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Exploring Impostor Phenomenon During Pre-Clerkship Period in Military Medical School. 军医学生见习前的冒名顶替现象探析
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-23 DOI: 10.1093/milmed/usaf373
Eungjae Kim, Jinbum Dupont, Steven J Durning, Jezreelyn Bulaklak, Abigail Crosier, Michael Soh
{"title":"Exploring Impostor Phenomenon During Pre-Clerkship Period in Military Medical School.","authors":"Eungjae Kim, Jinbum Dupont, Steven J Durning, Jezreelyn Bulaklak, Abigail Crosier, Michael Soh","doi":"10.1093/milmed/usaf373","DOIUrl":"https://doi.org/10.1093/milmed/usaf373","url":null,"abstract":"<p><strong>Purpose: </strong>impostor phenomenon (IP) is defined as an experience where individuals attribute their success to chance or luck and not to their mastery of skills, which is commonly experienced within competitive environments such as medical school. Building on a prior study on IP during onboarding, the purpose of this study is to examine IP experiences throughout the pre-clerkship curriculum and provide insights into the possible evolution of IP during the initial 16 months of a military medical school.</p><p><strong>Materials and methods: </strong>The study participants were second-year medical students at a military medical school who had previously participated in an initial IP study at the beginning of their first year of medical school. Researchers conducted semi-structured interviews in December 2023 to explore how students' experience with the IP changed after their pre-clerkship education, and qualitative thematic analysis was conducted. Scores from the Clance Impostor Phenomenon Scale (CIPS) during onboarding and at the end of the pre-clerkship period were compared.</p><p><strong>Results: </strong>Researchers interviewed 21 of the original 29 matriculated military medical students who completed the initial study. Fifteen students (71.4%) reported frequent or intense IP experiences on the CIPS indicating that IP remained present in the study sample. Average CIPS scores from onboarding and end of pre-clerkship were 68.3 and 68.1, respectively, suggesting that the intensity of IP remained stable. Thematic analysis of interview transcripts identified 6 themes that influenced students' experience with IP: academic progress, military medical expectations, self-comparison, relationship dynamics and building relationships, extracurricular engagement and roles, and navigating uncertainty. Theme saturation was reached at n = 15.</p><p><strong>Conclusion: </strong>Although the intensity of IP remained relatively stable from onboarding to the end of pre-clerkship, the underlying themes driving IP evolved as students transitioned into active participation in undergraduate medical training. Similar to the initial IP study, situated learning theory continued to offer a valuable framework for understanding these shifts, particularly through relationships with peers and upperclassmen. Future research incorporating mixed methods could further clarify how qualitative shifts in IP correspond to variations in CIPS scores. As participants advance into clerkship rotations, we anticipate continued evolution in IP experiences, warranting further longitudinal exploration.</p>","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144699015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diagnosis and Treatment of a Sports-Related Morel Lavallée Lesion With Point-of-Care Ultrasound: A Case Study. 用即时超声诊断和治疗运动相关的莫雷尔-拉瓦尔-海姆病:一例病例研究。
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-23 DOI: 10.1093/milmed/usaf378
Ellis Bronstein, Savannah Kounelis-Wuillaume, Colby MaGill, Jeffrey C Leggit
{"title":"Diagnosis and Treatment of a Sports-Related Morel Lavallée Lesion With Point-of-Care Ultrasound: A Case Study.","authors":"Ellis Bronstein, Savannah Kounelis-Wuillaume, Colby MaGill, Jeffrey C Leggit","doi":"10.1093/milmed/usaf378","DOIUrl":"https://doi.org/10.1093/milmed/usaf378","url":null,"abstract":"<p><p>Morel-Lavallée lesions (MLLs) are closed degloving injuries that result in inter-fascial hemolymphatic collections. These lesions develop as a result of shearing forces in the deep fascial planes and often arise in the context of significant high-velocity traumas. However, they are often underdiagnosed, especially in the case of atypical presentations such as sports or low-impact injuries. Here we present a case of MLL following a fall from a bike at low speed that resulted in a large area of soft-tissue ecchymosis and swelling that would not resolve following conservative treatment. Point-of-care ultrasound (POCUS) was used to diagnose and guide interventional treatment via ultrasound-guided drainage of the fluid collection. This case is informative as it serves as a reminder for providers to always consider MLL in the differential diagnosis of soft tissue injuries. It additionally demonstrates how POCUS can help identify and assist in management of MLLs in the primary care setting.</p>","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144699014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Changes in Emergency General Surgery Volume Within Military Treatment Facilities (2016-2023). 2016-2023年军队医疗设施急诊普外科业务量变化分析
