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Single dose oral diclofenac for acute postoperative pain in adults

Single dose oral diclofenac for acute postoperative pain in adults

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In the 15 <strong>in</strong>cluded studies, a total of 1512 participants were treatedwith <strong>diclofenac</strong> and 793 with placebo.Diclofenac 25 mg was used <strong>in</strong> four studies (Hersh 2004; Kubitzek2003; Nelson 1994; Olson 1997), <strong>diclofenac</strong> 50 mg <strong>in</strong> 11 studies(13 treatment arms) (Ahlstrom 1993; Bakshi 1992; Bakshi 1994;Chang 2002; Cooper 1996; Herbertson 1995; Hersh 2004; Hofele2006; Mehlisch 1995; Nelson 1994; Olson 1997), <strong>diclofenac</strong>75 mg <strong>in</strong> one study (Torres 2004), and <strong>diclofenac</strong> 100 mg <strong>in</strong>seven studies (eight treatment arms) (Desjard<strong>in</strong>s 2004; Herbertson1995; Hersh 2004; Mehlisch 1995; Nelson 1994; Olson 1997;Zuniga 2004).Thirteen studies used <strong>diclofenac</strong> tablets (Bakshi 1992; Bakshi1994; Chang 2002; Cooper 1996; Desjard<strong>in</strong>s 2004; Herbertson1995; Mehlisch 1995; Nelson 1994; Olson 1997), three used adispersible (dr<strong>in</strong>kable) preparation (Ahlstrom 1993; Bakshi 1994;Hofele 2006), and one used a softgel preparation (Zuniga 2004).Three studies used <strong>diclofenac</strong> sodium (Na) (Chang 2002; Cooper1996; Desjard<strong>in</strong>s 2004), seven used <strong>diclofenac</strong> potassium (K) (Herbertson 1995; Hersh 2004; Hofele 2006; Kubitzek 2003;Mehlisch 1995; Nelson 1994; Olson 1997), two compared thesame <strong>dose</strong> of Na and K salt preparations (Bakshi 1992; Zuniga2004), one used the free acid (Bakshi 1994) and two did not specifythe salt preparation used (Ahlstrom 1993; Torres 2004).Eleven studies were <strong>in</strong> participants with dental <strong>pa<strong>in</strong></strong> follow<strong>in</strong>g surgicalextraction of one or more impacted third molars (Ahlstrom1993; Bakshi 1992; Bakshi 1994; Chang 2002; Cooper 1996;Hersh 2004; Hofele 2006; Kubitzek 2003; Mehlisch 1995; Nelson1994; Zuniga 2004), and one each <strong>in</strong> participants with <strong>pa<strong>in</strong></strong> follow<strong>in</strong>gbunionectomy (Desjard<strong>in</strong>s 2004), general gynaecologicalsurgery (Herbertson 1995), post episiotomy (Olson 1997), and<strong>in</strong>gu<strong>in</strong>al hernia (Torres 2004).Trial duration was 6 hours <strong>in</strong> seven studies (Ahlstrom 1993; Bakshi1992; Bakshi 1994; Cooper 1996; Hersh 2004; Kubitzek 2003;Nelson 1994), eight hours <strong>in</strong> three studies (Herbertson 1995;Mehlisch 1995; Olson 1997), 24 hours <strong>in</strong> four studies (Chang2002; Desjard<strong>in</strong>s 2004; Hofele 2006; Zuniga 2004), and 36 hours<strong>in</strong> one study (Torres 2004).Risk of bias <strong>in</strong> <strong>in</strong>cluded studiesMethodological quality of <strong>in</strong>cluded studiesAll <strong>in</strong>cluded studies were both randomised and double bl<strong>in</strong>d. Fivestudies were given a quality score of five (Chang 2002; Desjard<strong>in</strong>s2004; Hersh 2004; Hofele 2006; Zuniga 2004), six a score offour (Ahlstrom 1993; Bakshi 1994; Kubitzek 2003; Nelson 1994;Mehlisch 1995; Olson 1997) and four a score of three (Bakshi1992; Cooper 1996; Herbertson 1995; Torres 2004).Full details are <strong>in</strong> the ’Characteristics of <strong>in</strong>cluded studies’ table.Effects of <strong>in</strong>terventionsAll 15 <strong>in</strong>cluded studies provided some data <strong>for</strong> quantitative analysis.Fourteen trials contributed data to the primary efficacy outcome.One trial look<strong>in</strong>g at 75 mg <strong>dose</strong> (Torres 2004) did not reportbasel<strong>in</strong>e <strong>pa<strong>in</strong></strong> <strong>in</strong>tensity, so that SPID could not be calculated.Number of participants achiev<strong>in</strong>g at least 50% <strong>pa<strong>in</strong></strong>relief (see Summary of results A)Diclofenac 25 mg versus placeboFour studies with 502 participants provided data (Hersh 2004;Kubitzek 2003; Nelson 1994; Olson 1997) (please see Table 1 andFigure 1).Figure 1.Forest plot of comparison: 1 Diclofenac 25 mg v placebo, outcome: 1.1 Participants with at least50% <strong>pa<strong>in</strong></strong> relief over 4 to 6 hours.<strong>S<strong>in</strong>gle</strong> <strong>dose</strong> <strong>oral</strong> <strong>diclofenac</strong> <strong>for</strong> <strong>acute</strong> <strong>postoperative</strong> <strong>pa<strong>in</strong></strong> <strong>in</strong> <strong>adults</strong> (Review)Copyright © 2011 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.6

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