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ABSTRACT: Introduction
This study is part of the registrational program for intravenously administered (IV) tramadol in the USA and compared the analgesic benefit and tolerability of two doses of IV tramadol (50 mg and 25 mg) to placebo in adult patients undergoing bunionectomy, an orthopedic surgical model.Methods
This was a phase 3, multicenter, double-blind, three-arm, randomized, placebo-controlled, multiple-dose, parallel-group trial to evaluate IV tramadol in the management of postoperative pain following bunionectomy. Eligible patients were randomized (1:1:1 ratio) to IV tramadol 50 mg, 25 mg, or placebo. Primary endpoint was summary of pain intensity differences over 48 h (SPID48). Key secondary endpoints included SPID24, total consumption of rescue analgesia, and patient global assessment of efficacy (PGA). Safety assessments included treatment emergent adverse events (TEAEs), clinical laboratory tests, vital signs, and electrocardiograms (ECGs). Assessment of the dose-response was an important objective of the study.Results
The study established a dose response, with IV tramadol 50 mg demonstrating statistically significant benefit (p?ConclusionIV tramadol 50 mg was effective and well tolerated as treatment for postoperative pain following bunionectomy surgery, while IV tramadol 25 mg, although well tolerated, was judged an ineffective dose for the treatment of pain in this setting. IV tramadol 50 mg was further developed in the registrational program for the USA.Trial registration
ClinicalTrials.gov identifier, NCT03290378.
SUBMITTER: Singla NK
PROVIDER: S-EPMC7648778 | biostudies-literature | 2020 Dec
REPOSITORIES: biostudies-literature
Singla Neil K NK Pollak Richard R Gottlieb Ira I Leiman David D Minkowitz Harold H Zimmerman John J Harnett Mark M Ryan Michael M Lu Lucy L Reines Scott S
Pain and therapy 20200718 2
<h4>Introduction</h4>This study is part of the registrational program for intravenously administered (IV) tramadol in the USA and compared the analgesic benefit and tolerability of two doses of IV tramadol (50 mg and 25 mg) to placebo in adult patients undergoing bunionectomy, an orthopedic surgical model.<h4>Methods</h4>This was a phase 3, multicenter, double-blind, three-arm, randomized, placebo-controlled, multiple-dose, parallel-group trial to evaluate IV tramadol in the management of postop ...[more]