Chapter 25&49 SG

studied byStudied by 56 people
5.0(1)
get a hint
hint

What is an ekg/ecg?

1 / 32

Tags and Description

Health

11th

33 Terms

1

What is an ekg/ecg?

The process by which a graphic pattern is created from the electrical impulses generated within the heart as it pumps.

New cards
2

In order, what is the pathway of electrical impulses through the heart?

SA Node, AV Node, Bundle of his, Purkinje fibers

New cards
3

What is known as the pacemaker of the heart and why?

The SA node because it triggers a sequence of electrical events in the heart

New cards
4

What is depolarization?

the orderly passage of electrical current sequentially through the heart muscle, changing it, cell by cell, from the resting polarized state to the depolarized state

New cards
5

What are leads?

a graphical description of the electrical activity of the heart and it is created by analyzing several electrodes.

New cards
6

What is an artifact?

electrocardiographic alterations, not related to cardiac electrical activity.

New cards
7

Poor skin preparation, dangling wire, or breathing movement creates what type of artifact?

Wandering Baseline

New cards
8

What are the specific locations of the chest leads

V1: 4th intercostal space (ICS), RIGHT margin of the sternum V2: 4th ICS along the LEFT margin of the sternum V4: 5th ICS, midclavicular line; V3: midway between V2 and V4; V5: 5th ICS, anterior axillary line; V6: 5th ICS, mid-axillary line

<p>V1: 4th intercostal space (ICS), RIGHT margin of the sternum V2: 4th ICS along the LEFT margin of the sternum V4: 5th ICS, midclavicular line; V3: midway between V2 and V4; V5: 5th ICS, anterior axillary line; V6: 5th ICS, mid-axillary line</p>
New cards
9

What is stress testing?

an exercise stress test, shows how your heart works during physical activity.

New cards
10

What is a holter monitor?

a small, wearable device that records the heart's rhythm. It's used to detect or determine the risk of irregular heartbeats (arrhythmias).

New cards
11

What is forced vital capacity?

(FVC) is the total amount of air exhaled during the FEV test.

New cards
12

What are the letters of the deflections on an ecg tracing?

P wave (atrial depolarization ) QRS complex (ventricular depolarization) T wave (ventricular repolarization). U wave ( Purkinje repolarization),

New cards
13

What does the P wave represent?

The P wave represents the electrical depolarization of the atria.

New cards
14

What does the QRS complex on an ecg represent?

ventricular depolarization.

New cards
15

What portion of the limbs should the electrodes be placed on?

On the fleshy part of the limbs

New cards
16

What position for an ecg should be used if the patient is uncomfortable lying flat?

Semi-Fowler's

New cards
17

What causes somatic tremor?

caused by patient movement, even shivering or chewing gum

New cards
18

What are the peak flow zones, and what do they indicate?

Green zone: Your asthma is well-controlled. Yellow zone: Your asthma is getting worse or is poorly controlled Red zone: Your asthma is severe. It requires emergency care.

New cards
19

When is pressure in the arteries the greatest?

when blood is pumped out of the heart into the arteries.

New cards
20

Pericardium

Membrane that encloses the heart.

New cards
21

Myocardium

Middle layer of the heart, is the thickest layer of the wall and is primarily made up of cardiac muscle, which makes it the working layer of the heart.

New cards
22

Atherosclerosis

A disease of the arteries characterized by the deposition of plaques of fatty material on their inner walls.

<p>A disease of the arteries characterized by the deposition of plaques of fatty material on their inner walls.</p>
New cards
23

Aneurysm

a bulge in a blood vessel caused by a weakness in the blood vessel wall, usually where it branches

<p>a bulge in a blood vessel caused by a weakness in the blood vessel wall, usually where it branches</p>
New cards
24

Where is the bicuspid valve located?

Located between the left atrium and left ventricle.

New cards
25

Where is the aortic semilunar valve located and what does it do?

Is located between the left ventricle and the aorta. It prevents blood from flowing back into the left ventricle

New cards
26

What do capillaries connect?

They are the connecting vessel between the arterioles of the arterial system and venules of the venous system.

New cards
27

Increased cardiac output causes what?

It causes an increase in blood pressure

New cards
28

How does vasoconstriction affect blood pressure?

-If blood pressure falls too low, the muscular walls of the arteries can constrict to increase blood pressure.

New cards
29

What are symptoms of a pulmonary embolism?

Shortness of breath, Chest pain, and Cough, which may contain blood. Leg pain or swelling. Back pain, Excessive sweating. Lightheadedness, dizziness, Bluish lips or nails.

New cards
30

What type of chest pain occurs during movement?

Costochondritis causes chest pain, felt at the front of the chest.

New cards
31

What might chest pain that increase when bending over be?

People with heartburn or a pulmonary embolism may experience worsening chest pain when bending forward.

New cards
32

What is the purpose of the chordae tendineae?

a group of tough, tendinous strands in the heart. Play a vital role in holding the atrioventricular valves in place while the heart is pumping blood.

New cards
33

Identify the blood flow through the heart, and name the structures?

1)body 2) inferior/superior vena cava 3) right atrium 4) tricuspid valve 5) right ventricle 6) pulmonary arteries lungs 8) pulmonary veins 9) left atrium 10) mitral or bicuspid valve 11) left ventricle 12) aortic valve 13) aorta

New cards

Explore top notes

note Note
studied byStudied by 10 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 7 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 7 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 16 people
Updated ... ago
5.0 Stars(2)
note Note
studied byStudied by 4 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 3 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 8 people
Updated ... ago
5.0 Stars(1)
note Note
studied byStudied by 2637 people
Updated ... ago
5.0 Stars(5)

Explore top flashcards

flashcards Flashcard124 terms
studied byStudied by 87 people
Updated ... ago
4.4 Stars(7)
flashcards Flashcard100 terms
studied byStudied by 17 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard101 terms
studied byStudied by 2 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard45 terms
studied byStudied by 10 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard94 terms
studied byStudied by 6 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard120 terms
studied byStudied by 36 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard35 terms
studied byStudied by 12 people
Updated ... ago
5.0 Stars(1)
flashcards Flashcard74 terms
studied byStudied by 3 people
Updated ... ago
5.0 Stars(1)