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Lim S, Reynolds J, Quach H, Hutchinson A, Kerridge I, Janowski W, Bergin K, Spencer A. Response adaptive salvage treatment with daratumumab-lenalidomide-dexamethasone for newly diagnosed transplant-eligible multiple myeloma patients failing front-line bortezomib-based induction therapy-ALLG MM21. Br J Haematol 2024. [PMID: 38850184 DOI: 10.1111/bjh.19578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 05/23/2024] [Indexed: 06/10/2024]
Abstract
In Australia, bortezomib-based induction (V-IND) is used in >90% of newly diagnosed transplant-eligible multiple myeloma (MM) patients. Four cycles of V-IND with bortezomib-cyclophosphamide-dexamethasone or bortezomib-lenalidomide-dexamethasone are available via the Pharmaceutical Benefits Scheme prior to autologous stem cell transplantation (ASCT). Patients who demonstrate suboptimal response or who are refractory to V-IND demonstrate inferior survival, representing a subgroup of MM where an unmet need persists. We evaluated an early, response-adapted approach in these patients by switching to an intensive sequential therapeutic strategy incorporating daratumumab-lenalidomide-dexamethasone-based (DRd) salvage, high-dose melphalan ASCT followed by DRd consolidation and R maintenance. The overall response rate following four cycles of DRd salvage was 72% (95% credible interval: 57.9-82.4); prespecified, dual, Bayesian proof-of-concept criteria were met. Euro-flow minimal residual disease (MRD) negativity was 46% in the intention-to-treat population and 79% in the evaluable population following 12 cycles of DRd consolidation. At the 24-month follow-up, median progression-free survival and overall survival were not reached. DRd salvage was well tolerated with grade 3 and 4 events reported in 24% and 8% respectively. Response-adapted DRd combined with ASCT achieves high rates of MRD negativity and durable disease control in this functional high-risk group.
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Herrera MC, Johnson J, Lim S, Morales KH, Wilson JD, Hadland SE, Metzger D, Wood S, Dowshen N. Co-delivery of HIV pre-exposure prophylaxis (PrEP) and HIV testing among publicly insured adolescents and young adults (AYA) receiving medication for opioid use disorder (MOUD). Drug Alcohol Depend 2024; 257:111132. [PMID: 38387256 PMCID: PMC11031309 DOI: 10.1016/j.drugalcdep.2024.111132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 01/22/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024]
Abstract
BACKGROUND Low rates of HIV pre-exposure prophylaxis (PrEP) prescribing contribute to the disproportionate burden of HIV in the United States. Among adolescent and young adults (AYA) with opioid use disorder, HIV testing and PrEP co-prescription rates are poorly characterized. METHODS We performed a retrospective analysis involving deidentified data from Philadelphia's Medicaid beneficiaries ages 16-29 years who were prescribed medication for opioid use disorder (MOUD) from 2015 to 2020 and continuously Medicaid-enrolled for ≥6 months prior to that prescription. After identifying the presence of a qualifying diagnosis signifying a PrEP indication, we examined the outcome of appropriate PrEP co-prescriptions and HIV testing using generalized estimating equations (GEE) modeling. RESULTS We identified 795 AYA Medicaid beneficiaries with 1269 qualified treatment episodes. We calculated a PrEP prescribing rate of 29.47 per 1000 person-years among AYA receiving MOUD. The HIV testing rate was 63.47 per 1000 person-years among AYA receiving MOUD. GEE modeling revealed that individuals receiving methadone were more likely (aOR=2.62, 95% CI=1.06-6.49) to receive HIV testing within 6 months after a PrEP-qualifying diagnosis compared to those receiving other MOUD medications. Those who only saw outpatient behavioral health providers were less likely (aOR=0.48, 95% CI=0.24-0.99) to have received an HIV test within 6 months after the PrEP-qualifying diagnosis compared to those receiving inpatient behavioral health services. CONCLUSIONS Co-prescription of PrEP and HIV testing among AYA receiving MOUD was rare in this large urban publicly insured population. Interventions are needed to increase HIV prevention services for this key population of AYA at risk for HIV infection.
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Edwards KM, Siller L, LaChance AS, Murphy SB, Lim S. Sowing the Seeds of Recovery: A Qualitative Study of Women in Recovery From Addiction and Victimization. Violence Against Women 2024:10778012241236674. [PMID: 38470496 DOI: 10.1177/10778012241236674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
The purpose of this study was to understand the lived experiences of women with histories of victimization and addiction who were recently admitted to a sober living home (SLH). From the 17 interviews conducted, five themes (i.e., experiences of violence, challenges leaving an abusive relationship, chaos, using substances to cope, and social support) and one constitutive pattern (i.e., sowing the seeds of recovery) emerged from the data. These results highlight the importance of social support in promoting recovery and that social support may foster positive relationships with safe and trustworthy individuals as well as empower and support others with similar experiences.