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-22 DOI: 10.1093/milmed/usaf360
Kyle Patrick Apilado, Kevin Chuang, Jacob H Cole, Christian L Coles, Andrew J Schoenfeld, Tracey Perez Koehlmoos
{"title":"Changes in Emergency General Surgery Volume Within Military Treatment Facilities (2016-2023).","authors":"Kyle Patrick Apilado, Kevin Chuang, Jacob H Cole, Christian L Coles, Andrew J Schoenfeld, Tracey Perez Koehlmoos","doi":"10.1093/milmed/usaf360","DOIUrl":"https://doi.org/10.1093/milmed/usaf360","url":null,"abstract":"<p><strong>Background: </strong>Emergency General Surgery (EGS) procedures are vital and high-risk interventions. Delivery of these procedures in military treatment facilities (MTFs) is important to beneficiaries of the U.S. Military Health System (MHS). Organizational changes, including consolidation of MTFs under the Defense Health Agency and personnel reductions, in conjunction with the COVID-19 pandemic, have led to concerns about potential declines in care quality. We assessed whether clinical outcomes remained consistent or were negatively influenced by the healthcare administrative changes and the COVID-19 pandemic.</p><p><strong>Materials and methods: </strong>Claims data from the MHS Data Repository and ICD-10 diagnosis codes were used to identify patients, 18-64, admitted to U.S.-based MTFs between fiscal years 2016 and 2023 with an EGS condition. The main predictor was hospital EGS volume categorized into volume-based quartiles. Outcomes were 30-day mortality, complications, and readmissions. Patients were stratified into 2 time periods (FY 2016-2019 and FY 2020-2023) based on index admission date. Multivariable logistic regression models were used to assess the relationship between MTF volume and clinical outcomes.</p><p><strong>Results: </strong>113,626 EGS encounters treated across 40 MTFs were identified. Adjusted analyses showed that compared to the highest volume MTFs of 2016-2019, MTFs in the lower middle quartiles (LMQ) and upper middle quartiles (UMQ) of 2016-2019 (OR: 0.67; OR: 0.67) and LMQ of 2020-2023 (OR: 0.70) had a significantly decreased likelihood of 30-day mortality. Compared to 2016-2019's highest volume MTFs, the lowest volume MTFs of 2016-2019 were significantly less likely to experience complications (OR: 0.67), while MTFs from the UMQ of 2016-2019 (OR: 1.10) and all quartiles of 2020-2023 (OR: 1.22; OR: 1.61; OR: 1.43; OR: 1.27) were significantly more likely to develop complications. Patients treated at MTFs in the LMQ and UMQ of 2016-2019 (OR: 0.78; OR: 0.70) and those in the lowest and middle quartiles of 2020-2023 (OR: 0.67; OR: 0.71; OR: 0.76) had a significantly lower likelihoods of readmission compared to the highest volume MTFs of 2016-2019.</p><p><strong>Conclusion: </strong>The likelihood of 30-day complications among all MTF quartiles in 2020-2023 was significantly higher compared to MTFs in 2016-2019. However, EGS patients treated in low-volume MTFs experienced similar, if not improved, clinical outcomes of mortality and readmissions compared to those treated in high-volume MTFs.</p>","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144690930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hepatic Abscess Caused by Aggregatibacter kilianii in an Immunocompetent Active Duty Male, Case Report. 免疫功能正常的现役男性由克氏聚集杆菌引起的肝脓肿一例报告。
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-21 DOI: 10.1093/milmed/usaf303
Jackson T Watkins, Jake A Cresta, Michael A Boatwright
{"title":"Hepatic Abscess Caused by Aggregatibacter kilianii in an Immunocompetent Active Duty Male, Case Report.","authors":"Jackson T Watkins, Jake A Cresta, Michael A Boatwright","doi":"10.1093/milmed/usaf303","DOIUrl":"https://doi.org/10.1093/milmed/usaf303","url":null,"abstract":"<p><p>Bacterial translocation from normal oral flora, such as Aggregatibacter spp., can rarely lead to endocarditis, bloodstream infections, and abscesses. We present a case of an immunocompetent active duty service member with a hepatic abscess from a presumed routine dental hygiene cleaning with Aggregatibacter kilianii bacteremia. Aggregatibacter kilianii is a relatively novel species, closely related to the well-reported Aggregatibacter aphrophilus but genetically distinct. This appears to be one of the first described cases of a hepatic abscess caused by this species.</p>","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144675276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cranial Nerve Six Palsy Occurring in PreEclampsia: A Case Report. 子痫前期脑神经六麻痹1例报告。
