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 C
Explanation
In the given scenario, the 6-year-old patient in skeletal traction is experiencing
pain, edema, and fever. These symptoms raise concerns about the possibility of an infection
at the site of traction. In such cases, the nurse should assess for warmth at the site of pain.
Increased warmth can indicate inflammation, which may be associated with infection. This
assessment finding would require further investigation and intervention, such as notifying the
healthcare provider and obtaining appropriate cultures or imaging studies.
Neurologic status in (Option A) is incorrect because assessing neurologic status, is important
but not the priority in this scenario. Neurologic status assessment is typically performed to
evaluate any neurovascular compromise resulting from the traction, but the presence of pain,
edema, and fever suggests a potential infection that requires immediate attention.
Range of motion of all extremities in (Option B) is incorrect because assessing the range of
motion of all extremities, is not directly relevant to the given symptoms and should not take
priority over assessing for warmth at the site of pain.
Blood pressure in (Option D) is incorrect because assessing blood pressure, is not directly
related to the symptoms of pain, edema, and fever in the context of skeletal traction. While
blood pressure is an essential vital sign, it does not provide specific information about the
potential infection at the site of pain in this situation.
Correct Answer is C
Explanation
A sign of increased intracranial pressure (ICP) in a 10-year-old child is a headache. Headache is a common symptom associated with increased pressure within the cranial cavity. It can be a result of various conditions that cause elevated intracranial pressure, such as brain tumours, intracranial haemorrhage, hydrocephalus, or brain trauma. The headache may be described as persistent, worsening, or accompanied by other symptoms such as nausea, vomiting, or changes in neurological status.
tachypnoea (rapid breathing), in (option A) is incorrect because it is not a specific sign of increased intracranial pressure. It can be seen in various conditions, including respiratory and cardiovascular disorders, anxiety, or physical exertion.
bulging fontanel in (option B) is incorrect because it, is more commonly observed in infants and is not typically seen in older children. The fontanelles (soft spots) on an infant's skull normally close by the age of 18-24 months.
an increase in head circumference in (option D) is incorrect because it, may be a sign of increased intracranial pressure in infants. However, in a 10-year-old child, the fontanelles are typically closed, and head circumference growth is not a reliable indicator of increased intracranial pressure
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