Abstract
Various types of the harmonic scalpel blades have been used for tonsillectomy since the early 2000s with varying successes. The HARMONIC ACE®+23cm shears is a relatively new blade which has not been studied in an adult population yet. A randomized controlled pilot study was performed comparing the HARMONIC ACE®+23cm shears (HS) and monopolar electrocautery (EC) tonsillectomy in 20 patients. Intraoperative blood loss, pain control, return to normal diet and activity as well as patient satisfaction outcomes were compared between these two arms. The operative time was comparable. Compared to the EC arm, there was less intraoperative bleeding, lower risks of delayed haemorrhage and readmission in the HS arm. Post-operative pain scores and use of analgesia were similar. There was earlier return to normal diet and activity in the HS arm compared to the EC arm. More patients in the HS arm recommended using HARMONIC ACE®+23cm shears compared to those in the EC arm. This is a non-inferiority study which suggests that the HARMONIC ACE®+23cm shears is comparable to monopolar electrocautery in terms of efficacy and post-operative complication rates with better patient satisfaction outcomes. The main weakness of the study is a small study population. This is the first reported study comparing the use of the HARMONIC ACE®+23cm shears with monopolar cautery in tonsillectomy. A prospective adequately powered study validated by objective outcome measures would be useful to verify the findings from this pilot study.
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