A nurse is reviewing laboratory results for a client who has metabolic alkalosis. Which of the following blood gas values should the nurse expect?
pH 7.36 (7.35 to 7.45), PaCO2 38 mm Hg (35 to 45 mmHg) HCO3 25 mEq/L (22 to 26 mEq/L)
pH 7.48 (7.35 to 7.45), PaCO, 32 mm Hg (35 to 45 mm Hg). HCO3 24 mEq/L (22 to 26 mE q/L)
pH 7.46 (7.35 to 7.45). PaCO2 36 mm Hg (35 to 45 mm Hg). HCO3 29 mEq/L (22 to 26 mEq/L)
pH 7.26 (7.35 to 7.45). PaCO, 35 mm Hg (35 to 45 mm Hg). HCO3 18 mEq/L (22 to 26 mEq/L)
The Correct Answer is C
A) pH 7.36 (7.35 to 7.45), PaCO2 38 mm Hg (35 to 45 mmHg), HCO3 25 mEq/L (22 to 26 mEq/L): This is a normal set of arterial blood gas (ABG) values, with a pH within normal range, a normal PaCO2, and a normal HCO3. It does not suggest metabolic alkalosis.
B) pH 7.48 (7.35 to 7.45), PaCO2 32 mm Hg (35 to 45 mm Hg), HCO3 24 mEq/L (22 to 26 mEq/L): Although the pH is elevated, indicating alkalosis, the PaCO2 is slightly low, and the bicarbonate (HCO3) is within the normal range. This set of values does not indicate metabolic alkalosis, but could indicate respiratory alkalosis or compensated alkalosis.
C) pH 7.46 (7.35 to 7.45), PaCO2 36 mm Hg (35 to 45 mm Hg), HCO3 29 mEq/L (22 to 26 mEq/L): This is consistent with metabolic alkalosis. The elevated pH (alkalosis) combined with an increased bicarbonate level (HCO3 > 26 mEq/L) and a normal PaCO2 suggests metabolic alkalosis, as the kidneys retain bicarbonate to compensate for the condition.
D) pH 7.26 (7.35 to 7.45), PaCO2 35 mm Hg (35 to 45 mm Hg), HCO3 18 mEq/L (22 to 26 mEq/L): This set of values indicates acidosis, not alkalosis. The pH is low, indicating acidosis, and the bicarbonate (HCO3) is also low, which suggests metabolic acidosis. The PaCO2 is normal, which further supports a metabolic origin of the acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) Position the client on their left side.
This is the most appropriate action. The client's symptoms (dizziness, racing heart, and paleness) are consistent with supine hypotensive syndrome, which occurs when the pregnant uterus compresses the inferior vena cava while lying on the back, reducing venous return to the heart. Positioning the client on their left side relieves the pressure on the vena cava, restores normal blood flow, and alleviates these symptoms. This is a common intervention during pregnancy to prevent such complications.
B) Check the client's temperature.
While checking the client’s temperature may be necessary if an infection is suspected, the symptoms described are more indicative of supine hypotensive syndrome rather than an infection. Therefore, checking the temperature is not the priority action in this scenario.
C) Instruct the client to take a brisk walk.
Encouraging the client to take a brisk walk is not an appropriate response to the symptoms described. In fact, moving or exerting oneself might worsen dizziness or lead to further complications. The priority is to relieve the pressure on the vena cava by changing the client's position, not by physical activity.
D) Provide the client with a glass of orange juice.
Although providing orange juice might help if the client is experiencing hypoglycemia, there is no indication from the symptoms described that the client has low blood sugar. The client's symptoms are more likely due to positional changes that affect circulation during pregnancy, and the best immediate action is to change the client's position rather than offering food or drink.
Correct Answer is C
Explanation
A) "You should lay down for 1 hour following a meal.":
Laying down after eating can exacerbate GERD symptoms by promoting acid reflux. The nurse should advise the client to remain upright for at least 30 minutes after eating to prevent reflux. Lying down increases the likelihood of gastric contents moving back into the esophagus.
B) "You should only drink 2 cups of coffee per day.":
Caffeine is a known trigger for GERD and can relax the lower esophageal sphincter, increasing the risk of acid reflux. The nurse should suggest limiting or avoiding coffee altogether, rather than recommending a specific quantity, as even small amounts may aggravate symptoms.
C) "You should elevate the head of the bed while sleeping.":
Elevating the head of the bed is a common and effective strategy for managing GERD. This helps prevent acid reflux during sleep by utilizing gravity to keep stomach contents from flowing back into the esophagus. A common recommendation is to elevate the head by 6-8 inches using blocks or a wedge pillow.
D) "You should eat three large meals and two snacks per day.":
Eating large meals can increase intra-abdominal pressure and promote acid reflux in clients with GERD. The nurse should recommend smaller, more frequent meals to reduce the risk of reflux and improve symptom control.
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