Teal Stephanie B, Craven Winfield M
Department of Obstetrics and Gynecology, University of Colorado Health Sciences Center, Denver, Colorado 80262, USA.
Obstet Gynecol. 2006 Feb;107(2 Pt 2):470-2. doi: 10.1097/01.AOG.0000164072.91339.9e.
The NuvaRing is a soft, flexible, ring-shaped vaginal contraceptive device that is placed by the user herself. Incorrect placement has not been described, because any intravaginal position allows appropriate hormonal delivery through the vaginal mucosa.
A 22-year-old otherwise healthy woman presented with 2 months of urinary urgency, frequency, and pelvic pain, which were unresponsive to antibiotic therapy. Her symptoms began immediately after placement of a NuvaRing vaginal contraceptive device, which she was subsequently unable to locate. Thorough evaluation revealed the ring in the urinary bladder.
Bladder or urethral foreign body should be considered in the evaluation of patients with chronic cystitis, especially if the patient uses vaginal medical devices. Intravesicular placement of a device may occur even without psychiatric or physical comorbidities.
NuvaRing是一种柔软、可弯曲的环形阴道避孕装置，由使用者自行放置。尚未有关于放置不当的描述，因为任何阴道内位置都能通过阴道黏膜实现适当的激素释放。
一名22岁、其他方面健康的女性出现了2个月的尿急、尿频和盆腔疼痛症状，抗生素治疗无效。她的症状在放置NuvaRing阴道避孕装置后立即出现，随后她无法找到该装置。全面评估发现环在膀胱内。
在评估慢性膀胱炎患者时应考虑膀胱或尿道异物，特别是如果患者使用阴道医疗装置。即使没有精神或身体合并症，装置也可能发生膀胱内放置。
