RESUMEN
OBJECTIVE: We compared pain and the ease of insertion of two different types of intrauterine devices (IUDs; the levonorgestrel intrauterine systems 52 mg (LNG-IUS 52 mg) and the copper-bearing IUD [TCu380A]) among nulligravidas and parous women with and without caesarean delivery. METHODS: A cross-sectional study assessed pain referred by women and ease of insertion of the two IUDs models. We applied a visual analogue scale (VAS) to assess pain, while the ease of insertion was defined by healthcare professionals. RESULTS: We assessed 1076 women, including 334 nulligravidas and 566 parous women who had had at least one caesarean delivery and 176 women with history of only vaginal delivery. Regarding pain at IUD placement, 26 (2.5%) women reported no pain, 167 (16.4%) light pain, 319 (31.3%) moderate and 506 (49.7%) intense pain. The highest scores for pain were reported by nulligravidas (67.2%, p = 0.001), while the mean pain score was higher in the LNG-IUS 52 mg group. Difficulties reported by healthcare providers were more frequent in the nulligravidas (21.2%) and women with previous caesarean delivery (16.9%). CONCLUSIONS: Our findings suggested differences between the two IUDs tested, with higher pain associated with the LNG-IUS 52 mg, and highlights the need for pain management, mainly among nulligravida and women with history of caesarean delivery.SHORT CONDENSATIONIntense pain at insertion was more related to nulligravida than parous women and more pain with placement of LNG-IUS 52 mg IUDs than TCu380A IUDs. Nevertheless, our results confirmed that ease of IUD placement was between 80% to 90% of all insertions, being more common in parous women without previous caesarean delivery.