Predicting Pelvic Pain After Endometrial Ablation: Which Preoperative Patient Characteristics Are Associated?

May S Thomassee, Thomassee MS, Curlin H, H. Curlin, Howard Curlin, Yunker A, Amanda Yunker, Anderson TL, Ted L Anderson
Journal of minimally invasive gynecology · 2013 · vol. 20(5) , pp. 642–647 · doi:10.1016/j.jmig.2013.04.006 · PMID:23791400 · W2140521418
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This study identified preoperative patient characteristics associated with pelvic pain following endometrial ablation to improve patient selection and outcomes.

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Abstract

Study objectiveTo determine which patient characteristics are associated with an increased risk of postablation pelvic pain.DesignCanadian Task Force classification II-2.MethodsData were collected from a retrospective cohort of patients who underwent endometrial ablation between January 2006 and September 2010 at a large academic medical center. Patients were identified via Current Procedural Terminology codes (58563, 58353, and 58356) for any type of endometrial ablation (rollerball or global); the sample size was 437 women. Multiple conditions and comorbidities were recorded for each patient. Bivariate analysis of patient demographics and the incidence of pain after endometrial ablation were evaluated using the chi square, Fisher exact, and independent t tests where appropriate. A final multivariate analysis with logistic regression was conducted to determine the exact patient characteristics that are associated with pelvic pain after endometrial ablation.ResultsOf 437 women who underwent endometrial ablation, 20.8% reported pain after their ablation. Patients were followed for up to 6.5 years postablation with a median follow-up of 794 days. The median number of days for the development of pain after ablation was 301 days, with 75% of patients who developed pain reporting it within approximately 2 years of their procedure. The median time to hysterectomy for those with pain was 570 days. Other postablation treatments included hormonal therapies in 9.4% of the total population. A total of 20.8% of patients reported postablation pelvic pain, but only 6.3% underwent subsequent hysterectomy for that indication. Preablation patient characteristics significantly associated with the development of postablation pain include dysmenorrhea (aOR = 1.73), smoking status (aOR = 2.31), prior tubal ligation (aOR = 1.68), and age less than 40 (aOR 1.90). Although not statistically significant, a diagnosis of endometriosis appears to be related to postablation pain (aOR = 2.24). Adenomyosis (suggested on ultrasound) and body mass index associations were not statistically significant. A patient with all 4 risk factors for postablation pain (i.e., dysmenorrhea, smoking, prior tubal ligation, and <40 years old) has a 53% (95% confidence interval, 0.40-0.66) chance of experiencing postablation pain.ConclusionThe observed incidence of pelvic pain is 20.8% after endometrial ablation and is more frequently observed in women with preablation dysmenorrhea, tobacco use, prior tubal ligation, age less than 40, and possibly endometriosis. One should consider these preexisting conditions when counseling patients regarding outcome expectations after an endometrial ablation procedure.

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Condition tags

chronic_pelvic_pain

MeSH descriptors

Endometrial Ablation Techniques Pelvic Pain Uterine Hemorrhage Adult Endometrial Ablation Techniques Endometrial Ablation Techniques Female Humans Incidence Middle Aged Pelvic Pain Pelvic Pain Retrospective Studies Risk Factors Treatment Outcome Uterine Hemorrhage

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