A 73-year-old patient with diabetes was admitted for below the knee amputation of his right leg. Removal of his right leg is an example of which type of surgery?

A. “All preoperative patients get this medication.” This statement is too broad and not entirely accurate. While many preoperative patients do receive famotidine (Pepcid), it’s not a standard for all. Medications are prescribed based on individual patient needs and medical history.

B. “The physician prescribed this medication for you.” While this is technically true, it doesn’t provide the patient with an understanding of why the medication is necessary. As a nurse, part of your role is to educate patients about their medications.

C. “It helps prevent ulcers from the stress of the surgery.” This is the correct answer. Famotidine (Pepcid) is given to decrease the amount of acid produced in the stomach, which can help prevent stress ulcers that can occur due to the physical stress of surgery.

D. “Since you don’t have ulcers, I will have to ask.” This statement suggests uncertainty and a lack of knowledge about the medication’s purpose. It’s important for healthcare professionals to understand the medications they administer and be able to explain them to patients.

A. Metabolic acidosis:

Metabolic acidosis is characterized by a low pH (<7.35) and a low bicarbonate level (<22 mEq/L) due to an excess of acids in the body or a loss of bicarbonate. However, in the given ABG values, the pH is low (7.22), but the bicarbonate level is elevated (28 mEq/L), which does not align with metabolic acidosis. Therefore, metabolic acidosis is not the correct interpretation in this case.

B. Respiratory acidosis:

Respiratory acidosis occurs when there is inadequate removal of carbon dioxide (CO2) by the lungs, leading to an accumulation of CO2 in the blood and a decrease in pH. In the ABG values provided, the pH is low (7.22), and the PaCO2 is elevated (68 mm Hg), indicating respiratory acidosis as the primary disturbance. This interpretation is supported by the elevated PaCO2 and the low pH, making it the correct choice based on the given data.

C. Respiratory alkalosis:

Respiratory alkalosis results from hyperventilation, leading to excessive elimination of CO2 and a decrease in PaCO2 levels. However, in the ABG values presented, the PaCO2 is elevated (68 mm Hg), which contradicts the expected decrease seen in respiratory alkalosis. Therefore, respiratory alkalosis is not the correct interpretation of the ABG values in this case.

D. Metabolic alkalosis:

Metabolic alkalosis is characterized by a high pH (>7.45) and a high bicarbonate level (>26 mEq/L) due to excessive loss of acids or an increase in bicarbonate levels. However, in the ABG values provided, the pH is low (7.22), and the bicarbonate level is elevated (28 mEq/L), which is not consistent with metabolic alkalosis. Therefore, metabolic alkalosis is not the correct interpretation based on the given data.