The Impact of Obesity on Success of Immediate Lymphatic Reconstruction for Prevention of Breast Cancer-Related Lymphedema.

BACKGROUND: Breast cancer-related lymphedema (BRCL) is a potential sequela of high-risk breast cancer treatment. Preventive treatment with immediate lymphatic reconstruction (ILR) at the time of axillary lymph node dissection (ALND) has emerged as the standard of care; however, there is relatively little known about factors that may contribute to procedural failure. METHODS: A retrospectively maintained, institutional review board-approved study followed patients who underwent ILR at the time of ALND at our tertiary care center between May 2018 and May 2023. Patients who presented for at least one follow-up visit in our multidisciplinary lymphedema clinic met the criteria for inclusion. Patients who developed lymphedema despite ILR and potential contributing factors were further explored. RESULTS: 349 patients underwent ILR at our institution between May 2018 and May 2023. 341 of these patients have presented for follow-up in our multidisciplinary lymphedema clinic. 32 (9.4%) patients developed lymphedema despite ILR. This cohort was significantly more likely to be obese (56% vs 35%, P = 0.04). Multivariate logistic regression demonstrates increased odds of procedural failure in patients with a body mass index (BMI) ≥30 kg/m2 (odds ratio 2.6 [1.2-5.5], P = 0.01). CONCLUSION: These data comment upon our institutions outcomes following ILR. Patients who develop lymphedema despite ILR tend to have a higher BMI, with a significantly increased risk in patients with a BMI of 30 or greater. Consideration of these data is critical for preprocedural counseling and may support a BMI cutoff when considering candidacy for ILR going forward, as well as when optimizing failures for secondary lymphedema procedures.

Outcomes of Thumb Metacarpophalangeal Joint Arthrodesis Using the XMCP Intramedullary Interlocking Device.

Purpose: The intramedullary interlocking device for metacarpophalangeal (MCP) joint arthrodesis (XMCP, Extremity Medical, Parsippany, NJ) has been shown to promote union at a precise angle, provide strong fixation without the need for prolonged immobilization, and lower the incidence of hardware irritation and revision surgery. In this study, we evaluated the clinical outcomes of patients undergoing MCP joint arthrodesis with the XMCP system using a retrospective chart review, patient reported outcomes, and radiographic analysis. Methods: A retrospective chart review and phone survey was conducted on 57 patients (58 cases) from a single institution between 2017 and 2022. The primary outcome was patient satisfaction, including pre- and postoperative Numeric Rating Scale (NRS) pain scores, Disabilities of Arm Shoulder and Hand (QuickDASH) outcomes, perceived grip strength, and willingness to undergo the procedure again. Secondary outcomes included the need for revision procedures, successful fusion of arthrodesis, and postoperative complications. Results: Of the 57 patients who underwent MCP joint arthrodesis of the thumb using the XMCP fusion device, a total of 43 (75%) completed the phone survey. The average age of patients was 67 years with an average clinical follow-up of 9 months (range 1-65 months). Patients who participated in the phone survey questionnaire had an average QuickDASH score of 24.7 ± 20.5. Average perceived NRS scores were 6.2 ± 3.5 and 1.2 ± 2.1 before and after surgery, respectively. Average perceived grip strength of patients was 3 ± 1.3 out of 5. When evaluating for concurrent procedures, there was no statistically significant difference in pre- or postoperative NRS scores. In total, 38 (88%) patients were satisfied with the procedure, and 39 (91%) patients would undergo the procedure again. Conclusion: Metacarpophalangeal joint arthrodesis of the thumb with the intramedullary fusion device is reproducible, allows for immediate use without immobilization, has a low number of complications, and provides improved function and pain relief. Level of Evidence: Therapeutic III.

Dual plating in the metastatic distal humerus: Benefits may outweigh the risks.