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Edwards KM, Lim S, Bermea AM, Wheeler LA, Littleton H. The Role of Minority Stress in Psychological Distress and Hazardous Drinking Among Sexual Minority College Student Victims of Intimate Partner Violence. JOURNAL OF INTERPERSONAL VIOLENCE 2024; 39:1058-1081. [PMID: 37791726 DOI: 10.1177/08862605231202239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Sexual minority, individuals who are not heterosexual, college students experience high rates of intimate partner violence (IPV), which is linked to a myriad of deleterious outcomes. However, little work has evaluated whether there are differences in IPV outcomes among sexual minority college students as compared to heterosexual college students. Further, the extent to which minority stress at the institutional and individual level relates to IPV outcomes among sexual minority students is understudied. As such, the purpose of the current study was to evaluate IPV outcomes in a large sample of undergraduate students attending 18 medium- to large-sized universities across the contiguous U.S. Results supported that sexual minority victims of IPV had more anxious and depressive symptoms than heterosexual victims of IPV but were not more likely to engage in hazardous drinking. Further, analyses supported that several campus-level (but not individual-level) indicators of minority stress moderated the relation between IPV victimization and negative outcomes among sexual minority students, such that the association between IPV and negative outcomes was stronger among students embedded in campuses with higher levels of minority stressors. Results support the critical importance of interventions addressing campus-level minority stressors to reduce deleterious IPV outcomes among sexual minority college student victims.
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Littleton H, Edwards KM, Lim S, Wheeler LA, Chen D, Huff M, Sall KE, Siller L, Mauer VA. Examination of the Multilevel Sexual Stigma Model of Intimate Partner Violence Risk Among LGBQ+ College Students: A Prospective Analysis Across Eighteen Institutions of Higher Education. JOURNAL OF SEX RESEARCH 2024:1-16. [PMID: 38323862 DOI: 10.1080/00224499.2024.2311309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Sexual stigma operates at multiple levels (institutional, group, individual), which serves to disadvantage sexual minority (LGBQ+) individuals and increases risk for deleterious outcomes. The current study evaluated a novel multilevel sexual stigma model of intimate partner violence (MLSSM-IPV) that incorporates multiple levels of sexual stigma as related to IPV risk via several pathways (e.g. hazardous drinking, affective symptoms). We evaluated this model in a longitudinal study of LGBQ+ undergraduate college students (n = 2,415) attending 18 universities who completed surveys in the Fall and Spring semesters. Group-level sexual stigma on each campus was assessed via surveys with heterosexual students (n = 8,517) and faculty, staff, and administrators (n = 2,865), and institutional-level stigma was evaluated via a campus climate assessment. At the campus level, institutional stigma was related to LGBQ+ students' self-stigma and identity concealment. Moreover, self-stigma prospectively predicted IPV victimization, and hazardous drinking mediated the relations between self-stigma and IPV perpetration and victimization. Results suggest that interventions addressing stigma and hazardous drinking may be efficacious in reducing IPV among LGBQ+ students. Further, comprehensive efforts to improve campus climate for LGBQ+ students are likely to produce a plethora of benefits for these students.
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Mauer VA, Littleton H, Lim S, Sall KE, Siller L, Edwards KM. Fear of COVID-19, anxiety, and social support among college students. JOURNAL OF AMERICAN COLLEGE HEALTH : J OF ACH 2024; 72:631-638. [PMID: 35325590 DOI: 10.1080/07448481.2022.2053689] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 10/29/2021] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
OBJECTIVE The present study prospectively examined the association between fear of COVID-19 and anxiety and whether social support moderated this association among college students. PARTICIPANTS 1,539 students from 11 universities in the United States completed two online surveys, one prior to the COVID-19 pandemic and one during the pandemic. METHODS Hierarchical linear regressions assessed the impact of COVID-19 fears and social support on anxiety, after accounting for pre-pandemic anxiety and demographics. RESULTS Results supported that adding fear of COVID-19 to the regression model resulted in a significant increase in variance explained over demographics and pre-pandemic anxiety. Social support did not moderate the association between fear of COVID-19 and anxiety. CONCLUSION These data underscore the mental health impact of COVID-19 on students and the urgency with which campus-wide initiatives are needed to support students during this unprecedented time.
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Ooi LC, Ho V, Zhu JZ, Lim S, Chung L, Abubakar A, Rutland T, Chua W, Ng W, Lee M, Morgan M, MacKenzie S, Lee CS. p21 as a Predictor and Prognostic Indicator of Clinical Outcome in Rectal Cancer Patients. Int J Mol Sci 2024; 25:725. [PMID: 38255799 PMCID: PMC10815780 DOI: 10.3390/ijms25020725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/25/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024] Open
Abstract
The cell cycle plays a key and complex role in the development of human cancers. p21 is a potent cyclin-dependent kinase inhibitor (CDKI) involved in the promotion of cell cycle arrest and the regulation of cellular senescence. Altered p21 expression in rectal cancer cells may affect tumor cells' behavior and resistance to neoadjuvant and adjuvant therapy. Our study aimed to ascertain the relationship between the differential expression of p21 in rectal cancer and patient survival outcomes. Using tissue microarrays, 266 rectal cancer specimens were immunohistochemically stained for p21. The expression patterns were scored separately in cancer cells retrieved from the center and the periphery of the tumor; compared with clinicopathological data, tumor regression grade (TRG), disease-free, and overall survival. Negative p21 expression in tumor periphery cells was significantly associated with longer overall survival upon the univariate (p = 0.001) and multivariable analysis (p = 0.003, HR = 2.068). Negative p21 expression in tumor periphery cells was also associated with longer disease-free survival in the multivariable analysis (p = 0.040, HR = 1.769). Longer overall survival times also correlated with lower tumor grades (p= 0.011), the absence of vascular and perineural invasion (p = 0.001; p < 0.005), the absence of metastases (p < 0.005), and adjuvant treatment (p = 0.009). p21 expression is a potential predictive and prognostic biomarker for clinical outcomes in rectal cancer patients. Negative p21 expression in tumor periphery cells demonstrated significant association with longer overall survival and disease-free survival. Larger prospective studies are warranted to investigate the ability of p21 to identify rectal cancer patients who will benefit from neoadjuvant and adjuvant therapy.
