A student nurse is working with their preceptor on a medical-surgical unit. While reviewing concepts related to acid-base balance, what should the preceptor state is a compensatory mechanism for metabolic alkalosis?
Kidney conservation of bicarbonate and excretion of hydrogen ions
Deep, rapid respirations to increase CO2 excretion
Respiratory hypoventilation to retain CO2 and kidney excretion of bicarbonate
Shifting of bicarbonate into cells in exchange for chloride
The Correct Answer is C
A. Kidney conservation of bicarbonate and excretion of hydrogen ions: This option is not correct for metabolic alkalosis. In metabolic alkalosis, the kidneys would typically excrete bicarbonate rather than conserve it.
B. Deep, rapid respirations to increase CO2 excretion: This is incorrect because deep, rapid respirations are more associated with compensating for metabolic acidosis by increasing CO2 excretion. In metabolic alkalosis, the body attempts to retain CO2.
C. Respiratory hypoventilation to retain CO2 and kidney excretion of bicarbonate: This is the correct choice. In metabolic alkalosis, the body compensates by reducing respiration rate (hypoventilation) to retain CO2, which helps to counteract the elevated pH. Additionally, the kidneys may excrete bicarbonate to balance the pH.
D. Shifting of bicarbonate into cells in exchange for chloride: This mechanism is more related to respiratory alkalosis rather than metabolic alkalosis. In metabolic alkalosis, the primary compensatory mechanisms involve changes in respiratory rate and renal bicarbonate excretion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Intraosseous line: Intraosseous lines are used for emergency situations when peripheral access is not available, and are not suitable for long-term chemotherapy administration due to the risk of complications and discomfort.
B. Intrathecal catheter: Intrathecal catheters are used for delivering medication directly into the spinal canal. They are not suitable for systemic chemotherapy administration, which requires vascular access.
C. Peripheral intravenous line: Peripheral intravenous lines are typically used for short-term treatments. They are not ideal for long-term chemotherapy because they need frequent replacement, and the veins can become damaged from prolonged use of chemotherapeutic agents.
D. Subcutaneous implantable port: A subcutaneous implantable port is the best option for long-term chemotherapy. It is implanted under the skin, reducing the risk of infection, and provides a stable and reliable access point for repeated treatments over several months.
Correct Answer is D
Explanation
A. Neuromuscular blockers: These are used to induce paralysis and do not affect consciousness or maintain reflexes such as the gag reflex.
B. Inhaled general anesthesia: Generally, inhaled general anesthesia suppresses all reflexes, including the gag reflex.
C. Intravenous general anesthesia: This type of anesthesia typically induces a loss of consciousness and suppression of reflexes, including the gag reflex.
D. Regional anesthesia: This type of anesthesia blocks sensation in a specific area of the body while the client remains conscious and retains reflexes, including the gag reflex.
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