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A patient's blood gases show a pH of 7.53 and bicarbonate level of 36 mEq/L. The nurse realizes that the patient is demonstrating which acid-base disorder?

Respiratory acidosis.

Metabolic alkalosis.

Respiratory alkalosis.

Metabolic acidosis.

Answer and Explanation

The Correct Answer is B

Metabolic alkalosis.

Choice A rationale:

The given blood gas results show a pH of 7.53, which is alkaline (above the normal range of

7.35 to 7.45), and a high bicarbonate level of 36 mEq/L (normal range is 22 to 26 mEq/L). This combination indicates metabolic alkalosis, a condition where there is an excessive accumulation of bicarbonate in the blood, leading to increased pH.

Choice B rationale:

Metabolic alkalosis is characterized by increased blood bicarbonate levels, which can occur due to conditions like vomiting, diuretic use, or excessive ingestion of bicarbonate-containing substances. It results in symptoms such as muscle twitching, tetany, and respiratory depression.

Choice C rationale:

Respiratory alkalosis is characterized by an elevated blood pH and low carbon dioxide levels (hypocapnia). However, the bicarbonate level is not directly related to respiratory alkalosis, making this choice incorrect based on the given information.

Choice D rationale:

Metabolic acidosis is characterized by a decreased blood pH and low bicarbonate levels. The presented blood gas results show an alkaline pH and high bicarbonate, making this choice incorrect.

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Correct Answer is B

Explanation

Respiratory acidosis.

Choice A rationale:

Metabolic alkalosis occurs when there is an increase in pH and bicarbonate (HCO₃⁻) levels, which is not the case here. The pH value in this scenario is 7.22, indicating acidosis.

Choice B rationale:

Respiratory acidosis results from the retention of carbon dioxide (PaCO₂) in the blood, leading to a decrease in pH. In this case, the pH is low (7.22), and the PacO₂ is elevated (68 mm Hg), supporting the diagnosis of respiratory acidosis.

Choice C rationale:

Metabolic acidosis is characterized by a decrease in pH and bicarbonate levels, along with a possible negative base excess. However, in this scenario, the base excess is -2, which does not indicate metabolic acidosis.

Choice D rationale:

Respiratory alkalosis occurs when there is a decrease in PaCO₂, leading to an increase in blood pH. The ABG values provided (pH 7.22, PacO₂ 68 mm Hg) are not consistent with respiratory alkalosis.

A. Drug toxicity. B. Other electrolyte disturbances. C. Hypertension. D. Visual disturbances.

Correct Answer is B

Explanation

Other electrolyte disturbances.

Choice A rationale:

Drug toxicity is not directly related to hypocalcemia. The main concern in hypocalcemia is the calcium imbalance itself, not drug toxicity.

Choice B rationale:

Other electrolyte disturbances should be assessed because imbalances in other electrolytes, such as potassium and magnesium, are often associated with hypocalcemia. Electrolyte imbalances can interact and exacerbate each other, potentially leading to more severe complications.

Choice C rationale:

Hypertension is not a typical assessment finding in hypocalcemia. Hypertension is not directly related to calcium levels but may have other underlying causes.

Choice D rationale:

Visual disturbances are not commonly associated with hypocalcemia. Hypocalcemia is more likely to present with neuromuscular and cardiovascular symptoms, rather than visual disturbances.

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A patient's blood gases show a pH of 7.53 and bicarbonate level of 36 mEq/L. The nurse realizes that the patient is demonstrating which acid-base disorder?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A client is admitted to the emergency room with a respiratory rate of 7/min. Arterial blood gases (ABG) reveal the following values. Which of the following is an appropriate analysis of the ABGs? pH 7.22, PacO₂ 68 mm Hg, Base excess -2, PaO₂ 78 mm Hg, Saturation 80%, Bicarbonate 26 mEq/L.

Correct Answer is B

Explanation

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Correct Answer is B

Explanation

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