Exam (elaborations)
BIOL 1049 HUMAN PHYSIOLOGY LINDSEY JONES J MULTIPLE CHOICE EXAM TEST QUESTIONS AND ANSWERS
- Course
- Institution
BIOL 1049 HUMAN PHYSIOLOGY LINDSEY JONES J MULTIPLE CHOICE EXAM TEST QUESTIONS AND ANSWERS
[Show more]
Content preview
BIOL 1049 HUMAN PHYSIOLOGY LINDSEY JONES JMULTIPLE CHOICE EXAM TEST QUESTIONS AND
ANSWERS
PEP therapy is contraindicated by sinusitis, epistaxis, and a middle ear
infection.
A patient who weighs 65-kg (143-lb) is receiving mechanical ventilator
support on the following settings with the following corresponding blood
gases show:
pH 7.29
PaCO2 52 mm Hg
PaO2 78 mm Hg
HCO3- 26 mEq/L
BE +2 mEq/L
The respiratory therapist should recommend:
A. increase rate to 18
B. increase tidal volume to 500
C. increase PEEP to 10 cmH2O
D. add pressure support of 5 cmH2O
Verified Answer -A. increase rate to 18
This patient has arterial blood gases that show hypoventilation. Mild
hypoxemia is also present. When there is a problem with both ventilation
and oxygenation at the same time, ventilation should be corrected first.
This is because the hypoxemia may be caused by hypoventilation. The
proper way to increase ventilation is to either increase rate, or increase
,tidal volume. Any time the CO2 is off by more than 4 mmHg a change in
tidal volume is insufficient. An increase in rate is required.
The respiratory therapist observes an ECG wave form on a patient that is
consistent with atrial tachycardia. The patient is complaining of chest pain,
dizziness, and nausea. The respiratory therapist should recommend
A. sychronized defibrillation
B. Atropine sulfate
C. unsynchronized defibrillation
D. epinephrine
Verified Answer -A. sychronized defibrillation
Non-deadly arrhythmias, such as this one, may be addressed through
cardioversion, also called synchronized defibrillation. Cardioversion is a
form of defibrillation with low wattage and with the synchronization set to
"active". This allows the shock to be sychronized to the R wave.
An adult male has had a unilateral wheeze, when auscultating the chest,
for several months. Which of the following is the most likely cause?
A. bronchoconstriction
B. a cancerous mass in the pulmonary tree
C. idiopathic pulmonary fibrosis
D. ARDS
Verified Answer -B. a cancerous mass in the pulmonary tree
,The presence of a unilateral wheeze that has persisted for several months
is not likely related to bronchoconstriction. When bronchoconstriction is
present, wheezing is usually noted bilaterally. The unilateral wheeze, in
conjunction with its persistence for several months, is most likely caused
by a mass in the pulmonary tree. This mass may be cancerous or benign.
Immediately following oral intubation, which of the following devices
would be most helpful in determining if the ET tube is correctly positioned
in the trachea?
A. transcutaneous CO2 monitor
B. pulse oximetery
C. SvO2 monitor
D. infrared CO2 detection device
Verified Answer -D. infrared CO2 detection device
Of the devices listed, an infrared CO2 detection device may be used to
determine if adequate CO2 is being exhaled from the ET tube during
ventilation. If the endotracheal tube is inadvertently placed inside the
esophagus end-tidal CO2 will read nearly 0, indicating a need to remove
and reposition the endotracheal tube.
Pulmonary function is done on a 68-year old male with a 20-pack-year
history of smoking. The following pulmonary function data is recorded:
FVC 83
SVC 85
Fev1/FVC% 62
FEF200-1200 78
, FEF 25-75 60
DLCO 22
Which of the following most likely represents the patient's condition?
A. sarcoidosis
B. emphysema
C. chronic bronchitis
D. asbestosis
Verified Answer -C. chronic bronchitis
Pulmonary function test data indicates the patient has an obstructed defect.
This is manifest by a reduced FEV1/FVC%. Anything less than 75% is
considered abnormal. The SVC is normal and therefore indicates the
patient has no restrictive defect. So, we must pick an answer that is an
obstructive disease. When we look at the answers we see there are two
options - emphysema and chronic bronchitis. To know which one it is we
must look back at the pulmonary function testing data and observe the
DLCO. Only emphysema shows a poor DLCO. In this case the DLCO is
greater than 20 CO/min/mmHg and is therefore normal. This means that
emphysema can not be the correct option leaving only chronic bronchitis
as the only possible correct choice.
A patient who weighs 68 kg (150 lb) has a minute ventilation requirement
of 14 L/min to maintain a PaCO2 of 38 torr. Which of the following can
explain the ventilatory requirements?
A. CNS depression
B. excessive caloric intake
C. obstructive apnea
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller AcademicAllure. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62890 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
