A neonate is displaying mottled skin, has a large fontanel and tongue, is lethargic, and is having difficulty feeding. The nurse recognizes that this is most suggestive of which disorder?
Hypoglycaemia
Hypothyroidism
Hypocalcaemia
Phenylketonuria (PKU)
The Correct Answer is B
Hypothyroidism refers to an underactive thyroid gland that does not produce enough thyroid hormones. In newborns, this condition is known as congenital hypothyroidism. The symptoms mentioned—mottled skin, a large fontanel (soft spot on the baby's head), a large tongue, lethargy, and difficulty feeding—are characteristic of hypothyroidism inneonates.
Mottled skin can occur due to decreased circulation and low body temperature associated with hypothyroidism. A large fontanel and tongue are common physical features seen in infants with hypothyroidism. Lethargy and poor feeding are also typical signs of this condition.
Hypoglycaemia in (option A) is incorrect because it refers to low blood sugar levels and usually presents withdifferent symptoms such as jitteriness, tremors, and sweating.
Hypocalcaemia in (option C) is incorrect because it is low calcium levels and can manifest with symptoms like muscle cramps, twitching, and seizures.
Phenylketonuria (PKU) in (option D) it is incorrect because it is a metabolic disorder characterized by the inability to metabolize the amino acid phenylalanine, and it typically presents with different symptoms such as intellectual disability and a musty door to the skin.
Therefore, based on the symptoms described, hypothyroidism (B) is the most likely disorder in this neonate. It isimportant to consult a healthcare professional for a proper diagnosis and appropriate treatment.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The assessment finding that the nurse should expect in an infant with Hirschsprung disease is option A, constipation with the passage of foul-smelling, ribbon-like stools. Hirschsprung disease is a congenital condition characterized by the absence of ganglion cells in the distal part of the colon, leading to functional obstruction. The affected segment of the colon lacks the normal peristaltic movements, resulting in an accumulation of faecal matter. The stools passed by infants with Hirschsprung disease are often constipated, and the narrow, ribbon- like appearance is a result of the narrowed segment of the colon.
diarrhea (option B) is incorrect because it, is not typically associated with Hirschsprung disease. Instead, the condition presents with constipation due to the obstructed bowel.
foul-smelling, fatty stools in (option C) is incorrect because it, is not characteristic of Hirschsprung disease. This finding may be associated with malabsorption disorders such as cystic fibrosis or celiac disease, but not specifically with Hirschsprung disease.
"currant jelly" stools in (option D) is incorrect because it, is a term commonly used to describe the stools seen in intussusception, which is a different condition involving the telescoping of one segment of the bowel into another. It is not an expected finding in Hirschsprung disease.
Correct Answer is B
Explanation
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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