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Habashy P, Lea V, Wilkinson K, Wang B, Wu XJ, Roberts TL, Ng W, Rutland T, Po JW, Becker T, Descallar J, Lee M, Mackenzie S, Gupta R, Cooper W, Lim S, Chua W, Lee CS. KRAS and BRAF Mutation Rates and Survival Outcomes in Colorectal Cancer in an Ethnically Diverse Patient Cohort. Int J Mol Sci 2023; 24:17509. [PMID: 38139338 PMCID: PMC10743527 DOI: 10.3390/ijms242417509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023] Open
Abstract
KRAS and BRAF mutation rates in colorectal cancer (CRC) reported from various mono-ethnic studies vary amongst different ethnic groups. However, these differences in mutation rates may not be statistically significant or may be due to differences in environmental and/or laboratory factors across countries rather than racial genetic differences. Here, we compare the KRAS/BRAF mutation rates and survival outcomes in CRC between ethnic groups at a single institution. We also investigate the contributions of genetic, environmental, and laboratory factors to the variations in KRAS/BRAF mutation rates reported from different countries. Clinicopathological data from 453 ethnically diverse patients with CRC were retrospectively analyzed at Liverpool Hospital, NSW Australia (2014-2016). KRAS/BRAF mutations were detected using real-time PCR (Therascreen kits from Qiagen). Mismatch repair (MMR) status was determined using immunohistochemical staining. Four ethnic groups were analyzed: Caucasian, Middle Eastern, Asian, and South American. Overall survival data were available for 406 patients. There was no significant difference in KRAS mutation rates between Caucasians (41.1%), Middle Easterners (47.9%), Asians (44.8%), and South Americans (25%) (p = 0.34). BRAF mutation rates differed significantly between races (p = 0.025), with Caucasians having the highest rates (13.5%) and Middle Easterners the lowest (0%). A secondary analysis in which Caucasians were divided into three subgroups showed that ethnic grouping correlated significantly with KRAS mutation rate (p = 0.009), with central and eastern Europeans having the highest rates (58.3%). There were no significant differences in overall survival (OS) or disease-free survival (DFS) between the four races. The similarity in KRAS mutation rates across races raises the possibility that the differences in KRAS mutation rates reported from various countries may either not be statistically significant or may be due to environmental and/or laboratory factors rather than underlying racial genetic differences. In contrast, we verified that BRAF mutation rates differ significantly between races, suggesting racial genetic differences may be responsible for the discrepant BRAF mutation rates reported from different countries.
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Lee MW, Lim S, Jeong W, Kim S, Kim JH, Hwang YS, Sung C. Electron Temperature Measurements Using a Two-Filter Soft X-ray Array in VEST. SENSORS (BASEL, SWITZERLAND) 2023; 23:8357. [PMID: 37896452 PMCID: PMC10610578 DOI: 10.3390/s23208357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/01/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023]
Abstract
A multichannel soft X-ray (SXR) array has been developed to measure the electron temperature in the Versatile Experiment Spherical Torus (VEST). To estimate electron temperature using the two-filter method applied to SXR intensity, we designed a pinhole camera that has two photodiode arrays with different metallic filters. We also adopted a filter wheel and tested various filter parameters to find the optimal filter set. Through tests, the combination of aluminum and beryllium was found to be the most suitable for the current experimental conditions in VEST. The filtered SXR signals were acquired with a low-noise preamplifier, exhibiting sufficient signal-to-noise ratios for electron temperature estimation based on the intensity ratio of two signals obtained with different filters. The estimated electron temperature from the developed two-filter SXR array showed reasonably matched levels and consistent trends with Thomson scattering measurements. Error contribution from impurity line emission is also discussed.
