Lidocaine nerve block reduces pain during IUD insertion

September 11, 2017

(HealthDay)—A 10-mL 1 percent lidocaine paracervical nerve block reduces pain during intrauterine device (IUD) insertion, according to a study published online Sept. 5 in Obstetrics & Gynecology.

Aletha Y. Akers, M.D., M.P.H., from Children's Hospital of Philadelphia, and colleagues randomized 95 adolescents and young women (ages 14 to 22) receiving a 13.5-mg levonorgestrel IUD to either a 10-mL 1 percent lidocaine paracervical block or a sham block (1 cm depression of the vaginal epithelium at paracervical block sites with a wooden cotton-tipped applicator).

The researchers found that 79 percent of the study participants previously used contraception. After IUD insertion, the median visual analog scale score was significantly lower in the block group compared with the sham block group (30 versus 71.5).

"The 1 percent paracervical block may be useful for reducing patient-reported pain during IUD , but its use must be balanced with a careful consideration of the risks associated with this nerve blockade," conclude the authors.

Several authors report financial ties to the pharmaceutical industry, and one trains health care providers to insert the Nexplanon contraceptive device as a consultant for Merck. Bayer Healthcare Inc. provided funding for the study.

Explore further: Naproxen sodium doesn't reduce pain with IUD insertion

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