Emergency Medicine Journal 2007;24:742
© 2007 BMJ Publishing Group Ltd and the College of Emergency Medicine.
EMQ ANSWERS
For questions on page
690
| The first 150 words of the full text of this article appear below. |
Answer 1
Theme: Anaphylaxis
- True.1 2
- False. Corticosteroids take several hours to work.
- True.3
- True. Note: patients who do not receive adrenaline probably need no observation at all.3
Answer 2
Theme: Resuscitation room investigations
- False. PIOPED II found a sensitivity of 83%, increasing to 90% only when combined with CT venography. The authors concluded that doctors should be wary of discordant results—for example, high clinical probability and negative CTPA. In this particular circumstance also consider ultrasound of the legs.4
- False. Probably less,
80%.5
- True. The majority of D-dimer assays report a performance in excess of 90%.
- False. B-natriuretic peptide studies are plagued by a poor gold standard (cardiology opinion), different cut-off levels in each study and sensitivities of about 85%. Their role in emergency medicine is questionable.6
Answer 3
Theme: Adenosine treatment
- True. Patients with heart transplants are super-sensitive to adenosine; consider starting with a smaller dose than
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