ecg made easy part 2 ecg quiz...ecg made easy part 2 –ecg quiz 1 •presented by: •dr randall...

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ECG made easyPart 2 – ECG Quiz

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• Presented by:• Dr Randall Hendriks, Interventional Cardiologist – Western Australia

1. Left2. Right3. Indeterminate

? Axis

1. Left2. Right3. Indeterminate

? Axis

1. Left2. Right3. Indeterminate

Page 4

? Axis

1. Left2. Right3. Indeterminate

Page 5

? Axis

1. Left2. Right3. Indeterminate

Page 6

? Axis

1. Left2. Right3. Indeterminate

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? Axis

Standard limb lead reversal!

1. Atrial fibrillation2. Atrial flutter3. SVT4. Sinus tachycardia5. Junctional

Page 8

Tachycardia

1. Atrial fibrillation2. Atrial flutter3. SVT4. Sinus tachycardia5. Junctional

Page 9

Tachycardia

1. Atrial fibrillation2. Atrial flutter3. SVT4. Sinus tachycardia5. Junctional

Page 10

Tachycardia

1. Atrial fibrillation2. Atrial flutter3. SVT4. Sinus tachycardia5. Junctional

Page 11

Tachycardia

1. Atrial fibrillation2. Atrial flutter3. SVT4. Sinus tachycardia5. Junctional

Page 12

Tachycardia

1. Atrial fibrillation2. Atrial flutter3. SVT4. Sinus tachycardia5. Junctional

Page 13

Tachycardia

1. Atrial fibrillation2. Atrial flutter3. SVT4. Sinus tachycardia5. Junctional

Page 14

Tachycardia

1. Atrial fibrillation2. Atrial flutter3. SVT4. Sinus tachycardia5. Junctional

Page 15

Tachycardia

1. Atrial flutter2. Atrial fibrillation3. SVT4. Sinus tachycardia5. Junctional

Page 16

Tachycardia

1. Atrial flutter2. Atrial fibrillation3. SVT4. Sinus tachycardia5. Junctional

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Tachycardia

1. Sinus bradycardia2. First degree AV block3. Mobitz Type I

(Wenckebach)4. Mobitz Type 25. Complete heart block

Page 18

Bradycardia

1. Sinus bradycardia2. First degree AV block3. Mobitz Type I

(Wenckebach)4. Mobitz Type 25. Complete heart block

Page 19

Bradycardia

1. Inferior2. Anterior3. Lateral4. Posterior5. IPL

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ST elevation MI

1. Inferior2. Anterior3. Lateral4. Posterior5. IPL

Page 21

ST elevation MI

1. Inferior2. Anterior3. Lateral4. Posterior5. IPL

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ST elevation MI

1. Inferior2. Anterior3. Lateral4. Posterior5. IPL

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ST elevation MI

1. Inferior2. Anterior3. Lateral4. Posterior5. IPL

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ST elevation MI

1. Inferior2. Anterior3. Lateral4. Posterior5. IPL

Page 25

ST elevation MI

1. Anterior MI2. Normal repolarisation3. LV aneurysm4. Pericarditis5. Brugada syndrome

Page 26

ST elevation – 30 year old Thai man with syncope

1. Anterior MI2. Normal repolarisation3. LV aneurysm4. Pericarditis5. Brugada syndrome

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ST elevation – 30 year old Thai man with syncope

1. Anterior MI2. Normal repolarisation3. LV aneurysm4. Pericarditis5. Brugada syndrome

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ST elevation – young adult patient with pleuritic chest pain

1. Anterior MI2. Normal repolarisation3. LV aneurysm4. Pericarditis5. Brugada syndrome

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ST elevation – young adult patient with pleuritic chest pain

1. VT2. SVT with aberrancy

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Palpitations

1. Anterior MI2. Normal repolarisation3. LV aneurysm4. Pericarditis5. Brugada syndrome

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ST elevation – young adult patient with pleuritic chest pain

1. Anterior MI2. Normal repolarisation3. LV aneurysm4. Pericarditis5. Brugada syndrome

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ST elevation – young adult patient with pleuritic chest pain

1. Absence of RS?2. No – next question

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Palpitations

1. R/S interval > 100msec?2. Yes - VT

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Palpitations

Can’t miss-life threatening ECGs

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Page 36

Bradycardia and hypotensive in ED

Page 37

Bradycardia and hypotensive in ED

Complete heart block

Wolff-Parkinson-White syndrome

Page 40

Palpitations: 20 year old female with presyncope

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Palpitations: 20 year old female with presyncope

Pre-excited AF

Page 42

Hypokalaemia

Page 43

Broad complex tachycardia – diagnosis?

