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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
When the skin surface is caked with desquamated skin and sebaceous secretions after the removal of a cast, the nurse should suggest washing the area with warm water and soap. This will help to gently cleanse the skin and remove the accumulated material without causing unnecessary trauma or irritation.
Option A, applying powder to absorb the material, may not effectively remove the caked material and could potentially lead to further clumping or discomfort.
Option B, vigorously scrubbing the leg, can be harsh on the skin and may cause skin irritation, redness, or even abrasions. It is important to be gentle and avoid excessive scrubbing, especially on the fragile and recently exposed skin.
Option C, carefully picking the material off the leg, can increase the risk of skin injury or introduce bacteria into the skin. Picking at the skin should be avoided to prevent further damage or infection.
Therefore, option D, washing the area with warm water and soap, is the most appropriate and gentle method to remove the caked material from the skin surface
Correct Answer is B
Explanation
The statement that best describes why infants are at greater risk for dehydration than older children is option B. Infants have an increased extracellular fluid volume compared to older children. This means that a larger proportion of their total body fluid is located outside the cells, in the extracellular compartment. This higher extracellular fluid volume makes infants more susceptible to fluid losses and dehydration if they experience inadequate fluid intake or increased fluid losses.
infants have an increased ability to concentrate urine in (option A), is incorrect. Infants have limited renal function and may have difficulty concentrating urine compared to older children and adults. This can contribute to a higher risk of dehydration in infants.
infants have a greater volume of intracellular fluid in (option C), is incorrect. The volume of intracellular fluid is not the primary factor contributing to the increased risk of dehydration in infants.
infants have a smaller body surface area in (option D) is incorrect because it, is not directly related to the increased risk of dehydration. Body surface area influences heat exchange and fluid loss through sweating but is not the main factor contributing to the higher risk of dehydration in infants.
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