An adult client with extreme fatigue, weight gain, cold intolerance, and bradycardia is diagnosed with hypothyroidism. Which laboratory findings is this client likely to exhibit?
Increased triiodothyronine (T3) and thyroxine (T4) and decreased thyroid stimulating hormone (TSH).
Increased triiodothyronine (T3) and thyroid stimulating hormone (TSH).
Decreased triiodothyronine (T3) and thyroxine (T4) and increased thyroid stimulating hormone (TSH).
Decreased thyroid stimulating hormone (TSH), triiodothyronine (T3), and thyroxine (T4).
The Correct Answer is C
Hypothyroidism is characterized by deficient production of thyroid hormones by the thyroid gland, leading to a decrease in circulating levels of triiodothyronine (T3) and thyroxine (T4). As a compensatory mechanism, the pituitary gland releases increased amounts of thyroid stimulating hormone (TSH) in an attempt to stimulate thyroid hormone production.
A) Increased triiodothyronine (T3) and thyroxine (T4) and decreased thyroid stimulating hormone (TSH):
This pattern of laboratory findings is not consistent with hypothyroidism. Hypothyroidism is characterized by decreased levels of T3 and T4 due to impaired thyroid function, leading to increased TSH levels as a compensatory response. Therefore, this option is incorrect.
B) Increased triiodothyronine (T3) and thyroid stimulating hormone (TSH):
While TSH levels are typically increased in hypothyroidism, T3 levels are usually decreased. Therefore, the combination of increased T3 and TSH is not indicative of hypothyroidism. This option is incorrect.
C) Decreased triiodothyronine (T3) and thyroxine (T4) and increased thyroid stimulating hormone (TSH):
Correct. In hypothyroidism, there is a decrease in both T3 and T4 levels due to impaired thyroid function. As a compensatory mechanism, the pituitary gland releases increased amounts of TSH to stimulate the thyroid gland. Therefore, this pattern of laboratory findings is consistent with hypothyroidism.
D) Decreased thyroid stimulating hormone (TSH), triiodothyronine (T3), and thyroxine (T4):
Decreased levels of TSH, T3, and T4 are not indicative of hypothyroidism. Hypothyroidism is characterized by elevated TSH levels and decreased T3 and T4 levels. Therefore, this option is incorrect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) Elevation in blood pressure:
While elevation in blood pressure could potentially cause discomfort at the arterial line insertion site, it is not the most likely physiological effect to induce sudden pain in this scenario. Blood pressure elevation would typically cause generalized symptoms rather than localized pain at the insertion site.
B) Vasospasm at insertion site:
Correct. Vasospasm refers to the sudden constriction of blood vessels, leading to reduced blood flow. It can occur in response to arterial puncture or manipulation during arterial line insertion, resulting in sudden pain at the insertion site.
C) Clot in the arterial catheter:
A clot in the arterial catheter could potentially cause obstruction and affect blood flow, but it is less likely to induce sudden pain at the insertion site unless there is associated ischemia or tissue damage.
D) Air lock in the transducer:
An air lock in the transducer could disrupt pressure monitoring but is not typically associated with sudden pain at the insertion site. It may lead to inaccurate pressure readings rather than localized pain.
Correct Answer is B
Explanation
Amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig's disease, is a progressive neurodegenerative disorder affecting motor neurons in the brain and spinal cord. Understanding the pathophysiological process of ALS is crucial for providing accurate information about the disease prognosis to the client. Here's why option B is the correct choice:
A) It occurs as a complication of a spinal cord injury:
This statement is incorrect. ALS is not a complication of a spinal cord injury. While both conditions involve motor neuron dysfunction, they have different etiologies and pathophysiological processes. ALS is characterized by the degeneration of motor neurons in the brain and spinal cord, leading to muscle weakness and atrophy, whereas spinal cord injury results from trauma to the spinal cord.
B) Muscle weakness is progressive, degenerative, and fatal:
Correct. ALS is characterized by progressive degeneration of motor neurons, leading to muscle weakness, atrophy, and eventual paralysis. The disease is relentless and fatal, typically within 2 to 5 years of diagnosis, although survival can vary widely among individuals. As motor neurons degenerate, voluntary muscle control is lost, eventually affecting the ability to speak, swallow, breathe, and move. Respiratory failure is the most common cause of death in ALS patients.
C) Mental status changes occur late in the disease:
While cognitive and behavioral changes can occur in some individuals with ALS, particularly in the later stages of the disease, they are not universal. ALS primarily affects motor neurons, leading to progressive muscle weakness and paralysis. However, some individuals may experience frontotemporal dementia (FTD), a type of cognitive impairment characterized by changes in behavior, personality, and language.
D) Autonomic nervous system and sensory changes occur:
ALS primarily affects motor neurons rather than sensory neurons or the autonomic nervous system. Sensory symptoms such as numbness, tingling, or loss of sensation are not typical features of ALS. Autonomic dysfunction, including changes in heart rate, blood pressure, or bowel and bladder function, is not a prominent feature of ALS.
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