EKG - Exam 1

Question 1

ST segment depression is characteristic of

Answer 1

typical angina and non-Q wave infarction

Question 2

What are 3 causes of ST segment elvation?

Answer 2

Prinzmetal angina
evolving myocardial infarction
J point elevation

Question 3

_______ signifies irreversible damage to the myocardium

Answer 3

Q wave formation

Question 4

______ is the earliest EKg change seen during an acute infarction

Answer 4

T wave peaking

Question 5

The P wave is biphasic in lead _____ and _____

Answer 5

lead III and V1

Question 6

What lead are you most likely to see a small septal Q wave?

Answer 6

Lead I

Question 7

The six precordial leads view the electrical forces in the heart moving _____ to ______

Answer 7

Anteriorly to posteriorly

Question 8

Name this wave pattern

Answer 8

RSR’ (RSR prime)

Question 9

Normal electrical conduction through the heart pauses for a fraction of a second at ______

Answer 9

AV node

Question 10

The time from the start of ventricular depolarization to the end of ventricular depolarization is defined by the _____

Answer 10

QRS interval

Question 11

Spontaneous pacemaking ability resides in ???

Answer 11

Sinus, AV and myocardial cells

Question 12

What do the waves seen on the EKG reflect?

Answer 12

depolarization and repolarization of the heart