Dacriocistorrinostomia endoscópica

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Abstract

A abordagem cirúrgica do saco lacrimal por via intranasal assistida por videoendoscopia é, hoje, realizada com altos índices de sucesso. Apesar da técnica tradicional por via externa apresentar resultados bastante satisfatórios, tem a grande desvantagem de necessitar de uma incisão de pele e sua consequente cicatriz local. Com o desenvolvimento e aprimoramento do instrumental e das técnicas endonasais, a abordagem endoscópica é cada vez mais utilizada. OBJETIVO: Este artigo revisa a anatomia do sistema lacrimal, a avaliação pré-operatória e os detalhes técnicos da cirurgia assistida por endoscopia que podem proporcionar os desfechos cirúrgicos mais favoráveis ao paciente. As complicações e as causas de insucesso cirúrgico são também brevemente revisadas. METODOLOGIA: Trata-se de uma revisão da experiência dos autores nos últimos 10 anos de aplicação da técnica endoscópica para cirurgia do saco lacrimal. CONCLUSÃO: Os resultados da dacriocistorrinostomia endoscópica são, no mínimo, iguais aos da técnica tradicional externa. Apesar disto, o trabalho conjunto do oftalmologista e do otorrinolaringologista é muito vantajoso para o melhor manejo possível do paciente com epífora.

Translated abstract

The endonasal surgical approach of the lacrymal sac assisted by video-endoscopy is carried out today with high success rates. Despite the satisfactory results reached with the traditional external approach, it has the disadvantage of requiring a skin incision and a consequent local scar. With the development and enhancement of the endonasal techniques, the endoscopic approach is increasingly preferred by surgeons. OBJECTIVE: This paper reviews the lacrymal system anatomy, the preoperative assessment and the technical details of the endoscopic assisted approach which may provide better surgical outcomes for patients. We will also briefly discuss complications and causes for surgical failure. METHODOLOGY: This is a review of the experience of the authors in the past 10 years of employing the endoscopic technique for the lacrymal sac surgery. CONCLUSION: Outcomes regarding the endoscopic dacryocystorhinostomy are, at leas, equal to those from the traditional external approach. Notwithstanding, the joint work between the otorhinolaryngologist and the ophthalmologist is of great benefit to patients with epiphora.

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Powered endoscopic dacryocystorhinostomy.

Peter-John Wormald (2001)

To describe powered endoscopic dacryocystorhinostomy (DCR) with full sac exposure and primary mucosal anastomosis and report perioperative and follow-up results achieved with this procedure. Prospective, nonrandomized cohort study. Operative and postoperative data were prospectively collected on 36 unselected patients (15 men and 21 women; mean age, 62.4 y; range 14-91 y) who presented to a lacrimal clinic with epiphora and obstruction of the drainage of the nasolacrimal system and who consecutively underwent either primary or revision powered endoscopic DCR. A total of 47 procedures were performed; all were done by the same surgeon, who used a standardized surgical technique. Follow-up evaluations included symptom evaluation and endoscopic assessment of the newly created ostium with fluorescein testing at each postoperative visit. The only surgical complication was one case of orbital fat exposure. Forty-five of the 47 DCRs were patent after a mean follow-up of 11 months (standard deviation = 5 mo), yielding a success rate of 95.7%. Patency was assessed by endoscopic visualization of the ostium and fluorescein (initially placed on the conjunctiva) in the ostium. One of the 47 DCRs was a failure and one patient had O'Donaghue tubes in place with symptoms. Two patients with a patent ostium and positive results on fluorescein testing continued to have some symptoms. Powered endoscopic DCR with full sac exposure and primary mucosal apposition has a success rate comparable to that achieved with external DCR.