Nokea
An order is written for a patient to receive 1000 mL of normal saline IV over 8 hours. If the IV infusion set is a microdrip set that delivers 60 drops/mL, how many drops per minute should the patient be receiving?
- A. 60 drops/min
- B. 120 drops/min
- C. 240 drops/min
- D. 480 drops/min
Correct Answer: B
Rationale: If a patient were to receive 1000 mL in 8 hours, dividing 1000 by 8 would mean that the patient would receive 125 mL in 1 hour, or 60 minutes. Setting up the equation, 60 drops/mL X = 125 mL/60 min, and cross-multiplying, the answer is 120 drops/min.
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Diane may benefit from cyclosporine (Sandimmune). Cyclosporin may be prescribed to:
- A. Treat rheumatoid arthritis
- B. Treat patients with corn allergy
- C. Pregnant patients
- D. Treat patients with liver dysfunction
Correct Answer: A
Rationale: Cyclosporine treats rheumatoid arthritis; corn allergy , pregnancy , or liver issues are not indications.
An agonist is substance that:
- A. Interacts with the receptor without producing any effect
- B. Interacts with the receptor and initiates changes in cell function, producing various effects
- C. Increases concentration of another substance to produce effect
- D. Interacts with plasma proteins and doesn't produce any effect
Correct Answer: B
Rationale: An agonist binds receptors and activates them, producing a biological effect.
The nurse is talking with a group of nursing students who are doing clinical hours on the unit. A student asks if all intramuscular (IM) drugs are absorbed the same. What factor would the floor nurse tell the students to affect absorption of the IM administration of drugs?
- A. Perfusion of blood to the subcutaneous tissue
- B. Integrity of the mucous membranes
- C. Environmental temperature
- D. Blood flow to the gastrointestinal tract
Correct Answer: C
Rationale: A cold environmental temperature can cause blood vessels to vasoconstrict and decreases absorption or in a hot environment vasodilate and increase absorption of IM medications. Blood flow to the subcutaneous tissues interferes with subcutaneous injection and blood flow to the gastrointestinal (GI) tract causes alterations in absorption for oral medications. The condition of mucous membranes can interfere with sublingual (under the tongue) and buccal (in the cheek) administration of drugs.
A patient presents in the emergency department with a massive overdose of a drug. The most worrisome signs and symptoms include excessive cardiac stimulation (severe tachycardia, palpitations, angina, etc.). The EDphysician orders IV administration a -adrenergic blocker, saying (correctly) it is the only drug likely to normalize cardiac function quickly and save the patient's life. Which of the following was the most likely drug the patient overdosed on?
- A. A second-generation sulfonylurea (e.g., glipizide, glyburide)
- B. Insulin
- C. Levothyroxine
- D. Prednisone (oral glucocorticoid)
Correct Answer: C
Rationale: Levothyroxine overdose causes thyrotoxicosis, leading to cardiac overstimulation treatable with beta-blockers.
Which of the following is a thiazolidinediones:
- A. Pioglitazone
- B. Exenatide
- C. Sitagliptine
- D. Chlorpropamide
Correct Answer: A
Rationale: Pioglitazone is a thiazolidinedione that enhances insulin sensitivity via PPAR-gamma.