A nurse is preparing to administer benztropine 2 mg IM every 12 hr to a client who is experiencing an extrapyramidal reaction. Available is benztropine 1 mg/mL for injection. How many ml should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["2"]
The nurse is preparing to administer benztropine 2 mg IM every 12 hours. The concentration of the available benztropine is 1 mg/mL.
To calculate the volume (mL) of the medication needed for the prescribed dose, you can use the formula:
Volume (mL) = Dose (mg) / Concentration (mg/mL)
Plugging in the values:
Volume (mL) = 2 mg / 1 mg/mL = 2 mL
So, the nurse should administer 2 mL of benztropine 1 mg/mL for each dose. Since we're looking for a whole number, we round to the nearest whole number, which is 2 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["C","E"]
Explanation
Fine hand tremors and pill rolling are not indicative of tardive dyskinesia. These symptoms are more commonly associated with other neurological or movement disorders.
B. Urinary retention and constipation:
Urinary retention and constipation are not symptoms of tardive dyskinesia. These symptoms are more related to anticholinergic effects of certain medications.
C. Facial grimacing and eye blinking:
Facial grimacing and repetitive, involuntary movements such as eye blinking are characteristic of tardive dyskinesia. These abnormal movements of the face and eyes are commonly seen in individuals who have been on long-term antipsychotic medications, especially older ones like haloperidol.
D. Involuntary pelvic rocking and hip thrusting movements:
Involuntary pelvic rocking and hip thrusting movements are not typical symptoms of tardive dyskinesia. These types of movements are less associated with antipsychotic-induced movement disorders.
E. Tongue thrusting and lip-smacking:
Tongue thrusting and lip-smacking are classic symptoms of tardive dyskinesia. These repetitive, involuntary movements involving the mouth and tongue are often observed in individuals who have been on antipsychotic medications for an extended period of time.
Correct Answer is ["0.75"]
Explanation
To calculate the volume (ml) of haloperidol decanoate needed for a dose of 75 mg, you can use the following formula:
Volume (ml) = Dose (mg) / Concentration (mg/ml)
Given:
Dose = 75 mg
Concentration = 100 mg/ml
Plugging in the values:
Volume (ml) = 75 mg / 100 mg/ml
Volume (ml) = 0.75 ml
Rounding to the nearest hundredth:
Volume (ml) = 0.75 ml
So, the nurse should administer 0.75 ml of haloperidol decanoate for the dose of 75 mg.
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