ECG

Question 1

Loss of P wave/inverted P wave, slow ventricular rate:

Answer 1

Junctional rhythm

Question 2

Broad, notched P waves in Lead II

Answer 2

Atrial enlargement, A fib

Question 3

Absent P waves, irregularly irregular rhythm

Answer 3

AFib

Question 4

Short PR interval and delta wave

Answer 4

WPW syndrome

Question 5

Significant Q wave

Answer 5

Previous MI

Question 6

Wide QRS complex, Rabbit ears in Lead I

Answer 6

RBBB

Question 7

Low voltage QRS complex

Answer 7

Pericardial effusion

Question 8

QRS prolonged with notched or slurred morph (Lead I, V5,V6)

Answer 8

LBBB

Question 9

Widest QRS

Answer 9

BBB

Question 10

Prominent R waves in V5 and V6

Answer 10

LV hypertrophy

Question 11

Tall R wave in V1

Answer 11

RV hypertrophy

Question 12

Shortened QT interval

Answer 12

Hypercalcemia (fast ventricular repolarization)

Question 13

Prolonged QT interval

Answer 13

hypocalcemia, ventricular arrhythmia

Question 14

Widespread ST segment elevation

Answer 14

Pericarditis

Question 15

ST segment depression

Answer 15

Myocardial ischemia

Question 16

Elevated ST

Answer 16

MI

Question 17

Inverted T wave

Answer 17

MInfarction/MIschemia

Question 18

Peaked T wave

Answer 18

Hyperkalemia

Question 19

U waves

Answer 19

Hypokalemia, purkinje fiber repolarization

Question 20

Leads to lateral side of the heart

Answer 20

Lead I, avL, V5, v6

Question 21

Leads: Inferior

Answer 21

Lead II, Lead III, avF

Question 22

Leads: Septal

Answer 22

V1, V2

Question 23

Leads: Anterior

Answer 23

V3,V4

Question 24

10 small line/boxes divisions upward or downward in standard ECG represents

Answer 24

1 mV

Question 25

25 mm (horizontal) (big boxes) in ecg is equivalent to

Answer 25

1 sec. (0.4 sec each small box)
0.4x5 = 0.20sec (1 big box) = 5mm segment
0.20 sec x 5 big box = 1 second