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
The client taking isosorbide dinitrate/hydralazine (BiDil) and experiencing a headache should be assessed first. Isosorbide dinitrate/hydralazine is a medication combination used to treat heart failure, particularly in African American patients. However, one of the side effects of hydralazine is headaches.
Headache in a client taking this medication may indicate increased blood pressure as a compensatory response to vasodilation. If not addressed promptly, it may lead to worsening heart failure or other complications. Therefore, it is essential to assess the client's blood pressure, signs of worsening heart failure, and evaluate the severity and duration of the headache.
The other options may also require attention:
A) A client taking digoxin with a potassium level of 3.1 mEq/L needs assessment, as hypokalemia can increase the risk of digoxin toxicity. However, the headache in the BiDil client takes priority due to the potential complications related to increased blood pressure.
B) A client taking captopril and experiencing a frequent nonproductive cough may indicate a side effect of the medication. While it should be assessed, it is not as immediately concerning as the headache in the BiDil client.
C) A client taking carvedilol (Coreg) with a heart rate of 58 is within an acceptable range, especially if the client is tolerating it well without symptoms. It may not require immediate assessment unless there are other concerning symptoms.
Correct Answer is C
Explanation
The statement "I will call the clinic if my weight goes up 3 pounds in a week" indicates that the teaching about heart failure was effective. Monitoring weight is an essential self-care measure for patients with heart failure to manage fluid retention effectively. A sudden weight gain of 2-3 pounds in a week can indicate fluid retention and worsening heart failure. It is crucial for the patient to report such weight changes promptly to the healthcare provider or clinic to adjust medication doses or treatment plans as needed.
The other statements are incorrect:
A) "I will use the nitroglycerin patch whenever I have chest pain." Nitroglycerin is not typically used to manage heart failure. It is used for angina, which is chest pain caused by reduced blood flow to the heart muscle due to narrowed coronary arteries.
B) "I will take furosemide (Lasix) every day just before bedtime." While furosemide is a diuretic commonly prescribed for heart failure to reduce fluid retention, it is not usually taken just before bedtime. Taking furosemide in the evening may lead to frequent nighttime urination and disrupt sleep.
D) "I will use an additional pillow if I am short of breath at night." Using an extra pillow may provide temporary relief for positional dyspnea (shortness of breath when lying flat) but is not an appropriate long-term strategy for managing heart failure. Elevated pillows may not effectively improve breathing and can lead to neck strain. Instead, patients with heart failure should be encouraged to sleep with their head slightly elevated on a regular basis, using a wedge pillow or adjustable bed if needed. Managing fluid retention and adhering to prescribed medications are essential for improving heart failure symptoms and preventing complications.
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