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Featured researches published by Daniel A. Hashimoto.


Academic Medicine | 2016

The Missing Link: Connection Is the Key to Resilience in Medical Education.

McKenna Km; Daniel A. Hashimoto; Maguire Ms; Bynum We th

Awareness of the risks of burnout, depression, learner mistreatment, and suboptimal learning environments is increasing in academic medicine. A growing wellness and resilience movement has emerged in response to these disturbing trends; however, efforts to address threats to physician resilience have often emphasized strategies to improve life outside of work, with less attention paid to the role of belonging and connection at work. In this Commentary the authors propose that connection to colleagues, patients, and profession is fundamental to medical learners’ resilience, highlighting “social resilience” as a key factor in overall well-being. They outline three specific forces that drive disconnection in medical education: the impact of shift work, the impact of the electronic medical record, and the impact of “work–life balance.” Finally, the authors propose ways to overcome these forces in order to build meaningful connection and enhanced resilience in a new era of medicine.


Academic Medicine | 2016

See More, Do More, Teach More: Surgical Resident Autonomy and the Transition to Independent Practice.

Daniel A. Hashimoto; William E. Bynum; Keith D. Lillemoe; Ajit K. Sachdeva

The graduate medical education system is tasked with training competent and autonomous health care providers while also improving patient safety, delivering more efficient care, and cutting costs. Concerns about resident autonomy and preparation for independent and safe practice appear to be growing, and the field of surgery faces unique challenges in preparing graduates for independent practice. Multiple factors are contributing to an erosion of resident autonomy and decreased operative experience, including differing views of autonomy, financial forces, duty hours regulations, and diverse community health care needs. Identifying these barriers and developing solutions to overcome them are vital first steps in reversing the trend of diminishing autonomy in surgical residency training. This Commentary highlights the problem of decreasing autonomy, outlines specific threats to resident autonomy, and discusses potential solutions to mitigate their impact on the successful transition to independent practice.


Journal of Surgical Education | 2013

The virtual-patient pilot: testing a new tool for undergraduate surgical education and assessment.

Rachel L. Yang; Daniel A. Hashimoto; Jarrod D. Predina; Nina M. Bowens; Elizabeth M. Sonnenberg; Emily C. Cleveland; Charlotte C. Lawson; Jon B. Morris; Rachel R. Kelz

BACKGROUND The virtual patient (VP) is a web-based tool that allows students to test their clinical decision-making skills using simulated patients. METHODS Three VP cases were developed using commercially available software to simulate common surgical scenarios. Surgical clerks volunteered to complete VP cases. Upon case completion, an individual performance score (IPS, 0-100) was generated and a 16-item survey was administered. Surgery shelf exam scores of clerks who completed VP cases were compared with a cohort of students who did not have exposure to VP cases. Descriptive statistics were performed to characterize survey results and mean IPS. RESULTS Surgical clerks felt that the VP platform was simple to use, and both the content and images were well presented. They also felt that VPs enhanced learning and were helpful in understanding surgical concepts. Mean IPS at conclusion of the surgery clerkship was 69.2 (SD 26.5). Mean performance on the surgery shelf exam for the student cohort who had exposure to VPs was 86.5 (SD 7.4), whereas mean performance for the unexposed student cohort was 83.5 (SD 9). DISCUSSION The VP platform represents a new educational tool that allows surgical clerks to direct case progression and receive feedback regarding clinical-management decisions. Its use as an assessment tool will require further validation.


Simulation in healthcare : journal of the Society for Simulation in Healthcare | 2012

Successful implementation of the american college of surgeons/association of program directors in surgery surgical skills curriculum via a 4-week consecutive simulation rotation.

