RESUMO
Twenty-five patients with chronic pain were treated with nerve blocks. They were divided into two groups, A and B, according to the volume of local anesthetic required for surgical anesthesia by standard nerve block techniques. The 16 patients in group A had pain in the distribution of small nerves, which could be blocked with 5 ml or less. They were blocked in a random, double-blind crossover fashion using 0.5% bupivacaine or 0.02% morphine. The nine patients in group B were injected simultaneously with saline, 30 ml perineurally and 1 ml intramuscularly. Morphine (6 mg) was added, in a random, double-blind fashion, to one of the injections. A second pair of injections was subsequently done, using morphine by the alternative route. Perineural morphine provided statistically longer lasting pain relief than did either intramuscular morphine or perineural bupivacaine.
Assuntos
Analgesia/métodos , Morfina/administração & dosagem , Dor Intratável/terapia , Relação Dose-Resposta a Droga , Método Duplo-Cego , Humanos , Injeções/métodos , Bloqueio Nervoso/métodos , Distribuição Aleatória , Fatores de TempoRESUMO
15 patients with pain secondary to cancer underwent radiofrequency glossopharyngeal rhizotomy by the percutaneous approach. 11 patients had complete relief while 4 patients had partial relief. All patients presented, after surgery, some impairment in glossopharyngeal function.