Background: Impending and complete pathologic fractures of the distal humerus are rare complications of metastatic cancer. Surgical treatment aims to quickly restore function and minimize pain. Plate and screw fixation (PSF) is a common method for addressing these lesions, but unlike in orthopaedic trauma, there are no clear guidelines for best management. While dual PSF theoretically provides better support and reduces the chance of reoperation due to tumor progression, single PSF is currently the more common choice. Materials and methods: Between March 2008 and September 2021, 35 consecutive patients who underwent PSF for distal humerus metastasis or multiple myeloma were retrospectively reviewed. The proportion of patients who developed various postoperative complications, including infection, nonunion, deep vein thrombosis, tumor progression, and radial nerve palsy, as well as those requiring reoperation, was calculated. Mann-Whitney U test, Pearson's chi-squared, and Fisher's exact test were used to investigate differences between the single and dual PSF groups with statistical significance defined as p ≤ 0.05. Results: There was no significant difference (p = 0.259) in revision rate, although 3 of 21 (14.3 %) single PSF patients required reoperation compared to 0 of 14 (0.0 %) dual PSF patients. The revisions were performed in one patient due to refracture and in two patients due to tumor progression. Although not statistically significant, a larger percentage of single PSF patients developed a postoperative complication compared to dual PSF patients [odds ratio 0.42 (95 % confidence interval 0.071 to 2.5); p = 0.431]. Single PSF did lead to shorter operative time compared to dual PSF [p < 0.001]. Conclusion: Dual PSF is non-inferior to single PSF and potentially results in fewer reoperations and postoperative complications in distal humerus pathologic lesions, although it leads to longer operative time. The current study is limited by small sample size due to the rarity of distal humerus metastatic lesions.

Sociodemographic and Clinical Predictors of Prolonged Length of Corneal Ulcer Hospitalizations.

Importance: The length of stay (LOS) of hospitalizations may be a useful indicator of the burden of disease of corneal ulcers. Identifying variables associated with longer LOS may help to enhance delivery of care for high-risk patients. Objective: To investigate the sociodemographic, social, and clinical factors associated with LOS in hospitalizations for corneal ulcers in the US. Design, Setting, and Participants: This was a retrospective cross-sectional study of adult patients (aged >18 years) admitted with a primary diagnosis of corneal ulcer between quarter 4 of 2015 through 2020 and conducted using data from the National Inpatient Sample (NIS). Patients were stratified into 2 even cohorts based on LOS: LOS of 4 days or less and LOS greater than 4 days. Individual-level sociodemographic, social risk factors, and medical comorbidities associated with longer LOS were examined by multivariable regression. Data were analyzed from October 2015 to December 2020. Exposure: Potential sociodemographics or medical comorbidities at hospital admission. Main Outcome and Measure: The primary outcome of interest was factors associated with extended length of stay. The hypothesis being tested was formulated during data collection. Results: A total of 1187 patients (mean [SD] age, 53.5 [20.9] years; 602 female [50.7%]) were included for analysis. The cohort with LOS greater than 4 days had higher total charges than the cohort with LOS of 4 days or less (mean [SD] charges, $79 504 [$86 719] vs $26 474 [$20 743]; P < .001). Sociodemographic variables associated with LOS greater than 4 days were Black race (adjusted odds ratio [aOR], 1.41; 95% CI, 1.03-1.92; P = .03), Medicare insurance (aOR, 1.42; 95% CI, 1.09-1.85; P = .009), and housing insecurity (aOR, 1.99; 95% CI, 1.29-3.06; P = .002). Medical comorbidities associated with LOS greater than 4 days were alcohol use (aOR, 1.50; 95% CI, 1.00-2.26; P = .05), dementia (aOR, 2.35; 95% CI, 1.36-4.07; P = .002), complicated diabetes (aOR, 1.75; 95% CI, 1.21-2.53; P = .003), uncomplicated diabetes (aOR, 1.57; 95% CI, 1.02-2.42; P = .04), drug misuse (aOR, 1.66; 95% CI, 1.08-2.57; P = .02), and legal blindness (aOR, 3.42; 95% CI, 1.19-9.82; P = .02). Based on NIS national estimates, corneal ulcers were estimated to have a direct annual health care expenditure of $35 819 590 in the US. Conclusion and Relevance: Corneal ulcer hospitalizations represent a significant burden of disease for patients and health care systems. This study highlights sociodemographic and clinical factors that may help clinicians identify high-risk patients vulnerable to complications and morbidity due to corneal ulcers.

