Nokea
A client receives fibrinolytic therapy upon admission following a myocardial infarction. He is now receiving an I.V. infusion of heparin sodium at 1,200 units/hour. The dilution is 25,000 units/500 mL. How many milliliters per hour will this client receive?
Correct Answer: 24 mL/hour
Rationale: To calculate: (1,200 units/hour ÷ 25,000 units) × 500 mL = 24 mL/hour. This is a calculation question, not multiple-choice, so no choices or correct answer letter is provided.
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What should the nurse do first when a client with a head injury begins to have clear drainage from his nose?
- A. Compress the nares.
- B. Tilt the head back.
- C. Give the client tissues to collect the fluid.
- D. Administer an antihistamine for postnasal drip.
Correct Answer: C
Rationale: Clear drainage from the nose after a head injury may indicate cerebrospinal fluid (CSF) leakage, a serious condition. The priority is to collect the fluid for analysis to confirm CSF and avoid infection, making providing tissues the first action. Compressing the nares or tilting the head back could increase intracranial pressure or contaminate the fluid, and an antihistamine is inappropriate without confirming the cause.
Which of the following explains the influence of aging on the development of peripheral vascular disease?
- A. Decreased resistance
- B. Increased resistance
- C. Decreased viscosity
- D. Increased viscosity
Correct Answer: B
Rationale: Aging increases vascular resistance due to arterial stiffening and reduced elasticity from collagen buildup and atherosclerosis. This elevates blood pressure and impairs peripheral blood flow, contributing to PVD. Resistance does not decrease, and viscosity changes are less significant in aging-related PVD.
The client has a latex allergy. What should the nurse teach the client to do before having surgery at a free-standing surgery center? Select all that apply.
- A. Determine that there will be a latex-safe environment for surgery.
- B. Report symptoms experienced with the latex allergy (e.g., rhinitis, conjunctivitis, flushing).
- C. Notify the health care providers at the surgery center.
- D. Wear a stainless steel medical alert bracelet into the surgical suite.
- E. Ask to have the surgery at a hospital.
Correct Answer: A,B,C
Rationale: Treatment and diagnostic evaluation must be done in a latex-safe environment. Signs/symptoms may be mild to anaphylaxis. Clients with latex allergy are advised to notify their health care providers and to wear a medical ID; however, all metal and jewelry must be removed prior to surgery as they could conduct an electrical current.
The nurse is assessing a client with cirrhosis who has developed hepatic encephalopathy. The nurse should notify the physician of a decrease in which lab serum that is a potential precipitating factor for hepatic encephalopathy?
- A. Aldosterone.
- B. Creatinine.
- C. Potassium.
- D. Protein.
Correct Answer: C
Rationale: Hypokalemia (C) can precipitate hepatic encephalopathy by increasing ammonia production. Aldosterone (A), creatinine (B), and protein (D) are less directly related.
The nurse observes the client instill eyedrops. The client says, 'I just try to hit the middle of my eyeball so the drops don't run out of my eye.' The nurse explains to the client that this method may cause:
- A. Corneal abrasion.
- B. Increased intraocular pressure.
- C. Systemic absorption of the medication.
- D. Ineffective distribution of the medication.
Correct Answer: A
Rationale: Instilling eyedrops directly onto the cornea (middle of the eyeball) can cause corneal abrasion due to the dropper tip or improper technique. Drops should be placed in the lower conjunctival sac.