Introduction to Dysrhythmias (Exam 2)

Question 1

What drives the mechanical pumping of the heart?

Answer 1

The electrical conduction

Question 2

What initiates electrical conduction in the heart

Answer 2

The SA node

Question 3

Where is the SA node located and what is it’s intrinsic rate?

Answer 3

SA node is located in the right atrium and has a rate of 60-100 beats per min

Question 4

After the SA nodes fires what happens next?

Answer 4

The atria contracts and the impulses travels to the AV node

Question 5

What causes the ventricles to contract?

Answer 5

The nerve impulse traveling through the AV to the bundle of his / purjinke fibers

Question 6

Dysrhythmias are defined as

Answer 6

Abnormal cardiac rhythms

Question 7

Electrocardiogram Monitoring is

Answer 7

Graphic tracing of electrical impulses produced by the heart

Question 8

The wave forms of EKG represent

Answer 8

activity of charged ions across membranes of myocardial cells

Question 9

Normal Electrical Pattern of the Heart

Answer 9

P wave (atrial contraction) (depolarization)

PR interval (impulse through AV node)

QRS complex (ventricular contraction) (depolarization)

ST segment

T wave (ventricular relaxation) (Repolarization)

Question 10

What is the RR interval?

Answer 10

The tip of one R to the tip of the other R

Question 11

What is the normal PR interval?

Answer 11

0.12 - 0.20

Question 12

If PR interval is not within normal range it suggest

Answer 12

That is a problem between atria and ventricle

Question 13

What is the normal QRS interval?

Answer 13

<0.12

Question 14

Isoelectric line

Answer 14

Can be indicative of ST elevated MI

ST segment should = isoelectric line

Question 15

ST segment is elevated above isoelectric line and troponin is elevated =

Answer 15

STEMI

Question 16

ST is not elevated above isoelectric line and troponin is elevated =

Answer 16

NSTEMI

Question 17

Each little box on EKG =

Answer 17

0.04 seconds

Question 18

Each large box on EKG =

Answer 18

.20 seconds

Question 19

Rhythm Strips are always

Answer 19

6 seconds (3 second interval between the two bars)

Question 20

Telemetry

Answer 20

Continuous monitoring only unidimensional view

Question 21

Telemetry Lead Placement

Answer 21

Snow on the grass
smoke over fire
and chocolate next to my heart

WHITE IS RIGHT

Question 22

What is the most come telemetry lead?

Answer 22

Lead 2

Question 23

Typical Telemetry Patient

Answer 23

Lead 1 = Reading right shoulder to left shoulder

Lead 2 = Reading right shoulder to left groin

Lead 3 = Left shoulder to left groin

Question 24

Telemetry monitoring

Answer 24

Continuous observation of HR and rhythm at a distant site

Sophisticated alarm system alerts dysrhythmias detected

Question 25

12 Lead EKG

Answer 25

Snapshot in time routine or STAT multidimensional view Can be done to diagnose

Question 26

Contiguous Leads

Answer 26

means that two leads are next to each other anatomically

Question 27

Patient with ST elevation in two contiguous leads

Answer 27

Indicates patient is having or has had a STEMI

Question 28

What is artifact?

Answer 28

Irregularly electrical conduction but is not the patient Could be muscle tremor or loose electrodes or battery running low