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-18 DOI: 10.1093/milmed/usaf337
Laura Chachula, Christopher Rogers, Randal Cieslak
{"title":"Cranial Nerve Six Palsy Occurring in PreEclampsia: A Case Report.","authors":"Laura Chachula, Christopher Rogers, Randal Cieslak","doi":"10.1093/milmed/usaf337","DOIUrl":"https://doi.org/10.1093/milmed/usaf337","url":null,"abstract":"<p><p>Isolated palsy of cranial nerve VI, also known as the abducens nerve, is a condition rarely seen in the obstetric population; however, there is a growing body of literature that suggests an association with pre-eclampsia and hypertensive disorders of pregnancy. We present the sixteenth case documenting this association involving a 30-year-old G1 admitted for induction of labor at 39 weeks gestational age (WGA) subsequently diagnosed with pre-eclampsia with severe features and, after an otherwise uncomplicated vaginal delivery, developed an isolated abducens nerve palsy. While similar cases reviewed in the current body of literature document self-resolution of the palsy, a thorough workup is warranted because of other potentially malignant causes for this presentation. Appropriate management and risk factor counseling are discussed following a review of cases.</p>","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Superior Survival Outcomes of Epithelial Ovarian Cancer Patients in the Universal Access Military Healthcare System Compared With the National Surveillance, Epidemiology, and End Results Program. 与国家监测、流行病学和最终结果项目相比,普遍可及的军事医疗保健系统中上皮性卵巢癌患者的生存结局更好。
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-18 DOI: 10.1093/milmed/usaf368
Kathleen M Darcy, Christopher M Tarney, Aimee B Park, Christina Rutherford, Chunqiao Tian, David M Anderson, Yovanni Casablanca, G Larry Maxwell, Jie Lin, Craig D Shriver, Kangmin Zhu
{"title":"Superior Survival Outcomes of Epithelial Ovarian Cancer Patients in the Universal Access Military Healthcare System Compared With the National Surveillance, Epidemiology, and End Results Program.","authors":"Kathleen M Darcy, Christopher M Tarney, Aimee B Park, Christina Rutherford, Chunqiao Tian, David M Anderson, Yovanni Casablanca, G Larry Maxwell, Jie Lin, Craig D Shriver, Kangmin Zhu","doi":"10.1093/milmed/usaf368","DOIUrl":"https://doi.org/10.1093/milmed/usaf368","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Introduction: &lt;/strong&gt;To compare 5-year overall survival outcomes in patients diagnosed with epithelial ovarian carcinoma in the United States Department of Defense (DoD) cancer registry, who received universal healthcare, with the Surveillance, Epidemiology, and End Results (SEER) program of the National Cancer Institute, the U.S. general population.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Materials and methods: &lt;/strong&gt;Eligible patients were diagnosed with invasive stage I-IV epithelial ovarian carcinoma between 1987 and 2013. Each patient from the Automated Center Tumor Registry (ACTUR) for the DoD managed by the Joint Pathology Center was matched in a 1:4 ratio with stratification for age group, race, year of diagnosis, histology, and to patients in the 18-region SEER program. Five-year overall survival was evaluated using the Kaplan-Meier method and compared using log-rank test. Adjusted hazard ratio (AHR) and 95% CI for all-cause death in ACTUR compared with SEER were estimated from multivariable Cox proportional regression modeling controlling for age, race, year of diagnosis, region of diagnosis, stage, histology, and grade.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;There were 1,504 and 6,016 patients from ACTUR and SEER, respectively. Epithelial ovarian cancer patients in ACTUR had better 5-year overall survival than those in SEER (53.2% vs. 47.7%, log-rank P = .0010). The AHR (95% CI) was 0.83 (0.76-0.91, P &lt; .0001) for ACTUR versus SEER patients after adjustment for age, race, year of diagnosis, region, histology, tumor stage, and grade. Subset analysis revealed that the reduced adjusted risk of death in ACTUR versus SEER patients with epithelial ovarian cancer remained significant in the subset diagnosed either at 35-49 years old (AHR = 0.66, 95% CI = 0.52-0.83; P = .0005) or 65+ years old (AHR = 0.82, 95% CI = 0.70-0.96; P = .016), or with stage III disease (AHR = 0.79, 95% CI = 0.69-0.91, P = .002), the clear cell carcinoma subtype (AHR = 0.63, 95% CI = 0.43-0.93; P = .02) or the adenocarcinoma subtype (AHR = 0.68, 95% CI = 0.56-0.81; P &lt; .0001). There was also exploratory evidence for a trend for decreased adjusted risk of death in the subset of patients diagnosed between 50 and 64 years old (adjusted HR = 0.88, 95% CI = 0.77-1.01), with stage IV disease (adjusted HR = 0.87, 95% CI = 0.56-1.02), or with the serous adenocarcinoma subtype (adjusted HR = 0.92, 95% CI = 0.82-1.03). Adjusted risk of death was similar for ACTUR versus SEER patients diagnosed &lt;35 years old (adjusted HR = 1.30, 95% CI = 0.68-2.47), with stage I disease (adjusted HR = 0.76, 95% CI = 0.51-1.14), with stage II disease (adjusted HR = 0.74, 95% CI = 0.47-1.16) or with the mucinous carcinoma subtype (adjusted HR = 0.93, 95% CI = 0.60-1.43).