NUR 622 (Adult_Gero Acute) MOD #7, Ventilators, Acid_Base Imbalances Questions with CORRECT Answers (Grade A+)

NUR 622 (Adult_Gero Acute) MOD #7, Ventilators, Acid_Base Imbalances Questions with

CORRECT Answers (Grade A+)


Question 1:

active contraction of diaphragm and intercostals, creates a negative intrathoracic pressure,

bringing in air from atmosphere

Answer:

inspiration

Question 2:

passive process, elastic recoil of lungs

Answer:

exhalation

Question 3:

again, the total air inspired and expired during a normal breath

Answer:

tidal volume (Vt) *4-8 ml/kg, 500ml avg

Question 4:

amount of air inspired and expired over a minute formula: RR x Vt (average 5-10L/min)

Answer:

minute ventilation

Question 5:

amount of pressure right ventricle must overcome to push blood through pulmonary circulation to

lungs formula: PA pressure - LA pressure/CO

Answer:

Pulmonary vascular resistance (PVR)

Question 6:

examples of high and low lung compliance (ability of lungs to fill with air)

Answer:

, high - emphysema, old age low - fibrosis, PNA

Question 7:

normal V/Q in apex vs base of lungs

Answer:

apex - ventilation is greater, normal apex V/Q ratio is 3.3 base - due to gravity, perfusion is greater,

normal base V/Q ratio is 0.6

Question 8:

In general, a normal lung V/Q ratio is

Answer:

8

Question 9:

examples of low V/Q mismatch (poor ventilation)

Answer:

-PNA -asthma -COPD -pulmonary edema -aspiration

Question 10:

examples of high V/Q mismatch (poor perfusion)

Answer:

-PE/PAH (prevents blood flow) -emphysema (damage to alveoli reduce functional capillaries)

Question 11:

reduced oxygen delivery to tissues

Answer:

hypoxia

Question 12:

reduced partial pressure of O2 in blood

Answer:

hypoxemia

Question 13: