#405 Taking the “ouch” out of IUD insertion: Can topical lidocaine help?
Reading Tools for Practice Article can earn you MainPro+ Credits
Join NowAlready a CFPCLearn Member? Log in
- Results statistically different unless indicated. Scores reported on 10-point scale (lower=better). Mostly multiparous women.
- Topical lidocaine-prilocaine (example: EMLA® 5% cream 2mL applied with cotton swab 5 minutes before procedure) versus placebo:
- Systematic review [2 randomized, controlled trials (RCTs), 212 women]:1-2
- Pain (tenaculum placement), mean difference: 2.3-2.8 points better than placebo.
- Pain (copper-IUD insertion), mean difference: 2-2.8 points better than placebo.
- Additional RCT, 140 women:3
- Mean pain (tenaculum placement): 3 versus 4.5 (placebo).
- Mean pain (levonorgestrel-IUD insertion): 2.1 versus 3.7 (placebo).
- Patient satisfaction (10-point scale, higher=better): 8.4 versus 6.5 (placebo).
- Vaginal irritation not reported.
- Systematic review [2 randomized, controlled trials (RCTs), 212 women]:1-2
- Lidocaine 10% spray (example: 4 puffs to cervix 3 minutes prior to procedure) versus placebo:
- RCT, 200 women:4
- Median pain during “procedure” (copper-IUD): 1 versus 3 (placebo).
- Proportion of women with pain score≥4: 6% versus 41% (placebo), Number Needed to Treat (NNT)=3.
- RCT, 124 women:5
- Mean pain (tenaculum placement): 0.8 versus 2.4 (placebo).
- Mean pain (copper-IUD insertion): 3 versus 5 (placebo).
- Proportion of women with pain score≥4 (IUD insertion): 39% versus 61% (placebo), NNT=5.
- Vaginal irritation: 55% versus 1.6%.
- RCT, 200 women:4
- Topical lidocaine 2% (various methods/sites, example: cotton swab, angiocatheter) versus placebo:
- Systematic review (2-3 RCTs, 345-409 women),2 additional RCTs (59-220 women):6-9 tenaculum placement/IUD insertion pain: no difference. Exception: pain during tenaculum placement 3.2 versus 5.6 (placebo) in 1 RCT (59 women).9
- Adverse events: No difference. Vaginal irritation: Not reported.
- Systematic review (2-3 RCTs, 345-409 women),2 additional RCTs (59-220 women):6-9 tenaculum placement/IUD insertion pain: no difference. Exception: pain during tenaculum placement 3.2 versus 5.6 (placebo) in 1 RCT (59 women).9
- NSAIDs, misoprostol, inhaled nitric oxide, topical nitroprusside or topical nitroglycerin: inconsistent to no effect.1,2 Paracervical block: Mixed results, injection itself painful.6 Methoxyflurane: Not studied for IUDs.10
- Guidelines support topical lidocaine-prilocaine, but do not mention lidocaine spray.11
- Minimum clinically important difference for pain is 1.3-2 (10-point scale).8







