Letters Perioperative β blockade

Sequential analysis shows that β blockade in non-cardiac surgery is ineffective and may even be harmful

BMJ 2013; 347 doi: http://dx.doi.org/10.1136/bmj.f6296 (Published 22 October 2013) Cite this as: BMJ 2013;347:f6296
  1. Andrea Messori, coordinator1,
  2. Valeria Fadda, research assistant1,
  3. Dario Maratea, research assistant1,
  4. Sabrina Trippoli, research assistant1
  1. 1HTA Unit, Area Vasta Toscana Centro, 50100 Florence, Italy
  1. andrea.messori.it{at}gmail.com

Bolsin and colleagues state that “conclusive evidence has not emerged” on the use of perioperative β blockers.1 Sequential analysis is a tool for quantifying the amount of information,2 and it can therefore determine when …

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