Page 44

Broad complex tachycardia – diagnosis?

Torsades de Pointes – QT prolongation

Page 45

Hypokalaemia

• Decreased extracellular K – hyperexcitability: re-entrant arrhythmias

• Increase amplitude and width of P wave• Prolonged PR interval• T flattening / inversion• ST depression• Prominent U waves• Apparent long QT (QTU fusion)• SVEs, VPBs• SVT (AF, atrial flutter, atrial tachy)• VT, VF and Torsades de Pointes

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Hyperkalaemia

Page 47

Hyperkalaemia

• Increased extracellular K – reduces myocardial excitability• Repolarisation changes:

Peaked T waves• Atrial paralysis:

P wave widens and flattensPR prolongationP wave disappears

• Conduction abnormality and bradycardia:QRS prolongs / bizarreHigh grade AV block, junctional and ventricular escape rhythmsSinus brady or slow AFSine wave (pre terminal)

• Cardiac arrest:AsystoleVFPEA with bizarre wide QRS

Page 48

Hyperkalaemia

Page 49

Digoxin toxicity – PAT with block and VPBs

Page 50

Bidirectional VT – digoxin toxicity

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Digoxin toxicity

• Increased automaticity / decreased AV conduction:SVT with slow ventricular response

• PVC’s, sinus brady, AF• Any type of AV block• Regularised AF (AF with CHB)• VT (polymorphic or bidirectional)

Page 52

Intracranial haemorrhage

Page 53

Intracranial haemorrhage

• Widespread giant T inversion• QT prolongation• Bradycardia (Cushing reflex – brain stem herniation)• ST elevation or depression• Increased U wave amplitude• ST, junctional, VPBs, AF• (? Hypothalamic stimulation / autonomic dysregulation)

Page 54

Massive pulmonary embolism

Page 55

Massive pulmonary embolism

• Sinus tachycardia• Complete or incomplete RBBB• RV strain

T inversion V1-4, II,III,aVF• Right axis deviation• Dominant R V1• P pulmonale• SI, QIII, TIII in 20% only• Clockwise rotation• Atrial arrhythmias• Non specific ST/T changes

Page 56

Pacemaker malfunction

Page 57

70 year old, chest pain and diaphoresis

Page 58

70 year old, chest pain and diaphoresis

Extensive anterior MI (‘tombstoning” pattern)

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Ischaemic sounding chest pain

Page 60

Ischaemic sounding chest pain

Wellens’ Syndrome – proximal LAD stenosis

Page 61

LMCA occlusion

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LMCA occlusion

• Widespread ST depression (leads I, II, V4 – 6)• ST elevation aVR ≥ 1mm• ST elevation aVR ≥ V1

• Can also see in:prox LAD occlusionsevere triple vessel diseasediffuse subendocardial ischaemia (ie. post resuscitation)

• aVR records electrical activity right upper portion of heart, including RVOT and basal IV septum

Anterior STEMI equivalentST depression and peaked T waves in precordial leadsSeen in ~ 2% acute LAD occlusionsYounger / male / hypercholesterolaemia

Code STEMI

Page 64

De Winter’s T wave

Middle aged female presents with dyspnoea, prior mastectomy for breast cancer.

Page 65

Middle aged female presents with dyspnoea, prior mastectomy for breast cancer.

Page 66

QRS alternans – pericardial effusion

Page 67

Ventricular flutter

Ventricular flutter

•Continuous monomorphic sine wave•No identifiable P, QRS or T wave•Rate >200•Extreme form of VT•Rapid degeneration into VF

Page 68

Bradyarrhythmias (any)Osborn waves (= J waves = positive deflection at J point)Prolonged PR, QRS and QTShivering artefactVPBsCardiac arrest due to VT, VF or asystole

Page 69

Hypothermia

BradycardiaLow QRS voltageWidespread T wave inversionQT prolongationFirst degree AV blockIVCDs

Myxoedematous deposits in myocardiumDecreased SNS activityLess thyroxine – decreased inotropy / chronotropy

Page 70

Hypothyroidism

The End

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