Mayank K. Mittal; Kristoffel R. Dumon; Paula K. Edelson; Natalia Martinez Acero; Daniel A. Hashimoto; Enrico Danzer; Ben Selvan; Andrew S. Resnick; Jon B. Morris; Noel N. Williams

Introduction Increased patient awareness, duty hour restrictions, escalating costs, and time constraints in the operating room have revolutionized surgery education. Although simulation and skills laboratories are emerging as promising alternatives for skills training, their integration into graduate surgical education is inconsistent, erratic, and often on a voluntary basis. We hypothesize that, by implementing the American College of Surgeons/Association of Program Directors in Surgery Surgical Skills Curriculum in a structured, inanimate setting, we can address some of these concerns. Methods Sixty junior surgery residents were assigned to the Penn Surgical Simulation and Skills Rotation. The National Surgical Skills Curriculum was implemented using multiple educational tools under faculty supervision. Pretraining and posttraining assessments of technical skills were conducted using validated instruments. Trainee and faculty feedbacks were collected using a structured feedback form. Results Significant global performance improvement was demonstrated using Objective Structured Assessment of Technical Skills score for basic surgical skills (knot tying, wound closure, enterotomy closure, and vascular anastomosis) and Fundamentals of Laparoscopic Surgery skills, P < 0.001. Six trainees were retested on an average of 13.5 months later (range, 8–16 months) and retained more than 75% of their basic surgical skills. Discussion The American College of Surgeons/Association of Program Directors in Surgery National Surgical Skills Curriculum can be implemented in its totality as a 4-week consecutive surgical simulation rotation in an inanimate setting, leading to global enhancement of junior surgical residents’ technical skills and contributing to attainment of Accreditation Council for Graduate Medical Education core competency.


Journal of The American College of Surgeons | 2012

Intraoperative Resident Education for Robotic Laparoscopic Gastric Banding Surgery: A Pilot Study on the Safety of Stepwise Education

Daniel A. Hashimoto; Ernest D. Gomez; Enrico Danzer; Paula K. Edelson; Jon B. Morris; Noel N. Williams; Kristoffel R. Dumon

BACKGROUND Incorporation of robotic surgery into resident education poses questions regarding intraoperative teaching and patient care. This study aimed to evaluate the impact of gradually increasing resident console responsibility on resident competency and patient safety, in the presence of a proctor and bedside surgeon, for robotic laparoscopic-assisted gastric banding (R-LAGB) compared with the classical training model (CTM) of residents as first assistant. STUDY DESIGN Eight clinical year 4 (CY4) residents completed 60 R-LAGB using a one-to-one proctored training model (PTM). R-LAGB was distilled into 7 key steps: gastroesophageal-junction dissection, gastrohepatic ligament dissection, retrogastric space creation, band placement, band closure, gastrogastric suturing, and port placement. Residents performed more complex steps after each case to gain competency in all aspects of the operation. Patient demographics, comorbidities, operative complications, operating times, and clinical outcomes were compared with a control group of 287 R-LAGB cases completed using the CTM (n = 15 CY4 residents). RESULTS All residents using the PTM were able to successfully complete an R-LAGB as primary surgeon after a median of 8 operations (range 5 to 11); no residents in the CTM completed an R-LAGB as primary surgeon. Mean operative time was statistically greater in the PTM group (99.3 ± 22.1 minutes) vs CTM (91.5 ± 21.1 minutes) (p = 0.001). There were no intraoperative complications in either group; incidence of postoperative complications was similar between groups. CONCLUSIONS All residents in the proctored setting claimed competence and have persistent console experience without significantly increasing procedure complications. PTM, otherwise known as stepwise education, is a safe, standardized method to train surgical residents in R-LAGB.


Journal of Surgical Education | 2015

A Randomized Controlled Trial to Assess the Effects of Competition on the Development of Laparoscopic Surgical Skills.

Daniel A. Hashimoto; Ernest D. Gomez; Laura Beyer-Berjot; Ankur Khajuria; Noel N. Williams; Ara Darzi; Rajesh Aggarwal