&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions: &lt;/strong&gt;Patients with epithelial ovarian carcinoma in the DoD Cancer Registry had better 5-year overall survival compared with a matched sample of patients from the national SEER program. The reduced lethality associated","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Impact of COVID-19 Infection on Semen Analysis Values in Active Duty Service Members. COVID-19感染对现役军人精液分析值的影响
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-17 DOI: 10.1093/milmed/usaf223
Karolina Wadolowska, Jessica Lentscher, D Alan Nelson, Thomas Beltran, Bruce Pier
{"title":"The Impact of COVID-19 Infection on Semen Analysis Values in Active Duty Service Members.","authors":"Karolina Wadolowska, Jessica Lentscher, D Alan Nelson, Thomas Beltran, Bruce Pier","doi":"10.1093/milmed/usaf223","DOIUrl":"https://doi.org/10.1093/milmed/usaf223","url":null,"abstract":"<p><strong>Introduction: </strong>The COVID-19 outbreak increased concern regarding the effects of infection and the vaccines on the risk of reproductive function. The objective of this study was to determine the effects of COVID-19 virus infection on US active duty service members' semen analysis results.</p><p><strong>Materials and methods: </strong>This retrospective cohort analysis was performed using the Medial Assessment and Readiness System at Womack Army Medical Center. It included males on active duty for any duration from January 2011 through September 2022. These males were eligible with at least 2 semen analyses documented in laboratory reports, with those with history of COVID-19 infection having analyses before and after infection. Changes in 4 laboratory semen indices were compared: semen volume (mL), sperm count per mL, sperm motility percentage, and percentage of sperm with normal morphology.</p><p><strong>Results: </strong>The study population comprised 1,188 active duty males with at least 2 semen analyses. Cohorts were established based on COVID-19 diagnosis (n = 60) and no history of COVID-19 diagnosis (n = 1,128). There were no differences in before-and-after semen analysis values for semen volume (mL) (P = .875) and sperm count in millions per mL (P = .973). There was a 7.02% regression-adjusted reduction in the motile sperm percentage (95% confidence interval [95% CI] -12.38 to -1.652, P = .010) and a 6.03% reduction in the percentage of sperm with normal morphology associated with COVID-19 infection (95% CI -10.03 to -2.04, P = .003).</p><p><strong>Conclusions: </strong>Our study detected a decrease in sperm motility and morphology in a cohort of active duty service members with a history of COVID-19 infection.</p>","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144649812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Early Pott's Puffy Tumor Syndrome Due to Barotrauma Treated Successfully With Oral Antibiotic and Corticosteroid Therapy. 口服抗生素及皮质类固醇治疗气压创伤所致早期波特氏肿大综合征。
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-16 DOI: 10.1093/milmed/usaf365
L T Martin A C Manoukian, L T Sally L Westcott, L C D R Scott B Hughey
{"title":"Early Pott's Puffy Tumor Syndrome Due to Barotrauma Treated Successfully With Oral Antibiotic and Corticosteroid Therapy.","authors":"L T Martin A C Manoukian, L T Sally L Westcott, L C D R Scott B Hughey","doi":"10.1093/milmed/usaf365","DOIUrl":"https://doi.org/10.1093/milmed/usaf365","url":null,"abstract":"<p><p>Acute rhinosinusitis is a common diagnosis within the military, resulting in high healthcare utilization. Barotrauma caused by \"sinus squeeze\" can increase morbidity associated with rhinosinusitis and can lead to complications such as Pott's Puffy Tumor (PPT). Pott's Puffy Tumor is a rare but serious complication of bacterial rhinosinusitis that is typically treated with intravenous antibiotics and surgical drainage. Herein, we present a case of early PPT that occurred following barotrauma from a plane flight. The patient had sequential healthcare visits during which time he developed the classic \"doughy\" forehead swelling associated with PPT. Computed tomography demonstrated pansinusitis with ostiomeatal unit obstruction and trans-osseus extension of the underlying sinusitis consistent with early PPT. Importantly, no abscess or bony dehiscence had developed. Given his stability and lack of comorbidities, he was discharged on oral antibiotics with 24-hour specialist outpatient follow-up. Oral corticosteroid therapy was subsequently initiated to promote sinus drainage. At ensuing follow-up, the patient reported development of nasal drainage and resolution of his pain and swelling. This case report demonstrates the feasibility of outpatient treatment with oral medication in the setting of early PPT in select patients. This is of particular utility in the military operational setting, where occupational exposure to barotrauma is frequent, and austere scenarios often limit access to parenteral antibiotics or specialty consultation.</p>","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144649810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Differences in Reaction Time Variability on the Senaptec Sensory Station by Concussion Status in Special Operations Forces Service Members. 特种作战部队成员脑震荡状态对Senaptec感官站反应时间变异性的影响。
