26 Questions
Which of the following is a purpose of mechanical ventilation?
To maintain or improve ventilation and tissue oxygenation
What are the indications for mechanical ventilation?
Abnormalities of pulmonary gas exchange
Which parameters are considered when determining the need for ventilatory support?
Arterial blood gases, pH, PaO2, PaCO2
Which method of cycling is the most common form of ventilator cycling used in adult medicine?
Volume-cycled ventilation
What is the main indication for mechanical ventilation?
To sustain life
What is the initial mode of ventilation recommended when starting positive-pressure ventilation with a volumecycled ventilator?
Assist-control mode
What is the trend of these values that should influence clinical judgment when considering starting mechanical ventilation?
Increasing severity of illness
Which type of ventilator delivers a selected gas pressure to the patient early in inspiration, and sustains the pressure throughout the inspiratory phase?
Pressure Ventilator
Which factor terminates the inspiratory cycle in a volume-cycled ventilator?
Preset tidal volume
Which type of ventilator would be used to achieve lower peak ventilator pressures?
High-Frequency Ventilator
Which mode of ventilation reduces the work of breathing to the amount of inspiration needed to trigger the machine?
Assist-control mode
Which of the following is a category of ventilator alarms?
High-pressure and low-pressure alarms
Which of the following is NOT a mechanical complication of mechanical ventilation?
Failure of alarms or ventilator
Which physiological complication can occur due to fluid overload with humidified air?
Fluid overload
Which of the following is the formula for calculating minute ventilation (VE)?
VE = VT x F
What is the usual rate of sighs per hour?
4 to 8
What is the recommended range for peak airway pressure in adults?
20 to 30 cmH2O
What is the most common setting for pressure sensitivity on a ventilator?
-1 to -2 cm H2O
Which mode of mechanical ventilation allows the patient to initiate breaths at a higher rate than the preset number of breaths/minute?
Assist-control (A/C)
In which mode of mechanical ventilation does the ventilator provide a pre-set tidal volume at a pre-set rate, and the patient can breathe spontaneously at his own tidal volume and rate with no assistance from the ventilator?
Synchronized intermittent mandatory ventilation (SIMV)
Which mode of mechanical ventilation is used when compliance is decreased and the risk of barotrauma is high?
Pressure-controlled ventilation (PCV)
Which mode of mechanical ventilation completely provides ventilation to the patient with a preset tidal volume, respiratory rate, and oxygen concentration, and the patient does not breathe spontaneously?
Control Mode (CM) Continuous Mandatory Ventilation (CMV)
Which mode of ventilation is primarily used for weaning from mechanical ventilation?
Pressure Support Ventilation (PSV)
What is the range of the percent of oxygen concentration that a patient can receive from the ventilator?
81% to 100%
What is the usual range of tidal volume selected for a patient on a ventilator?
5 to 15 ml/kg body weight
What are the signs and symptoms of oxygen toxicity?
1- Flushed face, 2- Dry cough, 3- Dyspnea, 4- Chest pain, 5- Tightness of chest, 6- Sore throat
Quiz: Understanding Tidal Volumes and Peak Flow Rates Test your knowledge on tidal volumes and peak flow rates with this quiz. Learn about the potential risks of large tidal volumes, such as volutrauma, and discover the recommended lower tidal volume targets. Explore the concept of peak flow rate and understand how it affects peak airway pressure and inspiration duration. Challenge yourself to improve your understanding of these important respiratory factors.
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