29 Questions
What is the primary purpose of homeostasis?
To maintain a stable internal environment
Why are lab values important for patient care?
They are used to diagnose and monitor conditions
What is the significance of the variation in 'normal' lab values between different healthcare institutions?
It means that patients should be evaluated based on their own baseline values
Which of the following is NOT a key component of homeostasis?
Nutrient absorption
Which of the following is NOT a potential cause of polycythemia?
Iron deficiency anemia
What is the primary function of red blood cells (RBCs)?
To carry oxygen to the body's tissues
What is the normal range for hemoglobin levels in adult males?
14-18 g/dL
If a patient has a low red blood cell count, what is the condition called?
Anemia
What is the primary site of red blood cell production in the body?
Bone marrow
What is the primary mechanism by which the body maintains homeostasis?
Negative feedback loops
Which of the following is the MOST important factor in determining 'normal' lab values for a patient?
The specific hospital or healthcare institution
How do abnormal lab values typically indicate a patient's condition?
They could be a result of the patient's illness or a complication
Which of the following is the MOST important reason why lab values are likely to appear on the NCLEX exam?
They assess a nurse's ability to interpret diagnostic test results
Which of the following is the LEAST important component of homeostasis, according to the information provided?
Hormone regulation
If a patient presents with symptoms of fatigue, shortness of breath, and pale skin, which lab value would be most indicative of the underlying condition?
Decreased red blood cell count and hemoglobin levels
A patient living at a high altitude is found to have an elevated red blood cell count. What is the most likely underlying mechanism for this condition?
Compensatory response to low oxygen levels by increasing red blood cell production
In a patient with chronic kidney disease, which lab value would you expect to be affected, and how?
Decreased red blood cell count due to decreased erythropoietin production
A patient with a history of heavy menstrual bleeding is found to have a low hemoglobin level. What is the most appropriate initial management strategy?
Administer iron supplements and monitor hemoglobin levels
A patient with a history of smoking and chronic obstructive pulmonary disease (COPD) is found to have an elevated red blood cell count. What is the most likely underlying mechanism?
Compensatory response to chronic hypoxia due to impaired lung function
Why is it crucial for living organisms to maintain homeostasis?
To prevent dehydration and electrolyte imbalances
What is the significance of knowing lab values in patient care?
To accurately diagnose medical conditions in patients
Why do 'normal' lab values vary between different healthcare institutions?
Because 'normal' values can have slight variations based on testing methods and equipment used
What is the primary purpose of drawing lab values from patients?
To measure specific variables in the patient's body for diagnostic purposes
How do abnormal lab values impact patient care?
By suggesting that the patient may be experiencing an illness or complications
What is the primary consequence of having too many red blood cells, according to the passage?
Increased risk of blood clots
What is the primary mechanism by which the body responds to having too few red blood cells, according to the passage?
Increasing production of red blood cells in the bone marrow
Why does the NCLEX exam typically present lab values that are significantly abnormal, rather than slightly abnormal, according to the passage?
To assess the student's competence in interpreting lab results
According to the passage, what is the primary function of red blood cells (RBCs)?
To transport oxygen to the body's tissues
Which of the following is the MOST important factor in determining 'normal' lab values for a patient, according to the information provided?
The patient's age and gender
Explore the concept of homeostasis, specifically focusing on the balance of fluids and electrolytes in the body. Learn how living organisms maintain stability through proper regulation of fluid and electrolyte levels for normal cell function and overall health.
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