1. Paracetamol (Acetaminophen) in stroke 2 (PAIS 2): Protocol for a randomized, placebo-controlled, double-blind clinical trial to assess the effect of high-dose paracetamol on functional outcome in patients with acute stroke and a body temperature of 36.5 degrees C or above
- Author
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Ritu Saxena, Ale Algra, Heleen M. den Hertog, Frank Jan de Jong, Diederik W.J. Dippel, Hester F. Lingsma, Peter J. Koudstaal, H. Maarten A. van Gemert, A. H C M L Tobien Schreuder, Inger R. de Ridder, Jordie H. van Tuijl, Annemieke Ruitenberg, L. Jaap Kappelle, E. Lisette Maasland, Peter Oomes, H. Bart van der Worp, Neurology, and Public Health
- Subjects
Male ,Antipyretics ,Fever ,Placebo ,Body Temperature ,law.invention ,Clinical Protocols ,Double-Blind Method ,Randomized controlled trial ,law ,Modified Rankin Scale ,medicine ,Humans ,Multicenter Studies as Topic ,Stroke ,Acetaminophen ,Randomized Controlled Trials as Topic ,Intracerebral hemorrhage ,Dose-Response Relationship, Drug ,business.industry ,digestive, oral, and skin physiology ,Odds ratio ,medicine.disease ,Clinical trial ,Neurology ,Anesthesia ,Female ,business ,medicine.drug - Abstract
Rationale In the first hours after stroke onset, subfebrile temperatures and fever have been associated with poor functional outcome. In the first Paracetamol (Acetaminophen) in Stroke trial, a randomized clinical trial of 1400 patients with acute stroke, patients who were treated with high-dose paracetamol showed more improvement on the modified Rankin Scale at three-months than patients treated with placebo, but this difference was not statistically significant. In the 661 patients with a baseline body temperature of 37·0°C or above, treatment with paracetamol increased the odds of functional improvement (odds ratio 1·43; 95% confidence interval: 1·02–1·97). This relation was also found in the patients with a body temperature of 36·5°C or higher (odds ratio 1·31; 95% confidence interval 1·01–1·68). These findings need confirmation. Aim The study aims to assess the effect of high-dose paracetamol in patients with acute stroke and a body temperature of 36·5°C or above on functional outcome. Design The Paracetamol (Acetaminophen) In Stroke 2 trial is a multicenter, randomized, double-blind, placebo-controlled clinical trial. We use a power of 85% to detect a significant difference in the scores on the modified Rankin Scale of the paracetamol group compared with the placebo group at a level of significance of 0·05 and assume a treatment effect of 7%. Fifteen-hundred patients with acute ischemic stroke or intracerebral hemorrhage and a body temperature of 36·5°C or above will be included within 12 h of symptom onset. Patients will be treated with paracetamol in a daily dose of six-grams or matching placebo for three consecutive days. The Paracetamol (Acetaminophen) In Stroke 2 trial has been registered as NTR2365 in The Netherlands Trial Register. Study outcomes The primary outcome will be improvement on the modified Rankin Scale at three-months as analyzed by ordinal logistic regression. Discussion If high-dose paracetamol will be proven effective, a simple, safe, and extremely cheap therapy will be available for many patients with acute stroke worldwide.
- Published
- 2015