What is the role of spirography in bronchial thermoplasty (BT)?

Updated: Mar 30, 2021
  • Author: Said A Chaaban, MD; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Answer

Patients enrolled in the previous trials for bronchial thermoplasty had a prebronchodilator FEV1 of 60% or more of predicted. [24, 33, 34] All patients underwent screening spirography before and on the day of the procedure to assess their disease stability. Those who had a drop in their FEV1 of more than 10% of their best value were rescheduled to undergo the procedure at a later date.

While monitoring the patients in the recovery area after the procedure, spirography is performed again to document an FEV1 value of 80% or more of the preprocedure measurement. The patient’s FEV1 values were assessed after 6 weeks and then at 3, 6, 9, and 12 months from the preceding procedure.


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