Resumo

MORA DIAZ, I. et al. Decision analysis: cost-effectiveness in the surgical treatment of trigeminal neuralgia. Rev. Soc. Esp. Dolor [online]. 2013, vol.20, n.4, pp.161-169. ISSN 1134-8046.  https://dx.doi.org/10.4321/S1134-80462013000400003.

Introduction: Trigeminal neuralgia is a facial pain syndrome known and characterized by severe, intermittent, electric shock-like, shooting pain in the face for which a number of surgical therapies have been used. To date no ideal, minimally invasive, patient-acceptable treatment is available, hence both patients and specialists face substantial uncertainty when making decisions regarding therapeutic action. Objective: To identify which surgical treatment for TN offers the best opportunity in terms of cost-effectiveness. Material and method: A study was performed using a decision analysis/cost-effectiveness analysis design considering five surgical alternatives in the management of TN: radiofrequency thermocoagulation, glycerol microcompression, balloon microcompression, radiosurgery, and microvascular decompression. Data were obtained from the literature. A review was carried out of the MEDLINE database from 2000 to 2010 via PubMed Central. Studies were selected that addressed primary trigeminal neuralgia and demonstrated pain relief and reduced mortality and complication rates. In all 196 studies were identified but only 22 (11.22 %) were eligible for the study. The software package used was the DATA 3.5 for Health Care, version 3.5.5, program by TreeAge Software Inc. Results: Microvascular decompression and thermocoagulation are the techniques more likely to provide effective pain relief, with expected values of 0.8946 and 0.8863, respectively. For the relationship between cost and outcome pain-free days were considered; the best choice in terms of cost-effectiveness is surgery and thermocoagulation, with a lower value in the marginal cost-effectiveness ratio: $171.58 for an effectiveness of 89 % per treated patient. Conclusion: Considering that both radiofrequency thermocoagulation and microvascular decompression are the most commonly used surgical procedures because of their high effectiveness, we conclude that radiofrequency thermocoagulation is more beneficial, has few complications, and is less costly.

Palavras-chave : Trigeminal neuralgia management; cost-effectiveness.

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