Adverse effects of chronic nitrofurantoin therapy in women with recurrent urinary tract infections in an outpatient setting.

PURPOSE: To review the frequency of adverse events reported with nitrofurantoin (NF) in perimenopausal and menopausal women on prolonged daily prophylaxis in an outpatient setting. METHODS: Electronic medical records of women aged 50-95 prescribed NF by 2 primary urology providers for at least 3 consecutive months from 2006 to 2018 were retrospectively reviewed. Demographics, reason for the initiation, dose and duration of therapy, explanation of therapy interruptions, occurrence of adverse events, comorbid conditions, and relevant lab and imaging results were recorded. The number of months on prolonged therapy were summed. RESULTS: Of the 221 patients included, 167 (77%) were prescribed 100 mg of NF daily with a mean duration of therapy of 1.5 years. The most common indication for therapy was recurrent urinary tract infection prophylaxis. Breakthrough urinary tract infections developed in 88 (40%) patients on prolonged NF therapy but only 10 were not restarted on NF. Four patients (1.8%) were determined to have pulmonary adverse events and 1 (0.4%) developed elevated liver function tests. CONCLUSION: In peri-menopausal and menopausal women, the risks and benefits of chronic NF therapy should be weighed by the clinician and patient prior to prescribing long term NF. Patients must be educated about the potential NF toxicities and clinically monitored for signs and symptoms of potential adverse events while on chronic NF therapy.

Increasing Endometrial Thickness Beyond 8 mm Does Not Alter Clinical Pregnancy Rate After Single Euploid Embryo Transfer.

The aim of this study was to investigate if variation in endometrial thickness affects clinical pregnancy and live birth rates among patients undergoing single euploid embryo transfer (SET). A retrospective review of IVF cycles performed at a single private fertility institution between 2015 and 2020 was performed. Patients with normal uterine anatomy undergoing their first SET of a euploid embryo undergoing their first cycle at the center were included, for a total of 796 cycles. Endometrial thickness was measured by transvaginal ultrasound following 10-14 days of estradiol exposure. Specific infertility diagnoses did not significantly impact endometrial lining thickness with means across diagnoses ranging from 9.3 to 11.0 mm. Endometrial thickness was grouped into five categories: < 8 mm, 8-10 mm, 10-13 mm, 13-15 mm, and ≥ 15 mm. Using 8-10 mm as the reference group, the odds ratio of live birth was 0.5, 1.22, 1.05, and 1.05 for < 8 mm, 10-13 mm, 13-15 mm, and ≥ 15 mm groups, respectively. Risk of first trimester miscarriage was equivalent across groups. There was a trend toward an increased rate of biochemical pregnancies in patients with a < 8 mm and ≥ 15 mm endometrium; however, this was not statistically significant. The clinical pregnancy and live birth rate were lowest in patients with < 8-mm endometrial thickness. For single euploid embryo transfers, an endometrial lining greater than or equal to 8 mm confers optimal live birth rates following a medicated FET cycle. These data confirm the findings of prior studies in fresh embryo transfers without the confounders of supraphysiologic ovarian hormone concentrations and genetically untested embryos.