RES 200 Exam 2 Review Game

What is the ventilation/perfusion ratio for a patient with a cardiac output of 6 L/min and an alveolar minute ventilation of 5.5 L/min?

The following conditions cause a/an __________ ventilation-perfusion ratio.

Asthma

Emphysema

Pulmonary fibrosis

Upper airway obstruction

Which of the following describes the respiratory exchange ratio?

• The amount of oxygen and carbon dioxide exchanged over a one minute period.

• The amount of oxygen and carbon dioxide exchanged over a one hour period.

• The amount of carbon dioxide produced in one minute, multiplied by the respiratory rate.

• The amount of oxygen consumed in one minute, multiplied by the respiratory rate.

When ventilation decreases, end capillary PaO2 decreases, and end capillary PaCO2...

• Increases

• Decreases

• Does not change

Which portion of the upright lung has the highest ventilation-perfusion ratio?

• Middle lobe

• Lower lobe

• Upper lobe

• There is no variance, all lobes have the same ventilation-perfusion ratio.

In a healthy adult, the normal ventilation-perfusion ratio is...

What effect, if any, will the following conditions have on the V/Q ratio?

Pulmonary emboli

Pulmonary hypertension

Pneumothorax

Cardiac arrest

• No effect

• Increased ratio

• Decreased ratio

• Either increased or decreased depending on the severity.

Calculate the respiratory quotient:

VCO2: 300 mL/min

VO2: 400 mL/min

This substance dissociates in the lungs to form water and carbon dioxide, which can then be removed from the body.

How is most CO2 transported?

• Dissolved in plasma

• Bound to red blood cells as deoxyhemoglobin

• As bicarbonate

• As Carbamino compound