How Does Oversewing/Suturing (OS/S) Compare to Other Staple Line Reinforcement Methods? A Systematic Review and Meta-Analysis.

Various staple line reinforcement (SLR) techniques in sleeve gastrectomy, including oversewing/suturing (OS/S), gluing, and buttressing, have emerged to mitigate postoperative complications such as bleeding and leaks. A meta-analysis of randomized controlled trials has demonstrated OS/S as an efficacious strategy for preventing postoperative complications, encompassing leaks, bleeding, and reoperations. Given that OS/S is the sole SLR technique not incurring additional costs during surgery, our study aimed to compare postoperative outcomes associated with OS/S versus alternative SLR methods. Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we reviewed the literature and conducted fifteen pairwise meta-analyses of comparative studies, each evaluating an outcome between OS/S and another SLR technique. Thirteen of these analyses showed no statistically significant differences, whereas two revealed notable distinctions.

Utilization of Topical Polysporin and Triamcinolone for the Treatment of Hypergranulation Tissue.

Hypergranulation is the abnormal accumulation of granulation tissue in a wound and is commonly seen in burns. It impairs wound healing and can predispose patients to infection. There is no gold standard treatment for hypergranulation tissue, but some options include surgical debridement, chemical cautery with silver nitrate, and topical steroids. Silver nitrate treatment is painful and can lead to scarring, so topical steroid use is on the rise. A retrospective review, between January 1, 2017 and August 30, 2021, at a tertiary burn center was performed to analyze outcomes of hypergranulation tissue after treatment with a topical 50/50 mixture of triamcinolone (Perrigo, Dublin, Ireland) and Polysporin (Johnson & Johnson, New Brunswick, NJ). One hundred and sixteen patients were treated with triamcinolone and Polysporin for hypergranulation tissue, although 24 did not meet inclusion criteria. Eighty-eight out of 92 patients were successfully treated until hypergranulation resolution, while 4/92(4.3%) required silver nitrate or surgery despite the topical cream to achieve resolution. In the 88 patients successfully treated until hypergranulation resolution, 99 areas of hypergranulation were treated. Forty-one of 99 (41.4%) hypergranulation areas resolved within 2 weeks. The average time to hypergranulation resolution was 27.5 ± 2.5 days. We found that a novel 50/50 mixture of triamcinolone and Polysporin topical ointment is an effective and safe treatment for hypergranulation tissue in burn wounds. Further prospective studies are needed to determine its efficacy and safety profile.

A Novel Method to Determine Patient Skin Type: The Skin Analyzer.

Measuring skin color for medical research in an objective and nonbiased manner usually requires expensive equipment such as spectrophotometry and requires the subject to be present in person. We present a novel method to measure skin color from photographs using the Skin Analyzer application as a more effective, accessible, and efficient alternative. A desktop application, the Skin Analyzer, was developed to convert skin samples collected from digital images to the L*a*b color space and uses those values to calculate an individual typology angle that correlates to a Fitzpatrick skin type. To assess accuracy in variable lighting, six known colors representing the six Fitzpatrick skin types were printed and photographed in 15 separate locations within the hospital. To account for user variability in sample selection, interrater reliability was calculated with data generated by 13 untrained users testing the app on six subjects. The accuracy of measuring known values, which is the classification accuracy, was calculated to be 80%. Krippendorff alpha test was used to evaluate interrater reliability. The obtained alpha of 0.84 indicates a high interrater reliability. The high accuracy and reliability make the Skin Analyzer a suitable method of objectively determining Fitzpatrick skin type from images. The app may be used to investigate the effects of skin tone in various areas of interest, especially in retrospective studies where skin colorimeters cannot be used.

