During an assessment, the nurse determines that a client with hypothyroidism has a goiter. An increase in which laboratory test result(s) supports this finding?
Thyroid stimulating hormone (TSH).
Iodine.
Calcium.
Serum triiodothyronine (T3) and thyroxine (T4).
The Correct Answer is A
Choice A reason: In hypothyroidism, elevated TSH reflects the pituitary’s attempt to stimulate an underactive thyroid, often causing goiter due to glandular hypertrophy. TSH rises to compensate for low thyroid hormone production, leading to thyroid enlargement. This aligns with the pathophysiology of goiter in primary hypothyroidism, supporting the clinical finding.
Choice B reason: Iodine levels are not routinely measured in hypothyroidism and do not directly cause goiter. Iodine deficiency may contribute to goiter but is less common in developed regions. Elevated TSH, not iodine, drives thyroid enlargement in hypothyroidism, making this an incorrect marker for supporting the goiter finding.
Choice C reason: Calcium levels are unrelated to goiter or hypothyroidism unless parathyroid dysfunction is involved. Goiter results from TSH-driven thyroid hypertrophy due to low thyroid hormones. Calcium does not influence thyroid enlargement, making it an irrelevant laboratory result for supporting the client’s goiter in this context.
Choice D reason: Serum T3 and T4 are decreased in hypothyroidism, not increased, as the thyroid fails to produce adequate hormones. Low T3/T4 triggers high TSH, causing goiter. Increased T3/T4 would suggest hyperthyroidism, not hypothyroidism with goiter, making this an incorrect choice for supporting the clinical finding.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","D","E"]
Explanation
Choice A reason: Fibrosis and calcification occur in chronic pancreatitis, not acute pancreatitis, which is characterized by sudden inflammation. Alcohol-induced acute pancreatitis involves duct obstruction and enzyme autodigestion, causing pain. Fibrosis is a long-term consequence, not a primary driver of the acute pain in this client’s recent alcohol binge.
Choice B reason: Inflammation from an obstructed pancreatic duct is a key cause of acute pancreatitis pain. Alcohol can trigger duct blockage, leading to enzyme backup, inflammation, and tissue irritation. This process causes severe upper abdominal pain radiating to the back, aligning with the client’s symptoms and elevated amylase/lipase levels.
Choice C reason: Bleeding gastric ulcers cause epigastric pain but are unrelated to pancreatitis, which involves pancreatic inflammation. Elevated amylase and lipase confirm pancreatitis, not ulcer disease. Ulcers do not radiate pain to the back or stem from alcohol binges, making this incorrect for the client’s diagnosis.
Choice D reason: Spasms of the sphincter of Oddi, often alcohol-induced, block pancreatic secretions, causing enzyme backup and inflammation. This contributes to the severe pain of acute pancreatitis, as obstructed flow exacerbates tissue irritation. This process aligns with the client’s symptoms and laboratory findings, supporting its role in pain causation.
Choice E reason: Autodigestion by pancreatic enzymes, activated prematurely due to duct obstruction, causes tissue damage and severe pain in acute pancreatitis. Alcohol triggers this process, leading to inflammation and necrosis. This is a primary pathophysiological mechanism, explaining the client’s pain and elevated amylase/lipase, per evidence-based pancreatitis pathology.
Correct Answer is C
Explanation
Choice A reason: Tissue ischemia from vasospasm is associated with conditions like stroke, not multiple sclerosis (MS). MS involves immune-mediated demyelination of the central nervous system, causing exacerbations. Ischemia does not drive MS exacerbations, making this incorrect, as scarring of the myelin sheath is the hallmark pathological change.
Choice B reason: Destruction of norepinephrine receptors is unrelated to multiple sclerosis. MS exacerbations result from immune attacks on myelin, leading to scarred plaques that disrupt nerve conduction. Norepinephrine receptor issues may affect autonomic functions, but they are not part of MS’s pathophysiology, making this an incorrect choice.
Choice C reason: Multiple sclerosis exacerbations result from immune-mediated destruction and scarring (sclerosis) of the myelin sheath, forming plaques that impair nerve signal transmission. This causes neurological symptoms like weakness or sensory loss. Progressive demyelination and scarring are the core pathologic changes, aligning with MS’s clinical and histopathological features.
Choice D reason: Over-secretion of excitatory neurotransmitters may occur in epilepsy or neurotoxicity, not multiple sclerosis. MS exacerbations stem from myelin sheath scarring, disrupting nerve conduction, not neurotransmitter imbalances. This choice is incorrect, as it does not reflect the immune-driven demyelination central to MS’s pathological process.
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