Watwaeto's Legacy

* unifocal PVC
* Bizzare shaped QRS
* absence of P wave
* Irregular contraction
* premature contraction

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* Multifocal PVC


* Multiple shapes of QRS


* absence of p wave


* irregular contraction
* premature contraction

* Sinus tachycardia


* Regular rhythm


* p wave present
* ectopic focus

* Atrial Fibrillation
* Heart rate: A =350-650 BPM
* Heart rate: v= slow to rapid
* irregular rhythm
* Fibrillatory QRS (fine to course)
* PR internval absent
* QRS < 0.12 sec (120 ms)

* Atrial flutter
* Heart rate: A=220-430 BPM
* Heart rate: V

* Ventricular Tachycardia
* Heart rate:

* Ventricular Fibrillation
* Heart rate: 300-600
* Rhythm: extremely irregular
* P wave absent
* PR interval absent
* QRS: fibrillatory baseline
* extremely emergent

* Sinus bradycardia
* Heart rate

* First degree AV block
* P wave identical before each QRS
* PR interval > 0.20 sec (>200 ms)
* QRS >0.12 sec (>120 ms)
* Regular rhythm

* Second degree AV block
* Mobitz 1
* Wenckebach
* P wave: conduction intermittant
* PR interval : increasingly prolonged
* QRS < 0.12 sec
* QRS dropped in repeating pattern “missing”

* Third degree AV block (complete)
* P wave: normal but not related to QRS
* PR interval: absent
* QRS: absent
* No relationship between P & RS

* LBBB - Left bundle block branch
* QRS inverted and wide ( lead V1 ) ( W shaped )
* M - shaped QRS ( lead V6) and inverted & wide T-wave

* RBBB - Right bundle branch block
* M- shaped QRS in V1 (inverted)
* Inverted T-wave
* Deep S-wave in V6

* Interior MI (miocardial infarction)
* No ST elevation in leads ( II, III, VaF)
* Multiple ST elevations in leads V1 - V6 تلال كتييير

* Inferior MI
* ST Elevation (leads II, III, VaF) تلة تلة تلة هنا و هناك

* regular rhythm
* Absence of p-wave

supraventricular tachycardia

1500 = no, of square / small squares

Regular Heart rate

Lead I, II, III

Bipolar leads