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Fine crepitant crackles are most commonly associated with which of the
following conditions.
a. Bronchiectasis
b. Congestive heart failure
c. Pneumonia
d. Croup
Crackles are associated with fluid so a, b, and c would be good
answers, but "fine crepitant" crackles indicates fluid entering alveoli
(pulmonary edema) which is most often caused by heart failure so the
best ANSWER is B. (with croup you would hear more of a stridor
sound).
A patient is found in full cardiopulmonary arrest. CPR is started and the patient is
orally intubated with an EtCO2 monitor attached. Which of the following EtCO2
patterns would the respiratory therapist expect to observe on the monitor?
a. Initially high, then falling
b. Initially low, then rising
c. Initially high, stays high
d. Initially low, stays low
Full cardiac arrest will cause the CO2 in the lungs to slowly dissipate out because
no blood is flowing, then during CPR when you get blood flowing, the CO2
should slowly rise back up;
so ANSWER is B
,If the blood pressure obtained from the arterial line is higher than the
blood
pressure obtained from a sphygmomanometer (cuff pressure). Based upon
this information, the respiratory therapist should conclude that.
a. Non-compliant tubing is being used
b. Transducer is placed too low
c. Patient was lying flat during the measurement of the arterial line
pressure
d. Transducer dome contained air bubbles
Arterial line BP and cuff pressure should be the same, so there is a
problem.
Non-compliant tubing is a good thing because it's a stiff tubing, if
transducer is placed too high (above the heart), the flood will have to
go uphill and you will get a lower pressure; transducer dome
contained air bubbles would give you
erratic readings but not a higher reading, but if the transducer is placed
too low
(below heart), the blood is flowing downhill & will give a higher pressure
reading, so ANSWER is B
,A 2-year old child enters the emergency room. The mother states that
the child was playing with friends and developed violent coughing
and unilateral wheezing. Physical examination reveals a hyperresonant
percussion note on the left and resonant percussion on the right.
Inspiratory and expiratory chest films
indicate air trapping with no foreign bodies "noted." The respiratory
therapist should suspect the child has.
a.pneumothorax
b.orthopnea
c.aspirated a foreign
object d.tachyphylaxis
Unilateral wheezing indicates aspirated object and fact that the child was
playing with friends causes you to believe the child inhaled a small toy or
something,
hyperresonant percussion indicates air trapping, so you are thinking
foreign
object but x-ray says no foreign bodies "noted." Just because it says
"noted" does not mean something is not there, it just means it could not
be seen on the xray,
also if the child had swallowed a small plastic toy, "plastic" does not show
up on xrays (radiolucent). The ANSWER is C
, A patient is admitted to the ICU complaining of nausea and chest pain.
A nasogastric tube has been inserted to help relieve the nausea. The
patient was started on Lasix and nitroglycerin. Which of the following
should be monitored to closely identify side effects at this time.
a. Cardiac enzymes
b. Serum electrolytes
c. Arterial blood gases
d. Digitalis levels
Since the patient received Lasix and nasogastric tube, they are losing
fluids, and a side effect of fluid loss is a decrease in electrolytes, so
ANSWER is B (there isn't enough evidence of heart attack to justify
cardiac enzymes, also they are used to confirm a heart attack).
Which of the following will determine aortic pulse pressure.
a. systolic + systolic + diastolic/3
b. diastolic + pulse pressure/3
c. systolic pressure - diastolic pressure
d. stroke volume x heart rate x 10.
Aortic pulse pressure is just the difference between systolic and
diastolic pressure, so ANSWER is C