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A 1-Week-Old Newborn Is Seen for Abnormal Thyroid Function Tests

question 171

Multiple Choice

A 1-week-old newborn is seen for abnormal thyroid function tests that were performed as part of routine screening. Serum thyroxine (T4) was low and serum TSH was normal. The patient was born by spontaneous vaginal delivery at 40 weeks of gestation to a 28-year-old primigravida. During the pregnancy, the mother took acetaminophen intermittently for low back pain. Examination of the newborn shows no abnormal findings. Repeat thyroid function test results are as follows: Which of the following is the most likely cause of the patient's abnormal thyroid function tests?

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Elderly

Pertaining to individuals in their later years of life, often considered to be those aged 65 and above, marked by various cognitive and physical changes.

Antipsychotic Medications

Drugs used to manage psychosis, including symptoms such as delusions and hallucinations, often found in schizophrenia and bipolar disorder.

Psychotic Symptoms

Manifestations of psychosis, including hallucinations (seeing or hearing things that aren’t there) and delusions (false beliefs), often indicating a severe mental disorder.

Rate

A measure used to quantify the frequency, occurrence, or speed of an event or condition.