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Sabol R, Prionas ND, Calvin C, Pelayo L, Randolph H, Lim S, Devincent C, Ohliger M, Villanueva-Meyer J, Scholey J, Singer L. Impact of Workflow and Educational Interventions on MR Safety in Radiation Oncology. Int J Radiat Oncol Biol Phys 2023; 117:e432-e433. [PMID: 37785410 DOI: 10.1016/j.ijrobp.2023.06.1599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Magnetic resonance imaging (MRI) is becoming increasingly integrated into radiation oncology (RO) departments with the use of MRI-Linacs and MRI simulation. Due to the number of implants in patients with cancer, adoption of comprehensive patient screening and MR safety workflows in RO is critical. Identifying MR unsafe implants only at the time of MRI simulation leads to same-day cancellations, potentially delaying treatment, and can risk MR safety events (SEs). This quality improvement study evaluated the impact of workflow and educational interventions on MR safety in RO at a single institution. MATERIALS/METHODS In an effort to decrease same-day cancellations and improve safety surrounding use of a 3 Tesla MRI simulator at an academic center, three plan-see-do-act (PDSA) cycles were implemented from 4/18/22 - 1/19/23. MR safety oversight for the simulator was provided by a multidisciplinary team, with input from both radiology and RO. PDSA cycle 1 implemented a two-screen functional workflow, adapted from radiology at the same institution. The first screen is completed by the practice coordinator (PC) at the time of scheduling to triage high-risk patients into a work queue (WQ) for further evaluation by the MR safety team. The second screen is performed by the MR technologist (MRT) at the point of care. PDSA cycle 2 involved education for PCs. PDSA cycle 3 was a second PC educational intervention including a visual aide to assist with WQ use. Efficacy was determined by the number of same-day cancellations, patients in the WQ (a measure of the number of patients identified at the initial screen as having an implant), and SEs in each PDSA cycle. RESULTS PDSA cycle 1 spanned 56 workdays during which 91 MR simulations were scheduled with 6 cancellations (6.5%). PDSA cycle 2 spanned 84 days during which 173 MR simulations were scheduled with 18 cancellations (10.4%). PDSA cycle 3 spanned 39 workdays and had 94 MR simulations, with 7 cancellations (7.4%). The cancellation rate during each PDSA cycle was 0.11, 0.21, and 0.17 cancellations/day, respectively. The number of patients in the WQ during each PDSA cycle, representing successfully screened high-risk patients, was 0, 0, and 3, respectively. There were no SEs during the study. CONCLUSION In this study, an MR safety workflow from radiology was successfully implemented in RO. There were no SEs during the study, but the number of patients successfully screened as high-risk and placed in the WQ increased after repeat PC education. Further increases in WQ use would decrease the demand for implant assessment at point of care, which could decrease burden on the MRT, same day cancellations, and potentially SEs. This will be especially important if case load increases. Future work could expand educational efforts to additional staff.
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Zanolli NC, Lim S, Knechtle W, Feng K, Truong T, Havrileskey LJ, Davidson BA. Implementation of a validated post-operative opioid nomogram into clinical gynecologic surgery practice: A quality improvement initiative. Gynecol Oncol Rep 2023; 49:101260. [PMID: 37655046 PMCID: PMC10465856 DOI: 10.1016/j.gore.2023.101260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/09/2023] [Accepted: 08/12/2023] [Indexed: 09/02/2023] Open
Abstract
Objectives The Gynecologic Oncology Postoperative Opioid use Predictive (GO-POP) calculator is a validated tool to provide evidence-based guidance on post-operative opioid prescribing. The objective of this study was to evaluate the impact of the implementation of GO-POP within an academic Gynecologic Oncology division. Methods Two cohorts of patients (pre-implementation and post-implementation) who underwent surgery were compared with reference to GO-POP calculator implementation. All patients were included in the post-implementation group, regardless of GO-POP calculator use. An additional expanded-implementation cohort was used to compare pain control between GO-POP users and non-GO-POP users prospectively. Wilcoxon rank sum tests or ANOVA for continuous variables and Chi-square or Fisher's exact tests were used to categorical variables. Results The median number of pills prescribed post-operatively decreased from 15 pills (Q1: 10, Q3: 20) to 10 pills (Q1: 8, Q3: 14.8) after implementation (p < 0.001). In the expanded-implementation cohort (293 patients), 41% patients were prescribed opioids using the GO-POP calculator. An overall median of 10 pills were prescribed with no difference by GO-POP calculator use (p = 0.26). Within the expanded-implementation cohort, refill requests (5% vs 9.2%; p = 0.26), clinician visits (0.8% vs 0.6%, p = 1), ED or urgent care visits (0% vs 2.3%, p = 0.15) and readmissions (0% vs 1.7%, p = 0.27) for pain did not differ between those prescribed opioids with and without the GO-POP calculator. Conclusions A 33% reduction in post-operative opioid pills prescribed was seen following implementation of the GO-POP calculator into the Gynecologic Oncology division without increasing post-operative pain metrics or encounters for refill requests.
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Huff M, Edwards KM, Mauer VA, Littleton H, Lim S, Sall KE. Gender-neutral bathrooms on campus: a multicampus study of cisgender and transgender and gender diverse college students. JOURNAL OF AMERICAN COLLEGE HEALTH : J OF ACH 2023:1-5. [PMID: 37531166 DOI: 10.1080/07448481.2023.2239358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Objective: This study examined cisgender and transgender and gender diverse (TGD) college students' perceptions of gender-neutral bathroom availability across eight U.S. campuses, TGD students' fear of harassment related to (lack of) availability of gender-neutral bathrooms, and the relation between fear of harassment and TGD students' psychological distress. Methods: Participants were 4,328 college students (4,195 cisgender, 30 binary transgender, 103 gender diverse) from eight U.S. institutions of higher education. Results: The majority (84.2%) of TGD students and 34.6% of cisgender students perceived there were too few gender-neutral bathrooms on their campus. Further, TGD students' fear of harassment related to a lack of availability of gender-neutral bathrooms on campus was positively associated with psychological distress (i.e., symptoms of depression and anxiety). Conclusion: This study highlights the significance of increasing accessibility of gender-neutral bathrooms on campuses to help mitigate TGD students' fear of harassment and psychological distress.
