Nasal polyposis is chronic disease affecting nasal & sinus mucosa. Patients resistant to medical  treatment are subjected to polypectomy with endoscopic sinus surgery using microdebrider. Study aims to assess surgical and technical outcomes, intraoperative & postoperative results of microdebrider assisted polypectomy with endoscopic sinus surgery for bilateral ethmoidal polyposis. 

In 30 patients with bilateral ethmoidal polyposis, microdebrider assisted polypectomy followed by endoscopic sinus surgery was done. Parameters were noted & tabulated for statistical evaluation. 

Male:female ratio was 8:7. Age ranged from 21-63years. Majority belonged to 31-40 years (46.6%). Nasal obstruction (100%) & hyposmia/ anosmia (86.6%) were main presenting complaints. 60% had score of 3 & 40% had score 2 on DNE. 30 patients (100%) & 24 patients (80%) had complete opacification of anterior & posterior ethmoids respectively in CT. Duration of surgery was 47.73+/-1.16 min; average blood loss during surgery was 113.87+/-17.38ml. Boezardt endoscopic bleeding was grade-3 (33.33%) in 10 patients & grade-2 (66.67%) in 20 patients. 16 (53.3%) patients had nasal obstruction, 6 (20%) discharge, 30 (100%) had crusting on 7th post-op day. 4 (13.3%) had nasal obstruction; 4 (13.3%) synechiae formation, 4 (13.3%) polypoidal changes on 1st month post-op. 4 (13.3%) had nasal obstruction, 2 (6.6%) nasal discharge & 2 (6.6%) over all discomfort; 2 (6.6%) discharge, 2(6.6%) synechiae formation & 2(6.6%) polypoidal changes on 3rd month post-op. 4 (13.3%) nasal obstruction, 2 (6.6%) nasal discharge with 2 (6.6%) showing overall discomfort; 2 (6.6%) discharge, 4 (13.3%) polyps on 6th month post-op. 

Microdebrider provides surgical & technical advantages in terms of lesser duration of surgery, less bleeding during surgery, precise removal of polyps preserving adjacent nasal mucosa, better surgical exposure & hence better clearance of disease helping in better healing & lesser post-operative complications & recurrence