PMID- 33086859 OWN - NLM STAT- MEDLINE DCOM- 20210818 LR - 20210818 IS - 1945-8932 (Electronic) IS - 1945-8932 (Linking) VI - 35 IP - 4 DP - 2021 Jul TI - Sinus Irrigation Penetration After Proposed Modified Draf IIa Technique in a Side-to-Side Cadaveric Model. PG - 487-493 LID - 10.1177/1945892420969141 [doi] AB - BACKGROUND: Endoscopic sinus surgery (ESS) is an effective intervention for patients with medically refractory chronic rhinosinusitis. Frontal sinusotomy is the most challenging part of ESS, with one of the key outcomes being access for topical irrigations. OBJECTIVE: The purpose of this study is to compare irrigation penetration into the frontal sinus following Draf IIa versus modified Draf IIa frontal sinusotomy. METHODS: Four fresh cadaver heads were used in this experiment. Draf IIa was performed on one side of each head and a modified Draf IIa on the contralateral side. This proposed modification consists of a Draf IIa combined with an agger nasi punch-out procedure and partial trimming of the vertical lamella of the middle turbinate back to the posterior table of the frontal sinus without drilling the beak. Each head was irrigated with methylene blue-dyed water and recorded by rigid endoscopy through an endonasal view (EV) of the frontal sinus and frontal trephination view (TV). Two blinded rhinologists scored the extent of staining (using an ordinal scale of 0 to 3) for each side. A case report where the modified Draf IIa was performed is also described. RESULTS: After modified Draf IIa sinuosotomy, the mean score for the EV was 2.125 and for the TV was 2, versus 0.875 and 0.625 for traditional Draf IIa, respectively. There was a statistically significant increase for both EV (p = 0.019) and TV (p = 0.018) after modified Draf IIa. CONCLUSION: In our cadaveric model, this procedural modification improved penetration of postoperative irrigations into the frontal sinus. This simple technique may be easily adapted into frontal ESS when indicated. FAU - Issa, Khalil AU - Issa K AUID- ORCID: 0000-0003-1899-5109 FAU - Teitelbaum, Jordan I AU - Teitelbaum JI AD - Division of Rhinology & Endoscopic Skull Base Surgery, Department of Head and Neck Surgery & Communications Sciences, Duke University Medical Center, Durham, North Carolina. FAU - Jang, David W AU - Jang DW AD - Division of Rhinology & Endoscopic Skull Base Surgery, Department of Head and Neck Surgery & Communications Sciences, Duke University Medical Center, Durham, North Carolina. FAU - Goldstein, Bradley J AU - Goldstein BJ AD - Division of Rhinology & Endoscopic Skull Base Surgery, Department of Head and Neck Surgery & Communications Sciences, Duke University Medical Center, Durham, North Carolina. FAU - Chan, Lyndon AU - Chan L AD - Division of Rhinology & Endoscopic Skull Base Surgery, Department of Head and Neck Surgery & Communications Sciences, Duke University Medical Center, Durham, North Carolina. FAU - Hachem, Ralph Abi AU - Hachem RA AD - Division of Rhinology & Endoscopic Skull Base Surgery, Department of Head and Neck Surgery & Communications Sciences, Duke University Medical Center, Durham, North Carolina. LA - eng PT - Case Reports PT - Journal Article DEP - 20201021 PL - United States TA - Am J Rhinol Allergy JT - American journal of rhinology & allergy JID - 101490775 SB - IM MH - Cadaver MH - Endoscopy MH - *Frontal Sinus/surgery MH - Humans MH - *Sinusitis/surgery MH - Therapeutic Irrigation OTO - NOTNLM OT - Draf IIA OT - endoscopic sinus surgery OT - frontal sinusotomy OT - irrigations OT - surgical technique OT - topical therapy EDAT- 2020/10/23 06:00 MHDA- 2021/08/19 06:00 CRDT- 2020/10/22 05:25 PHST- 2020/10/23 06:00 [pubmed] PHST- 2021/08/19 06:00 [medline] PHST- 2020/10/22 05:25 [entrez] AID - 10.1177/1945892420969141 [doi] PST - ppublish SO - Am J Rhinol Allergy. 2021 Jul;35(4):487-493. doi: 10.1177/1945892420969141. Epub 2020 Oct 21.