EKG and Heart

Question 1

The Right Atrium receives _______ blood from the ____ and _____ vena cava.

Answer 1

Deoxigenated blood from the superior and inferior vena cava.

Question 2

The Left Atrium receives _________ blood from the _______ veins.

Answer 2

oxigenated blood from the pulmonary veins (the only veins in body that carry oxigenated blood.)

Question 3

The Right Ventricle receives blood from the __________ and sends __________ blood through the _____ artery to the _______.

Answer 3

Right Artium and sends deoxigenated blood through the pulmonary artery to the Lungs. (for co2/o2 exchange - Pulmonary circuit)

Question 4

The Left Ventricle receives ____ blood from the _____ Atrium and sends it through the _____ valve into _____.

Answer 4

Oxigenated blood from the Left atrium. Sends it through the aortic valve into aorta. (Where it branches off into smaller arteries - systemic circuit.)

Question 5

EKG graph vertical axis represents _______.

Answer 5

Gain or amplitude.

Question 6

EKG graph horizontal axis displays ________.

Answer 6

Time.

Question 7

Leads I, II, and III are _____________.

Answer 7

Bipolar

Question 8

Leads AVL, AVR, and AVF are ______.

Answer 8

Unipolar.

Question 9

Precordial lead wires are located where?

Answer 9

On the chest in front of the heart.

Question 10

White lead goes where?

Answer 10

Right arm.

Question 11

Black lead goes where?

Answer 11

Left arm.

Question 12

Red lead goes where?

Answer 12

Left leg.

Question 13

Green lead goes where?

Answer 13

Right leg.

Question 14

Precordial leads can be what color?

Answer 14

brown or multi-colored.

Question 15

V1 color and placement:

Answer 15

Red - Right side of sternum at 4th intercostal space.

Question 16

V2 color and placement:

Answer 16

Yellow - L side of sternum across from V1 at 4th intercostal space.

Question 17

V3 color and placement:

Answer 17

Green - Left side of the chest midway between V2 and V4 (place V4 first)

Question 18

V4 color and placement:

Answer 18

Blue- Left side of chest, 5th intercostal space, midclavicular (nipple) line.

Question 19

V5 color and placement:

Answer 19

Orange - Left side of chest, 5th intercostal, anterior axillary line (next to V4).

Question 20

V6 color and placement:

Answer 20

Purple - Left side of chest, 5th intercostal, mid axillary line (next to V5)

Question 21

P wave is :

Answer 21

First in cardiac cycle, shows depolarization (contraction) of atria.

Question 22

QRS Wave or QRS Complex is:

Answer 22

The 2nd wave in the cardiac cycle representing ventricular depolarization (contraction.)

Question 23

Repolarization is :

Answer 23

relaxation of heart muscles.

Question 24

T wave is:

Answer 24

Third wave in cardiac cycle representing ventricular repolarization.

Question 25

Bundle of His is:

Answer 25

A collection of fibers that conduct the electrical impulses from the AV node to the ventricular septum.

Question 26

Purkinje fibers are:

Answer 26

The fingerlike projections that spread through the ventricular muscle and initiate ventricular contraction.

Question 27

P-R Interval is :

Answer 27

The length of time from atrial to ventricular depolarization

Question 28

Source of electrical conduction and what makes th “P” wave in EKG:

Answer 28

SA Node (sino-atrial ) makes sinus rhythm

Question 29

The GAIN of the paper on an EKG (If asked to calculate an image)

Answer 29

10 mm/mv (can be turned down to 5mm/mv) PAPER DOES NOT SLOW …Instrument spreads out rhythm

Question 30

Qt interval is:

Answer 30

The length of time from the beginning of ventricular depolarization to end of ventricular repolarization.

Question 31

ST segment is:

Answer 31

The length of time from end of ventricular depolarization to the beginning of ventricular repolarization.

Question 32

Somatic Tremor is:

Answer 32

Irregular spikes in EKG from patient movement/shivering/trembling.

Question 33

Wandering baseline in EKG is a result of:

Answer 33

Poor electrode connection.

Question 34

Interrupted baseline in EKG is due to:

Answer 34

Disconnected/broken lead wire.

Question 35

If the QRS appears wide and bizarre in the EKG you can suspect:

Answer 35

Premature ventricular Contractions (PVC’s) or ventricular arrhythmias.

Question 36

What is the SPEED of EKG paper?

Answer 36

25 mm/sec (can be turned down to 50 mm/sec) PAPER DOES NOT SLOW. Instrument spreads out.

Question 37

J point in EKG is:

Answer 37

Where s connects to T (looks like a “J”)

Question 38

Normal PR Interval time is:

Answer 38

0.12 - 0.2 seconds.

Question 39

Normal QRS Interval time is:

Answer 39

0.04 - 0.10 seconds.

Question 40

Normal QT Interval time is:

Answer 40

0.30 - 0.52

Question 41

1500 Method of Calculating Ht Rate is:

Answer 41

SMALL horizontal boxes are counted (as 1 each) between two R waves. Then 1500 is divided by that number to get Ht rate.

Question 42

300 Method (Sequence) of calculating Ht rate is:

Answer 42

Memorize sequence 300, 150, 100, 75, 60. Count BIG boxes between two R waves, using this sequence. That is HT rate.

Question 43

6 Second Method of calculating HT rate is:

Answer 43

Use a 6 second strip. Count each QRS Interval in the strip. That number is the HT rate.

Question 44

Tabs on arms and chest point _____. On legs point _____.

Answer 44

Down. Up.