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Edwards KM, Lim S, Huff M, Herrington R, Leader Charge L, Littleton H. Rates and Correlates of Intimate Partner Violence Among Indigenous College Students: A Multi-Campus Study. JOURNAL OF INTERPERSONAL VIOLENCE 2023; 38:7852-7866. [PMID: 36714950 DOI: 10.1177/08862605221150945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Research suggests that Indigenous girls, women, and LGBTQ+ Two-Spirit people experience disproportionately high rates of intimate partner violence (IPV), but there is a dearth of research on IPV among Indigenous college students. Therefore, the current study sought to explore rates of IPV victimization and perpetration among Indigenous college students, as well as correlates including depressive and anxious symptoms, emotion dysregulation, on-campus social support, and hazardous drinking. Participants were 230 undergraduate students who identified as American Indian/Alaska Native attending 20 medium- and large-sized universities across the contiguous U.S. Results indicated that 28.9% of Indigenous students reported any type of IPV victimization in the past 6 months (psychological: 24.5%; physical: 9.1%; sexual: 9.8%; coercive control: 12.4%). Further, 18.3% of Indigenous students reported any type of IPV perpetration in the past 6 months (psychological: 16.9%; physical: 4.5%; sexual: 2.6%; coercive control: 7.1%). Anxious and depressive symptoms were related to many forms of IPV victimization; emotion dysregulation was related to all forms of IPV victimization and sexual IPV perpetration; and hazardous drinking was related to most forms of IPV victimization and perpetration. These findings underscore the alarmingly high rates of IPV among Indigenous college students as well as the potential deleterious effects of IPV victimization on psychological functioning, as well as the need to concurrently address hazardous alcohol use in IPV prevention and response efforts.
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Yoon R, Wilkinson K, Gabriel G, Kadaan N, Roberts T, Lim S, Asghari R, Lee CS, Chua W, Ng W. Real-world tolerance and outcomes of oxaliplatin-based adjuvant chemotherapy for stage III colon cancer-Does dose intensity matter? Asia Pac J Clin Oncol 2023. [PMID: 37211922 DOI: 10.1111/ajco.13965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 02/09/2023] [Accepted: 04/02/2023] [Indexed: 05/23/2023]
Abstract
INTRODUCTION Fluoropyrimidine and oxaliplatin-based adjuvant chemotherapy delivered as 5-fluorouracil, leucovorin and oxaliplatin (FOLFOX), or capecitabine and oxaliplatin (CAPOX) is the standard of care for resected stage III colon cancer. Without randomized trial data, we compared real-world dose intensity, survival outcomes, and tolerability of these regimens. METHODS Records of patients treated with FOLFOX or CAPOX in the adjuvant setting for stage III colon cancer across four institutions in Sydney during 2006-2016 were reviewed. The relative dose intensity (RDI) of fluoropyrimidine and oxaliplatin of each regimen, disease-free survival (DFS), overall survival (OS), and incidence of grade ≥2 toxicities were compared. RESULTS Characteristics of patients receiving FOLFOX (n = 195) and CAPOX (n = 62) were evenly matched. FOLFOX patients had a higher mean RDI for both fluoropyrimidine (85% vs. 78%, p < 0.01) and oxaliplatin (72% vs. 66%, p = 0.06). In spite of a lower RDI, CAPOX patients trended toward a better 5-year DFS (84% vs. 78%, HR = 0.53, p = 0.068) and similar OS (89% vs. 89%, HR = 0.53, p = 0.21) compared to the FOLFOX group. This difference was most pronounced in the high-risk (T4 or N2) group where 5-year DFS was 78% versus 67% (HR = 0.41, p = 0.042). Patients receiving CAPOX experienced more grade ≥2 diarrhea (p = 0.017) and hand-foot syndrome (p < 0.001) but not peripheral neuropathy or myelosuppression. CONCLUSION In a real-world setting, patients who received CAPOX had similar OS rates when compared to those receiving FOLFOX in the adjuvant setting in spite of lower RDI. In the high-risk population, CAPOX appears to demonstrate a superior 5-year DFS over FOLFOX.
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Lim S, Jacques F, Babaki S, Babaki Y, Simard S, Kalavrouziotis D, Mohammadi S. Preoperative physical frailty assessment among octogenarians undergoing cardiac surgery: Upgrading the "eyeball" test. J Thorac Cardiovasc Surg 2023; 165:1473-1483.e9. [PMID: 33965218 DOI: 10.1016/j.jtcvs.2021.02.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 02/20/2021] [Accepted: 02/23/2021] [Indexed: 01/27/2023]
Abstract
OBJECTIVES There are many well-described, but as yet unproven, physical ability tools to assess frailty. The objective of this study was to evaluate the effectiveness of 4 preoperative physical tests in predicting mortality, morbidity, and functional outcomes among octogenarians undergoing cardiac surgery. METHODS Between 2016 and 2019, 200 patients aged 80 years or more undergoing elective cardiac surgery were prospectively recruited. Four physical tests were performed preoperatively: 5-m walk time, timed up-and-go, 5 time sit-to-stand, and handgrip strength tests. The primary end point was a composite of in-hospital mortality, neurologic, and pulmonary complications. Multivariate analysis was performed. RESULTS In-hospital mortality was 1.5%. Slow performance on the 5-m walk test (time ≥6.4 seconds) was the only independent predictor of the composite end point among the tests evaluated (odds ratio, 2.70; 95% confidence interval, 1.34-5.45; P = .006). At follow-up, patients with a slow 5-m walk test had a significantly lower midterm survival compared with patients with a normal test result (1-year survival 91.5% vs 98.7%, log-rank P = .03). Mean Physical and Mental Component Scores of the 12-item short form survey were 47.2 ± 8.3 and 53.6 ± 5.9, respectively, which are comparable to those of a general population aged more than 75 years. CONCLUSIONS The 5-m walk time test is an independent predictor of a composite of in-hospital mortality and major morbidity, as well as midterm survival. This test could be used as a simple adjunctive preoperative tool for octogenarians undergoing cardiac surgery.
