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MCN 374 EXAM 2 ACTUAL EXAM 100 QUESTIONS AND CORRECT ANSWERS|ALREADY GRADED A+

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MCN 374 EXAM 2 ACTUAL EXAM 100 QUESTIONS AND CORRECT ANSWERS|ALREADY GRADED A+

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MCN 374
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MCN 374











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MCN 374
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MCN 374

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Uploaded on
November 28, 2025
Number of pages
41
Written in
2025/2026
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MCN 374 EXAM 2 ACTUAL EXAM 100 QUESTIONS AND CORRECT ANSWERS|ALREADY GRADED A+

Upper respiratory tract - (answer) Oropharynx

Pharynx

Larynx



Lower respiratory tract - (answer) Trachea

Bronchi

Bronchioles

Alveoli



Trachea - (answer) Passage for air to the lungs (trunk)



Bronchus - (answer) Branches off the trachea (primary bronchi)



Bronchi - (answer) Smaller subdivisions of bronchus (smaller branches)



Bronchioles - (answer) Even smaller subdivisions of the bronchi (even smaller branches)



Alveoli - (answer) Gas exchange units (leaves)



Pediatric Airway - (answer) Shorter trachea

Angle of the right bronchus at bifurcation is more acute

Bifurcation of trachea is at T3

Infant's airway diameter is 4mm (1mm swelling reduces to 2mm)

Distance between structures is shorter allowing organisms to rapidly move down

Epiglottis is underdeveloped

Chest A:P diameter 1:1

At age 6, chest diameter is 1:2

Less alveolar surface area = reduced area for gas exchange

,MCN 374 EXAM 2 ACTUAL EXAM 100 QUESTIONS AND CORRECT ANSWERS|ALREADY GRADED A+



Age of Incidence of Respiratory Infection - (answer) <3m - maternal antibodies

3-6m - infection rate increases

Toddler/preschool - high rate of viral infections

>5yrs - increase in pneumonia and strep infections



Respiratory Assessment: Parts - (answer) Inspection

Color

Vital signs

Respiratory rate, depth, and ease

Oxygen saturation

Auscultation

Chest retractions

Respiratory distress

Symptoms of hypoxia



Inspection - (answer) What does the patient look like at first glance? Calm? Anxious? Alert? Asleep?

Position of comfort?



Color - (answer) Observe color of skin, nail beds, mucous membranes

Cyanosis = inadequate oxygenation

Clubbing of nails = chronic hypoxemia

Does crying or coughing worsen or improve color?



Respiratory rate, depth, and ease - (answer) Infant 30-55

Toddler 20-40

Preschool 20-30

School age 12-22

,MCN 374 EXAM 2 ACTUAL EXAM 100 QUESTIONS AND CORRECT ANSWERS|ALREADY GRADED A+

Adolescent 12-20



Oxygen saturation - (answer) Mild hypoxemia 91-94%

Is patient on O2? How much? Delivery system?



Auscultation - (answer) What do you hear? Adventitious sounds? Diminished sounds? Absent sounds?

Bilateral? Anterior? Posterior?

Observe work of breathing (stridor, labored breathing, retractions, head bobbing, nasal flaring, weak cry
or strong, equal chest rise and fall, cough?)



Chest retractions - (answer) Suggest an obstruction to inspiration

Degree and level of retractions emend on the extent and level of obstruction



S/S of Respiratory distress - (answer) Can lead to respiratory failure

S/S include grunting, severe retractions, nasal flaring, diminished or absent breath sounds, apnea,
gasping respirations, tachycardia, bradycardia, decreased oxygen saturation)



Early signs of hypoxia - (answer) Tachypnea

Tachycardia

Restlessness

Pallor

Increased systolic BP

Use of accessory muscles



Late signs of hypoxia - (answer) Bradypnea

Bradycardia

Confusion/stupor

Cyanosis

Hypotension

, MCN 374 EXAM 2 ACTUAL EXAM 100 QUESTIONS AND CORRECT ANSWERS|ALREADY GRADED A+

Dysrhythmias



Nursing Diagnoses for Respiratory Distress - (answer) Ineffective breathing pattern

Risk for volume deficit

Fear (child)

Ineffective airway clearance

Impaired gas exchange

Ineffective therapeutic regime management



Nursing Care for Oxygenation Alteration - (answer) Maintain patent airway

Allow for a position of comfort

Assess respiratory status q1-4hrs

Maintain oxygenation

Assess continuous pulse oximetry

Assess hydration status - maintain I/Os

Assess IV access site

Cardiorespiratory monitoring



Oxygen Delivery Systems - (answer) Non-rebreather in emergency situations

Don't use non-rebreather long-term as patient may develop high levels of carbon dioxide

Nasal cannula with humidified air over 4L



Foreign Body Aspiration - (answer) Most common in 1-3yr olds

Can cause respiratory distress

Symptoms depend on location

Usually items get stuck in *right bronchus*

Chest x-ray

Bronchoscope to remove object

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