The parents of a child with acid-base imbalance ask the nurse about mechanisms that regulate acid-base balance. Which statement by the nurse accurately explains the mechanisms regulating acid-base balance in children?
The cardiovascular and integumentary systems
The respiratory, renal, and chemical-buffering systems
The kidneys balance acid: the lungs balance base.
The skin, kidney, and endocrine systems
The Correct Answer is B
The regulation of acid-base balance in the body involves multiple systems working together. The respiratory system, renal system, and chemical-buffering systems play key roles in maintaining the balance of acids and bases in the body.
The respiratory system helps regulate acid-base balance through the control of carbon dioxide (CO2) levels in the blood. By adjusting the rate and depth of breathing, the respiratory system can increase or decrease the elimination of CO2, which affects the pH of the blood.
The renal system (kidneys) plays a crucial role in regulating acid-base balance by controlling the excretion and reabsorption of hydrogen ions (H+) and bicarbonate ions (HCO3-) in the urine. The kidneys can excrete excess acids or bases to help maintain the body's pH within a normal range.
The chemical-buffering systems involve various chemical compounds in the body that can absorb or release hydrogen ions to help maintain pH balance. Examples of chemical buffers include bicarbonate ions (HCO3-), phosphate ions (HPO4-), and proteins.
the cardiovascular and integumentary systemin (option A) is incorrect because they, are not primarily responsible for regulating acid-base balance in the body.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The most appropriate statement by the nurse to a 15-year-old whose friend has mentioned suicide is option A. The statement acknowledges the seriousness of the situation and emphasizes the importance of taking the friend's threat seriously. It also highlights the need for immediate help and intervention. Suicide threats should never be dismissed or taken lightly, and it is crucial to involve professionals who can provide appropriate support and assistance.
"Tell your friend to come to the clinic immediately," in option B is incorrect because places the responsibility solely on the 15-year-old to relay the message to their friend, which may not be the most effective or timely approach.
"If your friend mentions suicide again, get your friend some help," in (option C) is incorrect because it does not address the urgency of the situation. Waiting for the friend to mention suicide again before acting may lead to potential harm.
"You need to gather details about your friend's suicide plan," is incorrect because places the responsibility on the 15-year-old to gather information about the friend's suicidal intentions. While understanding the situation and obtaining relevant details is important, the immediate priority is ensuring the friend's safety and seeking professional help.
Correct Answer is C
Explanation
The most important factor in determining the rate of fluid replacement in a dehydrated child
is urine output. Urine output is a crucial indicator of renal perfusion and hydration status.
Monitoring urine output allows healthcare professionals to assess the child's response to fluid
replacement therapy and adjust the rate accordingly.
The type of dehydration in (Option A) is incorrect. The type of dehydration, is important in
determining the appropriate fluid composition for rehydration but does not directly dictate the
rate of fluid replacement.
The child’s weight in (Option B) is incorrect. The child's weight, is considered when
calculating the maintenance fluid requirements, but it does not solely determine the rate of
fluid replacement for dehydration.
Serum potassium level in (Option D) is incorrect. The serum potassium level, is important to
monitor in a dehydrated child, especially in cases of severe dehydration, as electrolyte
imbalances may occur. However, it is not the most important factor in determining the rate of
fluid replacement. Fluid replacement is primarily guided by assessing the child's hydration
status through parameters such as urine output and clinical assessment.
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