Citations

Abstract PURPOSE 18F-DOPA is sensitive/specific for identifying areas of biologically aggressive disease for glioblastoma. We report the impact of 18F-DOPA on radiation treatment planning from a phase II study. METHODS Gross target volume (GTV) was defined by the boolean of high-risk PET (tumor/normal brain SUV > 2.0) and MRI T1 contrast enhancement (MRI-CE) including surgical cavity. The clinical target volume (CTV) included the GTV with 1cm margin. Using proton beam therapy, GTV ≤ 65 cc was treated with 25 (CTV), 30 (MRI-CE), and 35 (PET) GyE over 5 fractions with a simultaneous integrated boost. GTV > 65 cc received 30 (CTV), 35 (MRI-CE), and 40 (PET) GyE over 10 fractions. Radiation field design was compared to traditional 1.5cm CTV margin on MRI-CE. RESULTS Between May 2019 and October 2021, 39 patients were treated. The median MRI-CE tumor diameter was 5.2cm. The median PET volume was 7.9cc (range 0–64.9cc). The median MRI-CE volume was 35.1cc (range 8.6–114cc). High-risk PET was contained within: MRI-CE 18/39 (46%), MRI-CE + T2W FLAIR 13/39 (33%), MRI-CE + T2W FLAIR + outside GTV 4/39 (10%), outside GTV 2/39 (5%) and no uptake 2/39 (5%). Utilizing this planning technique, there was a 26% volume reduction in CTV to traditional 1.5 cm margin on MRI-CE. PET imaging in treatment planning allowed inclusion of high-risk disease that would have been excluded on traditional CTV in 23% of cases (range 1.6-33.8cc). PET was more predictive [HR 1.03 (95% CI 1.01, 1.05) p = 0.002] than MRI [HR 1.01 (95% CI 1.00, 1.03) p = 0.02] for death with each cc increasing risk of death by 3.1%. CONCLUSIONS The incorporation of 18F-DOPA in treatment planning yields a more targeted approach with reductions in both normal brain treated and risk of geographic miss compared to traditional CTV margins.

AbstractObjectiveThis study tested the hypothesis that expression of insulin‐like growth factor 1 (IGF‐1) protein and mRNA splice variants is lower in skeletal muscle of humans with obesity who have a lower mixed‐muscle protein fractional synthesis rate (MMP‐FSR) when compared with individuals without obesity.MethodsThe study included nine participants with obesity (OB, mean [SD], BMI = 35 [3] kg/m2, MMP‐FSR = 0.06%/h [0.02%/h]) and nine participants without obesity (W‐OB, BMI = 24 [3] kg/m2, MMP‐FSR = 0.08%/h [0.02%/h]; for both BMI and MMP‐FSR p < 0.05). MMP‐FSR and mitochondrial protein FSR were measured following an overnight fast.ResultsAlong with lower MMP‐FSR, OB participants displayed lower mitochondrial protein FSR (p = 0.03) compared with W‐OB participants. Expression of IGF‐1 (p = 0.04) and IGF‐1 receptor (p < 0.01) proteins was lower in muscle of OB participants. In addition, OB participants had lower (p < 0.05) mRNA expression of IGF1 variants Eb and Ec. This study demonstrates that lower protein synthesis in muscle of humans with obesity occurs concurrently with lower expression of muscle IGF‐1 and IGF‐1 receptor proteins, as well as lower mRNA expression of the IGF1 splice variants.ConclusionsThese findings indicate that lower protein synthesis observed in muscle of humans with obesity may result from diminished muscle IGF1 gene expression.

OBJECTIVES Few medical schools incorporate formal education on human trafficking (HT) and sex trafficking (ST) into their curriculum. Our objective was to develop, implement, and evaluate education on HT and ST in the first-year medical student curriculum. METHODS The curriculum included a standardized patient (SP) experience and lecture. As part of their mandatory sexual health course, students interviewed an SP who presented with red flags for ST and then participated in a discussion led by a physician-facilitator in an observed small group setting. A multiple-choice survey to assess knowledge about HT and ST was developed and administered to students before and after the SP interview. RESULTS Of the 50 first-year medical students, 29 (58%) participated in the survey. Compared with the students’ baseline scores (according to the percentage of correct responses), scores after the educational intervention showed a significant increase in percentage correct on questions related to trafficking definition and scope (elder care, P = .01; landscaping, P = .03); victim identification ( P < .001); referral to services ( P < .001); legal issues ( P = .01); and security ( P < .001). On the basis of the feedback, a 2-hour lecture, which was adapted from the American Medical Women's Association–Physicians Against the Trafficking of Humans “Learn to Identify and Fight Trafficking” training, was presented the next year to all first-year medical students as part of their longitudinal clinical skills course and before the SP case. Curriculum objectives included learning trafficking definitions, victim/survivor identification, intersections with health care, the local impact of HT, and available resources. CONCLUSION This curriculum fulfills course objectives and could be replicated at other institutions. Further evaluation of this pilot curriculum is necessary to evaluate its effectiveness.

