Chapter 21 electrocardiography

Question 1

what are the 2 types of cardiac cells?

Answer 1

1. myocardial
2. pacemaker

Question 2

an instrument that measures the waves of electrical impulses responsible for the cardiac cycle

Answer 2

electrocardiograph

Question 3

ECG paper commonly runs at __ __ per second

Answer 3

25 mm

Question 4

a positive or negative electrical state

Answer 4

polarity

Question 5

abnormal heart rhythm

Answer 5

arrhythmia

Question 6

placement outside the usual location

Answer 6

ectopy

Question 7

cardiodynia/cardialgia

Answer 7

pain in the heart

Question 8

what are the waves of an ECG?

Answer 8

P, Q, R, S, T, U

Question 9

transmission of ECG signals via radio waves

Answer 9

telemetry

Question 10

an electrical wire between a specific combination of sensors attached to the body

Answer 10

lead

Question 11

a device that detects electrical signals

Answer 11

electrodes

Question 12

what are the 3 types of electrodes?

Answer 12

1. metal plate
2. suction bulb
3. disposable

Question 13

on an ECG tracing, an indication of the absence of electrical charge/activity represnts

Answer 13

baseline

Question 14

what type of heart rhythm is represented by the activity of the heart being within normal limits

Answer 14

sinus