Effect of Paracervical Block Volume on Pain Control for Dilation and Aspiration: A Randomized Controlled Trial.

OBJECTIVE: To compare pain scores during office dilation and aspiration between low-volume and high-volume paracervical block of the same dose. METHODS: We conducted a multi-site, randomized, single-blind, placebo-controlled trial from October 2018 to December 2020. We randomized participants presenting for office dilation and aspiration under minimal sedation stratified by procedural indication (induced abortion vs early pregnancy loss) to a 20-mL buffered 1% lidocaine paracervical block or a 40-mL buffered 0.5% lidocaine paracervical block, both with two units of vasopressin in a standardized technique. To detect a 15-mm or greater difference in pain at the time of cervical dilation with 80% power and a two-sided alpha of 0.05, a total of 104 participants was required. The study was also powered to detect a 20-mm or greater difference in pain at the time of cervical dilation within each stratum (induced abortion and early pregnancy loss). The primary outcome was pain with cervical dilation on a 100-mm visual analog scale in the overall cohort. Secondary outcomes included pain with cervical dilation within each stratum. We used a Wilcoxon rank-sum test to compare median pain scores between groups. RESULTS: We enrolled 114 participants. There was no difference in median pain scores between low-volume and high-volume groups during dilation (62 mm vs 59 mm, P=.94), aspiration (69.5 mm vs 70 mm, P=.47), postprocedure (25 mm vs 25 mm, P=.76), or overall (60 mm vs 60 mm, P=.23). Stratified by indication, there were no significant differences in scores at any time point between the low-volume and high-volume paracervical block groups. There was decreased overall pain in patients with induced abortion who received the higher volume paracervical block, though this did not reach statistical significance (67.5 mm vs 60.5 mm, P=.08). Pain during paracervical block administration was similar between groups (55 mm vs 45 mm, P=.24) and there was no difference in occurrence of side effects (P=.63). CONCLUSION: We found no difference in pain with cervical dilation among participants who received the low-volume compared with high-volume paracervical block when studied alone. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov, NCT03636451.

Independent Contributions of Nocturnal Hot Flashes and Sleep Disturbance to Depression in Estrogen-Deprived Women.

CONTEXT: Women are at increased risk for mood disturbance during the menopause transition. Hot flashes (HFs), sleep disruption, and fluctuating estradiol levels correlate with menopause-associated depression but co-occur, making cause and effect relationships difficult to disentangle. OBJECTIVE: Using a GnRH agonist (GnRHa) experimental model, we investigated whether depressive symptoms are associated with HFs and/or are explained by concomitant sleep fragmentation in the absence of estradiol fluctuation. DESIGN AND INTERVENTION: Depressive symptoms, objective polysomnographic sleep parameters, subjective sleep quality, serum estradiol, and HFs were assessed before and 4 weeks after open-label depot GnRHa (leuprolide 3.75-mg) administration. SETTING: Academic medical center. PARTICIPANTS: Twenty-nine healthy nondepressed premenopausal volunteers (mean age, 27.3 years). RESULTS: Serum estradiol was rapidly and uniformly suppressed. HFs developed in 69% of the subjects. On univariate analysis, worsening of mood was predicted by increases in time in light sleep (stage N1), number of transitions to wake, non-REM arousals, subjective sleep quality, and reductions in perceived sleep efficiency (all P < .045), as well as the number of nighttime (P = .006), but not daytime (P = .28), HFs reported. In adjusted models, the number of nighttime HFs reported, increases in non-REM arousals, time in stage N1, transitions to wake, and reduced sleep quality remained significant predictors of mood deterioration (P ≤ .05). CONCLUSIONS: Depressive symptoms emerged after estradiol withdrawal in association with objectively and subjectively measured sleep disturbance and the number of nighttime, but not daytime, HFs reported. Results suggest that sleep disruption and perceived nighttime HFs both contribute to vulnerability to menopause-associated depressive symptoms in hypoestrogenic women.

A gonadotropin-releasing hormone agonist model demonstrates that nocturnal hot flashes interrupt objective sleep.

