Mr. Casper, a 55-year-old patient with Gastroesophageal Reflux Disease (GERD), consumes about 16 Tums antacid tablets daily. An Arterial Blood Gas (ABG) test is conducted to evaluate his acid/base balance. The results are as follows: pH 7.46, CO2 46, PO2 86, HCO3 29, SaO2 97%. What is the interpretation of these results?

Uncompensated Respiratory Acidosis

Compensated Metabolic Acidosis

Partially Compensated Metabolic Alkalosis

Partially Compensated Respiratory Acidosis

Answer and Explanation

The Correct Answer is C

Choice A rationale:
Uncompensated Respiratory Acidosis is characterized by a low pH (less than 7.35) and a high pCO2 (greater than 45 mmHg). In this case, the pH is slightly elevated (7.46), making this option less likely.
While the pCO2 is elevated (46 mmHg), the body has begun to compensate, as evidenced by the elevated HCO3 (29 mEq/L). This partial compensation does not align with an uncompensated respiratory acidosis.
Choice B rationale:
Compensated Metabolic Acidosis would present with a normal pH (7.35-7.45) due to full compensation by the respiratory system. In this case, the pH is slightly elevated (7.46), which is not consistent with full compensation.
Additionally, the HCO3 is elevated (29 mEq/L), which is characteristic of metabolic alkalosis, not acidosis.
Choice C rationale:
Partially Compensated Metabolic Alkalosis is the most likely interpretation based on the ABG results. The pH is elevated (7.46), indicating alkalosis.
The HCO3 is also elevated (29 mEq/L), which is the primary cause of metabolic alkalosis.
The pCO2 is elevated (46 mmHg), which is a compensatory mechanism to try to normalize the pH. However, the compensation is not complete, as the pH is still slightly elevated.
This partial compensation is consistent with partially compensated metabolic alkalosis.
Choice D rationale:
Partially Compensated Respiratory Acidosis would present with a low pH (less than 7.35) and an elevated pCO2 (greater than 45 mmHg).
The HCO3 would also be elevated, but to a lesser degree than in metabolic alkalosis, as it's a secondary compensatory mechanism.
In this case, the pH is slightly elevated (7.46), making respiratory acidosis less likely.

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Correct Answer is C

Explanation

Step 1: Divide the prescribed dose (40 mg) by the concentration on hand (30 mg/mL).

Step 2: Perform the calculation: 40 mg ÷ 30 mg/mL = 1.3333 mL.

Step 3: Round the answer to the nearest tenth: 1.3333 mL rounds to 1.3 mL.

A. This medication may cause hair loss. B. This medication may cause a burst of energy. C. This medication should be taken on an empty stomach. D. The most serious adverse effect of this medication is retinal damage.

Correct Answer is D

Explanation

Rationale for Choice A:

Hydroxychloroquine does not typically cause hair loss as a significant side effect. While some anecdotal reports have suggested hair thinning as a possibility, it's not a well-established or common occurrence in clinical studies.

If a patient experiences hair loss while on hydroxychloroquine, it's essential to rule out other potential causes, such as underlying medical conditions, stress, or nutritional deficiencies.

It's also important to note that some individuals may have a personal predisposition to hair loss, and medications can sometimes trigger or exacerbate this issue.

Rationale for Choice B:

Hydroxychloroquine is not known to cause a burst of energy. In fact, some patients may experience fatigue or drowsiness as a side effect.

It's crucial to inform patients about potential side effects to manage expectations and promote adherence to treatment.

If a patient experiences unexpected energy changes while taking hydroxychloroquine, it's essential to report this to their healthcare provider for further evaluation.

Rationale for Choice C:

Hydroxychloroquine is generally recommended to be taken with food or milk to reduce potential gastrointestinal side effects such as nausea and vomiting.

Taking it on an empty stomach could increase the risk of these side effects, which could impact medication adherence and effectiveness.

Rationale for Choice D:

Retinal damage is the most serious adverse effect of hydroxychloroquine. It can lead to irreversible vision loss if not detected and managed early.

Patients taking hydroxychloroquine must undergo regular eye examinations to monitor for any signs of retinal toxicity.

Early detection and prompt discontinuation of the medication can often prevent permanent vision loss.

It's crucial for nurses to educate patients about this potential risk and emphasize the importance of regular eye exams.

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Naxlex Comprehensive Predictor Exams

You are instructed to administer 40 mg of methadone (Dolophine) subcutaneously for opioid detoxification. Given that you have a concentration of 30 mg/mL on hand, how much should you draw into the syringe?

Correct Answer is C

Explanation

The primary healthcare provider prescribes Hydroxychloroquine for a patient. What information should the nurse include when discussing this medication with the patient?

Correct Answer is D

Explanation

Rationale for Choice A:

Rationale for Choice B:

Rationale for Choice C:

Rationale for Choice D:

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