A nurse is reviewing the arterial blood gas values for a client. The nurse should recognize that the values indicate which of the following acid-base imbalances?
The values are:
- pH: 7.56
- PaCO2: 55 mmHg
- HCO3: 33 mEq/L
Normal ranges:
- pH: 7.35-7.45
- PaCO2: 35-45 mmHg
- HCO3: 22-28 mEq/L
Metabolic Alkalosis
Metabolic Acidosis
Respiratory Alkalosis
Respiratory Acidosis
The Correct Answer is A
Choice A Reason:
Metabolic Alkalosis is correct. The pH of 7.56 is above the normal range (7.35-7.45), indicating alkalosis. The HCO3 level of 33 mEq/L is also above the normal range (22-28 mEq/L), which suggests a metabolic cause. In metabolic alkalosis, the body has an excess of bicarbonate or a loss of hydrogen ions.
Choice B Reason:
Metabolic Acidosis is incorrect. Metabolic acidosis is characterized by a low pH (below 7.35) and a low HCO3 level (below 22 mEq/L). The given values indicate alkalosis, not acidosis.
Choice C Reason:
Respiratory Alkalosis is incorrect. Respiratory alkalosis is characterized by a high pH (above 7.45) and a low PaCO2 (below 35 mmHg). In this case, the PaCO2 is elevated (55 mmHg), which does not align with respiratory alkalosis.
Choice D Reason:
Respiratory Acidosis is incorrect. Respiratory acidosis is characterized by a low pH (below 7.35) and a high PaCO2 (above 45 mmHg). While the PaCO2 is elevated, the pH indicates alkalosis, not acidosis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Applying compression stockings is a key prophylactic intervention to prevent complications of immobility, such as deep vein thrombosis (DVT) and venous thromboembolism (VTE). Compression stockings help improve blood circulation in the legs by applying graduated pressure, which reduces the risk of blood clots forming in the deep veins. This is particularly important for immobile patients who are at higher risk of developing DVT due to prolonged periods of inactivity.
Choice B reason: Raising all side rails is primarily a safety measure to prevent falls and does not directly address the complications of immobility. While it is important for patient safety, it does not have a significant impact on preventing issues like DVT, pressure ulcers, or muscle atrophy. Therefore, it is not considered a prophylactic intervention for immobility-related complications.
Choice C reason: Inserting a urinary catheter is not a prophylactic intervention for preventing complications of immobility. Catheters are used to manage urinary retention or incontinence but can increase the risk of urinary tract infections (UTIs) if not managed properly. They do not address the primary complications associated with immobility, such as DVT or pressure ulcers.
Choice D reason: Using friction-reducing devices is important for preventing pressure ulcers and skin injuries in immobile patients. These devices help minimize friction and shear forces on the skin, which can lead to pressure ulcers. While this is a valuable intervention, it is not as comprehensive as compression stockings in preventing a range of immobility-related complications.
Correct Answer is A
Explanation
Choice A Reason:
Cranial nerve V is the trigeminal nerve, which has both motor and sensory functions:Motor function: The nurse can assess this by asking the client to clench their teeth while palpating the masseter and temporalis muscles for strength.Sensory function: The nurse can assess this by lightly touching the client's face in different areas (forehead, cheeks, and jaw) with a cotton ball or sharp/dull object to check for sensation.
Choice B Reason:
Asking the client to identify scented aromas is a method used to assess cranial nerve I (Olfactory), not cranial nerve V. Cranial nerve V (Trigeminal) is assessed by testing facial sensation and motor functions such as chewing.

Choice C Reason:
Asking the client to read a Snellen chart is a method used to assess cranial nerve II (Optic), which is responsible for vision. This method does not assess cranial nerve V
Choice D Reason:
Asking the client to raise his eyebrows is a method used to assess cranial nerve VII (Facial), which controls facial expressions. This method is not used to assess cranial nerve V.
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