Does Strepsils® With Lignocaine Lozenges Reduce Post Operative Sore Throat Due To Supraglottic Airway Devices
Status:
Completed
Trial end date:
2019-08-31
Target enrollment:
Participant gender:
Summary
The primary objective of this study is to assess the effect of preoperative administration of
oral Strepsils® with added Lignocaine lozenges on the incidence of postoperative sore throat
(POST) after general anaesthesia using a Supraglottic Airway Device (SAD).
Patients undergoing surgery with general anaesthesia will require ventilation of their lungs
with either a flexible tube placed beyond the voice box called an endotracheal tube (ETT) or
a tube placed above the voice box called a Supraglottic Airway Device. This tube helps
oxygenate the patient and delivers anaesthetic gas to the lungs.
The procedure is invasive and uncomfortable, and one of the most common complaints is a sore
and inflamed throat after the tube is taken out. This is termed postoperative sore throat
(POST). The incidence of POST after SAD is comparable with the ETT and though many studies
have focused on ETT, few have examined the SAD.
After written informed consent is received in pre-op, a sealed and coded envelope with either
the Strepsils lozenges or the placebo lozenges will be given to the patient to be
administered orally, with the instruction to dissolve the lozenge by sucking on it 45 minutes
prior to surgery. Upon completion of surgery and emergence from general anaesthesia, the
patient will be assessed regarding the incidence and severity of sore throat, difficulty in
swallowing and difficulty in speaking by the investigator using an interview format. The
severity of these symptoms will be graded on a 4-point scale ranging from 0 to 3; 0 being no
symptoms, 1 being mild symptoms, 2 being moderate symptoms, and 3 being severe symptoms. This
evaluation will be performed at 30 minutes and 24 hours post removal of SAD.