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Background: Hysterectomy, oophorectomy, and tubal ligation are common surgical procedures. The literature regarding cardiovascular disease (CVD) risk after these surgeries has focused on oophorectomy with limited research on hysterectomy or tubal ligation. Materials and Methods: Participants in the Nurses' Health Study II ( n = 116,429) were followed from 1989 to 2017. Self-reported gynecologic surgery was categorized as follows: no surgery, hysterectomy alone, hysterectomy with unilateral oophorectomy, and hysterectomy with bilateral oophorectomy. We separately investigated tubal ligation alone. The primary outcome was CVD based on medical-record confirmed fatal and nonfatal myocardial infarction, fatal coronary heart disease, or fatal and nonfatal stroke. Our secondary outcome expanded CVD to include coronary revascularization (coronary artery bypass graft surgery, angioplasty, stent placement). Cox proportional hazard models were used to calculate hazard ratios (HR) and 95% confidence intervals (CIs) and were adjusted a priori for confounding factors. We investigated differences by age at surgery (≤50, >50) and menopausal hormone therapy usage. Results: At baseline, participants were on average, 34 years old. During 2,899,787 person-years, we observed 1,864 cases of CVD. Hysterectomy in combination with any oophorectomy was associated with a greater risk of CVD in multivariable-adjusted models (HR hysterectomy with unilateral oophorectomy:1.40 [95% CI: 1.08–1.82]; HR hysterectomy with bilateral oophorectomy:1.27 [1.07–1.51]). Hysterectomy alone, hysterectomy with oophorectomy, and tubal ligation were also associated with an increased risk of combined CVD and coronary revascularization (HR hysterectomy alone: 1.19 [95% CI: 1.02–1.39]; HR hysterectomy with unilateral oophorectomy: 1.29 [1.01–1.64]; HR hysterectomy with bilateral oophorectomy: 1.22 [1.04–1.43]; HR tubal ligation: 1.16 [1.06–1.28]). The association between hysterectomy/oophorectomy and CVD and coronary revascularization risk varied by age at gynecologic surgery, with the strongest association among women who had surgery before age 50 years. Conclusion: Our findings suggest that hysterectomy, alone or in combination with oophorectomy, as well as tubal ligation, may be associated with an increased risk of CVD and coronary revascularization. These findings extend previous research finding that oophorectomy is associated with CVD.

Background Delayed cold storage of room temperature platelets may extend shelf life from 5 to 14 days. The study hypothesized that the use of delayed cold-stored platelets in cardiac surgery would be associated with decreased postoperative platelet count increments but similar transfusion and clinical outcomes compared to room temperature-stored platelets. Methods This is an observational cohort study of adults transfused with platelets intraoperatively during elective cardiac surgery between April 2020 and May 2021. Intraoperative platelets were either room temperature-stored or delayed cold-stored based on blood bank availability rather than clinical features or provider preference. Differences in transfusion and clinical outcomes, including a primary outcome of allogenic transfusion exposure in the first 24 h postoperatively, were compared between groups. Results A total of 713 patient encounters were included: 529 (74%) room temperature-stored platelets and 184 (26%) delayed cold-stored platelets. Median (interquartile range) intraoperative platelet volumes were 1 (1 to 2) units in both groups. Patients receiving delayed cold-stored platelets had higher odds of allogeneic transfusion in the first 24 h postoperatively (81 of 184 [44%] vs. 169 of 529 [32%]; adjusted odds ratio, 1.65; 95% CI, 1.13 to 2.39; P = 0.009), including both erythrocytes (65 of 184 [35%] vs. 135 of 529 [26%]; adjusted odds ratio, 1.54; 95% CI, 1.03 to 2.29; P = 0.035) and platelets (48 of 184 [26%] vs. 79 of 529 [15%]; adjusted odds ratio, 1.91; 95% CI, 1.22 to 2.99; P = 0.005). There was no difference in the number of units administered postoperatively among those transfused. Platelet counts were modestly lower in the delayed cold-stored platelet group (−9 × 109/l; 95% CI, −16 to −3]) through the first 3 days postoperatively. There were no significant differences in reoperation for bleeding, postoperative chest tube output, or clinical outcomes. Conclusions In adults undergoing cardiac surgery, delayed cold-stored platelets were associated with higher postoperative transfusion utilization and lower platelet counts compared to room temperature-stored platelets without differences in clinical outcomes. The use of delayed cold-stored platelets in this setting may offer a viable alternative when facing critical platelet inventories but is not recommended as a primary transfusion approach. Editor’s Perspective What We Already Know about This Topic What This Article Tells Us That Is New

