response of low QRS and ST elevation.

Question/Figure 2.19

Diagram shows ECH diagnostic criteria of acute pericarditis along with ST elevation and PR segment depression.

Question/Figure 2.20

Diagram shows ECH diagnostic criteria of episodes of complete heart block.

Question/Figure 2.21

Diagram shows ECH diagnostic criteria of premature ventricular contractions and accelerated idiojunctional rhythm.

Question/Figure 2.22

Diagram shows ECH diagnostic criteria of junctional rhythm with ventricular bigeminy.

Question/Figure 2.23

Diagram shows ECH diagnostic criteria of junctional rhythm with RBBB along with beats 1, 4, and 5.

Question/Figure 2.24

Diagram shows ECH diagnostic criteria of dual-chamber pacing.

Question/Figure 2.25

Diagram shows ECH diagnostic criteria of ventricular bigeminy.

Question/Figure 2.26

Diagram shows ECH diagnostic criteria of atrial pacing ventricular tracking.

Question/Figure 2.27

Diagram shows ECH diagnostic criteria of dual-chamber pacer with atrial sensing and V-pacing.

Question/Figure 2.28

Diagram shows ECH diagnostic criteria of atrial flutter with 2:1 conduction.

Question/Figure 2.29

Diagram shows ECH diagnostic criteria of WPW syndrome.

Question/Figure 2.30

Diagram shows ECH diagnostic criteria of dual-chamber pacer having atrial sensing and V-pacing.

Question/Figure 2.31

Diagram shows ECH diagnostic criteria of high-grade AV block having P waves.

Question/Figure 2.32

Diagram shows ECH diagnostic criteria of narrow complex regular tachycardia.

Question/Figure 2.33

Diagram shows ECH diagnostic criteria of broad complex tachycardia at rate of 140 bpm.

Question/Figure 2.34

Diagram shows ECH diagnostic criteria of atrial flutter with 2:1 conduction.

Question/Figure 2.35

Diagram shows ECH diagnostic criteria of atrial paced rhythm with normal AV conduction.

Question/Figure 2.36

Diagram shows ECH diagnostic criteria of atrial sensed and ventricular paced rhythm.

Question/Figure 2.37

Diagram shows ECH diagnostic criteria of WPW syndrome with delta waves.

Question/Figure 2.38

Diagram shows ECH diagnostic criteria of dual-chamber pacer with Arial tracking and V-pacing.

Question/Figure 2.39

Diagram shows ECH diagnostic criteria of VOO pacing with pacer competing with junctional rhythm.

Question/Figure 2.40

Diagram shows ECH diagnostic criteria of dual-chamber pacing.

Question/Figure 2.41

Diagram shows ECH diagnostic criteria of WPW syndrome of posterioseptal pathway.

Question/Figure 2.42

Diagram shows ECH diagnostic criteria of BiV pacer with atrial and LV pacing.

Question/Figure 2.43

Diagram shows ECH diagnostic criteria of complex tachycardia at rate of 140 bpm.

Question/Figure 2.44

Diagram shows ECH diagnostic criteria of complex tachycardia having monophasic RBBB pattern.

Question/Figure 2.45

Diagram shows ECH diagnostic criteria of atrial fibrillation for first five beats.

Question/Figure 2.46

Diagram shows ECH diagnostic criteria of BiV pacer with patient paced in atrium and left ventricle.

Question/Figure 2.47

Diagram shows ECH diagnostic criteria of blocked PACs.

Question/Figure 2.48

Diagram shows ECH diagnostic criteria of acute inferolateral STEMI.

Question/Figure 2.49

Diagram shows ECH diagnostic criteria of BiV hypertrophy.

Question/Figure 2.50

Diagram shows ECH diagnostic criteria of normal electrocardiogram.

Question/Figure 2.51

Diagram shows ECH diagnostic criteria of acute inferior STEMI with near-complete ST segment resolution.

Question/Figure 2.52

Diagram shows ECH diagnostic criteria of acute inferolateral STEMI.

Question/Figure 2.53

Diagram shows ECH diagnostic criteria of multifocal atrial tachycardia along with P wave.

Question/Figure 2.54

Diagram shows ECH diagnostic criteria of sinus tachycardia.

Question/Figure 2.55

Diagram shows ECH diagnostic criteria of progressive PR prologation of second-type AV block.

Question/Figure 2.56

Diagram shows ECH diagnostic criteria of bifascicular block in patient having right axis deviation.

Question/Figure 2.57

Diagram shows ECH diagnostic criteria of dual-chamber pacing where V-spike is before QRS.

Question/Figure 2.58

Diagram shows ECH diagnostic criteria of inferior myocardial infarction.

Question/Figure 2.59

Diagram shows ECH diagnostic criteria of bifascicular block with RBBB and LAFB leading V1 to V4.

Question/Figure 2.60

Diagram shows ECH diagnostic criteria of severe hyperkalemia near sine wave appearance.

Question/Figure 2.61

Diagram shows ECH diagnostic criteria of atrial flutter having 2:1 conduction.

Question/Figure 2.62

Diagram shows ECH diagnostic criteria of marked respiratory sinus arrhythmia having P wave.

Question/Figure 2.63

Diagram shows ECH diagnostic criteria of atrial tachycardia with variable block.

Question/Figure 2.64

Diagram shows ECH diagnostic criteria of paroxysmal atrial fibrillation having rapid ventricular response.

Question/Figure 2.65

Diagram shows ECH diagnostic criteria of atypical atrial flutter with variable block.

Question/Figure 2.66

Diagram shows ECH diagnostic criteria of atrial tachycardia with 3:1 conduction.

Question/Figure 2.67


Answers





  1. Second-degree atrioventricular (AV) block, Mobitz type I (AV Wenckebach). Note increasing PR interval and PR interval being the shortest after a dropped beat. Also, note that the patient has intraventricular conduction delay (IVCD) and lateral T wave inversion. Despite IVCD, it is less likely to be trifascicular block as AV Wenckebach is generally a nodal rather than infra-Hisian phenomenon.

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Apr 23, 2020 | Posted by in CARDIOLOGY | Comments Off on Electrocardiography

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