Nitrous Oxide Study Guide for CDCA Exam with all
Correct & 100% Verified Answers |Latest Version |
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Nitrous is known as ✔Correct Answer-relative analgesia, and conscious sedation
What are some Nitrous contraindications ✔Correct Answer-COPD,PREGNANCY, MIDDLE OF
EAR, OCULAR SURGERY, Bowl obstruction
What is diffusion hypoxia? ✔Correct Answer-Impaired oxygen exchange, more CO2 is
removed from blood than normal.
What are some signs/symptoms of diffusion hypoxia? ✔Correct Answer-Nausea, Headache
lethargy
What is the minimum alveolar concentration (MAC) ✔Correct Answer-104% (It is impossible
to induce general anesthesia below a concentration of 100%
Why does nitrous oxide rapidly diffused and saturated into the blood? ✔Correct Answer-Not
metabolized
What percent of nitrous is ideal for a patient? ✔Correct Answer-30-40%
What are some signs/symptoms of reactive analgesia? ✔Correct Answer-Throaty,warm,
drowsy & vitals are normal
What are some signs/symptoms of OVER sedation? ✔Correct Answer-Angry, unaware, heavy
flying, spinning & nausea
What are some complications that may occur WHILE nitrous is being administered? ✔Correct
Answer-Flushing and perception is affected, Decrease by 5-10%
What are some excessive complications that may occur WHILE nitrous is being administered?
✔Correct Answer-Sweating with loss of color, decrease BP, increase HR, terminate care
When a patient is shivering during nitrous administration, what is occurring? ✔Correct
Answer-Peripheral vasodilation and decrease in core temperature
What is the concentration of air? ✔Correct Answer-20.9% Oxygen
79% Nitrogen
0.04% CO2
, What does the respiratory system exchange across capillary membrane? ✔Correct Answer-
CO2 & O2
Regular movement of air is known as? ✔Correct Answer-Tidal Flow
Amount of gas inspired, normal breaths is known as? ✔Correct Answer-Tidal Volume
What is the estimated tidal volume for adults and children? ✔Correct Answer-5-7 L/min for
adults, 3-4 L/min for children
Nitrous oxide displaces ______ in lungs, this is more soluble than nitrous ✔Correct Answer-
Nitrogen
True or False
Nitrous Oxide is not metabolized in the body, it exists through the lungs ✔Correct Answer-
True
What are some signs of Anxiolytics signs ✔Correct Answer-Patient is responsive, maintains
airway, pain rxn threshold is increased, pain perception is not eliminated as with LA
How should you treat a patient who has cardiovascular disease or hypertension? ✔Correct
Answer-Evaluate carefully and consult with physician, slight myocardial depressant (Depressed
the CNS)
What effect does nitrous oxide have on vitals when a patient is under minimal sedation?
✔Correct Answer-Depresses HR & BP (slightly) , take vitals before & after N2O
When should you avoid using N20 on a pregnant patient? ✔Correct Answer-1st trimester,
physician must give permission (not the dentist)
If a person becomes restless during N2O, what should you do? ✔Correct Answer-Reduce N20
by 5%/min, or turn down to 100% Oxygen
How much N20 is secreted through the lungs? ✔Correct Answer-100% is metabolized,
excreted unchanged
What is titration and how do you achieve it? ✔Correct Answer-Biological variability, no fixed
dose, start at 20% and adjust by 5-10% until patient is comfortable
What should you do if a patient becomes nauseated? ✔Correct Answer-Give 100% oxygen &
roll to side or decrease by 5-10% increments
True or False
Correct & 100% Verified Answers |Latest Version |
Already Graded A+
Nitrous is known as ✔Correct Answer-relative analgesia, and conscious sedation
What are some Nitrous contraindications ✔Correct Answer-COPD,PREGNANCY, MIDDLE OF
EAR, OCULAR SURGERY, Bowl obstruction
What is diffusion hypoxia? ✔Correct Answer-Impaired oxygen exchange, more CO2 is
removed from blood than normal.
What are some signs/symptoms of diffusion hypoxia? ✔Correct Answer-Nausea, Headache
lethargy
What is the minimum alveolar concentration (MAC) ✔Correct Answer-104% (It is impossible
to induce general anesthesia below a concentration of 100%
Why does nitrous oxide rapidly diffused and saturated into the blood? ✔Correct Answer-Not
metabolized
What percent of nitrous is ideal for a patient? ✔Correct Answer-30-40%
What are some signs/symptoms of reactive analgesia? ✔Correct Answer-Throaty,warm,
drowsy & vitals are normal
What are some signs/symptoms of OVER sedation? ✔Correct Answer-Angry, unaware, heavy
flying, spinning & nausea
What are some complications that may occur WHILE nitrous is being administered? ✔Correct
Answer-Flushing and perception is affected, Decrease by 5-10%
What are some excessive complications that may occur WHILE nitrous is being administered?
✔Correct Answer-Sweating with loss of color, decrease BP, increase HR, terminate care
When a patient is shivering during nitrous administration, what is occurring? ✔Correct
Answer-Peripheral vasodilation and decrease in core temperature
What is the concentration of air? ✔Correct Answer-20.9% Oxygen
79% Nitrogen
0.04% CO2
, What does the respiratory system exchange across capillary membrane? ✔Correct Answer-
CO2 & O2
Regular movement of air is known as? ✔Correct Answer-Tidal Flow
Amount of gas inspired, normal breaths is known as? ✔Correct Answer-Tidal Volume
What is the estimated tidal volume for adults and children? ✔Correct Answer-5-7 L/min for
adults, 3-4 L/min for children
Nitrous oxide displaces ______ in lungs, this is more soluble than nitrous ✔Correct Answer-
Nitrogen
True or False
Nitrous Oxide is not metabolized in the body, it exists through the lungs ✔Correct Answer-
True
What are some signs of Anxiolytics signs ✔Correct Answer-Patient is responsive, maintains
airway, pain rxn threshold is increased, pain perception is not eliminated as with LA
How should you treat a patient who has cardiovascular disease or hypertension? ✔Correct
Answer-Evaluate carefully and consult with physician, slight myocardial depressant (Depressed
the CNS)
What effect does nitrous oxide have on vitals when a patient is under minimal sedation?
✔Correct Answer-Depresses HR & BP (slightly) , take vitals before & after N2O
When should you avoid using N20 on a pregnant patient? ✔Correct Answer-1st trimester,
physician must give permission (not the dentist)
If a person becomes restless during N2O, what should you do? ✔Correct Answer-Reduce N20
by 5%/min, or turn down to 100% Oxygen
How much N20 is secreted through the lungs? ✔Correct Answer-100% is metabolized,
excreted unchanged
What is titration and how do you achieve it? ✔Correct Answer-Biological variability, no fixed
dose, start at 20% and adjust by 5-10% until patient is comfortable
What should you do if a patient becomes nauseated? ✔Correct Answer-Give 100% oxygen &
roll to side or decrease by 5-10% increments
True or False
