Always draw up the regular insulin into the syringe first.

Choice A rationale

While maintaining patient confidentiality is crucial, it does not address the immediate medical needs of the patient with chronic renal failure. The primary concern should be addressing the health implications of their condition and ensuring proper care coordination.

Choice B rationale

Administering medications ordered immediately is essential, but it is not the first priority without knowing the patient's current status and medical history. The nurse needs to ensure that the medications prescribed are appropriate for a patient with chronic renal failure.

Choice C rationale

Providing teaching about chronic renal failure is important for long-term management but is not the first priority upon admission. Immediate medical needs and communication with the care team take precedence in this acute care setting.

Choice D rationale

Calling the admitting physician immediately is the first priority. The primary care provider needs to be aware of the patient's diagnosis of chronic renal failure to adjust treatment plans accordingly. Immediate communication ensures that all healthcare professionals are on the same page regarding the patient's care. .

Choice A rationale

Serotonin does not compete with anticholinergic agents at muscarinic acetylcholine receptor sites; anticholinergics target these receptors to inhibit the parasympathetic nervous system.

Choice B rationale

Anticholinergics do not increase norepinephrine at the neuromuscular junction.

Choice C rationale

Nicotinic receptors are primarily affected by different classes of drugs, such as neuromuscular blockers.

Choice D rationale

Anticholinergics inhibit the actions of the parasympathetic nervous system by blocking muscarinic receptors, reducing bodily functions like saliva production, digestion, and urination.