mod 1

Question 1

p wave

Answer 1

atrial depolarization

conduction of electrical impulses through the atrium

Question 2

P-R interval

Answer 2

electrical impulse from the SA node to the AV node

Question 3

QRS

Answer 3

ventricle depolarization

electrical impulse through the ventricle

Question 4

Q-T interval

Answer 4

Ventricle depolarization to repolarization

Question 5

S-T seg

Answer 5

end of the QRS and beginning of T wave

Question 6

T wave

Answer 6

repolarization of the ventricles

Question 7

U wave

Answer 7

purkinje fibers repolarization

not seen unless K is low

Question 8

depolarization

Answer 8

is the electrical action of a cell caused by influx of sodium into the cell while potassium exits the cells

Question 9

repolarization

Answer 9

is the return of the cell to a resting state caused by reentry of potassium into the cell while sodium exits

Question 10

what rate does the SA node fire at?

Answer 10

60- 100 bpm

Question 11

what rate does the AV node fire at?

Answer 11

40- 60 bpm

Question 12

what is the s4 called and what is it associated with?

Answer 12

the s4 is heard before the s1 (lub lub dub) and is call an arterial gallop, it is associated with hypertensive heart disease

Question 13

what sound could you here after the s1 and s2?

Answer 13

the s3 a ventricle gallop ( lub dub dub) it is associated with heart failure

Question 14

when would you hear a harsh grating sound when auscultating the heart?

Answer 14

the harsh grating sound is called a friction rub and can be heard when the patient has pericarditis

Question 15

what is normal central venous pressure?

Answer 15

2-6 mm hg

Question 16

A central venous pressure grater then 6 would indicate what?

Answer 16

hypervolemia

Question 17

what should the nurse ask the patient prior to a cardiac catheterization?

Answer 17

do you have an allergy to shell fish?

Question 18

How do you test for orthostatic hypotension?

Answer 18

1. position the pt in the supine position for 10 min take HR and BP
2. reposition the pt in the sitting position wait 2 min and take HR and BP
3. if the pt ia symptom free reposition into the standing position take HR and BP recheck every 2 min for mins.

Question 19

how do you know if the pt has orthostatic hypotension?

Answer 19

they will have a decrease in b at least 20mm hg in systolic and 10mm hg in diastolic

Question 20

do Transdermal nitro patch need to be removed be for a MRA?

Answer 20

yes, they contain a heat conducting aluminizer that will burn the skin

Question 21

a BNP greater then 100 is suggestive of what?

Answer 21

heart failure

Question 22

what two thing should be evaluated for effectiveness of this of warfarin?

Answer 22

PT and INR

Question 23

What should you teach a patient with a new pacemaker?

Answer 23

to check pulse daily and report increases or decrease
to avoid hand held medal detectors
wear a medical bracelet
no MRIs

Question 24

How long does it take CPK- MB to elevate?

Answer 24

12- 24 hours

Question 25

How long dose it take troop in to elevate?

Answer 25

1-2 hours

Question 26

what will you see on a ECG if the patient has to much K?

Answer 26

peaked T waves

Question 27

What is given to treat bradycardia?

Answer 27

atropine

Question 28

if the nurse sees a ventricle rate between 250 and 400 with a saw tooth pattern on the ECG what could this mean?

Answer 28

atrial flutter

Question 29

How long is a normal QT interval?

Answer 29

0.34 to 0.40

Question 30

if a QT interval becomes to long what is the PT at risk for developing?

Answer 30

torsades de points