Mechanical Ventilation ch.1-4 exaM with
answers Verified and Graded a+
What is one of the most frequent uses for mechanical ventilation? ✔✔ Management of post-op
patients recovering from anesthesia and medications
Patients Who require mechanical ventilation commonly have clinical signs of ventilatory failure,
oxygenation failure or both. ✔✔ True
What is airway resistance the degree of? ✔✔ Airflow obstruction in the airways
What can cause airway obstruction? ✔✔ Retained secretions in the airways
Neoplasms of the bronchial muscle structure
Tumors compressing the airways
During mechanical ventilation, one of the strategies to reduce the airflow resistance is what?
✔✔ Remove the secretions in endotracheal tube
How are airway resistance and work of breathing related? ✔✔ Directly, so the work of breathing
increases in conditions of high airway resistance
What happens if the work of breathing cannot keep pace with the increase of airway
resistance? ✔✔ Airflow will decrease
Patients with COPD typically use what type of breathing pattern in order to compensate or
accommodate for am increase in airflow resistance? ✔✔ Deep and slow
,When an abnormally high airway resistance is sustained over a long time, what can happen?
✔✔ Fatigue of respiratory muscles
Ventilatory failure
Oxygenation failure
The peak inspiratory pressure is higher than the plateau pressure and the dynamic compliance
is lower than the static compliance. ✔✔ True
What does extreme low compliance lead to? ✔✔ Difficult lung expansion
Extreme high compliance leads to? ✔✔ Poor elastic recoil of lung tissues
Incomplete exhalation
CO2 retention
When are the lungs considered "stiff" or noncompliant? ✔✔ When you have low compliance or
high elastance.
How are compliance and work of breathing related? ✔✔ Inversely, work of breathing will
increase in conditions of low compliance
What happens if the work of breathing cannot keep pace with decreasing compliance? ✔✔
Tidal volume will decrease
What doesn't happen when low compliance is sustained over a long period of time? ✔✔ Acute
renal failure
, What could possibly happen if you sustain low compliance over a long period of time? ✔✔
Oxygenation failure
Ventilatory failure
Respiratory muscle fatigue
When the compliance value is extremely high (ex. Emphysema) what happens to exhalation?
✔✔ Exhalation is incomplete due to a decrease of lung elastic recoil.
In general, the static compliance is affected by changes in the lung parenchyma. What is an
example of this? ✔✔ Pneumonia
Why is static compliance not a determining factor of static compliance measurement? ✔✔
Because it has little or no airflow
What kind of properties does static compliance reflect? ✔✔ Elastic properties of the lung and
chest wall
Why is dynamic compliance a determining factor of dynamic compliance measurement? ✔✔
Because airflow is present when measured
Atelectasis decreases the static & dynamic compliance measurements. ✔✔ True
In general, conditions causing changes in the static compliance invoke different changes in the
dynamic compliance. ✔✔ False
What happens when the lung compliance is decreased? ✔✔ Peak inspiratory pressure &
plateau pressure increase
Static compliance & dynamic compliance decrease
answers Verified and Graded a+
What is one of the most frequent uses for mechanical ventilation? ✔✔ Management of post-op
patients recovering from anesthesia and medications
Patients Who require mechanical ventilation commonly have clinical signs of ventilatory failure,
oxygenation failure or both. ✔✔ True
What is airway resistance the degree of? ✔✔ Airflow obstruction in the airways
What can cause airway obstruction? ✔✔ Retained secretions in the airways
Neoplasms of the bronchial muscle structure
Tumors compressing the airways
During mechanical ventilation, one of the strategies to reduce the airflow resistance is what?
✔✔ Remove the secretions in endotracheal tube
How are airway resistance and work of breathing related? ✔✔ Directly, so the work of breathing
increases in conditions of high airway resistance
What happens if the work of breathing cannot keep pace with the increase of airway
resistance? ✔✔ Airflow will decrease
Patients with COPD typically use what type of breathing pattern in order to compensate or
accommodate for am increase in airflow resistance? ✔✔ Deep and slow
,When an abnormally high airway resistance is sustained over a long time, what can happen?
✔✔ Fatigue of respiratory muscles
Ventilatory failure
Oxygenation failure
The peak inspiratory pressure is higher than the plateau pressure and the dynamic compliance
is lower than the static compliance. ✔✔ True
What does extreme low compliance lead to? ✔✔ Difficult lung expansion
Extreme high compliance leads to? ✔✔ Poor elastic recoil of lung tissues
Incomplete exhalation
CO2 retention
When are the lungs considered "stiff" or noncompliant? ✔✔ When you have low compliance or
high elastance.
How are compliance and work of breathing related? ✔✔ Inversely, work of breathing will
increase in conditions of low compliance
What happens if the work of breathing cannot keep pace with decreasing compliance? ✔✔
Tidal volume will decrease
What doesn't happen when low compliance is sustained over a long period of time? ✔✔ Acute
renal failure
, What could possibly happen if you sustain low compliance over a long period of time? ✔✔
Oxygenation failure
Ventilatory failure
Respiratory muscle fatigue
When the compliance value is extremely high (ex. Emphysema) what happens to exhalation?
✔✔ Exhalation is incomplete due to a decrease of lung elastic recoil.
In general, the static compliance is affected by changes in the lung parenchyma. What is an
example of this? ✔✔ Pneumonia
Why is static compliance not a determining factor of static compliance measurement? ✔✔
Because it has little or no airflow
What kind of properties does static compliance reflect? ✔✔ Elastic properties of the lung and
chest wall
Why is dynamic compliance a determining factor of dynamic compliance measurement? ✔✔
Because airflow is present when measured
Atelectasis decreases the static & dynamic compliance measurements. ✔✔ True
In general, conditions causing changes in the static compliance invoke different changes in the
dynamic compliance. ✔✔ False
What happens when the lung compliance is decreased? ✔✔ Peak inspiratory pressure &
plateau pressure increase
Static compliance & dynamic compliance decrease
