NBRC EXAM REVIEW QUESTIONS &
ANSWERS 100% CORRECT (FULLY
SOLVED)
3-Layer Sputum - correct answer- Bronchiectasis
A "Restrictive" problem would have to do with VOLUME OR
FLOW - correct answer- Volume
A "weak and thready" pulse is associated with? - correct
answer- Decrease in strength of cardiac contraction (CHF)
A 62-year-old female has the following arterial blood gas results
on room air:
pH: 7.37
PaCO2: 38 torr
PaO2: 60 torr
The co-oximeter is currently down for repair at this time. The
physician has asked you to estimate the SaO2. You would
estimate the SaO2 to be which of the following?
A. 75%
B. 80%
,C. 85%
D. 90% - correct answer- To estimate the SaO2;
PaO2 + 30 =SaO2
A 75-year-old patient with COPD is receiving oxygen at home by
nasal cannula with a bubble humidifier. How should the
respiratory therapist instruct the patient to clean his humidifier?
A. Place it on the top shelf of the dishwasher.
B. Soak it in an acetic acid solution for 20 minutes and rinse with
water.
C. Rinse it with distilled water and allow to air dry.
D. Soak it in an alkaline glutaraldehyde solution for 30 minutes
and rinse with water. - correct answer- Answer is B.
Dishwasher would ruin it by the heat. Answer d would sterilize it
but to expensive and not practical for home setting.
A patient is breathing a mixture of 70% He / 30% O2 via non-
rebreather mask. The oxygen flowmeter indicates a flow of 12
L/min. What is the actual flow of gas to the mask?
A. 12 L/min
B. 16 L/min
,C. 19 L/min
D. 22 L/min - correct answer- Answer is C. flow 12 x
1.6 =19.2 so round off 19 is closest.
1.6 is the factor for He at 70%
A patient is on a ventilator and is in the process of being
weaned. What is the best way to continuously monitor the
minute ventilation?
A. Chest transducers
B. Thermistors
C. Water seal spirometer
D. Pneumotachometer - correct answer- Best way to
continuously monitor minute ventilation. Chest transducers
measure effort to breathe; thermistor is a temperature probe
that will measure effort; water seal spirometer is very accurate
in measuring volumes but it can't continuously measure minute
ventilation because it will run out of room; Pneumotachometer
will measure flow passing through it for as long as you want, so
ANSWER is D, Pneumotachometer.
A patient's PvO2 has decreased from 30 torr to 20 torr. This is
indicative of a/an:
, A. Decreased SVR
B. Increased cardiac index
C. Decreased cardiac output
D. Decreased PVR - correct answer- PvO2 decreased.
Venous decreases and increases are directly associated with
cardiac output. Cardiac index goes up and down with cardiac
output so it would not increase; Decreased PVR is talking about
pulmonary resistance. ANSWER is C, decreased cardiac output.
Accessory Muscle Hypertrophy associated with... - correct
answer- COPD
Air to Oxygen Ratios:
30% oxygen
40% oxygen
50% oxygen - correct answer- 30% 8:1
40% 3:1
50% 1.7:1
Albuterol - correct answer- Bronchodilator, 0.5 mL,
treats wheezing, side effect tremors
ANSWERS 100% CORRECT (FULLY
SOLVED)
3-Layer Sputum - correct answer- Bronchiectasis
A "Restrictive" problem would have to do with VOLUME OR
FLOW - correct answer- Volume
A "weak and thready" pulse is associated with? - correct
answer- Decrease in strength of cardiac contraction (CHF)
A 62-year-old female has the following arterial blood gas results
on room air:
pH: 7.37
PaCO2: 38 torr
PaO2: 60 torr
The co-oximeter is currently down for repair at this time. The
physician has asked you to estimate the SaO2. You would
estimate the SaO2 to be which of the following?
A. 75%
B. 80%
,C. 85%
D. 90% - correct answer- To estimate the SaO2;
PaO2 + 30 =SaO2
A 75-year-old patient with COPD is receiving oxygen at home by
nasal cannula with a bubble humidifier. How should the
respiratory therapist instruct the patient to clean his humidifier?
A. Place it on the top shelf of the dishwasher.
B. Soak it in an acetic acid solution for 20 minutes and rinse with
water.
C. Rinse it with distilled water and allow to air dry.
D. Soak it in an alkaline glutaraldehyde solution for 30 minutes
and rinse with water. - correct answer- Answer is B.
Dishwasher would ruin it by the heat. Answer d would sterilize it
but to expensive and not practical for home setting.
A patient is breathing a mixture of 70% He / 30% O2 via non-
rebreather mask. The oxygen flowmeter indicates a flow of 12
L/min. What is the actual flow of gas to the mask?
A. 12 L/min
B. 16 L/min
,C. 19 L/min
D. 22 L/min - correct answer- Answer is C. flow 12 x
1.6 =19.2 so round off 19 is closest.
1.6 is the factor for He at 70%
A patient is on a ventilator and is in the process of being
weaned. What is the best way to continuously monitor the
minute ventilation?
A. Chest transducers
B. Thermistors
C. Water seal spirometer
D. Pneumotachometer - correct answer- Best way to
continuously monitor minute ventilation. Chest transducers
measure effort to breathe; thermistor is a temperature probe
that will measure effort; water seal spirometer is very accurate
in measuring volumes but it can't continuously measure minute
ventilation because it will run out of room; Pneumotachometer
will measure flow passing through it for as long as you want, so
ANSWER is D, Pneumotachometer.
A patient's PvO2 has decreased from 30 torr to 20 torr. This is
indicative of a/an:
, A. Decreased SVR
B. Increased cardiac index
C. Decreased cardiac output
D. Decreased PVR - correct answer- PvO2 decreased.
Venous decreases and increases are directly associated with
cardiac output. Cardiac index goes up and down with cardiac
output so it would not increase; Decreased PVR is talking about
pulmonary resistance. ANSWER is C, decreased cardiac output.
Accessory Muscle Hypertrophy associated with... - correct
answer- COPD
Air to Oxygen Ratios:
30% oxygen
40% oxygen
50% oxygen - correct answer- 30% 8:1
40% 3:1
50% 1.7:1
Albuterol - correct answer- Bronchodilator, 0.5 mL,
treats wheezing, side effect tremors