BACKGROUND Serious games have demonstrated efficacy in improving participation in surgical training activities, but studies have not yet demonstrated the effect of serious gaming on performance. This study investigated whether competitive training (CT) affects laparoscopic surgical performance. METHODS A total of 20 novices were recruited, and 18 (2 dropouts) were randomized into control or CT groups to perform 10 virtual reality laparoscopic cholecystectomies (LCs). Competitiveness of each participant was assessed. The CT group members were informed they were competing to outperform one another for a prize; performance ranking was shown before each session. The control group did not compete. Performance was assessed on time, movements, and instrument path length. Quality of performance was assessed with a global rating scale score. RESULTS There were no significant intergroup differences in baseline skill or measured competitiveness. Time and global rating scale score, at final LC, were not significantly different between groups; however, the CT group was significantly more dexterous than control and had significantly lower variance in number of movements and instrument path length at the final LC (p = 0.019). Contentiousness was inversely related to time in the CT group. CONCLUSION This was the first randomized controlled trial to investigate if CT can enhance performance in laparoscopic surgery. CT may lead to improved dexterity in laparoscopic surgery but yields otherwise similar performance to that of standard training in novices. Competition may have different effects on novices vs experienced surgeons, and subsequent research should investigate CT in experienced surgeons as well.


Journal of Surgical Education | 2016

Comparative Outcomes of Resident vs Attending Performed Surgery: A Systematic Review and Meta-Analysis.

Nigel D’Souza; Daniel A. Hashimoto; Kurinchi Selvan Gurusamy; Rajesh Aggarwal

OBJECTIVE To determine whether outcomes are different when surgery is performed by resident or attending surgeons, and which variables may affect outcomes. DESIGN MEDLINE, EMBASE, and the Cochrane Library were searched from inception to May 2014 alongside the bibliographies of all included or relevant studies. Any study comparing outcomes from surgery performed by resident vs attending surgeons was eligible for inclusion. The main outcome measures were surgical complications (classified by Clavien-Dindo grade), death, operative time, and length of stay. Data were extracted independently by 2 authors and analyzed using the random-effects model. RESULTS The final analysis included 182 eligible studies that enrolled 141 555 patients. Resident performed surgery took longer by 10.2 minutes (95% confidence interval (CI): 8.38-11.95), and had more Clavien-Dindo grade 1 (rate ratio = 1.14, 95% CI: 1.02-1.29) and grade 3a complications (rate ratio = 1.22, 95% CI: 1.04-1.44). Resident performed surgery resulted in fewer deaths (risk ratio = 0.83, 95% CI: 0.70-0.999) with a shorter length of stay of -0.49 days (95% CI: -0.77 to -0.21). Significant heterogeneity was present in 7 of 10 outcomes, which persisted during multiple subgroup analyses. CONCLUSIONS Resident performed surgery appears to be safe in carefully selected patients. The significant amount of heterogeneity present in the study outcomes prevents generalizability of these results to specific clinical contexts.


Surgery | 2018

Fifteen years of adrenalectomies: impact of specialty training and operative volume

Brenessa Lindeman; Daniel A. Hashimoto; Yanik J. Bababekov; Sahael M. Stapleton; David C. Chang; Richard A. Hodin; Roy Phitayakorn

Background. Previous associations between surgeon volume with adrenalectomy outcomes examined only a sample of procedures. We performed an analysis of all adrenalectomies performed in New York state to assess the effect of surgeon volume and specialty on clinical outcomes. Methods. Adrenalectomies performed in adults were identified from the New York Statewide Planning and Research Cooperative System from 2000–2014. Surgeon specialty, volume, and patient demographics were assessed. High volume was defined using a significance threshold at ≥4 adrenalectomies per year. Outcome variables included in‐hospital mortality, duration of stay, and in‐hospital complications. Results. A total of 6,054 adrenalectomies were included. Median patient age was 56 years; 41.9% were men and 68.3% were white. Urologists (n = 462) performed 46.8% of adrenalectomies, general surgeons (n = 599) performed 35.0%, and endocrine surgeons (n = 23) performed 18.1%. Significantly more endocrine surgeons were high‐volume compared with urologists and general surgeons (65.2% vs 10.2% and 6.7%, respectively, P < .001). High‐volume surgeons had significantly lower mortality compared with low‐volume surgeons (0.56% vs 1.25%, P = .004) and a lower rate of complications (10.2% vs 16.4%, P = < .001). Endocrine surgeons were more likely to perform laparoscopic procedures (34.8% vs 22.4% general surgeons and 27.7% US, P < .001) and had the lowest median hospital duration of stay (2 days vs 4 days general surgeons and 3 days urologists, P < .001). After risk adjustment, low surgeon volume was an independent predictor of inpatient complications (odds ratio = 0.96, P = .002). Conclusion. Patients with adrenal disease should be referred to surgeons based on adrenalectomy volume regardless of specialty, but most endocrine surgeons that perform adrenalectomy are high‐volume for the procedure.


