Health personnel should wash their hands with soap and water at the beginning of the shift for:

Choice A rationale

Breaking needles in half before disposal is dangerous and not recommended. It increases the risk of needlestick injuries and exposure to bloodborne pathogens.

Choice B rationale

Not recapping needles, especially after drawing arterial blood gas (ABG) specimens, is a recommended practice to prevent needlestick injuries. This reduces the risk of accidental puncture during the recapping process.

Choice C rationale

Recapping needles and placing them in a wastebasket is unsafe and increases the risk of needlestick injuries and improper disposal of medical waste, which can expose others to bloodborne pathogens.

Choice D rationale

Placing uncapped needles directly into a puncture-proof container after use is a safe practice, but the question specifically asks about preventing needlestick injuries during the handling of ABG specimens, where recapping should be avoided.

Choice A rationale

Scabies is a parasitic skin infestation caused by mites. It spreads through direct skin-to-skin contact and does not require an N95 respirator. Standard precautions and contact isolation are usually sufficient.

Choice B rationale

Tuberculosis is an airborne infectious disease. An N95 respirator mask is necessary to protect against inhaling airborne droplets that may contain the bacteria, especially in healthcare settings.

Choice C rationale

Scarlet fever is a bacterial infection caused by group A Streptococcus. It spreads through respiratory droplets, but standard surgical masks are usually adequate. An N95 respirator is not required.

Choice D rationale

Mycoplasmal pneumonia is a type of bacterial pneumonia transmitted through respiratory droplets. While it can be contagious, an N95 respirator is generally not necessary unless in specific aerosol-generating procedures. Standard precautions are usually sufficient. .