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Archivos de la Sociedad Española de Oftalmología
versión impresa ISSN 0365-6691
Resumen
FALCO-MOLMENEU, E. et al. Anesthesia for vitreoretinal surgery using a retrobulbar catheter technique. Arch Soc Esp Oftalmol [online]. 2007, vol.82, n.3, pp.147-152. ISSN 0365-6691.
Objective: To evaluate peroperative pain management using a flexible spinal anesthesia catheter introduced into the retrobulbar space which allows injections of local anesthetics for vitreoretinal surgery. Methods: Twenty-five patients who underwent vitreoretinal surgery receiving retrobulbar anesthesia with 3.5 ml ropivacaine 0.75%. After injection, a catheter with spinal needle 22G x 1 1/2 (40 x 0.7 mm) was introduced to the retrobulbar muscle cone. The needle was withdrawn and the catheter was fixed. When the patient started to feel pain (grade 3 or higher), 2 ml ropivacaine 0.75% was administrated through the catheter during surgery or 2 ml ropivacaine 0.2% in the postoperative period. The catheter was removed 24-48h later. Results: During surgery, 1 patient (4%) received a re-injection of 2 ml ropivacaine 0.75% because of pain. Three patients (12%) experienced pain of grade 3 or higher in the postoperative period and needed re-injection of 2 ml ropivacaine 0.2%. Re-injections were an effective method to achieve analgesia. Adverse effects were not noticed. Conclusions: The retrobulbar catheter technique is a procedure which allows multiple re-injections of local anesthetics; it provides adequate analgesia during surgery and rapid, effective and safe postoperative pain management.
Palabras clave : Vitreoretinal surgery; retrobulbar catheter; ropivacaine; regional anesthesia.