18 Questions
What is the purpose of the trigger variable in mechanical ventilation?
To maintain a preset level before inspiration ends
Which of the following can serve as a target variable in mechanical ventilation?
Volume
What determines the end of the inspiratory phase in mechanical ventilation?
Pressure
Which system in mechanical ventilation generates the actual force needed to deliver gas under pressure?
Drive Mechanism
What is the baseline variable controlled during expiration in mechanical ventilation?
Baseline Variable
Which variable can be either a direct application of compressed gas or an indirect application via an electrical motor or compressor in ventilators?
Flow Rate
What effect does low lung compliance have on the transmission of pressure to the thoracic cavity?
The pressure transmitted to the thoracic cavity is much less
How should Mean Airway Pressure (mPaw) and Cardiac Output be managed?
Keep PIP, I Time, RR, and PEEP at minimum levels
In hypovolemic patients, what effect does Positive Pressure Ventilation (PPV) have on pulmonary venous return to the Left ventricle?
Results in a decrease in pulmonary venous return
What is a characteristic of Pulsus Paradoxus seen in patients with asthma?
Spontaneous decrease in systolic blood pressure
How does PPV affect pulmonary blood flow entering and leaving the heart?
Decreases pulmonary blood flow entering and leaving the heart
What is one reason for an increase in pulmonary venous return to the Left ventricle in hypertensive patients under PPV?
Compression of pulmonary blood vessels is minimal
What is the most practical baseline variable used in all modern ventilators?
Pressure
Which of the following waveforms are of interest during ventilatory support?
Pressure, volume, and flow
In positive pressure ventilation, which of the following is used to bring air into the lungs?
Positive pressure
What are the three types of positive pressure ventilation?
Volume type, Pressure type, Flow type
Which of the following considerations is important in positive pressure ventilation for cardiovascular health?
Pulmonary Blood Flow
What is a key factor to be assessed concerning pulmonary function in mechanical ventilation?
Compliance
Explore the impact of compliance on lung pressure and volume in critical care settings, and understand how it influences the transmission of airway pressure to the thoracic cavity. Learn about the cardiovascular considerations related to mean airway pressure and cardiac output.
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