A patient with a longstanding diagnosis of generalized anxiety disorder presents to the emergency room. The triage nurse notes upon an assessment that the patient is hyperventilating. The triage nurse is aware that hyperventilation is the MOST common cause of which acid-base imbalance?
Respiratory Acidosis
Metabolic Alkalosis
Metabolic Acidosis
Respiratory Alkalosis
The Correct Answer is D
A. Respiratory Acidosis:
Explanation: Respiratory acidosis occurs when there is inadequate elimination of carbon dioxide, leading to an increase in PaCO2 and a decrease in blood pH. This is typically associated with conditions that impair ventilation.
B. Metabolic Alkalosis:
Explanation: Metabolic alkalosis is characterized by an elevated blood pH and bicarbonate (HCO3-) concentration. It is not directly caused by hyperventilation but is often associated with conditions such as excessive vomiting or excessive bicarbonate intake.
C. Metabolic Acidosis:
Explanation: Metabolic acidosis is characterized by a decrease in blood pH and bicarbonate concentration. It is not directly caused by hyperventilation but may result from conditions such as diabetic ketoacidosis or lactic acidosis.
D. Respiratory Alkalosis:
Explanation: Hyperventilation is the most common cause of respiratory alkalosis. During hyperventilation, there is an excessive loss of carbon dioxide (CO2) through rapid breathing, leading to a decrease in the partial pressure of carbon dioxide (PaCO2) in the blood. This results in an increase in blood pH, causing an alkalotic state.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. "If a vial of insulin will be used up within 21 days, it may be kept at room temperature."
This statement suggests a duration of up to 21 days for room temperature storage after the vial is in use. However, most insulins can typically be stored at room temperature for up to 28 days after initial use. This recommendation might be more conservative than necessary for many types of insulin.
B. "If a vial of insulin will be used up within 2 weeks, it may be kept at room temperature."
This choice suggests a timeframe of 14 days for room temperature storage after opening the vial. However, for many insulins, the recommended duration for room temperature storage after opening is up to 28 days.
C. "If you are going to use up the vial within 1 month, it can be kept at room temperature."
This option extends the timeframe to 1 month for room temperature storage after the vial is in use. However, the generally recommended duration for many insulins is up to 28 days after opening.
D. "If a vial of insulin will be used up within 1 week, it may be kept at room temperature."
This choice suggests a very short duration of 7 days for room temperature storage after opening the vial. Most insulins can typically be stored at room temperature for a longer duration after initial use.
Correct Answer is C
Explanation
A. "The parathyroid has no effect on calcium levels in the body; this will just help prevent osteoporosis":
Explanation: This statement is incorrect. The parathyroid gland plays a crucial role in calcium homeostasis. Hypoparathyroidism, characterized by decreased parathyroid hormone (PTH) production, leads to low blood calcium levels, not high levels.
B. "The reason you have hypoparathyroidism is that you were diagnosed with hypothyroidism, and when the thyroid doesn't work, neither does the parathyroid, so you need these supplements."
Explanation: This statement is incorrect. The parathyroid and thyroid are separate glands with distinct functions. Hypoparathyroidism is not a result of hypothyroidism.
C. "A decrease in parathyroid hormone causes low calcium levels, so your body to break down bones to maintain normal calcium levels, and this will prevent that from happening."
Explanation: This is the correct statement. Hypoparathyroidism leads to a decrease in PTH, resulting in low blood calcium levels. Without sufficient PTH, the body may resort to breaking down bones to maintain calcium levels.
D. "An increase in parathyroid hormone causes your body to move calcium into the cells to reduce blood calcium levels, so you have to replace the levels in the blood."
Explanation: This statement is incorrect. An increase in parathyroid hormone (PTH) typically leads to increased blood calcium levels by promoting the release of calcium from bones and reducing calcium excretion by the kidneys. This describes hyperparathyroidism, not hypoparathyroidism.
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