Question Answer
One across A pathway of tubes within the ventilator is an internal (two words) Pneumatic circuit
Five across A single chip made of integrated circuts Microprocessor
6 across another name for the control panel (two words) User interface
7 across a pneumatic valve that uses an electromagnetic field and is controlled by a microprocessor Solenoid
10 across a device for which the internal volume can be changed Compressor
13 across what's inside the black box Control system
15 across a type of controller Flow
16 across. A stepper motor that controls a hinged clamp device two words Scissor valve
17 across. The mechanical device that causes gas to flow to the patient to words. Drive mechanism
18 across. Uses 50 psi as a power source Pneumatic
one down. Connects to the patient to words Patient circuit
Two down. A ventilator mode where the operator sets a minimum minute ventilation abbreviation MMV
3 down. A mechanism to change internal volume Piston
4 down. A type of controller Volume
7 down. From ventilator directly to patient type ventilator two words Single circuit
8 down. This type of ventilator has two internal pneumatic circuits two words Double circuit
9 down. A type of valve that controls gas flow to words Flow control
11 down. And unintelligent system two words open loop
12 down. An intelligent system two words Closed loop
14 down. Uses AC or DC as a power source Electrical
1. Name the three types of power sources used by ventilators that provide energy to perform the work of ventilating the patient Electrically powered, pneumatically powered, and combined powered.
2. Bird mark 7 power source. Pneumatic power
2. Intermed bear 33 homecare ventilator power source Electric power
2. LifeCare PLV – 102 power source Electric power
2. Servo I power source Combined power
2. LTV 800, 900, and 1000 power source Electric power
2. Bio-med MVP – 10 Pneumatic power
3. Describe an open loop system An open loop system is an unintelligent system in which the ventilator delivers what is set by the operator but does not have the ability to automatically change its operation.
4. Describe a closed-loop system A closed loop system is called an intelligent system, because it has the ability to compare a set of control variables and make adjustments to the system.
5. How do ventilators cause air to move into the lungs? Ventilators cause AIR to move into the lungs by altering the trans respiratory pressure PTR.
6. Explain the difference in function between positive and negative pressure ventilators. Negative pressure ventilators increase pressure gradient between airway opening and alveoli. Positive pressure ventilators increase the same pressure gradient but do so by increasing the pressure at the airway opening.
7. The place on the ventilator where the operator inputs the desired ventilator parameters is known as the User interface. Control panel.
8. Inside a ventilator gas flow passes through what type of circuit? Internal pneumatic circuit
9. After exiting the ventilator, gas flow passes through the, what, on its way to the patient. External pneumatic circuit patient circuit
10. The gas flow from the ventilators power source goes directly to the patient. This is known as what type of internal pneumatic circuit? Single circuit
11. The primary power source of a ventilator generates a gas low that compresses another mechanism, such as a bellows or bag. The gas within this mechanism goes to the patient. This is a description of what type of internal pneumatic circuit? Double circuit
12. List the four basic elements of a patient circuit Main inspiratory line connecting the ventilator output to the patient and actor. Patient adapter or Y connector. Expiratory tubing. Expiratory valve.
13. Identify the labeled parts of the ventilator circuit shown in Figure 2-1. Internally mounted exhalation valve. Main expiratory line. Main inspiratory line. Patient connector, y conectar.
14. Explain how an external exhalation valve operates. Long answer regarding older ventilators that used externally mounted exhalation valves. More explanation. This allowed the patient to passively exhale through the expiratory port.
15. Name the two types of flow control valve available on circuit ventilators. Proportional solenoid valve. Digital valve with on/off configurations.
16. Describe how each of the flow control valves operates. The proportional solenoid valve has a plunger, valve seat, an electromagnet, a diaphragm, spring, and two electrical contacts. The amount of flow can be varied depending on which valves are open.
17. The internal hardware that converts electrical or pneumatic energy to a system that provides a breath to a patient is called the Drive mechanism
18. Name four types of compressors that are used in ventilators. Piston. Rotating blades veins. Moving diaphragms. Bellows.
