12 LEAD ECG

HOW MANY LEADS IN 12 LEAD ECG

• 12

• 10

• 5

• 3

3 Limb leads are?

• (I, II, III)

• (aVR, aVL, aVF)

• (V1- V6)

Precordial leads

• (I, II, III)

• (aVR, aVL, aVF)

• (V1- V6)

How to diagnosed ST Elevation in ECG ?

• greater than 2 small box) in 2 leads is consistent with a myocardial infarction.

• greater than 11/2 small box) in 2 leads is consistent with a myocardial infarction.

• greater than 1 small box) in 2 leads is consistent with a myocardial infarction.

• greater than 1/2 small box) in 2 leads is consistent with a myocardial infarction.

Inferior Ami can be diagnosed by looking ECG

• 11 ,111, AVF

• V1-V2

• AVL , 1 , V5-V6

• V1-V4

ANTERIOR Ami can be diagnosed by looking ECG

• 11 ,111, AVF

• V1-V2

• AVL , 1 , V5-V6

• V1-V4

Posterior Ami can be diagnosed by looking ECG

• 11 ,111, AVF

• V1-V2

• AVL , 1 , V5-V6

• V1-V4

Normal cardiac axis range is ?

• -30 to + 90

• +30 to - 90

• -120 to + 90

• +120 to - 90

•Right axis is?

• Both I and aVF +ve

• Lead I –ve, aVF +ve

• Lead I +ve, aVF –ve

• Both lead I and aVF -ve

•Left axis is?

• Both I and aVF +ve

• Lead I –ve, aVF +ve

• Lead I +ve, aVF –ve

• Both lead I and aVF -ve