Background. The Banff classification scheme provides a framework for interpreting transplant kidney biopsies and has undergone various updates in the past 2 decades especially related to antibody-mediated rejection. The clinical significance of early glomerulitis seen within 4 mo on protocol biopsies has received limited attention. We hypothesized that early glomerulitis seen on protocol biopsies will lead to significant adverse outcomes as assessed by histopathology and allograft outcome. Methods. A single-center retrospective study of a cohort of patients who underwent protocol biopsies within 4 mo after transplantation with timely follow-up protocol biopsies were assessed. Patients with recurrent glomerulonephritis were excluded. Results. We calculated glomerulitis (g) scores for 2212 biopsy specimens and identified 186 patients with glomerulitis (g > 0) and 2026 patients without glomerulitis (g = 0). The progression to chronic transplant glomerulopathy at 1 and 2 y was higher in patients with g > 0 as compared with g = 0 (year 1, 10.7% versus 2.3% [P < 0.001]‚ respectively; year 2, 17.2% versus 4.3% [P < 0.001], respectively) with no difference in other chronic lesions. The death-censored graft failure rate was higher in patients with g > 0 as compared with g = 0 (hazard ratio, 1.68 [95% CI, 1.07-2.65]; P = 0.02). We did not find any difference in outcomes in glomerulitis group based on donor-specific antibody. Conclusion. Our findings suggest that early glomerulitis (seen within 4 mo after transplantation) may lead to clinically significant long-term changes and thus could be a target for early intervention therapies.

Abstract Context Enhanced Recovery After Surgery (ERAS) is a multimodal protocol aimed to improve quality of postoperative recovery, minimize complications, and optimize overall self-regulation. Preoperative gabapentin decreases postoperative pain but can be associated with prolonged postoperative somnolence and respiratory depression risk. Although it is known that gabapentin affects the postoperative course, it is unclear if the timing of preoperative administration affects this finding. Objectives This study aims to assess the optimal preoperative timing for gabapentin administration in patients undergoing gynecologic surgery to minimize postoperative somnolence risk. Methods A retrospective cohort study evaluated patients who underwent major gynecologic surgery and received preoperative gabapentin. Patients were grouped based on timing from gabapentin administration to surgical incision (<4 h group vs. ≥4 h group). Preoperative, intraoperative, and postoperative data were abstracted and compared. Univariate associations between the timing of gabapentin administration and the patient and surgical characteristics and outcomes were tested utilizing two-sample equal-variance t-tests, linear model ANOVA, or Fisher’s exact tests. Associations between the timing of gabapentin administration and the time until the Richmond Agitation Sedation Scale (RASS) score of 0 were modeled utilizing linear regression, adjusted for age, initial postoperative anesthesia care unit (PACU), RASS score, and postoperative narcotics. Results Each group contained 127 patients. Demographics were similar except for age (<4 h group mean=44.2 years; ≥4 h group mean=40.5 years; p=0.021), chronic pain (<4 h group=17.6%; ≥4 h group=43.3%; p<0.001), and surgical indication (<4 h group=pelvic pain [29.1%]; ≥4 h group=pelvic pain [51.2%]; p=0.007). The <4 h group had a similar postoperative narcotic administration (<4 h group mean morphine milligram equivalents [MME]=3.667; ≥4 h group mean MME=4.833; p=0.185). The minutes from surgical closure until the patient received a RASS score of 0 and initial PACU pain score (Visual Analogue Scale [VAS]) were similar. The initial PACU oxygen administration volume, hours from surgical closure until the patient transitioned to room air, and initial PACU respiratory rate were similar. The PACU duration, admission secondary to somnolence, and initial PACU Glasgow Coma Scale (GCS) score showed no difference. Postoperative nausea/vomiting was decreased in the ≥4 h group (<4 h group=24.4%; ≥4 h group=13.4%; p-value=0.036), and urinary retention (<4 h group=14.2%; ≥4 h group=5.5%; p-value=0.033) was decreased in the ≥4 h group. Conclusions The timing of gabapentin administration less than or more than 4 h preoperatively in patients ≥18 years does not significantly affect postoperative somnolence or respiratory depression. Further, it does not have a significant effect on GCS scores or VAS scores.

