A client who has a blood glucose level of 800 mg/dL is to receive insulin intravenously. Which form of insulin is safe for intravenous administration?

These are natural respiratory defense mechanisms that help defend against infection.

Choice A is correct because cilia lining the respiratory tract sweep debris upward in mucus to be swallowed.

This prevents pathogens and particles from reaching the lungs.

Choice B is wrong because the respiratory tract does not cool and dry the air being inhaled. In fact, the respiratory tract warms and humidifies the air to facilitate gas exchange.

Choice C is correct because cells in the respiratory tract secrete lysozymes that can destroy certain bacteria.

Lysozymes are enzymes that break down the cell walls of bacteria.

Choice D is correct because macrophages engulf and destroy bacteria found in the alveoli. Macrophages are a type of white blood cell that act as scavengers of foreign invaders.

Choice E is wrong because high concentrations of oxygen and carbon dioxide do not aid the defense mechanisms.

On the contrary, high levels of these gases can impair gas exchange and cause acid-base imbalance.

“I can’t promise that the information won’t be shared if your health or safety is involved.” This response by the nurse would be appropriate because it respects the client’s confidentiality while also acknowledging its limits of it. The nurse has a duty to report any information that may indicate a risk of harm to the client or others.

Choice A is wrong because it dismisses the client’s need to share something and implies that the nurse is not interested or trustworthy.

Choice B is wrong because it gives a false assurance of confidentiality and may lead to ethical dilemmas if the client reveals something that requires reporting.

Choice C is wrong because it does not address the issue of confidentiality and may give the impression that the nurse is trying to avoid the conversation.