WGU D236 OBJECTIVE ASSESSMENT
PATHOPHYSIOLOGY EXAM – VERIFIED QUESTIONS
AND ANSWERS FOR AN A GRADE
Pressure that is due to albumin in the bloodstream?
Oncotic
Oncotic
a form of osmotic pressure exerted by proteins
In the blood, _____ is the most common plasma protein and is, therefore, a primary
determinant of oncotic pressure
albumin
_____ controls osmotic pressure in vascular system, builds volume
Albumin
One question was about the difference in children and adult immunity
Possible answer: naive T cells
,Learning check question: Which differences in immunity make children and older adult
patients more susceptible to infections? Choose 2 answers
Younger patients have fewer memory cells to combat infection
Older adult patients have a dwindling population of naive T cells
Older adult patients have more memory cells to combat infection
Younger patients have a large population of naive T cells
Older adult patients have a large population of naive T cells
Younger patients have fewer memory cells to combat infection
Older adult patients have a dwindling population of naive T cells
Rationale: younger patients have not been exposed to many pathogens, which means
that they have fewer memory cells than adults. The primary immune response is
relatively weak compared to a secondary response mediated by memory cells.
Older adult patients do not have as many T cells compared to younger patients. When
these patients encounter novel pathogens, the reduced number of naive T cells gives
clonal selection fewer opportunities to "find" T cells that will be effective.
Fluid and electrolyte levels are regulated by _______, which regulates actions such as
thirst, ADH, the kidneys, and RAAS.
osmoreceptors
,Fluid deficit causes
-Excessive loss
-Inadequate intake
-Or combination of both
Fluid deficit risk factors
-Vomiting/diarrhea
-Excessive sweating
-Insufficient water intake
Fluid deficit manifestations
-dry mucous membranes
-decreased skin turgor
-decreased urine output
-low blood pressure
-tachycardia
-confusion
ROME for ABGs
Respiratory Opposite Metabolic Equal
, If pH and pCO2 are moving in opposite directions, then it is pCO2 levels that are
causing the imbalance and it is respiratory in nature
If they are moving the same direction then it is metabolic in nature
Buffers, renal compensation, and respiratory compensation help to maintain a blood pH
of _______
7.35-7.45
A patient with a viral illness and severe vomiting has an elevated CO2 level and a blood
pH of 7.53. She is breathing slowly. What condition does the patient have?
Metabolic alkalosis
Metabolic acidosis
Respiratory alkalosis
Respiratory acidosis
Metabolic alkalosis
The patient's pH and CO2 level are both elevating (moving in the same direction). This
indicates metabolic alkalosis. The CO2 level is high because her respiratory system is
attempting to compensate for the high pH by exhaling less and retaining more CO2
To prevent changes in pH, the body employs buffer systems. The body utilizes 3 buffer
systems:
proteins, phosphates, and the carbonic acid-bicarbonate system
PATHOPHYSIOLOGY EXAM – VERIFIED QUESTIONS
AND ANSWERS FOR AN A GRADE
Pressure that is due to albumin in the bloodstream?
Oncotic
Oncotic
a form of osmotic pressure exerted by proteins
In the blood, _____ is the most common plasma protein and is, therefore, a primary
determinant of oncotic pressure
albumin
_____ controls osmotic pressure in vascular system, builds volume
Albumin
One question was about the difference in children and adult immunity
Possible answer: naive T cells
,Learning check question: Which differences in immunity make children and older adult
patients more susceptible to infections? Choose 2 answers
Younger patients have fewer memory cells to combat infection
Older adult patients have a dwindling population of naive T cells
Older adult patients have more memory cells to combat infection
Younger patients have a large population of naive T cells
Older adult patients have a large population of naive T cells
Younger patients have fewer memory cells to combat infection
Older adult patients have a dwindling population of naive T cells
Rationale: younger patients have not been exposed to many pathogens, which means
that they have fewer memory cells than adults. The primary immune response is
relatively weak compared to a secondary response mediated by memory cells.
Older adult patients do not have as many T cells compared to younger patients. When
these patients encounter novel pathogens, the reduced number of naive T cells gives
clonal selection fewer opportunities to "find" T cells that will be effective.
Fluid and electrolyte levels are regulated by _______, which regulates actions such as
thirst, ADH, the kidneys, and RAAS.
osmoreceptors
,Fluid deficit causes
-Excessive loss
-Inadequate intake
-Or combination of both
Fluid deficit risk factors
-Vomiting/diarrhea
-Excessive sweating
-Insufficient water intake
Fluid deficit manifestations
-dry mucous membranes
-decreased skin turgor
-decreased urine output
-low blood pressure
-tachycardia
-confusion
ROME for ABGs
Respiratory Opposite Metabolic Equal
, If pH and pCO2 are moving in opposite directions, then it is pCO2 levels that are
causing the imbalance and it is respiratory in nature
If they are moving the same direction then it is metabolic in nature
Buffers, renal compensation, and respiratory compensation help to maintain a blood pH
of _______
7.35-7.45
A patient with a viral illness and severe vomiting has an elevated CO2 level and a blood
pH of 7.53. She is breathing slowly. What condition does the patient have?
Metabolic alkalosis
Metabolic acidosis
Respiratory alkalosis
Respiratory acidosis
Metabolic alkalosis
The patient's pH and CO2 level are both elevating (moving in the same direction). This
indicates metabolic alkalosis. The CO2 level is high because her respiratory system is
attempting to compensate for the high pH by exhaling less and retaining more CO2
To prevent changes in pH, the body employs buffer systems. The body utilizes 3 buffer
systems:
proteins, phosphates, and the carbonic acid-bicarbonate system
