A nurse is reviewing the arterial blood gas values of a client who has chronic kidney disease. Which of the following sets of values should the nurse expect?

Atropine is an anticholinergic medication that acts by blocking the effects of the parasympathetic nervous system on the heart, leading to an increase in heart rate (positive chronotropic effect) and conduction velocity (positive dromotropic effect). In patients with symptomatic type 1 second degree atrioventricular (AV) block (also known as Mobitz type 1 or Wenckebach), the electrical impulses between the atria and ventricles are delayed or blocked intermittently, resulting in a progressive lengthening of the PR interval until a ventricular beat is dropped.

When atropine is administered to a patient with symptomatic type 1 AV block, it can counteract the increased vagal tone that contributes to the block and help improve the conduction through the AV node. As a result, the heart rate is expected to increase, which is a positive response to the medication.

The other options listed (B) Decrease in premature ventricular contractions, (C) Increase in strength of peripheral pulses, and (D) Decrease in premature atrial contractions, are not directly related to the effect of atropine on type 1 AV block and are not typical findings associated with atropine administration in this context. The main goal of administering atropine in this situation is to increase the heart rate and improve the AV conduction to alleviate symptoms associated with the AV block.

The client presenting to the emergency department with a severe headache, nausea, and significantly elevated blood pressure (BP) of 238/118 mm Hg indicates a hypertensive crisis, which is a severe and potentially life-threatening condition. In such cases, the nurse's priority is to assess for potential triggers or exacerbating factors for the hypertensive crisis.

Option B, "Have there been recent stressful events in your life?" is the most relevant question to follow up on the findings. Stress is a known trigger for acute elevations in blood pressure, and severe stress can lead to a hypertensive crisis in individuals with a history of hypertension. Identifying recent stressful events may help the nurse understand potential contributing factors to the client's current condition and guide the management plan.

Option A, "Have you recently taken any antihistamines?" is not the most relevant question in this situation. Antihistamines are not typically associated with causing a hypertensive crisis. While certain medications and substances can interact with antihypertensive medications, causing an increase in BP, the severity of the client's symptoms and the extremely high BP reading suggest that a more immediate concern needs to be addressed.

Option C, "Have you consistently taken your medications?" is important for assessing medication adherence, but it may not directly explain the acute hypertensive crisis. The client's current symptoms and BP reading require more immediate investigation into potential triggers.

Option D, "Did you take any aspirin (or Tylenol) today?" is relevant to assess whether the client has recently taken any over-the-counter medications that could potentially interact with their prescribed antihypertensive drugs. However, it is not the most critical question to address the hypertensive crisis and the severity of the client's symptoms.

Given the severity of the client's presentation, the nurse should also promptly initiate appropriate interventions to address the hypertensive crisis, such as administering antihypertensive medications as prescribed, monitoring vital signs frequently, and notifying the healthcare provider for further evaluation and management.