the basic’s of a 12 lead ecg...the basic’s of a 12 lead ecg author kalah banneel created date...

STEMI

NSTEMI

Still a MI however no ST changes will be seen. Bloods will show an increase in troponin

indicating damage to the myocardium. Can have T wave changes and ST depression

ST Depression

Usually happens in patients with stable angina and is seen when exercising

URGENT ECGs

1. Arrhythmias

- Ventricular fibrillation

Ventricular tachycardia

2. Pauses

- Sinus arrest

- Asystole

Have a go

5 ECGs

Measure the heart rate, rhythm and any

abnormalities you can spot

Answers 1. Inferior STEMI

Obvious ST elevation in leads II, III and aVF. Reciprocal changes of ST depression seen

Slight elevation in other leads: Indication of a severe widespread MI

HR 90bpm.

2. Sinus tachycardia

Heart rate of approx. 144bpm (24 times 6). Everything else is all within normal limits.

3. Atrial fibrillation

Irregularly irregular- no pattern. HR 78bpm.

4. Right bundle branch block with a long PR interval

‘RSR’ pattern in V1. QRS widen (approx. 160ms). PR interval prolonged (approx. 320ms - 8 small squares times 40). HR 72bpm

(12x6)

5. Sinus rhythm with Ves

Normal rate, normal complexes just a couple of ventricular ectopic's. HR 54bpm.

Questions?