Sherpath Questions with CORRECT Answers (Verified Update)
Q1: Which condition is a contraindication for using an invasive method to monitor intracranial
pressure (ICP)?
A. Skull fracture
B. Spinal infection
C. Neoplasm
D. Coagulopathy
Answer: D. Coagulopathy
Q2: Which monitoring device allows for intermittent drainage of cerebrospinal fluid?
A. Ventriculoperitoneal (VP) shunt
B. Intraventricular catheter
C. Intraparenchymal microchip
D. Fiberoptic sensor
Answer: B. Intraventricular catheter
Q3: Which wave type is considered significant because of the reduced cerebral perfusion
pressure (CPP) associated with intracranial pressure (ICP), in the range of 50 to 100 mm Hg?
A. Percussion wave
B. B wave
C. Tidal wave
D. Plateau wave
Answer: D. Plateau wave
Q4: Which formula is used to determine cerebral perfusion pressure?
A. Intracranial pressure minus the average diastolic blood pressure
B. Pulse pressure minus intracranial pressure
C. Mean arterial pressure minus intracranial pressure
D. Mean arterial pressure minus 70 mm Hg
Answer: C. Mean arterial pressure minus intracranial pressure
Q5: Which area of the skull is used to complete a transcranial Doppler (TCD) study?
A. Temporal
B. Frontal
C. Parietal
D. Maxillary
Answer: A. Temporal
, Q6: Which statement best describes how thermal diffusion flowmetry (TDF) works?
A. Uses heat to measure blood flow
B. Uses thermal clearance to measure perfusion
C. Uses ice water to measure brain function
D. Uses body temperature of the brain to estimate ischemic damage
Answer: B. Uses thermal clearance to measure perfusion
Q7: Which description best summarizes laser Doppler flowmetry (LDF)?
A. Invasive, indirect, qualitative
B. Invasive, direct, quantitative
C. Noninvasive, indirect, qualitative
D. Noninvasive, direct, quantitative
Answer: A. Invasive, indirect, qualitative
Q8: Which measure is taken by a LICOX monitor?
A. Partial brain parenchymal oxygen tension (PbtO2)
B. Oxygenase level
C. Oxygen consumption
D. Cerebral blood flow
Answer: A. Partial brain parenchymal oxygen tension (PbtO2)
Q9: Which factor limits the use of jugular bulb venous oxygen saturation (SjvO2)?
A. Oxygen consumption
B. Ischemic foci
C. Venous outflow
D. Arterial inflow
Answer: B. Ischemic foci
Q10: Which factor is a disadvantage of near-infrared spectroscopy (NIRS)?
A. Invasive
B. Requires multiple detectors
C. Unpredictable
D. High spatial resolution
Answer: C. Unpredictable
Q1: Which condition is a contraindication for using an invasive method to monitor intracranial
pressure (ICP)?
A. Skull fracture
B. Spinal infection
C. Neoplasm
D. Coagulopathy
Answer: D. Coagulopathy
Q2: Which monitoring device allows for intermittent drainage of cerebrospinal fluid?
A. Ventriculoperitoneal (VP) shunt
B. Intraventricular catheter
C. Intraparenchymal microchip
D. Fiberoptic sensor
Answer: B. Intraventricular catheter
Q3: Which wave type is considered significant because of the reduced cerebral perfusion
pressure (CPP) associated with intracranial pressure (ICP), in the range of 50 to 100 mm Hg?
A. Percussion wave
B. B wave
C. Tidal wave
D. Plateau wave
Answer: D. Plateau wave
Q4: Which formula is used to determine cerebral perfusion pressure?
A. Intracranial pressure minus the average diastolic blood pressure
B. Pulse pressure minus intracranial pressure
C. Mean arterial pressure minus intracranial pressure
D. Mean arterial pressure minus 70 mm Hg
Answer: C. Mean arterial pressure minus intracranial pressure
Q5: Which area of the skull is used to complete a transcranial Doppler (TCD) study?
A. Temporal
B. Frontal
C. Parietal
D. Maxillary
Answer: A. Temporal
, Q6: Which statement best describes how thermal diffusion flowmetry (TDF) works?
A. Uses heat to measure blood flow
B. Uses thermal clearance to measure perfusion
C. Uses ice water to measure brain function
D. Uses body temperature of the brain to estimate ischemic damage
Answer: B. Uses thermal clearance to measure perfusion
Q7: Which description best summarizes laser Doppler flowmetry (LDF)?
A. Invasive, indirect, qualitative
B. Invasive, direct, quantitative
C. Noninvasive, indirect, qualitative
D. Noninvasive, direct, quantitative
Answer: A. Invasive, indirect, qualitative
Q8: Which measure is taken by a LICOX monitor?
A. Partial brain parenchymal oxygen tension (PbtO2)
B. Oxygenase level
C. Oxygen consumption
D. Cerebral blood flow
Answer: A. Partial brain parenchymal oxygen tension (PbtO2)
Q9: Which factor limits the use of jugular bulb venous oxygen saturation (SjvO2)?
A. Oxygen consumption
B. Ischemic foci
C. Venous outflow
D. Arterial inflow
Answer: B. Ischemic foci
Q10: Which factor is a disadvantage of near-infrared spectroscopy (NIRS)?
A. Invasive
B. Requires multiple detectors
C. Unpredictable
D. High spatial resolution
Answer: C. Unpredictable
