120
Participants
Start Date
December 31, 2011
Primary Completion Date
July 31, 2012
Study Completion Date
August 31, 2012
Lidocaine
Applying of 5 puff controlled released (50 mg) transoral spray of lidocaine (10 mg=1 puff).
Placebo
Applying of 5 puff controlled released (50 mg) transoral spray of placebo (excipients of trade mark of lidocaine ensuring the patient masking).
Hospital Universitario Infanta Cristina, Parla
Hospital Universitario Infanta Cristina
OTHER