Characteristics and Complication Rates of Mandibular Fractures Caused by Violent Mechanisms Versus Nonviolent Mechanisms.

Background: Mandibular fractures due to intentionally violent mechanisms represent a unique subset of facial fractures. The objective of our research is to identify how violence affects patterns of mandibular fractures and their outcomes. Methods: In this institutional review board-approved, retrospective study, we examined our institution's records for adult patients >18 years of age who presented with ≥ 1 mandibular fractures from January 2011 to January 2022. Violence was defined as trauma intended to hurt another or self. Demographics, fractures, mechanism, concomitant injuries, treatment, and complications were analyzed with Excel and SPSS statistical software. Results: A total of 692 patients were diagnosed with mandibular fractures, with 323 of these due to violence (47%). These patients of violence (POVs) had an average fracture per patient of 1.6 ± 0.7. The majority (88%) were male and African American (33%), and the average age was 34.3 ± 13.2 years. The most common violent mechanism was a punch (68%). The POVs presented with fewer concomitant injuries, were less likely to be admitted to the intensive care unit, and were more often surgically managed with open reduction than were patients of nonviolence (PONVs) (P < .01). POVs were more likely to have healing complications; though not statistically significant, this population was observed to be frequently lost to follow-up (P = .12). POVs notably had a much higher proportion of hardware exposure among complications than was seen in PONVs (23% vs 9%). Conclusions: Patients with violent fracture mechanisms may tend to be predisposed to more complications compared with patients who have nonviolent fracture mechanisms despite lesser severities due to social determinants of health. Characteristics of this patient subset may tend to cause difficulties in postoperative care and follow-up. Effective discharge instruction communication, patient outreach programs, and homelessness and drug abuse screening in this subset may help reduce healing complications.

Changes in Perioperative Outcomes after Robotic-Assisted Pulmonary Lobectomy during the COVID-19 Era.

Background: The COVID-19 pandemic presented patients with barriers to receiving healthcare. We sought to determine whether changes in healthcare access and practice during the pandemic affected perioperative outcomes after robotic-assisted pulmonary lobectomy (RAPL). Methods: We retrospectively analyzed 721 consecutive patients who underwent RAPL. With March 1st, 2020, defining the start of the COVID-19 pandemic, we grouped 638 patients as "PreCOVID-19" and 83 patients as "COVID-19-Era" based on surgical date. Demographics, comorbidities, tumor characteristics, intraoperative complications, morbidity, and mortality were analyzed. Variables were compared utilizing Student's t-test, Wilcoxon rank-sum test, and Chi-square (or Fisher's exact) test, with significance at p ≤ 0.05 . Multivariable generalized linear regression was used to investigate predictors of postoperative complication. Results: COVID-19-Era patients had significantly higher preoperative FEV1%, lower cumulative smoking history and higher incidences of preoperative atrial fibrillation, peripheral vascular disease (PVD), and bleeding disorders compared to PreCOVID-19 patients. COVID-19-Era patients had lower intraoperative estimated blood loss (EBL), reduced incidence of new-onset postoperative atrial fibrillation (POAF), but higher incidence of effusion or empyema postoperatively. Overall postoperative complication rates between the groups were similar. Older age, increased EBL, lower preoperative FEV1%, and preoperative COPD are all predictive of an increased risk for postoperative complication. Conclusions: COVID-19-Era patients having lower EBL and less new-onset POAF, despite greater incidences of multiple preoperative comorbidities, demonstrates that RAPL is safe during the COVID-19 era. Risk factors for development of postoperative effusion should be determined to minimize risk of empyema in COVID-19-Era patients. Age, preoperative FEV1%, COPD, and EBL should all be considered when planning for complication risk.

Dantrolene inhibits lysophosphatidylcholine-induced valve interstitial cell calcific nodule formation via blockade of the ryanodine receptor.

