hypertrophy, atrial enlargements etc.

Question 1

P pulmonale

Answer 1

Right atrial enlargement produces a peaked P wave (P pulmonale) with amplitude:

From Ekg book:
Amplitude of first portion (right atrium) increases- >
-> 2.5 mm in the inferior leads (II, III and AVF)
> 1.5 mm in V1 and V2

*NO change in width.

Question 2

P mitrale

Answer 2

-> Second portion of P wave (left atrium) amplitude can increase, so does the duration)

• > P wave negative delection in V1 should pass 1mm below isoelectric line.
• > Duration of P wave increases (1 block at least of last terminal portion)

Question 3

normal P wave

Answer 3

P wave duration is less than 0.12sec (3 small boxes)
larget deflection (positive or negative) should not pass 2.5mm (2 and a half small squares)

Question 4

S(lead I)Q(lead III)

Answer 4

Relative specific indicator for pulmonary embolism…