MEDSURG 2 NUR 265 ATI OXYGENATION
PRACTICE 9 KEY PRACTICE TEST 2026
TESTED QUESTIONS WITH VERIFIED
ANSWERS GRADED A+
⩥ Negative pressure ventilation. Answer: Exerts pressure from the
outside to pull lungs open, bring air in
Used by the first mechanical ventilators
How spontaneous breathing works, using muscles of respiration
⩥ positive pressure ventilation. Answer: Air pushed into lungs until
ventilator breath is terminated, then the pressure drops to 0 and the
elastic recoil of the chest pushes air out
Today's mechanical ventilators
⩥ Pressure cycled vent. Answer: Delivers air until a certain pressure is
released. Volume delivered by the ventilator varies with changes in
airway resistance, lung compliance
Exhalation is *passive*
,⩥ Volume-cycled vent. Answer: Volume given until a certain amount
(tidal volume is set as a goal for pt delivery)
⩥ Time cycled vent. Answer: Delivers breaths in a timed cycle (ex:
every 3 seconds)
Used mostly in *pediatrics*
⩥ Tidal Volume (TV). Answer: Amount of air delivered with each breath
*10-15 mL/kg body weight*
⩥ Vf. Answer: Respiratory rate
⩥ FIO2. Answer: fraction of inspired oxygen, percentage ranges from
21-100%
⩥ Sigh volume. Answer: A periodically thrown in deeper breath to
promote alveolar expansion and replicate normal breathing
⩥ Peak flow. Answer: Speed of air flow in liters per minute
, ⩥ Sensitivity (ventilator). Answer: Amount of effort needed to initiate a
breath
⩥ Pressure limit. Answer: Highest pressure allowed by the machine
Mechanical inspiration stopped when limit is reached
⩥ I:E ratio. Answer: Inspiration:Expiration time, normal is *1:2*
⩥ Pressure support. Answer: Makes it easier to take breath in
Assists in overcoming increased airway resistance by providing positive
pressure when pt inhales
Decreases work of breathing, increases comfort, and provides endurance
training during weaning
⩥ PEEP. Answer: positive end expiratory pressure
Prevents or decreases alveolar collapse at end of expiration, helps
reinflate collapsed alveoli
⩥ Controlled ventilation. Answer: Pt has no work of breathing
PRACTICE 9 KEY PRACTICE TEST 2026
TESTED QUESTIONS WITH VERIFIED
ANSWERS GRADED A+
⩥ Negative pressure ventilation. Answer: Exerts pressure from the
outside to pull lungs open, bring air in
Used by the first mechanical ventilators
How spontaneous breathing works, using muscles of respiration
⩥ positive pressure ventilation. Answer: Air pushed into lungs until
ventilator breath is terminated, then the pressure drops to 0 and the
elastic recoil of the chest pushes air out
Today's mechanical ventilators
⩥ Pressure cycled vent. Answer: Delivers air until a certain pressure is
released. Volume delivered by the ventilator varies with changes in
airway resistance, lung compliance
Exhalation is *passive*
,⩥ Volume-cycled vent. Answer: Volume given until a certain amount
(tidal volume is set as a goal for pt delivery)
⩥ Time cycled vent. Answer: Delivers breaths in a timed cycle (ex:
every 3 seconds)
Used mostly in *pediatrics*
⩥ Tidal Volume (TV). Answer: Amount of air delivered with each breath
*10-15 mL/kg body weight*
⩥ Vf. Answer: Respiratory rate
⩥ FIO2. Answer: fraction of inspired oxygen, percentage ranges from
21-100%
⩥ Sigh volume. Answer: A periodically thrown in deeper breath to
promote alveolar expansion and replicate normal breathing
⩥ Peak flow. Answer: Speed of air flow in liters per minute
, ⩥ Sensitivity (ventilator). Answer: Amount of effort needed to initiate a
breath
⩥ Pressure limit. Answer: Highest pressure allowed by the machine
Mechanical inspiration stopped when limit is reached
⩥ I:E ratio. Answer: Inspiration:Expiration time, normal is *1:2*
⩥ Pressure support. Answer: Makes it easier to take breath in
Assists in overcoming increased airway resistance by providing positive
pressure when pt inhales
Decreases work of breathing, increases comfort, and provides endurance
training during weaning
⩥ PEEP. Answer: positive end expiratory pressure
Prevents or decreases alveolar collapse at end of expiration, helps
reinflate collapsed alveoli
⩥ Controlled ventilation. Answer: Pt has no work of breathing
