Nokea
Which of the following are well-perfused tissues?
- A. Brain
- B. Skeletal
- C. Bone
- D. Adipose
Correct Answer: A
Rationale: The brain is a well-perfused tissue due to its high blood flow, unlike skeletal muscle (moderate), bone (low), and adipose (poorly perfused).
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Tick the substance which changes the activity of an effector element but doesn't belong to second messengers:
- A. cAMP
- B. cGMP
- C. G-protein
- D. Calcium ions
Correct Answer: C
Rationale: G-protein is a transducer, not a second messenger, unlike cAMP, cGMP, and calcium.
Which of the following statements about NSAIDs is true?
- A. Most NSAIDs are weak acids
- B. Most NSAIDs are metabolised by the liver into inactive metabolites
- C. Oxicams tend to have the longest half-lives of all NSAIDs
- D. All of the above
Correct Answer: D
Rationale: All are true: NSAIDs are weak acids, metabolized by the liver, and oxicams (e.g., piroxicam) have long half-lives.
A nurse is caring for an older adult client who has a new prescription for Digoxin and takes multiple other medications. The nurse should recognize that concurrent use of which of the following medications places the client at risk for Digoxin toxicity?
- A. Phenytoin
- B. Verapamil
- C. Warfarin
- D. Aluminum hydroxide
Correct Answer: B
Rationale: Verapamil increases digoxin levels by reducing clearance, risking toxicity.
While caring for a patient scheduled for knee replacement surgery, the nurse provides cefazolin (Ancef) as ordered 30 minutes pre-operatively. The nurse knows that teaching has been effective by which of the following client statements?
- A. The antibiotic is given as a prophylactic to help reduce the risk of infection after surgery.'
- B. This is a palliative medication to help ease the pain from surgery.'
- C. This medication will replace vitamins and minerals that may be lost due to bleeding during surgery.'
- D. This medication will help the surgeon identify areas of bone destruction due to arthritis.'
Correct Answer: A
Rationale: Cefazolin is administered pre-operatively as prophylaxis to prevent surgical site infections, aligning with standard practice and effective patient understanding.
Which drug(s) would be considered to be in the category Schedule II? (Select all that apply.)
- A. Marijuana
- B. Morphine
- C. Amphetamines
- D. Fiorinal
Correct Answer: C
Rationale: Percodan and amphetamines are Schedule II drugs with high abuse potential. Marijuana is Schedule I, Fiorinal is Schedule III.