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Poloni C, Sze A, Wang X, Lim S, Steiner T. A36 INVESTIGATING TYPE 1 REGULATORY T CELLS AS A THERAPY FOR INFLAMMATORY BOWEL DISEASE USING A MOUSE MODEL OF ACUTE INTESTINAL EPITHELIAL DAMAGE. J Can Assoc Gastroenterol 2023. [PMCID: PMC9991133 DOI: 10.1093/jcag/gwac036.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Background Inflammatory bowel disease (IBD) affects an estimated 270,000 people in Canada and is rapidly increasing in prevalence. All patients have relapsing disease, and a subset of individuals do not respond to current treatments. Further, there are no approved treatment options in Canada that reverse IBD-induced intestinal fibrosis. We have previously shown type 1 regulatory cells (Tr1s) are capable of suppressing inflammatory macrophages, promote barrier function of human intestinal epithelial cells, and induce differentiation of mucin-producing goblet cells. We hypothesize that Tr1 cells can prevent inflammatory damage and fibrosis in an mouse model of acute gut damage. Purpose We hypothesize that Tr1 cells can prevent inflammatory damage and fibrosis in an mouse model of gut damage. Here we evalute the therapeutic potential of Tr1 cells in an model of acute intestinal epithelial damage. Method Tr1 cells were isolated and expanded from CD4+ CD44high FOXP3- cells. Their phenotype was characterized by flow cytometry and cytokine secretion was measured via ELISA. WT B6 mice were given 2% DSS in H2O for 7 days, followed by H2O alone for 7 days. Prior to DSS treatment, mice were sub-lethally irradiated to facilitate engraftment, and given I.P. injections of PBS or 0.5 – 2 x 106 Tr1 cells. Mice weights and health scores were recorded daily. At the endpoint, blood, spleen, and mesenteric lymph nodes were analyzed for Tr1 cell engraftment (or lack thereof) for each mouse. Complete white blood counts were performed for each mouse. Additionally, proximal, medial, and distal portions of the ileum were processed for histologic scoring. Result(s) Tr1 cells isolated from CD4+ CD44high FOXP3- cells produce high levels of IL-10 following stimulation (>35,000 pg/ml/1 x 105 cells). Additionally, these cells express high levels of Tr1 markers CD49b and Lag-3. Optimization experiments indicated no significant differences between mice irradiated and given DSS and mice only given DSS (no irradiation). Our results suggest no significant differences in inflammatory cell infiltrate scores between control and Tr1 treated mice. However, gut architecture scores appeared to improve with increasing Tr1 doses. Further, weight change improved with Tr1 treatment, as compared to PBS controls. Interestingly, Tr1 treatment appeared to decrease total eosinophil and neutrophil counts from peripheral blood. Conclusion(s) Our initial findings indicate Tr1 adoptive transfer prior to acute damage via DSS improves gut damage and weight loss. Please acknowledge all funding agencies by checking the applicable boxes below CIHR Disclosure of Interest None Declared
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Greig LC, Woodworth MB, Poulopoulos A, Lim S, Macklis JD. BEAM: a combinatorial recombinase toolbox for binary gene expression and mosaic analysis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.16.528875. [PMID: 36824714 PMCID: PMC9949094 DOI: 10.1101/2023.02.16.528875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Genetic mosaic analysis, in which mutant cells reside intermingled with wild-type cells, is a powerful experimental approach, but has not been widely used in mice because existing genome-based strategies require complicated and protracted breeding schemes. We have developed an alternative approach termed BEAM (for Binary Expression Aleatory Mosaic) that relies on sparse recombinase activation to generate two genetically distinct, non-overlapping populations of cells for comparative analysis. Following delivery of DNA constructs by transfection or viral transduction, combinatorial recombinase activity generates two distinct populations of cells labeled with either green or red fluorescent protein. Any gene of interest can be mis-expressed or deleted in one population for comparison with intermingled control cells. We have extensively optimized and characterized this system both in vitro and in vivo , and demonstrate its power for investigating cell autonomy, identifying temporally or spatially aberrant phenotypes, revealing changes in cell proliferation or death, and controlling for procedural variability.
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Lim S, Meredith S, Agnew S, Clift E, Ibrahim K, Roberts HC. 1323 VOLUNTEER-LED ONLINE GROUP EXERCISE FOR OLDER ADULTS: A FEASIBILITY AND ACCEPTABILITY STUDY. Age Ageing 2023. [DOI: 10.1093/ageing/afac322.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Abstract
Introduction
The health benefits of physical activity for older people are well recognised and include reduction in falls, improvement in frailty status and physical function. Nonetheless, physical inactivity remains a significant problem among older adults. This study aimed to determine the feasibility and acceptability of implementing online volunteer-led group exercise for community-dwelling older adults.
Methods
This pre-post mixed methods study was conducted among older adults attending community social clubs. Eligible participants were aged ≥ 65 years, able to walk independently, and able to provide written consent. The intervention consisted of a once weekly volunteer-led online group chair-based exercise. The primary outcomes were the feasibility and acceptability of the intervention. Secondary outcomes included physical activity levels measured using the Community Health Model Activities Program for Seniors (CHAMPS) questionnaire, functional status (Barthel Index), and health-related quality of life (EQ-5D-5L). Outcomes were measured at baseline and at 6 months. Trials registration: NCT04672200.