Calcific aortic valve disease (CAVD), a fibrocalcific thickening of the aortic valve leaflets causing obstruction of the left ventricular outflow tract, affects nearly 10 million people worldwide. For those who reach end-stage CAVD, the only treatment is highly invasive valve replacement. The development of pharmaceutical treatments that can slow or reverse the progression in those affected by CAVD would greatly advance the treatment of this disease. The principal cell type responsible for the fibrocalcific thickening of the valve leaflets in CAVD is valvular interstitial cells (VICs). The cellular processes mediating this calcification are complex, but calcium second messenger signaling, regulated in part by the ryanodine receptor (RyR), has been shown to play a role in a number of other fibrocalcific diseases. We sought to determine if the blockade of calcium signaling in VICs could ameliorate calcification in an in vitro model. We previously found that VICs express RyR isotype 3 and that its modulation could prevent VIC calcific nodule formation in vitro. We sought to expand upon these results by further investigating the effects of calcium signaling blockade on VIC gene expression and behavior using dantrolene, an FDA-approved pan-RyR inhibitor. We found that dantrolene also prevented calcific nodule formation in VICs due to cholesterol-derived lysophosphatidylcholine (LPC). This protective effect corresponded with decreases in intracellular calcium flux, apoptosis, and ACTA2 expression but not reactive oxygen species formation caused by LPC. Interestingly, dantrolene increased the expression of the regulator genes RUNX2 and SOX9, indicating complex gene regulation changes. Further investigation via RNA sequencing revealed that dantrolene induced several cytoprotective genes that are likely also responsible for its attenuation of LPC-induced calcification. These results suggest that RyR3 is a viable therapeutic target for the treatment of CAVD. Further studies of the effects of RyR3 inhibition on CAVD are warranted.

Effects of preoperative pulmonary function on perioperative outcomes after robotic-assisted pulmonary lobectomy.

INTRODUCTION: Effects of pulmonary function test (PFT) results on perioperative outcomes were investigated after robotic-assisted video-thoracoscopic (RAVT) pulmonary lobectomy. METHODS: We retrospectively analyzed 706 consecutive patients who underwent RAVT lobectomy by one surgeon over 10.8 years. Preoperative (preop) forced expiratory volume in 1 s as a percent of predicted (FEV1%) was used to group patients as having normal FEV1% (≥80%) versus reduced FEV1% (<80%). Demographics, preop comorbidities, intraoperative (intraop) and postoperative (postop) complications, perioperative outcomes, and median survival time (MST) were compared across patients with normal vs. reduced FEV1% using Chi-Square (X2), Fisher's Exact test, Student's t-test, Kruskal-Wallis test, or Kaplan-Meier analysis respectively, with significance at p ≤ 0.05. Multivariable analysis was performed for perioperative outcomes to investigate the differences across patients in the FEV1% groups. RESULTS: There were 470 patients with normal FEV1% and 236 patients with reduced FEV1%. The two FEV1% groups did not differ in intraop or postop complication rates, except for higher postop other arrhythmia requiring intervention (p = 0.004), prolonged air leak >5 days (p = 0.002), mucous plug formation (p = 0.009), hypoxia (p < 0.001), and pneumonia (p = 0.002), and total postop complications (p < 0.001) in reduced-FEV1% patients. Reduced FEV1% correlated with increased intraop estimated blood loss (p < 0.0001) and skin-to-skin operative time (p < 0.0001). Median overall survival in patients with normal FEV1% was 93.20 months (95% CI: 76.5-126.0) versus 58.9 months (95% CI: 50.4-68.4) in patients with reduced FEV1% (p = 0.0004). CONCLUSION: Patients should have PFTs conducted before surgery to determine at-risk patients. However, RAVT pulmonary lobectomy is feasible and safe even in patients with reduced FEV1%.

Discrimination of Sexual and Gender Minority Patients in Prostate Cancer Treatment: Results from the Restore-1 Study.

