الفهرس 
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Abstract
Nasal obstruction is the main complaint of a large number of patients in otolaryngologic practice, most of those patients have inferior turbinate hypertrophy.
This study aims to improve treatment outcomes of turbinoplasty in adults. The main objective was to compare the effect of submucous bipolar diathermy versus coblation for reduction of hypertrophied inferior turbinate under GA in terms of improvement of nasal obstruction and post operative crustations.
The study was conducted as a prospective randomized controlled study following approval of our institutional research board.The study was carried out at the department of otorhinolaryngology, Suez Canal University hospital (SCUH), Ismailia, Egypt.
This a prospective cohort study conducted to compare the effect of submucous bipolar diathermy versus coblation for reduction of hypertrophied inferior turbinate as office-based procedures in terms of post-operative crustations, post-operative improvement of nasal obstruction, intra & post-operative bleeding. Both techniques are mucosal preservation.
The mean age was 27.9± 9.1 years and 29.3± 7.8 years among groups A and B respectively. Females represented 62.5% and 58.3% among groups A and B respectively. The mean BMI was 25.3± 1.3 and 25.8± 0.9 Kg/m2 while the median was 25.7 and 25.8 Kg/m2 among groups A and B respectively. There were 20.8% and 16.7% had chronic illnesses among groups A and B respectively. No significant difference was found between both groups regarding basic characteristics.
SBP was 123.3± 6.9 and 120.6± 2.2 mmHg, DBP was 80.6± 2.2 and 80± 0 mmHg among groups A and B respectively. The mean HR was 84.0± 6.5 and 80.2± 6.3 beats/ minute, while RR was 14.0± 1.2 and 13.9± 1.4 breath/ minute among groups A and B respectively. The temperature was 36.8± 0.2 for both groups. No significant difference was found between the two studied groups.
In preoperative assessment, all patients showed normal ear and oropharyngeal examination. All participants were G3 in Friedmann grading system. The mean VAS was 9.0 ± 0.8 in both groups. No significant difference was found between the two groups regarding preoperative assessment.
After two weeks, there was no difference between the two groups regarding VAS and Friedmann grading system. After two months, there was no difference between the two groups regarding VAS and Friedmann grading system.
There was significant improvement in VAS score in both groups. The VAS 2 weeks postoperative was significantly lower than preoperative in both groups. In addition to that VAS two months postoperative was significantly lower than preoperative in both groups.
In conclusion this study suggested that both techniques diathermy and cauterization have proven to be equally effective with no difference between them regarding postoperative pain and Friedman grading. Coblation is considered effective and safe compared to submucosal diathermy.