Results
Nineteen volunteers were recruited, 15 completed training and 9 were retained (mean age 68 years, 7 female). Thirty participants (mean age 77 years, 27 female) received the intervention and attended 54% (IQR 37-67) of exercise sessions. One minor adverse event was reported. Participants had no significant changes in secondary outcome measures, with a trend towards improvement in physical activity levels. The intervention was acceptable to volunteers, participants, and staff. The seated exercises were perceived as safe, manageable and enjoyable. Volunteers were relatable role models providing positive vicarious experiences that improved participants confidence to exercise within a friendly, non-judgmental environment. Technological issues, or reluctance to learn how to use technology were barriers to the intervention. The social interactions and sense of belonging motivated participation.
Conclusions
Trained volunteers can safely deliver online group exercise for community-dwelling older adults and the intervention was feasible and acceptable to older adults, volunteers and club staff.
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Makama M, Brown WJ, Lim S, Skouteris H, Harrison CL, Joham AE, Mishra GD, Teede H, Moran LJ. Levels of physical activity and sitting time in women with infants, toddlers and preschoolers: a population-based cross-sectional study. Public Health 2023; 214:1-9. [PMID: 36417813 DOI: 10.1016/j.puhe.2022.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/29/2022] [Accepted: 10/14/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVES Insufficient physical activity (PA) and prolonged sitting time (ST) increase the risk of chronic disease and mortality. Caring for young children can potentially impact maternal PA and sedentary behaviours. The aims of this study were to explore the levels of PA and ST in women with young children (infants, toddlers and preschoolers) and sociodemographic and behavioural factors associated with these. STUDY DESIGN This was a population-based cross-sectional study. METHODS Survey 5 data collected in 2009 (n = 4290) of the 1973-1978 birth cohort of the Australian Longitudinal Study on Women's Health were used. Multiple linear and logistic regression models were used to examine associations. RESULTS In adjusted models, compared with women with preschoolers, women whose youngest child was an infant aged 0-6 months, aged >6-12 months or toddler had lower PA (-321.3 MET.min/week [95% confidence interval (CI) -416.2, -226.4], -147.9 MET.min/week [95% CI -237.6, -58.1] and -106.4 MET.min/week [95% CI -172.3, -40.5]). ST was higher in women whose youngest child was an infant aged 0-6 months (0.48 h/day; 95% CI 0.19, 0.77) but lower with infants aged >6-12 months (-0.33 h/day; 95% CI -0.60, -0.05) and toddlers (-0.40 h/day; 95% CI -0.60, -0.20) than in those with preschoolers. The findings were similar in the logistic model. Sociodemographic and behavioural factors such as occupation and marital status also influenced PA and ST. CONCLUSIONS Women with infants and toddlers have lower PA than women with preschoolers. Women are more likely to sit more in the first 6 months after childbirth. These findings can inform resources and intervention development to improve activity levels in women with young children through consideration of the age of the youngest child, sociodemographic and behavioural factors.
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Bae K, Lamoury G, Carroll S, Morgia M, Lim S, Baron-Hay S, Shin IS, Park SJ, Oh B. Comparison of the clinical effectiveness of treatments for aromatase inhibitor-induced arthralgia in breast cancer patients: A systematic review with network meta-analysis. Crit Rev Oncol Hematol 2023; 181:103898. [PMID: 36535489 DOI: 10.1016/j.critrevonc.2022.103898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Aromatase inhibitor-induced arthralgia (AIA) contributes to poor adherence of aromatase inhibitor therapies in patients with breast cancer. A systematic review using network meta-analysis (NMA) was conducted to examine the clinical effectiveness of multiple therapies and rank probabilities for the management of AIA. Randomized controlled trials (RCTs) assessing treatments for AIA in postmenopausal women with stage 0-III hormone receptor-positive breast cancer were searched from inception to October 2021. The main NMA involved 1516 participants from 17 RCTs. Acupuncture was the highest ranked intervention to improve pain intensity followed by sham acupuncture, multicomponent herbal medicine, exercise, duloxetine, vitamin D, omega-3 fatty acids, physical therapy, testosterone, and inactive controls. Single natural products were inferior to controls. The current review provides new insights into the management of AIA in breast cancer survivors for increased survival and can be utilized to make evidence-based decisions regarding treatment.
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Choy S, Paolino A, Kim B, Lim S, Seo J, Tan S, Tan W, Corbett M, Barker J, Lynch M, Smith C, Mahil S. 100 Deep learning image analyses in dermatology, beyond skin lesions: a systematic review. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Toh K, Zhao X, Kim J, Stratton G, Lin HW, Lee D, Yoon S, Fang YF, Chang KC, Stirling R, Zalcberg J, Jung H, Yu H, Lim S, Lim S, Chou KP, J.A. kim, Patel D, Kleinman N. 349P EXPLORE-LC: A multi-site real-world evidence research platform for non-small cell lung cancer in Asia-Pacific. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
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Kim JH, Franchin L, Hong SJ, Cha JJ, Lim S, Joo HJ, Park JH, Yu CW, Ahn TH, Lim DS, Dascenzo F. The long-term cardiac events after coronary bifurcation stenting with second-generation drug-eluting stents in elderly patients are comparable to those of younger patients. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Elderly patients undergoing percutaneous coronary intervention (PCI) generally have a high risk of adverse clinical outcomes. We investigated the long-term clinical impact of PCI on coronary bifurcation disease in elderly patients in Korea and Italy.