This study is the first to quantify experiences of discrimination in treatment undertaken by sexual and gender minority prostate cancer patients. Participants were 192 gay and bisexual and one transgender prostate cancer patients living in the US recruited from North America's largest online cancer support group. In this online survey, discrimination in treatment was measured using the Everyday Discrimination Scale (EDS), adapted for medical settings. Almost half (46%) endorsed at least one item, including 43% that the provider did not listen, 25% that they were talked down to, 20% that they received poorer care than other patients, 19% that the provider acted as superior, and 10% that the provider appeared afraid of them. While most (26.3%) rated the discrimination as "rare" or "sometimes" (EDS=1-3), 20% reported it as more common (EDS≥4). Most attributed the discrimination to their sexual orientation, or to providers being arrogant or too pushed for time. Discrimination was significantly associated with poorer urinary, bowel, and hormonal (but not sexual) EPIC function and bother scores, and with poorer mental health (SF-12). Those who had systemic/combined treatment (versus either radiation only or surgery only) were more likely to report discrimination. This study provides the first evidence that discrimination in prostate cancer treatment, including micro-aggressions, appear a common experience for gay and bisexual patients, and may result in poorer health outcomes.

Unrecognized sexual dysfunction in gay and bisexual men after prostate cancer treatment: the antecedents and impact of anodyspareunia.

BACKGROUND: Anodyspareunia may be an adverse outcome of prostate cancer (PCa) treatment for gay, bisexual, and other men who have sex with men (GBM). AIM: The aims of this study were to (1) describe the clinical symptoms of painful receptive anal intercourse (RAI) in GBM following PCa treatment, (2) estimate the prevalence of anodyspareunia, and (3) identify clinical and psychosocial correlates. METHODS: This was a secondary analysis of baseline and 24-month follow-up data from the Restore-2 randomized clinical trial of 401 GBM treated for PCa. The analytic sample included only those participants who attempted RAI during or since their PCa treatment (N = 195). OUTCOMES: Anodyspareunia was operationalized as moderate to severe pain during RAI for ≥6 months that resulted in mild to severe distress. Additional quality-of-life outcomes included the Expanded Prostate Cancer Index Composite (bowel function and bother subscales), the Brief Symptom Inventory-18, and the Functional Assessment of Cancer Therapy-Prostate. RESULTS: Overall 82 (42.1%) participants reported pain during RAI since completing PCa treatment. Of these, 45.1% experienced painful RAI sometimes or frequently, and 63.0% indicated that the pain was persistent. The pain at its worst was moderate to very severe for 79.0%. The experience of pain was at least mildly distressing for 63.5%. Painful RAI worsened for a third (33.4%) of participants after completing PCa treatment. Of the 82 GBM, 15.4% were classified as meeting criteria for anodyspareunia. Antecedents of anodyspareunia included a lifelong history of painful RAI and bowel dysfunction following PCa treatment. Those reporting symptoms of anodyspareunia were more likely to avoid RAI due to pain (adjusted odds ratio, 4.37), which was negatively associated with sexual satisfaction (mean difference, -2.77) and self-esteem (mean difference, -3.33). The model explained 37.2% of the variance in overall quality of life. CLINICAL IMPLICATIONS: Culturally responsive PCa care should include the assessment of anodyspareunia among GBM and explore treatment options. STRENGTHS AND LIMITATIONS: This is the largest study to date focused on anodyspareunia among GBM treated for PCa. Anodyspareunia was assessed with multiple items characterizing the intensity, duration, and distress related to painful RAI. The external validity of the findings is limited by the nonprobability sample. Furthermore, the cause-and-effect relationships between the reported associations cannot be established by the research design. CONCLUSIONS: Anodyspareunia should be considered a sexual dysfunction in GBM and investigated as an adverse outcome of PCa treatment.

Identifying and Predicting Diverse Patterns of Benign Nodule Growth.

