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ventilation/perfusion handout, Test 1-respiratory nur 195 prep u practice fully solved $19.99   Add to cart

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ventilation/perfusion handout, Test 1-respiratory nur 195 prep u practice fully solved

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ventilation/perfusion handout, Test 1-respiratory nur 195 prep u practice fully solved

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  • August 2, 2024
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ventilation/perfusion handout, Test 1-
respiratory nur 195 prep u practice
what factors affect respiratory function? - correct answer ✔✔body positions-sitting up , lying down

environment-air pollution-industrialized, cars, carbon monoxide, plan workers



pollens-allergens: pollutants, asthma, chemicals, alleges



lifestyle habits: smoking, eking,

-drugs, alcohol

nutrition: cannot detect hemoglobin, plasma proteins, poverty an eating , limited chest movement
obest-thin malnourished



stress/anxiety: psychological-hyperventilation cause lit headed and tingling

medications: barbiturates, narcotics, sedatives

-barbit: slow respirations emphysema=low smooth muscle



physical abnormalities: ateclasis



disease process: restricted lung movement and airway obstruction: smooth muscle tone,
bronchospasm/asthma



mask - correct answer ✔✔nasal can



vent. mask



simple mask

,reservoir



nasal cannula - correct answer ✔✔22-44% -1 l-6l



1. most used for comfort and convienecne

2. rule of four-1 lit= 22% and add 4

3. limit o2 to 6l due to drying of nasal- use humidifer

4. patent nasal passages

5. 02 concentration will vary patient of residents breathing



venturi mask - correct answer ✔✔24-50% 3-8l



1.most precise for delivering o2

2.essential to adjust mask to ensure o2 delivery



NOISY/LOUD

CAN CAUSE CLAUSTROPHIA



Simple mask - correct answer ✔✔40-60% ,6-10l



most common midrange o2

min of 5l o2 to prvent patient breathing exhale CO2



*DO NOT USE IN COPD PATENTS DUE TO EXCESSIVE CO2



Non rate :Reservoir mask - correct answer ✔✔up 90% operated 10-15%

1. USED ON CRITICALLY ILL PATIENTS

2. Use sufficient flow to keep 02 reservoir inflated

,Describe the process of gas exchange - correct answer ✔✔ventilaion process of moving air ino and of
lungs



perfusion - correct answer ✔✔blood flow to aleololi so fases can be exchanged



diffusion - correct answer ✔✔movement of gas from area of high concentration to lower



Normal ranges - correct answer ✔✔are below 120/80 mm Hg.



Stage 1 - correct answer ✔✔is characterized by readings of 140-159 mm Hg systolic or 90-99 mm Hg
diastolic.



Stage 2 - correct answer ✔✔is characterized by readings of 160 mm Hg or higher systolic or 100 mm Hg
diastolic.



prolonged decrease in cerebral blood flow and perfusion. Which finding would the nurse expect to
assess? - correct answer ✔✔Confusion

• Fatigue

• Listlessness

• Slurred speech



Heparin - correct answer ✔✔is an anticoagulant that may be ordered as prophylaxis for deep vein
thrombosis



. Digoxin - correct answer ✔✔is a cardiac glycoside used to increase cardiac contractility and decrease
heart rate.



Nitroglycerin is a - correct answer ✔✔Nitroglycerin is a drug used to relieve angina pain.



Amiodarone - correct answer ✔✔is a drug used to regulate heart rhythm

, ventricles - correct answer ✔✔eject blood, systole



corornary - correct answer ✔✔chambers fill up, diastole, heart muscle relaxes



The epicardium - correct answer ✔✔is a thin-walled sac that surrounds the heart and attaches it to the
diaphragm and sternal wall of the thorax



. The septum - correct answer ✔✔is the strong muscular wall that divides the heart into left and right
halves.



The endocardium - correct answer ✔✔is the innermost lining of the heart.



The myocardium - correct answer ✔✔is the thick muscular layer that produces muscular contraction of
the heart.



High or increased compliance - correct answer ✔✔occurs if the lungs have lost their elasticity (cannot
return to normal state) and the thorax is overdistended, as in emphysema.



Low or decreased compliance - correct answer ✔✔occurs if the lungs and thorax are "stiff" (difficult to
stretch). Conditions associated with decreased compliance include pneumothorax, hemothorax, pleural
effusion, pulmonary edema, atelectasis, pulmonary fibrosis, and acute respiratory distress syndrome
(ARDS).

-Chest percussionw/ pleural effusion reveals dullness over the involved area. The nurse may note
diminished or absent breath sounds over the involved area when auscultating the lungs and may also
hear a friction rub. Chest radiography and computed tomography (CT) scan show fluid in the involved
area.

*may be a complication of pneumonia, lung cancer, TB, pulmonary embolism, and CHF.*

-A tension pneumothorax causes the lung to collapse and the heart, the great vessels, and the trachea to
shift toward the unaffected side of the chest (mediastinal shift).

- A traumatic pneumothorax occurs when air escapes from a laceration in the lung itself and enters the
pleural space or enters the pleural space through a wound in the chest wall.

-A simple pneumothorax most commonly occurs as air enters the pleural space through the rupture of a
bleb or a bronchopleural fistula.

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