OBJECTIVES: Sleep interruption is often reported by women with hot flashes and night sweats (or vasomotor symptoms, VMS). Although women report that VMS awaken them, polysomnography (PSG) studies have not consistently supported this contention. DESIGN: We mimicked menopause using a gonadotropin-releasing hormone agonist (GnRHa) to investigate whether VMS increase awakenings and wake after sleep onset (WASO). VMS, serum estradiol, and at-home PSGs (two pretreatment, two posttreatment) were measured before and after 4 weeks on GnRHa. Regression models were used to determine the effect of increasing VMS frequency on awakenings and WASO, as measured objectively and subjectively. PARTICIPANTS: Twenty-nine healthy women (mean 27.3 y). SETTING: Academic medical center. INTERVENTIONS: Depot GnRHa (leuprolide 3.75-mg). RESULTS: Serum estradiol was rapidly and uniformly suppressed on GnRHa. Persistent VMS were reported by 69% of women. The number of nighttime VMS correlated directly with the degree of sleep disturbance. Each additional reported nighttime VMS was associated with a 62% increase from baseline in PSG-measured WASO (P = 0.007), a 3% increase in awakenings (P = 0.05), and 6% increase in %N1 sleep (P = 0.02). Nighttime VMS were also associated with increased perceived WASO (312%; P = 0.02), awakenings (16%; P = 0.007), Insomnia Severity Index (P = 0.03), and Pittsburgh Sleep Quality Index (P = 0.03) scores, and decreased perceived sleep efficiency (P = 0.01). Objectively recorded nighttime VMS correlated with PSG-measured WASO (rs = 0.45, P = 0.02). CONCLUSIONS: This menopause model demonstrates that nighttime vasomotor symptoms correlate with increased sleep fragmentation. These findings are consistent with a specific contribution of vasomotor symptoms to polysomnography-measured sleep interruption suggesting that nighttime vasomotor symptoms interrupt sleep in the setting of menopause.

Adverse effects of induced hot flashes on objectively recorded and subjectively reported sleep: results of a gonadotropin-releasing hormone agonist experimental protocol.

OBJECTIVE: The impact of hot flashes on sleep is of great clinical interest, but results are inconsistent, especially when both hot flashes and sleep are measured objectively. Using objective and subjective measurements, we examined the impact of hot flashes on sleep by inducing hot flashes with a gonadotropin-releasing hormone agonist. METHODS: The gonadotropin-releasing hormone agonist leuprolide was administered to 20 healthy premenopausal volunteers without hot flashes or sleep disturbances. Induced hot flashes were assessed objectively (skin conductance monitor) and subjectively (daily diary) during 1-month follow-up. Changes from baseline in objective sleep quality (actigraphy) and subjective sleep quality (Pittsburgh Sleep Quality Index) were compared between women who developed and women who did not develop objective hot flashes and, in parallel analyses, subjective hot flashes. RESULTS: New-onset hot flashes were recorded in 14 (70%) women and reported by 14 (70%) women (80% concordance). Estradiol was universally suppressed. Objective sleep efficiency worsened in women with objective hot flashes and improved in women without objective hot flashes (median decrease, 2.6%; median increase, 4.2%; P = 0.005). Subjective sleep quality worsened more in those with subjective hot flashes than in those without subjective hot flashes (median increase in Pittsburgh Sleep Quality Index, 2.5 vs 1.0; P = 0.03). Objective hot flashes were not associated with subjective sleep quality, nor were subjective symptoms linked to objective sleep measures. CONCLUSIONS: This experimental model of induced hot flashes demonstrates a causal relationship between hot flashes and poor sleep quality. Objective hot flashes result in worse objective sleep efficiency, whereas subjective hot flashes worsen perceived sleep quality.

Omega-3 fatty acids for major depressive disorder associated with the menopausal transition: a preliminary open trial.

OBJECTIVES: We sought to obtain preliminary data regarding the efficacy of omega-3 fatty acids for major depressive disorder associated with the menopausal transition. Secondary outcomes were assessed for vasomotor symptoms (or hot flashes). METHODS: After a single-blind placebo lead-in, participants received 8 weeks of treatment with open-label omega-3 fatty acid capsules (eicosapentaenoic acid and docosahexaenoic acid, 2 g/d). The Montgomery-Asberg Depression Rating Scale (MADRS) was the primary outcome measure. Hot flashes were monitored prospectively using daily diaries and the Hot Flash Related Daily Interference Scale. Blood samples for plasma pretreatment and posttreatment essential fatty acid assays were obtained. Because of the small sample size, data were analyzed using nonparametric techniques. RESULTS: Of 20 participants treated with omega-3 fatty acids, 19 (95%) completed the study. None discontinued because of adverse effects. The pretreatment and final mean MADRS scores were 24.2 and 10.7, respectively, reflecting a significant decrease in MADRS scores (P < 0.0001). The response rate was 70% (MADRS score decrease of ≥50%), and the remission rate was 45% (final MADRS score of ≤). Responders had significantly lower pretreatment docosahexaenoic acid levels than nonresponders did (P = 0.03). Hot flashes were present in 15 (75%) participants. Among those with hot flashes at baseline, the number of hot flashes per day improved significantly from baseline (P = 0.02) and Hot Flash Related Daily Interference Scale scores decreased significantly (P = 0.006). CONCLUSIONS: These data support further study of omega-3 fatty acids for major depressive disorder and hot flashes in women during the menopausal transition.