A client who weighs 132 lb receives a prescription for lorazepam 44 mcg/kg IV to be administer 20 minutes before a scheduled procedure. The medication is available in 2 mg/mL vial. How many mL should the nurse administer?
(Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["1.3"]
Convert pounds to kilograms.
- 1 pound = 0.453592 kilograms
- 132 pounds * 0.453592 kg/pound = 59.87 kilograms
Step 2: Calculate the total dose in micrograms.
- 44 micrograms/kilogram * 59.87 kilograms = 2635.08 micrograms
Step 3: Convert micrograms to milligrams.
- 1 milligram = 1000 micrograms
- 2635.08 micrograms / 1000 micrograms/milligram = 2.63508 milligrams
Step 4: Calculate the volume to be administered.
- Concentration of lorazepam = 2 milligrams/milliliter
- Volume = Dose / Concentration
- Volume = 2.63508 milligrams / 2 milligrams/milliliter = 1.31754 milliliters
Therefore, the nurse should administer approximately 1.3 milliliters of the lorazepam solution.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Rationale
A. In the early phase following a burn injury, there is increased capillary permeability due to the release of inflammatory mediators. This results in fluid shifting from the intravascular space into the interstitial space (capillary leaking), leading to hypovolemia and decreased tissue perfusion. Administering crystalloid fluids helps to restore intravascular volume (fluid resuscitation) and improve tissue perfusion.
B. Burn injuries can lead to increased evaporative water loss through damaged skin (insensible water loss). Crystalloid fluids help to replace this lost fluid and maintain adequate hydration status in the client.
C. In severe burn injuries, there may be a need for blood transfusions due to hemorrhage or ongoing blood loss. Crystalloid fluids can help to extend plasma volume temporarily until blood products are available for transfusion, thereby supporting circulatory stability.
D. Burn injuries can disrupt electrolyte balance due to fluid shifts and tissue damage. Crystalloid fluids contain electrolytes (such as sodium and chloride) that help to restore and maintain electrolyte balance in the body.
Correct Answer is D
Explanation
Rationale
A. Herpes simplex virus type II (HSV-II) primarily spreads through direct contact with the lesions and is not airborne. Airborne precautions and negative airflow rooms are not necessary for this condition.
B. Scarlet fever is caused by Group A Streptococcus bacteria and typically spreads through respiratory droplets. However, scarlet fever itself does not require airborne precautions. If complicated with pneumonia, respiratory droplets could potentially spread the infection, but specific airborne precautions are generally not required unless there are other pathogens involved that require it.
C. Scabies is caused by the Sarcoptes scabiei mite and spreads through direct skin-to-skin contact. It does not require airborne precautions or negative airflow rooms.
D. Apositive Mantoux test and sputum cultures positive for acid-fast bacillus (AFB) suggest tuberculosis (TB) infection. TB is spread through airborne droplets (e.g., coughing, sneezing), and therefore, requires airborne precautions including negative airflow rooms to prevent transmission to others.A
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