Try it
Orthopaedics · Metabolic bone disease: zoledronic acid acute-phase reaction
Sample itemA woman has fever, myalgia and bone pain the day after her first intravenous infusion of zoledronic acid for osteoporosis. What is the best explanation and management?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
D. Acute-phase reaction, treated with paracetamol
An acute-phase reaction with flu-like symptoms occurs in up to a third of patients after the first dose of an intravenous nitrogen-containing bisphosphonate. It settles in a few days and is controlled with paracetamol, and it is much less frequent with later infusions.
Option by option
A. Bacterial sepsis, treated with broad-spectrum antibiotics
Sepsis is not suggested by symptoms that start within a day of an infusion and are limited to flu-like features.
B. Hypocalcaemic tetany, treated with intravenous calcium
Hypocalcaemia causes perioral tingling and spasm, not fever and myalgia.
C. Drug allergy, treated by permanent withdrawal of all antiresorptives
True allergy is uncommon and the reaction here does not require stopping all antiresorptive therapy.
D. Acute-phase reaction, treated with paracetamol (correct)
Correct. A self-limiting flu-like reaction after the first infusion is an acute-phase reaction.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
More Orthopaedics questions
- Upper limb fracturesWhich complication is characteristic of a fracture through the waist of the scaphoid?
- Fractures in childrenA child with a displaced supracondylar fracture of the humerus develops a painful, pale…
- Bone tumoursA teenager has knee pain and a radiograph around the distal femur showing a sunburst per…
- HipA positive Trendelenburg sign is due to weakness of the gluteus medius and minimus. Whic…