A Three- Year- Old Child Presents with Repeated Staphylococcal Skin

question 29

Multiple Choice

A three- year- old child presents with repeated staphylococcal skin infections that take a very long time to resolve. The total white blood cell count is within normal limits and counts of all white blood cell types are within normal limits. All immunoglobulin and complement levels are within normal limits. A nitroblue tetrazolium (NBT) test is performed, and at the end of incubation, all neutrophils appear yellow. What is the best interpretation of these data?

• A)The child may have chronic granulomatous disease (CGD).
• B)All tests done to date are within normal limits and additional testing should be done.
• C)The child may have cyclic neutropenia.
• D)The child may have leukocyte adhesion defect (LAD).
• E)The child may have Job's syndrome.

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Definitions:

Frequency Sounds

The pitch of a sound determined by the rate at which sound waves vibrate, measured in hertz (Hz).

Radio Speaker

An individual who delivers audio content over radio broadcasts, often involved in discussions or providing information to listeners.

High-Frequency

Refers to occurrences or operations that happen at a rapid pace or over short periods, often used in contexts like high-frequency trading in finance.

Basilar Membrane

A key structure in the cochlea of the inner ear that plays a crucial role in the process of hearing by vibrating in response to sound waves.