TMC practice test Questions and Correct
Answers 100%
You note in the chart of a patient's who is receiving volume
control ventilation that the plateau pressure has been
increasing over the last 6 hours, while the PEEP levels
remains constant. Which of the following would be the most
likely cause of this change?
Select one:
A. development of pulmonary edema
B. water accumulation in the ventilator circuit
C. partial obstruction of the endotracheal tube
D. development of bronchospasm - ans-An increase in the
plateau pressure relative to baseline (Pplat-PEEP) indicates
a decrease in the patient's lung and/or thoracic compliance.
Common causes of a decrease in lung compliance are
,pneumothorax, pulmonary edema, atelectasis and ARDS.
Partial obstruction of the ET tube and development of
bronchospasm would increase airway resistance and thus
increase PIP and the PIP-Pplat pressure difference, but not
affect Pplat.
The correct answer is: development of pulmonary edema
The difference between the mean arterial pressure (MAP)
and intracranial pressure (ICP) is the:
Select one:
A. cerebral perfusion pressure
B. cerebral vascular resistance
C. blood-brain barrier pressure
D. jugular venous pressure - ans-The difference between
the mean arterial pressure (MAP) and intracranial pressure
(ICP) is the cerebral perfusion pressure (CPP); CPP = MAP -
ICP. As this equation makes clear, any factor that increases
ICP and/or lowers MAP will decrease CPP and thus
potentially cause brain damage or death. In general
,perfusion is adequate if the CPP can be maintained between
60 to 100 mm Hg.
The correct answer is: cerebral perfusion pressure
Which of the following would provide the best bedside
assessment of the need for mechanical ventilation in a
patient with Guillain-Barre syndrome?
Select one:
A. FRC
B. VC
C. airway resistance
D. TLC - ans-Guillain-Barre syndrome is a restrictive
neuromuscular disorder that results in hypoventilation.
Airway resistance measures are not useful in diagnosing
restrictive ventilatory impairments. Restrictive ventilatory
impairments are characterized by low lung volumes. Of the
volumes listed, only the vital capacity (VC) can be measured
at bedside
, The correct answer is: VC
The normal range of adult blood pressure
(systolic/diastolic) is about:
Select one:
A. 80-100/40-70 mm Hg
B. 100-140/60-90 mm Hg
C. 120-140/90-100 mm Hg
D. 130-150/100-110 mm Hg - ans-Normal systolic pressure
range from 100 to 140 mm Hg, with an average of 120 mm
Hg. Normal diastolic pressures range from 60 to 90 mm Hg,
with an average of 80 mm Hg. The blood pressure is
recorded with systolic listed over diastolic; i.e., 120/80 mm
Hg.
The correct answer is: 100-140/60-90 mm Hg
A patient admitted to the ED exhibits wheezing and
hypoxemia on room air. Lab tests indicate a normal B-type
Answers 100%
You note in the chart of a patient's who is receiving volume
control ventilation that the plateau pressure has been
increasing over the last 6 hours, while the PEEP levels
remains constant. Which of the following would be the most
likely cause of this change?
Select one:
A. development of pulmonary edema
B. water accumulation in the ventilator circuit
C. partial obstruction of the endotracheal tube
D. development of bronchospasm - ans-An increase in the
plateau pressure relative to baseline (Pplat-PEEP) indicates
a decrease in the patient's lung and/or thoracic compliance.
Common causes of a decrease in lung compliance are
,pneumothorax, pulmonary edema, atelectasis and ARDS.
Partial obstruction of the ET tube and development of
bronchospasm would increase airway resistance and thus
increase PIP and the PIP-Pplat pressure difference, but not
affect Pplat.
The correct answer is: development of pulmonary edema
The difference between the mean arterial pressure (MAP)
and intracranial pressure (ICP) is the:
Select one:
A. cerebral perfusion pressure
B. cerebral vascular resistance
C. blood-brain barrier pressure
D. jugular venous pressure - ans-The difference between
the mean arterial pressure (MAP) and intracranial pressure
(ICP) is the cerebral perfusion pressure (CPP); CPP = MAP -
ICP. As this equation makes clear, any factor that increases
ICP and/or lowers MAP will decrease CPP and thus
potentially cause brain damage or death. In general
,perfusion is adequate if the CPP can be maintained between
60 to 100 mm Hg.
The correct answer is: cerebral perfusion pressure
Which of the following would provide the best bedside
assessment of the need for mechanical ventilation in a
patient with Guillain-Barre syndrome?
Select one:
A. FRC
B. VC
C. airway resistance
D. TLC - ans-Guillain-Barre syndrome is a restrictive
neuromuscular disorder that results in hypoventilation.
Airway resistance measures are not useful in diagnosing
restrictive ventilatory impairments. Restrictive ventilatory
impairments are characterized by low lung volumes. Of the
volumes listed, only the vital capacity (VC) can be measured
at bedside
, The correct answer is: VC
The normal range of adult blood pressure
(systolic/diastolic) is about:
Select one:
A. 80-100/40-70 mm Hg
B. 100-140/60-90 mm Hg
C. 120-140/90-100 mm Hg
D. 130-150/100-110 mm Hg - ans-Normal systolic pressure
range from 100 to 140 mm Hg, with an average of 120 mm
Hg. Normal diastolic pressures range from 60 to 90 mm Hg,
with an average of 80 mm Hg. The blood pressure is
recorded with systolic listed over diastolic; i.e., 120/80 mm
Hg.
The correct answer is: 100-140/60-90 mm Hg
A patient admitted to the ED exhibits wheezing and
hypoxemia on room air. Lab tests indicate a normal B-type