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-16 DOI: 10.1093/milmed/usaf366
Wesley R Cole, Madison C Chandler, Johna K Register-Mihalik, Stephanie R Sirhal, Brock A Benedict, Jason P Mihalik
{"title":"Differences in Reaction Time Variability on the Senaptec Sensory Station by Concussion Status in Special Operations Forces Service Members.","authors":"Wesley R Cole, Madison C Chandler, Johna K Register-Mihalik, Stephanie R Sirhal, Brock A Benedict, Jason P Mihalik","doi":"10.1093/milmed/usaf366","DOIUrl":"https://doi.org/10.1093/milmed/usaf366","url":null,"abstract":"<p><strong>Introduction: </strong>Computerized cognitive tests are widely used in post-concussion assessments. The psychometric properties and clinical utility of employing central tendency measures have been questioned. This is true for many outcomes, including reaction time (RT). Cognitive dispersion metrics, such as reaction time variability (RTV) measured by intraindividual variability (IIV), may offer increased sensitivity to concussions. Evaluating IIV across different computerized cognitive platforms is key to determining the utility of central dispersion metrics. This study aimed to extract IIV from the Senaptec Sensory Station (Senaptec, Inc.) Eye-Hand Coordination (EHC) subtest and compare it in service members (SMs) without a past concussion (concussion naïve, CN) versus those with a recent concussion (<1 month; RC) and non-recent concussion (≥1 month; NRC).</p><p><strong>Materials and methods: </strong>Three hundred ninety-one Special Operations Forces SMs (98.2% male, mean age 33 years) were assessed using the Senaptec Sensory Station EHC subtest, a reaction time test where stimuli are presented centrally and peripherally, and included in analyses. Groups included CN (n = 174), RC (n = 22), and NRC (n = 195). Mean RT, RT SD, and IIV, calculated as the SD of each individual's trial-by-trial RT, were extracted from EHC for all trials (i.e., total), only central stimuli, and only peripheral stimuli. A \"disruption\" metric (SDDiff) was calculated as the difference in IIV between stimuli presented centrally and peripherally. Analysis of variance examined group differences in RT and IIV, with Tukey post hoc tests employed to explore any significant omnibus findings.</p><p><strong>Results: </strong>Significant differences (P < .05) were found between RC and both NRC and CN groups for total RT, peripheral RT, total SD, and peripheral SD. Additionally, significant differences were found between RC and both NRC and CN groups for total IIV, peripheral IIV, and SDDiff. However, effect sizes for all significant findings were small and below the level for minimal practical effect (ηp2 < 0.04). No differences were found between the NRC and CN groups on any metric, nor between any groups on metrics from centrally presented stimuli.</p><p><strong>Conclusions: </strong>Reaction time variability as measured by IIV from the Senaptec Sensory Station's EHC subtest is somewhat sensitive to recent concussions, particularly for peripherally presented stimuli. This is consistent with past research evaluating IIV from a different computerized cognitive platform. Methodological differences between this and past investigations, such as time since injury, study population, and test nature, may have influenced clinical effect sizes. Cognitive dispersion measures like RTV could enhance post-concussion assessments and should be further investigated for their clinical utility in concussion assessment and recovery tracking.</p>","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144649896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Letter From the Chief Executive Officer Dr John Cho. 行政总裁赵永平博士致信。
IF 1.2 4区 医学
Military Medicine Pub Date : 2025-07-16 DOI: 10.1093/milmed/usaf369
{"title":"Letter From the Chief Executive Officer Dr John Cho.","authors":"","doi":"10.1093/milmed/usaf369","DOIUrl":"https://doi.org/10.1093/milmed/usaf369","url":null,"abstract":"","PeriodicalId":18638,"journal":{"name":"Military Medicine","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144649811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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