The healthcare provider prescribes penicillin 200,000 units intramuscularly for a patient with pneumonia.

The available vial is labeled “Penicillin 500,000 units/mL”. How much penicillin should be administered to the patient? (Enter numerical value only.

If rounding is required, round to the nearest tenth.)

Answer and Explanation

The Correct Answer is ["0.4"]

Step 1 is to determine the amount of penicillin in each milliliter (mL) of the available solution. The vial is labeled as “Penicillin 500,000 units/mL”.

Step 2 is to divide the prescribed dose by the concentration per mL. So, the calculation is 200,000 units ÷ 500,000 units/mL. The result is 0.4 mL.

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Correct Answer is C

Explanation

C. Prepare ice packs for placement in the patient’s axillary area.This response is crucial because the symptoms described—muscle rigidity and hyperthermia—are indicative ofmalignant hyperthermia, a serious reaction that can occur after the administration of succinylcholine, especially in conjunction with certain anesthetics. Immediate cooling measures, such as applying ice packs, are essential to help reduce the patient's elevated body temperature.

Rationale for Other Options:

A. Call the PACU nurse to prepare for prolonged ventilatory support.: While preparing for ventilatory support may be necessary later, immediate action to address hyperthermia is critical.
B. Hold a prescription for dantrolene until the fever is reduced.: Dantrolene is the antidote for malignant hyperthermia and should be administered as soon as possible rather than held.
D. Determine if prescribed antibiotics were administered preoperatively.: This action is not relevant to the immediate management of malignant hyperthermia.

A. Chronic insomnia. B. Puffy, bleeding gums. C. Double vision. D. Blood pressure 100/78 mm Hg.

Correct Answer is C

Explanation

C. Double vision.Double vision, or diplopia, can indicatephenytoin toxicity, which is a serious condition that may lead to impaired vision and increased risk of falls or injuries. This side effect suggests that the patient may be experiencing adverse reactions to the medication, necessitating prompt evaluation and intervention, such as checking serum phenytoin levels and possibly adjusting the medication regimen

.The other options do not require immediate intervention:

A. Chronic insomniais not a critical side effect of phenytoin and may be managed with lifestyle modifications or further assessment.
B. Puffy, bleeding gumsare common side effects associated with phenytoin (gingival hyperplasia) but are not immediately life-threatening.
D. Blood pressure 100/78 mm Hgis within normal limits and does not indicate a need for urgent action

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Naxlex Comprehensive Predictor Exams

A patient in the operating room has been administered succinylcholine and is now experiencing muscle rigidity and an extremely high temperature. What should the nurse do next?

Correct Answer is C

Explanation

Rationale for Other Options:

A client with a seizure disorder is seen at the clinic for a follow-up visit and a prescription renewal for phenytoin. Which assessment finding warrants immediate intervention by the nurse?

Correct Answer is C

Explanation

A patient with small cell carcinoma of the lung is admitted with syndrome of inappropriate antidiuretic hormone (SIADH). The patient’s serum sodium level increases from 120 mEq/L to 125 mEq/L as they respond to treatment. Based on this finding, what intervention should the nurse implement?

A client with multiple sclerosis has urinary retention related to sensorimotor deficits. Which action should the nurse include in the client’s plan of care?

The nurse is teaching a patient with chronic obstructive pulmonary disease (COPD) about huff coughing to clear secretions. During the patient’s return demonstration, the patient exhales using pursed lips. What should the nurse do next?

A client presents to the emergency department reporting chest pain that is radiating to the left arm, shortness of breath, and diaphoresis. Which medication does the nurse anticipate being prescribed by the healthcare provider?

A client with a history of hypothyroidism was initially admitted with lethargy and confusion. Which additional finding should the nurse act upon immediately?

A young adult client with osteoarthritis of both knees expresses the desire to continue daily walks in the park with friends. How should the nurse respond?

A client with right hydronephrosis and a history of renal calculi is preparing for discharge following a retrograde pyelogram. Which instruction should the nurse include in the client’s discharge instructions?

The nurse assesses a client with cirrhosis and finds 4+ pitting edema of the feet and legs, and massive ascites. Which mechanism contributes to edema and ascites in clients with cirrhosis?