title: Comparison of the onset and duration of the analgesic effect of dipyrone, 1 or 2 g, by the intramuscular or intravenous route, in acute renal colic.
abstract: In a double-blind, double-dummy randomized controlled clinical trial, the onset and duration of the analgesic effect of dipyrone, 1 or 2 g, and diclofenac sodium, 75 mg, by either the i.m. or the i.v. route were compared in 293 patients (aged 18-70 years) with acute renal colic. A level of > or = 50 mm on the 100-mm visual analogue scale was required for inclusion in the study. Patients were randomly allocated to six treatment groups, receiving dipyrone 1 g i.m., dipyrone 1 g i.v., dipyrone 2 g i.m.;, dipyrone 2 g i.v., diclofenac sodium 75 mg i.m.; and diclofenac sodium 75 mg i.v., respectively. Evaluations were performed at 10, 20, 30, and 60 min and 2, 4, and 6 h after treatment (time 0). Primary efficacy end points included course of pain, total pain, percentage of patients with a pain improvement of 50% or more at each evaluation time, pain intensity evaluated by the investigator on a 0-3 scale, and differences in pain intensity. The analgesic response was more marked and prolonged among patients receiving dipyrone 2 g i.m. or dipyrone 2 g i.v. There were no significant differences between dipyrone 1 g and diclofenac sodium 75 mg, by either the i.m. or the i.v. route. All treatment regimens were well tolerated.
authors.affiliation: Hospital Clínico Universitario, Salamanca, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Muriel-Villoria
authors.forename: E
authors.initials: E
authors.lastname: Zungri-Telo
authors.forename: M
authors.initials: M
authors.lastname: Díaz-Curiel
authors.forename: M
authors.initials: M
authors.lastname: Fernández-Guerrero
authors.forename: J
authors.initials: J
authors.lastname: Moreno
authors.forename: J
authors.initials: J
authors.lastname: Puerta
authors.forename: P
authors.initials: P
authors.lastname: Ortiz
mesh_terms: D000328:Adult; D004008:Diclofenac / Q000494:pharmacology; D004177:Dipyrone / Q000009:adverse effects* / Q000627:therapeutic use*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D007275:Injections, Intravenous; D007668:Kidney / Q000187:drug effects*; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000188:drug therapy*; D013997:Time Factors
chemical_list: D004008:Diclofenac; D004177:Dipyrone