Nursing Elites

1. What do the following ABG values indicate: pH 7.38, PO2 78 mmHg, PCO2 36 mmHg, and HCO3 24 mEq/L?

• A. metabolic alkalosis
• B. homeostasis
• C. respiratory acidosis
• D. respiratory alkalosis

Correct answer: B

Rationale: The correct answer is 'homeostasis.' These ABG values fall within the normal range, indicating a state of balance and homeostasis. The pH is within the normal range (7.35-7.45), the PCO2 is normal (35-45 mmHg), and the HCO3 level is also normal (22-26 mEq/L). Choice A, 'metabolic alkalosis,' is incorrect because the pH, PCO2, and HCO3 levels are not indicative of metabolic alkalosis. Choice C, 'respiratory acidosis,' is incorrect as the pH and PCO2 values are not elevated. Choice D, 'respiratory alkalosis,' is incorrect as the pH and PCO2 levels are not decreased. Therefore, the ABG values provided do not correspond to any acid-base disturbance, confirming that the patient is in a state of homeostasis.

2. A client is admitted for observation following an unrestrained motor vehicle accident. A bystander stated that he lost consciousness for 1-2 minutes. On admission, the client's Glasgow Coma Scale (GCS) was 14. The GCS is now 12. The nurse should:

• A. Re-assess in 15 minutes
• B. Stimulate the client with a sternal rub
• C. Administer Tylenol with codeine for a headache
• D. Notify the physician

Correct answer: D

Rationale: A decrease in the Glasgow Coma Scale (GCS) score from 14 to 12 indicates a significant neurological change in the client's condition. This change can be indicative of a deterioration in the client's neurological status, possibly due to intracranial bleeding or swelling. It is crucial for the nurse to notify the physician immediately to ensure prompt evaluation and intervention. Re-assessing in 15 minutes or stimulating the client with a sternal rub are not appropriate actions in this situation as they do not address the underlying cause of the decrease in GCS. Administering Tylenol with codeine for a headache is also not recommended without further assessment and evaluation of the client's condition.

3. With a breech presentation, the nurse must be particularly alert for which of the following?

• A. quickening
• B. ophthalmia neonatorum
• C. pica
• D. prolapsed umbilical cord

Correct answer: D

Rationale: With a breech presentation, the nurse must be particularly alert for a prolapsed umbilical cord. Prolapsed umbilical cord is a critical emergency situation where the umbilical cord descends into the vagina before the fetal presenting part, leading to compression between the presenting part and the maternal pelvis. This compression can compromise or completely cut off fetoplacental perfusion, endangering the fetus. Immediate delivery should be attempted to save the fetus. Quickening refers to fetal movements felt by the mother, ophthalmia neonatorum is an eye infection in newborns, and pica is a condition characterized by cravings for non-nutritive substances, none of which are directly related to the risks associated with a breech presentation and prolapsed umbilical cord.

4. A client has been taking a drug (Drug A) that is highly metabolized by the cytochrome P-450 system. He has been on this medication for 6 months. At this time, he is started on a second medication (Drug B) that is an inducer of the cytochrome P-450 system. You should monitor this client for:

• A. increased therapeutic effects of Drug A.
• B. increased adverse effects of Drug B.
• C. decreased therapeutic effects of Drug A.
• D. decreased therapeutic effects of Drug B.

Correct answer: C

Rationale: When a client is taking a drug (Drug A) metabolized by the cytochrome P-450 system and is then started on another drug (Drug B) that induces this system, the metabolism of Drug A is increased. This results in decreased therapeutic effects of Drug A as it is broken down more rapidly. Monitoring is required to address potential reduced efficacy. The therapeutic effect of Drug A is diminished, not enhanced. Inducing the cytochrome P-450 system does not directly increase the adverse effects of Drug B. Although Drug B is an inducer, its therapeutic effects are not decreased as it is not metabolized faster.

5. The client with a history of advanced chronic obstructive pulmonary disease (COPD) had conventional gallbladder surgery 2 days previously. Which intervention has priority for preventing respiratory complications?

• A. Incentive spirometry every 1 to 2 hours.
• B. Coughing and deep breathing every 1 to 2 hours.
• C. Getting the client out of bed 4 times daily as ordered by the physician.
• D. Giving oxygen at 4 L/minute according to the physician's order.

Correct answer: C

Rationale: The priority intervention for preventing respiratory complications in a client with advanced COPD who underwent gallbladder surgery is to get the client out of bed 4 times daily. This helps prevent pooling of secretions in the lungs and promotes better lung expansion. Incentive spirometry, coughing, and deep breathing are essential interventions; however, they should be performed more frequently, ideally every 1 to 2 hours, rather than every 4 hours or 4 times daily. Giving oxygen at 4 L/minute could potentially decrease the client's respiratory drive, which is not the priority in this case.

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