A client with diabetic ketoacidosis (DKA) has Kussmaul respirations.
What is the primary purpose of this breathing pattern?

Choice A rationale

Administering 2 tablets is the correct action because the ordered dose is 500 mg and each available tablet contains 250 mg. By providing two of these tablets, the nurse delivers the exact amount prescribed. This calculation is a basic nursing competency used to ensure medication safety. Giving the correct number of tablets prevents underdosing, which would result in subtherapeutic levels of the medication, and overdosing, which could lead to toxicity or adverse reactions for the patient.

Choice B rationale

Administering 1 tablet would only provide 250 mg of the medication, which is exactly half of the 500 mg dose that was ordered by the healthcare provider. Providing only one tablet would result in a medication error categorized as underdosing. This would fail to meet the therapeutic needs of the patient and could lead to a worsening of the condition being treated, as the drug concentration in the bloodstream would not reach the necessary level for effectiveness.

Choice C rationale

Administering 1.5 tablets would provide a total dose of 375 mg, as 250 mg multiplied by 1.5 equals 375 mg. This amount is still 125 mg short of the required 500 mg dose. While closer than a single tablet, it remains an incorrect dosage that would not fulfill the prescriber's order. Nursing practice requires precise calculation to ensure that the patient receives the specific amount of active ingredient necessary to produce the desired physiological response without error.

Choice D rationale

Administering 0.5 tablets would only provide 125 mg of the medication, which is significantly less than the 500 mg dose required for the patient. Such a small amount would be entirely insufficient for treating the patient's condition. In clinical practice, the nurse must always verify the dose on hand against the dose ordered. Using a half tablet in this scenario would be a clear mathematical error and a violation of the rights of medication administration.

Choice A rationale

Transmission refers to the initial mechanism by which an infectious agent is spread from a reservoir or source to a susceptible host. This can occur through direct contact, respiratory droplets, or contaminated surfaces. While transmission is the necessary first step for an infection to occur, it describes the movement of the pathogen through the environment rather than the specific biological event of the microorganism settling and multiplying on the host's mucosal surfaces without symptoms.

Choice B rationale

Colonization occurs when a microorganism establishes a presence on a host's body surface, such as the skin or mucous membranes, and begins to replicate. During this stage, there is no evidence of tissue invasion, cellular damage, or a systemic immune response that produces clinical symptoms. The individual may become a carrier of the organism, potentially spreading it to others, even though they do not currently manifest the signs of an active infectious disease.

Choice C rationale

Invasion is the stage where the microorganism breaks through the host's protective barriers, such as the skin or mucosal lining, and enters the underlying tissues or the bloodstream. This process often involves the release of enzymes or toxins that damage host cells. Unlike colonization, invasion implies that the pathogen has moved beyond mere surface presence and is actively penetrating the host's internal environment, which usually triggers an inflammatory response and clinical symptoms.

Choice D rationale

Dissemination describes the spread of the microorganism from the initial site of infection to other parts of the body through the blood or lymphatic system. This can lead to systemic infections or the involvement of distant organs. Dissemination represents a more advanced and serious progression of the infectious process compared to colonization, as the pathogen is no longer localized to a surface but is migrating through the host's internal systems.