Background: Understanding the accuracy of a woman's perceived breast cancer risk can enhance shared decision-making about breast cancer screening through provider and patient discussion. We aim to report and compare women's perceived lifetime breast cancer risk to calculated lifetime breast cancer risk. Methods: Women presenting to Mayo Clinic in Arizona and Minnesota in July 2016 completed a survey assessing their perceived breast cancer risk. Lifetime Gail risk scores were calculated from questions pertaining to health history and were then compared with perceived breast cancer risk. Results: A total of 550 predominantly white, married, and well-educated (≥college) women completed surveys. Using lifetime Gail risk scores, 5.6% were classified as high risk (>20% lifetime risk), 7.7% were classified as intermediate risk (15%–20%), and 86.6% were classified as average risk (<15%). Of the 27 women who were classified as high risk, 18 (66.7%) underestimated their risk and of the 37 women who were intermediate risk, 12 (32.4%) underestimated risk. Women more likely to underestimate their risk had a reported history of an abnormal mammogram and at least one or more relative with a history of breast cancer. Surveyed women tended to overestimate risk 4.3 (130/30) times as often as they underestimated risk. Conclusion: In a group of predominantly white, educated, and married cohort of women, there was a large portion of women in the elevated risk groups who underestimated risk. Specific aspects of medical history were associated with underestimation including a history of abnormal mammogram and family history of breast cancer. Overall, in our sample, more women overestimated than underestimated risk.

Introduction. Obesity is a common comorbidity seen in the perioperative setting and is associated with many diseases including cardiovascular disease and obstructive sleep apnea. Laparoscopic Roux-en-Y gastric bypass is the gold standard surgical treatment for patients whose weight is refractory to diet and exercise. Caring for these patients perioperatively presents unique challenges to anesthesiologists and is associated with an increased risk of adverse respiratory events. In our study, we hypothesize that a low-dose perioperative ketamine infusion will reduce opioid consumption and improve analgesia when compared to standard therapy. Methods. This is a single-center, prospective randomized controlled study enrolling 35 patients in total. Patients were randomized equally into the ketamine and control group. Preop, intraop, and postop management regimens were standardized. The ketamine group received a 0.3 mg/kg ideal body weight ketamine bolus after induction followed by a 0.2 mg/kg/hr ketamine infusion continued into the postop setting for up to 24 hours. Data collected included total perioperative opioids used converted to oral morphine equivalents (ME), pain scores, side effects, hospital length of stay, and patient satisfaction captured via postoperative questionnaires. Results. The use of perioperative opioid consumption was significantly lower in the ketamine group when compared with the control group (179.9 ME versus 248.7 ME, P = 0.03 ). There was no statistically significant difference in pain scores or hospital length of stay postoperatively between the two groups. There were also no reported adverse respiratory events, prolonged sedation, agitation, or other side effects reported in either group. The patient satisfaction questionnaires showed a significant difference with the ketamine group reporting lower maximum pain scores, a decrease in how pain limited activities of daily living once discharged, and increased hospital pain management satisfaction scores. Conclusions. Perioperative low-dose ketamine infusions significantly reduced opioid consumption in morbidly obese patients undergoing laparoscopic gastric bypass surgery.

Abstract Objective: To evaluate menopausal symptoms and sexual problems in Hispanic and non-Hispanic women in two Southwest areas. Methods: An anonymous survey including the Green Climacteric Scale (GCS), Female Sexual Function Index (FSFI), and demographics was distributed to English and Spanish-speaking women age 40 to 60 in Scottsdale, Arizona, and West Texas. FSFI for sexually active women and GCS scores for the Hispanic and non-Hispanic women in Texas were analyzed with multivariable analysis and compared between Texas and Arizona for Non-Hispanic participants. Results: Predominantly non-Hispanic women (70%), average age 51.5 (SD = 7.25) completed questionnaires (199 West Texas, 163 Scottsdale). A majority of sexually active women (88%) were found to be at risk of sexual dysfunction. Within the Texas cohort, GCS score was estimated to be 3.49 points lower (less symptoms) in Hispanic versus non-Hispanic participants [95% CI −6.58 to −0.40, P = 0.03], and FSFI score was estimated to be 2.31 points lower (more symptoms) in Hispanic versus non-Hispanic participants [95% CI −4.49 to −0.14, P = 0.04]. Among non-Hispanic women, GCS scores were lower (less symptoms) in Texas versus Arizona by 10.25 points [95% CI −14.83 to −5.66, P < 0.01], while FSFI scores were higher overall (less symptoms) in Texas by 3.65 points [95% CI 0.53-6.77), P = 0.02]. All FSFI and GCS scores were adjusted for multiple variables. Conclusions: In a group of menopausal women from the Southwest, most reported symptoms were consistent with FSD, and the degree of sexual problems appeared to be greater in the Hispanic participants from Texas. Video Summary: http://links.lww.com/MENO/A781.