Abstract Increasing evidence indicates that the brain predicts sensory input based on past experiences, importantly constraining how we experience the world. Despite a growing interest on this framework, known as predictive coding, most of such approaches to multiple psychological domains continue to be theoretical or primarily provide correlational evidence. We here explored the neural basis of predictive processing using noninvasive brain stimulation and provide causal evidence of frequency-specific modulations in humans. Participants received 20 Hz (associated with top-down/predictions), 50 Hz (associated with bottom-up/prediction errors), or sham transcranial alternating current stimulation on the left dorsolateral prefrontal cortex while performing a social perception task in which facial expression predictions were induced and subsequently confirmed or violated. Left prefrontal 20 Hz stimulation reinforced stereotypical predictions. In contrast, 50 Hz and sham stimulation failed to yield any significant behavioral effects. Moreover, the frequency-specific effect observed was further supported by electroencephalography data, which showed a boost of brain activity at the stimulated frequency band. These observations provide causal evidence for how predictive processing may be enabled in the human brain, setting up a needed framework to understand how it may be disrupted across brain-related conditions and potentially restored through noninvasive methods.

Objective: The effects of demographic and socioeconomic characteristics on delay of minimally invasive gynecologic surgery (MIGS) before and during the COVID-19 pandemic were studied. The primary outcome was interval between first MIGS appointment and date of surgery. Materials and Methods: This retrospective cohort study used electronic medical record data of a historical cohort who had benign MIGS in 2014–2016 ( n = 370) and a cohort in 2020 during the COVID pandemic ( n = 249). Included procedures were laparoscopic hysterectomy, myomectomy, adnexal surgery, or endometriosis excision. Patient demographics (race, ethnicity, age, marital status, language, insurance, and socioeconomic factors) were evaluated for associations with surgery delay (> 90 days from initial consultation to operating room date). Results: Median time to surgery was 21 days faster during the pandemic. In the historical cohort, 61% patients waited >90 days, and in the pandemic cohort, 47% patients waited >90 days. In the pandemic cohort, race and primary language were new factors associated with surgery delays. During the pandemic, a greater proportion of patients having surgery delays were Black or other races, compared to White, and a greater proportion did not speak English. After adjusting for referral indications, in multivariable logistic regression, patients who reported Other race had 3 times the odds of surgery delay, compared to White patients. Black patients had higher odds of surgery delay, although this estimate was less precise. Patients with a non-English primary language had >4 times the odds of surgery delay. Ethnicity, insurance and employment status, median household income, neighborhood segregation, and distance to hospital were not associated with surgery delay. Telemedicine accounted for 71% of visits in the pandemic cohort and was associated with a significant decrease in surgery delays with a median wait time of 87 days for patients seen via telemedicine, compared to 101 days for patients seen in-person. A higher proportion of patients using telemedicine were White and spoke English. Hispanic/Latino ethnicity, non-English primary language, and unemployment were associated with in-person versus telemedicine visits. Visit type was not correlated with insurance status, median household income, neighborhood segregation, and distance from the hospital. A risk score was calculated to summarize the estimated effect of intersectionality of multiple identities; multiple minority characteristics were correlated with surgery delays. Time to benign MIGS decreased from historical baselines during the pandemic, indicating improved access to surgical care. This benefit did not apply equally. Disproportionately, White patients who spoke English had no delays and used telemedicine; racial minority patients who did not speak English had greater odds of surgery delays and in-person appointments. Conclusions: Telemedicine can improve access to both MIGS care and surgical outcomes; additional strategies are needed to ensure that all patients receive care advances equitably. (J GYNECOL SURG 39:162)

PurposeThe need to detect and quantify brain lactate accurately by MRS has stimulated the development of editing sequences based on J coupling effects. In J‐difference editing of lactate, threonine can be co‐edited and it contaminates lactate estimates due to the spectral proximity of the coupling partners of their methyl protons. We therefore implemented narrow‐band editing 180° pulses (E180) in MEGA‐PRESS acquisitions to resolve separately the 1.3‐ppm resonances of lactate and threonine.MethodsTwo 45.3‐ms rectangular E180 pulses, which had negligible effects 0.15‐ppm away from the carrier frequency, were implemented in a MEGA‐PRESS sequence with TE 139 ms. Three acquisitions were designed to selectively edit lactate and threonine, in which the E180 pulses were tuned to 4.1 ppm, 4.25 ppm, and a frequency far off resonance. Editing performance was validated with numerical analyses and acquisitions from phantoms. The narrow‐band E180 MEGA and another MEGA‐PRESS sequence with broad‐band E180 pulses were evaluated in six healthy subjects.ResultsThe 45.3‐ms E180 MEGA offered a difference‐edited lactate signal with lower intensity and reduced contamination from threonine compared to the broad‐band E180 MEGA. The 45.3 ms E180 pulse had MEGA editing effects over a frequency range larger than seen in the singlet‐resonance inversion profile. Lactate and threonine in healthy brain were both estimated to be 0.4 ± 0.1 mM, with reference to N‐acetylaspartate at 12 mM.ConclusionNarrow‐band E180 MEGA editing minimizes threonine contamination of lactate spectra and may improve the ability to detect modest changes in lactate levels.