A nurse is caring for a client who is experiencing anxiety as well as numbness and tingling of the lips and fingers. The client's ABGs are pH 7.48, PCO2 30 mm Hg, HCO3 24 mEq/L, PaO2 85 mm Hg. Which of the following acid-base imbalances should the nurse identify that the client is experiencing?
Respiratory alkalosis.
Respiratory acidosis.
Metabolic alkalosis.
Metabolic acidosis.
The Correct Answer is A
Choice A rationale:
The client's ABG values show a pH of 7.48, PCO2 of 30 mm Hg, HCO3 of 24 mEq/L, and PaO2 of 85 mm Hg. The elevated pH and decreased PCO2 (respiratory component) suggest respiratory alkalosis. Respiratory alkalosis occurs when there is excessive ventilation, leading to a decrease in carbon dioxide levels (hypocapnia) and subsequent alkalosis.
Choice B rationale:
Respiratory acidosis is characterized by an elevated PCO2 and decreased pH. In this case, the client's PCO2 is decreased, indicating respiratory alkalosis rather than respiratory acidosis.
Choice C rationale:
Metabolic alkalosis is characterized by an elevated HCO3 (bicarbonate) level and an increased pH. The client's HCO3 level is within the normal range, making metabolic alkalosis an incorrect identification.
Choice D rationale:
Metabolic acidosis is characterized by a decreased HCO3 level and a decreased pH. The client's HCO3 level is within the normal range, ruling out metabolic acidosis as the acid-base imbalance in this case.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Answer: A. Diplopia.
Rationale:
A) Diplopia: Diplopia, or double vision, is a common symptom in multiple sclerosis (MS) due to demyelination of nerves in the brainstem, affecting eye movement coordination. This visual disturbance is frequently seen in MS clients and may worsen during flare-ups.
B) Masklike expression: A masklike expression is more commonly associated with Parkinson’s disease rather than multiple sclerosis. This characteristic facial appearance is due to muscle rigidity, which is not typically a manifestation of MS.
C) Twitching of the face: Facial twitching, or fasciculations, is not typically a primary symptom of multiple sclerosis. While muscle weakness and spasticity are common in MS, twitching is more commonly seen in conditions such as amyotrophic lateral sclerosis (ALS).
D) Agitation: Agitation is not a primary symptom of MS. While MS can lead to cognitive changes or mood disturbances, such as depression, severe agitation is more commonly linked with other neurological or psychiatric conditions.
Correct Answer is B
Explanation
Choice A rationale:
An INR (International Normalized Ratio) of 0.8 is within the normal range for someone not on anticoagulation therapy. The aPTT (activated partial thromboplastin time) of 85 seconds is prolonged, but it is not a reason to withhold heparin in itself. Therefore, the nurse should not withhold the medication for these values.
Choice B rationale:
An INR of 2 indicates the client's blood is taking twice as long to clot compared to the average, which can increase the risk of bleeding. The aPTT of 60 seconds is within the normal range. However, the elevated INR suggests the client might be overly anticoagulated, so the nurse should withhold the medication and notify the provider.
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