What is considered the most definitive diagnostic test for leukemia?

Chest X-ray

Urinalysis

Complete blood count (CBC)

Bone marrow biopsy and aspiration

Answer and Explanation

The Correct Answer is D

A. Chest X-ray is not a definitive diagnostic test for leukemia. It is more commonly used to evaluate for signs of infection, lung abnormalities, or metastasis in cancer patients, but it does not confirm leukemia.

B. Urinalysis is not the definitive test for leukemia. While it may help assess kidney function or rule out other conditions, it is not used to diagnose leukemia.

C. Complete blood count (CBC) is useful for detecting abnormalities that may suggest leukemia, such as abnormal white blood cell counts, but it alone cannot definitively diagnose leukemia. It is typically part of the initial evaluation.

D. Bone marrow biopsy and aspiration is the definitive diagnostic test for leukemia. This test allows for direct examination of the bone marrow to confirm the presence of leukemia cells, making it the gold standard for diagnosis.

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Correct Answer is C

Explanation

A. Tonic-clonic seizure. Tonic-clonic seizures involve both muscle stiffness (tonic phase) and jerking movements (clonic phase), but they are not characterized by a sudden loss of muscle tone.

B. Myoclonic seizure. Myoclonic seizures involve brief, sudden jerks or twitches of a muscle or group of muscles, not the sudden loss of muscle tone.

C. Atonic seizure. Atonic seizures, also known as "drop attacks," are characterized by a sudden loss of muscle tone, which causes the person to collapse or fall to the ground. This is the correct description of the type of seizure being asked about.

D. Absence seizure. Absence seizures involve brief episodes of staring and loss of awareness but do not cause loss of muscle tone or collapsing.

A. Glasgow Coma Scale (GCS) assessment B. Cerebrospinal fluid (CSF) analysis C. RBC count D. Magnetic resonance imaging (MRI)

Correct Answer is B

Explanation

A. Glasgow Coma Scale (GCS) assessment is used to assess the level of consciousness in patients with head trauma or neurological conditions, but it is not the diagnostic test for suspected meningitis.

B. Cerebrospinal fluid (CSF) analysis is the definitive test for diagnosing meningitis. A lumbar puncture is performed to obtain a sample of CSF, which is then analyzed for signs of infection, such as increased white blood cells, proteins, and low glucose levels.

C. RBC count is useful for assessing anemia and other hematological conditions, but it is not specific to diagnosing meningitis.

D. Magnetic resonance imaging (MRI) can be used to assess brain structure, but CSF analysis remains the primary diagnostic tool for confirming meningitis based on the clinical signs of fever, headache, stiff neck, and rash.

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What is considered the most definitive diagnostic test for leukemia?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which type of seizure is characterized by a sudden loss of muscle tone, leading to the person collapsing or falling down?

Correct Answer is C

Explanation

A nurse is caring for a child who has increasing manifestations of fever, headache, stiff neck, and rash. Which of the following diagnostic tests should the nurse expect the health care provider to order?

Correct Answer is B

Explanation

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