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?
pH 7.25, HCO3- 19mEq / L PaCO2 30 mm Hg
pH 7.30, HCO3-26 26mEq / L PaCO2 50 mm Hg
pH 7.50 0. HCO * 3 - 20mE /L, PaCO2 32 mm Hg
pH 7.55, HCO3- 30mEq / L PaCO2 31 mm Hg
The Correct Answer is A
In a client with chronic kidney disease (CKD), metabolic acidosis is a common acid-base disorder due to impaired excretion of acid and decreased bicarbonate reabsorption in the kidneys. The arterial blood gas values associated with metabolic acidosis in CKD are a low pH (acidemia), low bicarbonate (HCO3-), and normal or low partial pressure of carbon dioxide (PaCO2). Option A fits this pattern, with a pH of 7.25 (acidic), HCO3- of 19 mEq/L (low), and a PaCO2 of 30 mm Hg (within the normal to low range).
Option B shows a pH of 7.30 (acidic) but with a higher bicarbonate level of 26 mEq/L, which is not consistent with metabolic acidosis. The elevated bicarbonate level suggests metabolic alkalosis, which is not expected in a client with CKD.
Option C has a pH of 7.50 (alkaline) with an elevated bicarbonate level of 20 mEq/L and a low PaCO2 of 32 mm Hg. This set of values is indicative of metabolic alkalosis, which is not expected in a client with CKD.
Option D has a pH of 7.55 (alkaline) with an elevated bicarbonate level of 30 mEq/L and a low PaCO2 of 31 mm Hg. This set of values is indicative of metabolic alkalosis, which is not expected in a client with CKD.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
ST-segment elevation on an electrocardiogram (ECG) is a critical finding and should be reported rapidly to the health care provider. It is a hallmark ECG change seen in myocardial infarction (heart attack). When there is myocardial ischemia or injury (such as in a heart attack), the ST segment
elevates above the baseline in the affected leads of the ECG. This elevation indicates that there is an ongoing loss of oxygen and blood supply to a part of the heart muscle.
ST-segment elevation is a medical emergency because it suggests acute coronary syndrome (ACS), which can rapidly progress to a myocardial infarction if not promptly treated. Immediate intervention is needed to restore blood flow to the affected coronary artery and prevent further damage to the heart muscle.
The other options listed (A) First-degree atrioventricular block, (B) Inverted P wave, and (C) Sinus tachycardia, while significant in some situations, do not have the same urgency as ST-segment elevation in the context of chest pain. They may require medical attention, but they do not typically indicate an acute myocardial infarction or an immediate life-threatening condition. ST-segment elevation is a critical finding that requires rapid intervention to preserve heart muscle function and prevent complications.
Correct Answer is C
Explanation
Among the given options, the assessment data that indicate the need for immediate action by the nurse is a blood pressure of 103/54 mm Hg. This blood pressure reading indicates hypotension, which can be concerning for a post-angioplasty patient.
Angioplasty with stent placement is an invasive procedure, and patients may experience fluctuations in blood pressure during the immediate post-operative period. Hypotension after angioplasty can be a sign of inadequate cardiac output, which may be due to issues like bleeding, fluid loss, or heart dysfunction. Inadequate blood pressure can lead to decreased perfusion to vital organs, including the heart itself, and can be life-threatening.
Options A, B, and D are also important to address:
A) Heart rate 102 beats/min: A heart rate of 102 beats per minute may indicate tachycardia, which can be expected after a procedure like angioplasty. However, it is not as urgent of a concern as hypotension, and it may be a normal compensatory response to the body's stress.
B) Report of chest pain: Chest pain after angioplasty can be common, but it should be evaluated further to ensure it is not indicative of complications such as coronary artery spasms, clot formation, or restenosis of the treated artery. While this is an important issue to address, it does not take precedence over hypotension.
D) Pedal pulses 1+ bilaterally: This finding suggests that the peripheral pulses in the feet are weak, and it could be related to the patient's medical condition, medications, or positioning. While it requires attention, it is not an immediate threat to the patient's life compared to severe hypotension.
Therefore, the nurse should prioritize assessing and addressing the low blood pressure to prevent further complications and ensure the patient's stability. The nurse should promptly notify the healthcare provider and implement appropriate interventions, such as administering intravenous fluids, to increase blood pressure to a safe level.
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