CONTEXT: The natural history of benign thyroid nodules is typically characterized by slow growth and minimal risk of malignant transformation. Available data have, to date, been unable to elucidate the diversity of benign nodule growth patterns over time nor predictive of which patients follow which pattern. OBJECTIVE: We aimed to better define the diverse patterns of benign nodule behavior and their predictors. METHODS: We prospectively studied 389 consecutive patients with solitary, solid, cytologically benign thyroid nodules ≥1 cm and follow-up ultrasound for at least 4 years. Demographic, sonographic, biochemical data were collected at initial evaluation, and subsequent growth patterns were identified over the follow-up. Predictors of growth at initial evaluation and 3 years of follow-up were defined. RESULTS: The mean (±SD) follow-up was 7.7 (±2.7) years. Three distinct growth patterns were identified: A) stagnant nodules with average growth rate < 0.2 mm/year; B) slow-growing nodules with a rate 0.2 to 1.0 mm/year; and C) fast-growing nodules increasing > 1.0 mm/year. Fast-growing nodules represented 17.2% of the cohort, and were more frequent in patients younger than 50 years (OR 2.2 [1.2-4.1], P = 0.016), and in larger nodules (2.0-2.9 cm, OR 3.5 [1.7-7.1], P = 0.001; >3.0 cm, OR 4.4 [1.8-10.4], P = 0.001 vs reference 1-1.9 cm). In a multiple regression model, nodule growth at 3 years at an average growth rate over 0.2 mm/year over 3 years since initial evaluation was an independent predictor of longer-term fast nodule growth, even after adjusting for age, biological sex, TSH level, and nodule size (P < 0.001). CONCLUSION: The natural history of benign nodule growth is diverse, with over 80% of nodules demonstrating minimal to no growth long-term. Nearly 20% of cytologically benign nodules may exhibit a fast, continued growth pattern, which can be predicted by the 3-year growth rate pattern. These findings can help inform decision making for tailored benign nodule follow-up and monitoring.

Comparison of Phacoemulsification Grooving Efficiency in Longitudinal vs Transversal Handpieces.

Purpose: To determine the difference, if any, in grooving efficiency at various settings on the Whitestar Signature Pro phacoemulsification (phaco) system. Methods: Cataractous lenses were simulated by exposing porcine lenses to formalin for 2 hours. A total of 120 lenses were analyzed at various power settings on both longitudinal and transversal handpieces. Twenty trials each were performed with power set to 25%, 50%, and 75% on both handpieces. A Whitestar Phaco Handpiece System was used to provide longitudinal power, and a Whitestar Signature Ellipsis Handpiece provided transversal power. Lenses were placed within a plastic chamber and grooved by an investigator blinded to settings. A second investigator recorded times and adjusted settings. The Whitestar Signature Pro phaco system was used for grooving. Results: There was no significant difference in grooving times between the longitudinal and transverse handpieces at any power setting (P > 0.05). There was a significant decrease in grooving times when comparing the 25% power setting with the 75% power setting for the transversal handpiece (P=0.021). Conclusion: Both longitudinal and transversal handpieces on the Whitestar Signature Pro phaco system produce similar results to one another at each power setting. There is a general trend toward shorter grooving times, reflecting greater efficiency, at higher power settings. Grooving efficiency on the transversal handpiece may be more affected by changes in the power settings as compared with the longitudinal settings.

The Effects of Prostate Cancer Treatment on Role-In-Sex in Gay and Bisexual Men: Mixed Methods Results from the Restore-1 and Restore-2 Studies.