19. Describe how a spring loaded bellows functions. An adjustable spring is attached to the top of a bellows, where it applies pressure to Forest the gas mixture air and oxygen out of the ventilator and into the patient. The tide of the spring, the greater the forest and the greater the pressure.
20. Describe how a linear drive piston functions. Alinear drive piston uses an electrical motor connected by special gearing, rack and pinion, to a piston rod. The rod moves the piston forward, pushing volume to the patient.
21. Describe how a rotary drive piston functions. A rotating wheel is connected to a rod and piston. An electric motor rotates the drive wheel, gas flows to the patient, slowly at first, reaching its greatest speed at mid inspiration, and then tapering off at end inspiration. Sinusoidal waveform
22. The ICU ventilators used today have what type of internal functions? Today's ventilators are microprocessor-controlled, closed loop, single circuit, positive pressure ventilators.
23. What type of ventilator uses the Coanda effect as its internal control system? A pneumatically controlled fluidic ventilator uses the Coanda effect.
Critical thinking questions
1. A patient being ventilated in the SIMV mode becomes apneic. Explain how both close and open loop system might respond to this occurrence. An open loop system would be able to alarm when apnea is detected. A closed loop system would be able to alarm and switch to a type of mold that provides full ventilatory support for the patient.
2. If the exhalation valve malfunctions, what happens to the inspiratory gas blow? Inspiratory gas flow would not go to the patient. The flow would bypass the patient, taking the course of least resistance into the room.
3. What type of ventilator could be used during an MRI procedure? Pneumatic or fluidic.
Case studies
Case study number one. A patient receiving mechanical ventilation needs to be transported to another Medical Center for treatment. What type of power source would be appropriate for use during patient transport? DC battery powered or pneumatically powered.
Case study number 2. While being mechanically ventilated in a mode that allows spontaneous breathing, a patient becomes apneic. The ventilator automatically alarms and switches to full ventilatory support. Is this an open or closed loop system? Explain. This would be a closed loop system, because the ventilator detects the period of apnea and is able to adjust how it functions by switching to full ventilatory support.
NBRC – style questions
1. The power used by a mechanical ventilator to perform the work of ventilating a patient is known as which of the following. Force. Pressure. Input power. Output power. Force.
2. Which of the following statements are true concerning combined power ventilators? They often have RAM and RAM for data and pre-programmed modes.
3. The internal circuit of a ventilator has the gas go directly from its power source to the patient. This is known as which of the following? External circuit. Internal circuit? Single circuit? Double circuit? Single circuit
4. One of the functions of the exhalation valve is to do which of the following? Regulate pressure? Ensure adequate humidification? Ensure gas delivery on inspiration? Determine the patient's tidal volume? Ensure gas delivery on inspiration.
5. A closed loop system is being used to guarantee minute ventilation to a patient. The minute volume delivered to the patient difference significant from the set minute volume. The ventilator will do which of the following? Alter the volume delivered.
6. They mechanical device that causes gas to flow to the patient is known as which of the following? Drive mechanism? Power transmission? Exhalation valve? Solenoid valve Drive mechanism.
7. Volume displacement devices include which of the following? One. Pistons. Too. Stepper motors. 3. Concertina bags. 4. Provincial solenoids. Pistons and concertina bags
8. The flow control valve that uses an electromagnetic field is which of the following? Digital valve? Stepper motor? Solenoid valve? Rotating blade? Solenoid valve
9. Which type of ventilator uses the wall attachment phenomenon or Coanda effect as its basic component? Fluidic ventilator? Electrically powered ventilator? Pneumatically powered ventilator? Microprocessor-controlled ventilator? Fluidic ventilator
10. The volume displacement device that creates a sinusoidal floway pattern during inspiration is which of the following? Spring loaded bellows? Linear drive piston? Rotary drive piston? Concertina bag? Rotary drive piston

Leave a Reply

Your email address will not be published. Required fields are marked *