RT 121- MECHANICAL VENTILATORS EXAM QUESTIONS AND ANSWERS 100% PASS

RT 121- MECHANICAL
VENTILATORS EXAM QUESTIONS
AND ANSWERS 100% PASS

Involves the exchange of oxygen and carbon dioxide

between an organism and its environment. - CORRECT ANSWER-Respiration

involves the diffusion of oxygen and carbon dioxide between the alveoli and the

pulmonary capillaries. - CORRECT ANSWER-External respiration

occurs at the cellular level and involves the exchange of oxygen and carbon dioxide

between the systemic capillaries and the cells of the

body - CORRECT ANSWER-Internal respiration

Accessory Muscles of Breathing (INSPIRATION) - CORRECT ANSWER-1.

Scalene (anterior, medial,

and posterior)

2. Sternocleidomastoids

3. Pectoralis (major and minor)

4. Trapezius

,Accessory Muscles of Breathing (EXPIRATION) - CORRECT ANSWER-1.

Rectus abdominis

2. External oblique

3. Internal oblique

4. Transverse abdominal

Serratus (anterior, posterior)

5. Latissimus dorsi

For air to flow through a tube or airway.... - CORRECT ANSWER-The pressure

at one end of the tube must be higher than pressure at the other end of the tube

Pressure Equivalents - CORRECT ANSWER-• 1 mm Hg = 1.36 cm H2O

• 1 kPa = 7.5 mm Hg

• 1 Torr = 1 mm Hg

• 1 atm = 760 mm Hg = 1034 cm H2O

Four basic pressure gradients are used to describe normal ventilation: - CORRECT

ANSWER-1. Transairway pressure

2. Transthoracic pressure

3. Transpulmonary pressure (or transalveolar pressure)




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, 4. Transrespiratory pressure

Transairway Pressure formula - CORRECT ANSWER-PTA = Pawo − Palv

Pressure difference between the airway opening and the

alveolus - CORRECT ANSWER-Transairway pressure

The pressure gradient required to produce airflow in the

conductive airways - CORRECT ANSWER-Transairway pressure

The pressure that must be generated to overcome resistance

to gas flow in the airways - CORRECT ANSWER-Transairway pressure

The pressure difference between the alveolar space or lung and the body's surface

(Pbs ) - CORRECT ANSWER-Transthoracic Pressure

The pressure required to expand or contract the lungs and the chest wall at the

same time. - CORRECT ANSWER-Transthoracic Pressure

The pressure required to maintain alveolar inflation, Sometimes called the alveolar

distending pressure - CORRECT ANSWER-Transpulmonary Pressur

The pressure required to inflate the lungs during

positive pressure ventilation - CORRECT ANSWER-Transrespiratory Pressure

Has two components: - CORRECT ANSWER-Transthoracic pressure and

Transairway pressur