ECG

Question 1

P pulmonale

Or peaked P waves are seen in

Answer 1

Right Atrial Enlargement / RAE

Question 2

P mitrale

Prominent notching of p-wave

Answer 2

Left atrial enlargement/ LAE

Question 3

Peaked p waves have an amplitude of

Answer 3

> 0.25 mV or >2.5 small boxes

Question 4

Prolonged p wave duration in lead II = >___ small boxes or second

Answer 4

> 0.12 sec or >3 small boxes

Question 5

2 important criteria for left ventricular hypertrophy

Answer 5

Sokolow-Lyon criteria

Cornell criteria

Question 6

Sokolow-Lyon criteria formula

Answer 6

[S in V1] + [R in V5 or V6] = sum > 35 mm

R in aVL > 1 mm

Question 7

Cornell criteria formula

Answer 7

[S in V3] + [R in aVL)
Female : >/= 20 mm
Male : >/= 28 mm

Question 8

What condition is suspected when the ratio between the duration of the p-wave in lead II and duration of PR segment >1.6

Answer 8

Left atrial enlargement/ abnormality

Question 9

the p wave is best examined in what classification of leads

Answer 9

Inferior leads (II, III, aVF)
And V1 and V2 (septal)

Question 10

In ___ the p wave is characteristically tall (or has prominently positive initial portion in lead V1)

Answer 10

RAA

Question 11

The p wave is wide and notched / bifid in lead II
Biphasic p wave
Prominently negative terminal portion in lead V1

Answer 11

LAA

Question 12

Criteria for right ventricular hypertrophy

Answer 12

R in V1 >/= 7 small boxes (0.7 mV)
S1-Q3 pattern
S1-S2-S3 pattern
S in V5 or V6 >7 small boxes (0.7 mV)
Right axis deviation (>90 degrees)

Question 13

Transient ST depressions is an ecg finding in

Answer 13

Subendocardial ischemia
(Non-infarcted)

Question 14

ST depressions
T wave inversions
No Q-waves

Answer 14

Non ST Elevation MI

NSTEMI

Question 15

ST-Elevation MI

Answer 15

Hyperacute T-waves and ST elevations
T-wave inversions
Development of Q-waves

Question 16

ST depression criteria

Answer 16

1. NEW horizontal or downslowping ST depression >/= 0.05 mV (0.5 small box) in 2 contiguous leads (___ ischemia)
2. ST depression >/= 0.1 mV (1 small box) in 8 or more surface leads + ST elevation in aVR and/or V1 = left main obstrction

Question 17

T wave inversion criteria

Answer 17

T wave inversion >/= 0.1 mV (> 1 small box)in 2 contiguous leads with a prominent R wave or R/S ratio >1

Question 18

Junction of QRS complex and ST segment

Answer 18

J-point

Question 19

New ST segment elevation criteria

Answer 19

All leads (except V2-V3) ) >/= 1 mm elevation
For V2 and V3 leads:
Male
<40 y/o: >2 mm elevation
>40 y/o >2.5 mm elevation
Females
>1.5 mm elevation

Question 20

For inferior wall MI usually has concomitant ____ infarction

Answer 20

RV infarction

Question 21

How to indentify RV infarction

Answer 21

Order ECG with V3R and V4R right precordial leads

Question 22

For ST-depression in V1-V3 (esp with positive terminal T wave): ST elevation >/=0.5 mm (1/2 small square) in leads V7-V9 signifies

Answer 22

Posterior wall MI

Question 23

P wave is usually upright in leads

Answer 23

Lead II, I , aVF, and aVL

Question 24

AV junction as pace maker

bpm

Answer 24

40-60 bpm

Question 25

His-Purkinje system pacemaker

Answer 25

20-40 bpm