Methods
From the BIFURCAT (comBined Insights from the Unified RAIN and COBIS bifurcAtion regisTries) data, we evaluated 5,537 patients who underwent PCI for coronary bifurcation disease. The primary outcome was major adverse cardiac events (MACEs), defined as the composite of target vessel myocardial infarction, target lesion revascularisation, and stent thrombosis. Kaplan–Meier estimates and Cox proportional hazard models were used to compare elderly patients (aged ≥75 years) and younger patients (aged <75 years).
Results
A total of 1,415 patients (26%) were aged ≥75 years. Elderly patients were more frequently female, had higher rates of hypertension and chronic kidney disease (CKD), and presented more frequently with left main (LM) disease. After a median follow-up of 2.1 years, MACEs were comparable between elderly and younger patients. In multivariable analysis, old age was not an independent predictor of MACEs (p=0.977). In elderly patients, CKD and LM disease were independent predictors of MACEs, whereas in younger patients, hypertension, diabetes, CKD, reduced left ventricular ejection fraction, LM disease, and two-stent strategy usage were independent predictors.
Conclusions
Elderly patients who underwent coronary bifurcation PCI with second-generation drug-eluting stents demonstrated similar clinical outcomes to those of younger patients. Both CKD and LM disease were independent predictors of MACEs, regardless of age after coronary bifurcation PCI.
Funding Acknowledgement
Type of funding sources: None.
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Lim S, Yu CW, Kim JH, Cha JJ, Kook HD, Joo HJ, Park JH, Choi CU, Hong SJ, Lim DS. The differential effects of antihypertensive drugs on central blood pressure: nebivolol versus telmisartan (ATD-CBP). Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Central blood pressure and central pulse pressure have a better correlation with the risk of cardiovascular disease compared to those of peripheral measurement. In a previous study, a second-generation beta-blocker showed poor CBP-lowering effects. However, the effect on CBP by third-generation beta-blockers is not fully elucidated. Thus, this randomised study investigated whether nebivolol-based hypertension treatment may confer advantages over telmisartan, an angiotensin II receptor-blocker, in reducing CBP.
Methods
This was a prospective, randomised, multicentre, open-label, controlled trial that evaluated 98 hypertensive patients. Patients received either nebivolol- (N=49) or telmisartan-based (N=49) treatment for hypertension for 12 weeks with a target BP of ≤140/80. The primary outcome was the difference in change from baseline central systolic BP (cSBP) after 12 weeks.
Results
There were no significant differences between the two groups in baseline central and peripheral SBP. The mean change in cSBP from baseline (ΔcSBP) was −17.2±3 mmHg for nebivolol group (P<0.001) and −29.9±3 mmHg for telmisartan group (P<0.001). The difference in ΔcSBP between the two groups was significant (12.7mmHg, 95% confidence interval [CI], 4.13 to 21.2; P=0.004). Peripheral SBP (pSBP) decreased less in nebivolol group compared to telmisartan group (−18.0±3 in nebivolol group vs. −26.3±3 in telmisartan group, P=0.032). After adjusting for reduction in pSBP, reduction in cSBP was higher in telmisartan group compared to nebivolol group, as shown by the ratio of changes in cSBP and pSBP (ΔcSBP/ΔpSBP; 0.67 for nebivolol group vs. 1.11 for telmisartan group, P=0.080), albeit without statistical significance.
Conclusions
Nebivolol-based hypertension treatment may have less potent CBP-lowering effects compared to telmisartan. However, larger-scale studies are warranted to further elaborate our findings.
Funding Acknowledgement
Type of funding sources: None.
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Bae SA, Cha JJ, Kim SW, Lim S, Kim JH, Joo HJ, Park JH, Park SM, Hong SJ, Yu CW, Lim DS, Jeong MH, Ahn TH. Effect of an early invasive strategy based on time of symptom onset in patients with non-ST elevation myocardial infarction. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
A limitation of the current guidelines of the timing of invasive coronary angiography (ICA) for patients with non-ST-segment elevation (NSTE) acute coronary syndrome is based on randomization time. So far, no study has reported the clinical outcomes of invasive strategy timing based on the time of symptom onset. Herein, we aimed to investigate the effect of invasive strategy timing from the time of symptom onset on the 3-year clinical outcomes of patients with NSTE myocardial infarction (MI).
Methods and results
Among 13,104 patients from the Korea Acute Myocardial Infarction Registry-National Institutes of Health, we evaluated 5,856 patients with NSTEMI. The patients were categorized according to symptom-to-catheter (StC) time (<48 h and ≥48 h). The primary outcome was 3-year all-cause mortality, and the secondary outcome was a 3-year composite of all-cause mortality, recurrent MI, and hospitalization for heart failure. Overall, 3,919 (66.9%) patients were classified into the StC time <48 h group. This group had lower all-cause mortality than the StC time ≥48 h group (7.3% vs. 13.4%, p<0.001). The continuous association of StC time and risk of primary and secondary endpoints showed shorter StC time (reference: 48 h), and lower adjusted hazard ratio reduction was observed. In multivariable analysis, independent predictors of delayed ICA were older age, non-specific symptoms, no use of emergency medical services, no ST-segment deviation, chronic kidney disease, and Global Registry of Acute Coronary Events score >140.
Conclusion
Early invasive strategy based on the StC time improves all-cause mortality in patients with NSTEMI.
Funding Acknowledgement
Type of funding sources: None.
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