Analgesic effect of intravenous ATP on postherpetic neuralgia in comparison with responses to intravenous ketamine and lidocaine.
Analgesic effect of intravenous ATP on postherpetic neuralgia in comparison with responses to intravenous ketamine and lidocaine.
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DOI:
10.1007/s00540-004-0273-1
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发表时间:
2005-01-01
影响因子:
2.8
通讯作者:
Hanaoka, Kazuo
中科院分区:
文献类型:
--
作者:
Hayashida, Masakazu;Fukuda, Ken-Ichi;Hanaoka, Kazuo
PURPOSE: No study has been performed on the analgesic effect of adenosine 5'-triphosphate (ATP) on postherpetic neuralgia (PHN). We conducted an open-label trial of ATP in patients with PHN, and compared ATP with ketamine and lidocaine.METHODS: Twelve patients with PHN were studied. On separate days, ketamine (0.3 mg.kg(-1)), lidocaine (2 mg.kg(-1)), and ATP (100 microg.kg(-1).min(-1) or less for 120 min) were administrated intravenously. The intensity of spontaneous pain as well as tactile allodynia was assessed using a visual analog scale (VAS). When the VAS score for spontaneous pain was decreased by more than 50%, the patient was classified as a responder.RESULTS: Five, 6, and 6 patients responded to ketamine, lidocaine, and ATP, respectively. In 6 ATP responders, pain relief developed slowly and lasted for 9 (median) h (range: 3-72 h). All 5 ketamine responders and only 1 of 7 ketamine nonresponders responded to ATP (5/5 vs 1/7, P < 0.05, chi2 test) whereas 2 of 6 responders to lidocaine and 4 of 6 nonresponders to lidocaine responded to ATP (2/6 vs 4/6, P > 0.05). The ketamine responders responded to ATP more often than did the lidocaine responders (5/5 vs 2/6, P < 0.05).CONCLUSION: Intravenous ATP exerted slowly developing and long-lasting analgesic effects in half of patients with PHN. Patients with ketamine-responsive PHN were likely to respond to ATP.