Gay and bisexual men (GBM) with prostate cancer experience worse sexual and mental health outcomes following prostate cancer treatment than heterosexual men. Emerging evidence suggests that GBM may change their role-in-sex in response to treatment effects. The purpose of this study was to describe the impact of prostate cancer treatment on role-in-sex, to estimate the prevalence of such changes, and to determine the impact on quality of life and mental health. We conducted semi-structured interviews with 30 sexual minority prostate cancer patients. Then, we recruited 401 gay and bisexual prostate cancer patients into a study assessing the effects of rehabilitation. Qualitative data were analyzed using descriptive thematic analysis. Differences in quality of life and mental health outcomes were analyzed using multivariate analyses of variance. Prostate cancer treatment resulted in loss of role-in-sex for many patients. When changes in role-in-sex occurred, the shifts were predominantly from tops to bottoms. Those with a current top role-in-sex had significantly better sexual and mental health outcomes than either versatiles or bottoms. Clinical implications include the need for providers to ask about role-in-sex in order to address disparities in health outcomes by sexual orientation and to provide culturally appropriate care to sexual minority patients.

A High Preoperative Blood Urea Nitrogen to Serum Albumin Ratio Does Not Predict Worse Outcomes Following the Robotic-Assisted Pulmonary Lobectomy for Lung Cancer.

BACKGROUND:  The blood urea nitrogen to serum albumin ratio (BAR) is an emerging prognostic parameter of interest. The utility of BAR as a prognostic factor has not been analyzed in lung cancer patients undergoing pulmonary lobectomy. We evaluated the ability of High BAR to predict worse outcomes after robotic-assisted pulmonary lobectomy (RAPL) for lung cancer. METHODS:  We retrospectively analyzed 400 patients who underwent RAPL from September 2010 to March 2022 by one surgeon. Patients were stratified by Low BAR (<6.25 mg/g) and High BAR (≥6.25 mg/g). Patients' demographics, tumor characteristics, comorbidities, surgical complications, outcomes, and survival were collected and compared by High and Low BAR groups. The primary outcome of interest was 30-day mortality. RESULTS:  Receiver operator curves (ROC) confirmed that 6.25 was an optimal threshold for estimating mortality based on Low and High BAR. There were no differences in surgical complications or outcomes between the Low and High BAR groups. The ability of BAR to predict 30-day mortality was evaluated with the area under the curve (AUC) analysis, which showed that higher BAR could not predict mortality (AUC=0.655; 95% CI, 0.435-0.875; p=0.166). Similarly, survival analysis revealed no difference in five-year overall survival between the Low and High BAR groups (p=0.079). CONCLUSION:  High BAR did not predict worse outcomes after RAPL for lung cancer in our study. Further studies are needed to better determine the prognostic ability of BAR in lower-risk populations.

Concomitant Purulent Pericarditis and Pleuritis Due to Actinomyces odontolyticus Following Endobronchial Biopsy for Pulmonary Sarcoidosis.

The authors present a very rare case of bacterial purulent pericarditis due to Actinomyces odontolyticus 2 weeks following an endobronchial ultrasound bronchoscopy. On his presentation, he was in cardiac tamponade, for which he underwent an emergent pericardiocentesis with purulent drainage. Similar organisms grew in his left pleural effusion. (Level of Difficulty: Intermediate.).

Localized Hydrophobicity in Aqueous Zinc Electrolytes Improves Zinc Metal Reversibility.

The rechargeability of aqueous zinc metal batteries is plagued by parasitic reactions of the zinc metal anode and detrimental morphologies such as dendritic or dead zinc. To improve the zinc metal reversibility, hereby we report a new solution structure of aqueous electrolyte with hydroxyl-ion scavengers and hydrophobicity localized in solvent clusters. We show that although hydrophobicity sounds counterintuitive for an aqueous system, hydrophilic pockets may be encapsulated inside a hydrophobic outer layer, and a hydrophobic anode-electrolyte interface can be generated through the addition of a cation-philic, strongly anion-phobic, and OH--reactive diluent. The localized hydrophobicity enables less active water and less absorbed water on the Zn anode surface, which suppresses the parasitic water reduction; while the hydroxyl-ion-scavenging functionality further minimizes undesired passivation layer formation, thus leading to superior reversibility (an average Zn plating/stripping efficiency of 99.72% for 1000 cycles) and lifetime (80.6% capacity retention after 5000 cycles) of zinc batteries.