Annals of Surgery | 2017

Is Annual Volume Enough? The Role of Experience and Specialization on Inpatient Mortality After Hepatectomy

Daniel A. Hashimoto; Yanik J. Bababekov; Winta T. Mehtsun; Sahael M. Stapleton; Andrew L. Warshaw; Keith D. Lillemoe; David C. Chang; Parsia A. Vagefi

Objective: To investigate the effect of subspecialty practice and experience on the relationship between annual volume and inpatient mortality after hepatic resection. Background: The impact of annual surgical volume on postoperative outcomes has been extensively examined. However, the impact of cumulative surgeon experience and specialty training on this relationship warrants investigation. Methods: The New York Statewide Planning and Research Cooperative System inpatient database was queried for patients’ ≥18 years who underwent wedge hepatectomy or lobectomy from 2000 to 2014. Primary exposures included annual surgeon volume, surgeon experience (early vs late career), and surgical specialization—categorized as general surgery (GS), surgical oncology (SO), and transplant (TS). Primary endpoint was inpatient mortality. Hierarchical logistic regression was performed accounting for correlation at the level of the surgeon and the hospital, and adjusting for patient demographics, comorbidities, presence of cirrhosis, and annual surgical hospital volume. Results: A total of 13,467 cases were analyzed. Overall inpatient mortality was 2.35%. On unadjusted analysis, late career surgeons had a mortality rate of 2.62% versus 1.97% for early career surgeons. GS had a mortality rate of 2.98% compared with 1.68% for SO and 2.67% for TS. Once risk-adjusted, annual volume was associated with reduced mortality only among early-career surgeons (odds ratio 0.82, P = 0.001) and general surgeons (odds ratio 0.65, P = 0.002). No volume effect was seen among late-career or specialty-trained surgeons. Conclusions: Annual volume alone likely contributes only a partial assessment of the volume-outcome relationship. In patients undergoing hepatic resection, increased annual volume did not confer a mortality benefit on subspecialty surgeons or late career surgeons.


Journal of Surgical Education | 2017

Association of Burnout With Emotional Intelligence and Personality in Surgical Residents: Can We Predict Who Is Most at Risk?

Brenessa Lindeman; Emil R. Petrusa; Sophia K. McKinley; Daniel A. Hashimoto; Denise W. Gee; Douglas S. Smink; John T. Mullen; Roy Phitayakorn

OBJECTIVES Burnout is common among surgical residents and may be related to personality characteristics, emotional intelligence (EI), or work experiences. DESIGN Longitudinal cohort study over 1 year. SETTING Tertiary academic medical centers in the Northeast. PARTICIPANTS All general surgery residents in 2 programs (n = 143) were invited to complete an electronic survey at 3 time points; 88, 64, and 69 residents completed the survey (overall response rate 52%). RESULTS Severe burnout was observed in 51% of residents (n = 41). Higher scores were associated with female sex (p = 0.02). Burnout scores were highest at the beginning and end of the academic year; EI and personality scores remained stable. On bivariate analysis, high EI score (p < 0.001), agreeableness and emotional stability personality features (p = 0.003), and positive job experiences (p < 0.01) were protective against burnout. Higher EI and positive work experiences were independent predictors of lower burnout (p < 0.01) after multivariable adjustment. CONCLUSIONS Surgical residents have high levels of burnout. Higher EI and positive work experiences are associated with lower burnout. Focused interventions to improve EI and optimize the work environment may prevent or lessen burnout.

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Noel N. Williams

University of Pennsylvania

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Ara Darzi

Imperial College London

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Ernest D. Gomez

University of Pennsylvania

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Andrew S. Resnick

University of Pennsylvania

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Daniela Rus

Massachusetts Institute of Technology

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