NUR 265 EXAM 2 QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS ALREADY PASSED!!!
LATEST UPDATED 2026
Question: What is the correct chronological order of clinical steps and diagnostics
used to verify proper endotracheal (ET) tube placement?
✔✔ Answer:
The verification process must be carried out from the most immediate method to
the final definitive check:
1. End-Tidal CO_2 (ETCO_2): Instant verification using colorimetric
capnography or waveform monitoring, targeting a standard partial pressure
of 20 to 40 mmHg.
2. Visual Inspection: Observing for immediate, equal, and bilateral chest
expansion (chest symmetry).
3. Auscultation: Using a stethoscope to check for bilateral breath sounds in the
left and right lung fields, while confirming the absence of gurgling sounds
over the stomach (epigastric/abdominal area).
4. Chest X-ray: The definitive diagnostic tool to visualize and confirm the
exact placement of the tube tip above the carina.
Question: How does the Assist-Control (A/C) mechanical ventilation mode
function?
✔✔ Answer: In this mode, the mechanical ventilator takes over the full workload
of breathing for the patient. It guarantees a pre-programmed, fixed respiratory rate
and breath volume, delivering full machine support regardless of whether the
breath is initiated by the machine or the patient.
Question: How does Synchronized Intermittent Mandatory Ventilation (SIMV)
function?
✔✔ Answer: In this mode, the machine allows the patient to breathe
spontaneously between set mechanical breaths. When the patient attempts to take
, an independent breath, the ventilator synchronizes with their effort to support their
respiratory pattern rather than overriding it.
Question: What are the fundamental parameters and settings configured on a
mechanical ventilator?
✔✔ Answer:
Mode: The primary operational control setting (such as A/C or SIMV)
dictating how the machine and patient interact.
Fraction of Inspired Oxygen ($FiO_2$): The precise percentage of oxygen
delivered to the patient (21% to 100%.
Rate: The minimum number of controlled mechanical breaths delivered per
minute.
Tidal Volume (V_t): The fixed volume of air delivered into the lungs
during a single mechanical breath.
Positive End-Expiratory Pressure (PEEP): The pressure maintained in the
airways at the end of expiration.
Question: What is Positive End-Expiratory Pressure (PEEP), and what is its
physiological purpose?
✔✔ Answer: PEEP is a continuous structural pressure applied to the airways at the
very end of an exhalation phase. Its purpose is to physically prevent the lungs'
alveoli (air sacs) from collapsing, holding them open slightly longer to maximize
surface area and improve systemic gas exchange (oxygenation).
What are some complications of PEEP? -ANSWER ✔✔Pneumothorax
SubQ Emphysema (crepatus)
Decreased pre-load
What are the 3 buttons that a nurse is able to touch on a vent? -ANSWER
✔✔Silence
Restart
ANSWERS WITH COMPLETE
SOLUTIONS ALREADY PASSED!!!
LATEST UPDATED 2026
Question: What is the correct chronological order of clinical steps and diagnostics
used to verify proper endotracheal (ET) tube placement?
✔✔ Answer:
The verification process must be carried out from the most immediate method to
the final definitive check:
1. End-Tidal CO_2 (ETCO_2): Instant verification using colorimetric
capnography or waveform monitoring, targeting a standard partial pressure
of 20 to 40 mmHg.
2. Visual Inspection: Observing for immediate, equal, and bilateral chest
expansion (chest symmetry).
3. Auscultation: Using a stethoscope to check for bilateral breath sounds in the
left and right lung fields, while confirming the absence of gurgling sounds
over the stomach (epigastric/abdominal area).
4. Chest X-ray: The definitive diagnostic tool to visualize and confirm the
exact placement of the tube tip above the carina.
Question: How does the Assist-Control (A/C) mechanical ventilation mode
function?
✔✔ Answer: In this mode, the mechanical ventilator takes over the full workload
of breathing for the patient. It guarantees a pre-programmed, fixed respiratory rate
and breath volume, delivering full machine support regardless of whether the
breath is initiated by the machine or the patient.
Question: How does Synchronized Intermittent Mandatory Ventilation (SIMV)
function?
✔✔ Answer: In this mode, the machine allows the patient to breathe
spontaneously between set mechanical breaths. When the patient attempts to take
, an independent breath, the ventilator synchronizes with their effort to support their
respiratory pattern rather than overriding it.
Question: What are the fundamental parameters and settings configured on a
mechanical ventilator?
✔✔ Answer:
Mode: The primary operational control setting (such as A/C or SIMV)
dictating how the machine and patient interact.
Fraction of Inspired Oxygen ($FiO_2$): The precise percentage of oxygen
delivered to the patient (21% to 100%.
Rate: The minimum number of controlled mechanical breaths delivered per
minute.
Tidal Volume (V_t): The fixed volume of air delivered into the lungs
during a single mechanical breath.
Positive End-Expiratory Pressure (PEEP): The pressure maintained in the
airways at the end of expiration.
Question: What is Positive End-Expiratory Pressure (PEEP), and what is its
physiological purpose?
✔✔ Answer: PEEP is a continuous structural pressure applied to the airways at the
very end of an exhalation phase. Its purpose is to physically prevent the lungs'
alveoli (air sacs) from collapsing, holding them open slightly longer to maximize
surface area and improve systemic gas exchange (oxygenation).
What are some complications of PEEP? -ANSWER ✔✔Pneumothorax
SubQ Emphysema (crepatus)
Decreased pre-load
What are the 3 buttons that a nurse is able to touch on a vent? -ANSWER
✔✔Silence
Restart
