Normal EKG

Question 1

In what leads is the P wave upright?

Answer 1

1,2, V4-V6, & AVF

Question 2

In what leads is P wave inverted?

Answer 2

Inverted; AVR

If upright, indicates a nodal or junctional rhythm

Question 3

In what leads is the P Wave variable?

Answer 3

3, AVL, and other leads

Question 4

PR Interval is defined as?

Answer 4

Beginning of P wave to beginning of QRS complex

Time: 0.12-0.20 seconds

Question 5

QRS complex is defined as ?

Answer 5

Ventricular depolarization; 0.05-0.10 seconds in duration

Question 6

What does a QRS complex duration of greater than 0.12 seconds indicate?

Answer 6

BBB or Ventricular Hypertrophy

Question 7

Q Waves; they are narrow and small, usually seen in what leads?

Answer 7

Lead I, AVL, AVF, V5, V6

Question 8

If a Q wave is not seen in AVF, V5, and V6; what is indicated?

Answer 8

LBB

Question 9

What does a depressesd ST Segment indicate?

Answer 9

Sub endocardial injury

Question 10

What does an elevated ST segment indicate?

Answer 10

Subepicardial or trans mural injury or ischemia

Question 11

T wave height is not greater than what in precordial leads & standard leads?

Answer 11

Precordial Leads: < 10 mm

Standard Leads: < 5mm

Question 12

What should the width of the QRS complex be?

Answer 12

Less than 50% of the R-R interval

Question 13

ST Segment depression also normally occurs in what case?

Answer 13

After exercise

Question 14

ST Segment elevation is considered to be normal in what case?

Answer 14

Possible w/ healthy african american men