Objective Assessment of Cognitive Workload in Surgery: A Systematic Review.

OBJECTIVE: To systematically review technologies that objectively measure CWL in surgery, assessing their psychometric and methodological characteristics. SUMMARY BACKGROUND DATA: Surgical tasks involving concurrent clinical decision-making and the safe application of technical and non-technical skills require a substantial cognitive demand and resource utilization. Cognitive overload leads to impaired clinical decision-making and performance decline. Assessing cognitive workload (CWL) could enable interventions to alleviate burden and improve patient safety. METHODS: Ovid MEDLINE, OVID Embase, the Cochrane Library and IEEE Xplore databases were searched from inception to August 2023. Full-text, peer-reviewed original studies in a population of surgeons, anesthesiologists or interventional radiologists were considered, with no publication date constraints. Study population, task paradigm, stressor, Cognitive Load Theory (CLT) domain, objective and subjective parameters, statistical analysis and results were extracted. Studies were assessed for a) definition of CWL, b) details of the clinical task paradigm, and c) objective CWL assessment tool. Assessment tools were evaluated using psychometric and methodological characteristics. RESULTS: 10790 studies were identified; 9004 were screened; 269 full studies were assessed for eligibility, of which 67 met inclusion criteria. The most widely used assessment modalities were autonomic (32 eye studies and 24 cardiac). Intrinsic workload (e.g. task complexity) and germane workload (effect of training or expertize) were the most prevalent designs investigated. CWL was not defined in 30 of 67 studies (44.8%). Sensitivity was greatest for neurophysiological instruments (100% EEG, 80% fNIRS); and across modalities accuracy increased with multi-sensor recordings. Specificity was limited to cardiac and ocular metrics, and was found to be sub-optimal (50% and 66.67%). Cardiac sensors were the least intrusive, with 54.2% of studies conducted in naturalistic clinical environments (higher ecological validity). CONCLUSION: Physiological metrics provide an accessible, objective assessment of CWL, but dependence on autonomic function negates selectivity and diagnosticity. Neurophysiological measures demonstrate favorable sensitivity, directly measuring brain activation as a correlate of cognitive state. Lacking an objective gold standard at present, we recommend the concurrent use of multimodal objective sensors and subjective tools for cross-validation. A theoretical and technical framework for objective assessment of CWL is required to overcome the heterogeneity of methodological reporting, data processing, and analysis.

Development and evaluation of an online surgical elective for medical students.

BACKGROUND: Decreased experiential learning opportunities exacerbated by the COVID-19 pandemic have increased development of online surgical educational courses. To what extent may such courses provide exposure to broad and accessible surgical education? METHODS: Surge is a 6-week online surgical elective hosted within a virtual learning environment, covering all surgical specialties. Course content is mapped to the Royal College of Surgeons' Undergraduate Curriculum in Surgery. Each week consultant surgeons discuss their specialty in short videos on anatomy, pathology and lifestyle of a surgeon. Students also engage with learning activities; further reading lists; formative quizzes and live sessions including suturing practice. Participants were medical students undertaking third-year electives at the University of Sheffield. Pre- and post-course questionnaires investigated student interest in surgery, understanding of steps required to pursue a surgical career and confidence in surgical environments. Qualitative data was collected via free-text responses and analysed with content analysis. Quantitative data was collected using 5-point Likert scales (1 = Strongly Disagree; 5 = Strongly Agree) and analysed using the Wilcoxon signed-rank test. RESULTS: Twenty-two students participated in Surge over five 6-week cohorts. Examination of free-text responses revealed students gained increased understanding of available surgical career options. Students felt better informed regarding different surgical specialties (median score 2.5 vs. 4, p = 0.000) and steps required to develop a surgical portfolio (median score 2 vs. 5, p = 0.000). Additionally, confidence in understanding of relevant intraoperative steps improved (median score 3 vs. 4, p = 0.000). CONCLUSION: These data demonstrate Surge increased student confidence and understanding of surgical careers despite reduced in-person opportunities to engage with surgical education. Surge will continue to be developed and evaluated on a larger scale.

Curricular changes and interim posts during Covid-19: graduates' perspectives.

BACKGROUND: During the COVID-19 pandemic UK medical schools facilitated the early graduation of their final-year medical students to 'Foundation interim Year 1 (FiY1) doctors' through amendments made to curricula and final assessment. Such changes gave opportunity for evaluation. This study therefore aimed to explore 1) graduate perspective on the implementation of FiY1 and 2) how changes to course structures have affected self-reported preparedness for work. METHODS: Questionnaire surveys using Likert scale and free-text responses (n = 45), and semi-structured interviews (n = 7) were conducted with FiY1s from two UK medical schools contrasting in the amendments made to course structures. Data were analysed using quantitative methods and thematic analysis; 44% (n = 20) of respondents believed that governing health bodies had not communicated sufficiently prior to starting work. RESULTS: Graduates who had sat modified practical and written examinations reported 'legitimacy' and feeling more prepared compared to having not sat examinations (practical 100%, n = 17; written 88.3%, n = 15). Graduates from both schools agreed that carrying out assistantships as originally scheduled would have made them feel more prepared (91.1%, n = 41). CONCLUSIONS: The implementation of FiY1 was largely well received by graduates yet assistantship programmes may fulfil a similar role in normal times. Medical schools and governing bodies must ensure effective communication channels exist with students in order to better prepare them for their first posts, especially in times of crisis. Additionally, final examinations contribute to feelings of preparedness for work and instil a sense of legitimacy, a finding which is relevant to working within the current programmatic assessment structure.

Adapting Motor Imagery Training Protocols to Surgical Education: A Systematic Review and Meta-Analysis.

Objective. Motor imagery (MI) is widely used to improve technical skills in sports and has been proven to be effective in neurorehabilitation and surgical education. This review aims to identify the key characteristics of MI protocols for implementation into surgical curricula. Design. This study is a systematic review and meta-analysis. PubMed, MEDLINE, Embase and PsycINFO databases were systematically searched. The primary outcome was the impact of MI training on measured outcomes, and secondary outcomes were study population, MI intervention characteristics, study primary outcome measure and subject rating of MI ability (systematic review registration: PROSPERO CRD42019121895). Results. 456 records were screened, 60 full texts randomising 2251 participants were reviewed and 39 studies were included in meta-analysis. MI was associated with improved outcome in 35/60 studies, and pooled analysis also showed improved outcome on all studies with a standardised mean difference of .39 (95% CI: .12, .67, P = .005). In studies where MI groups showed improved outcomes, the median duration of training was 24 days (mode 42 days), and the median duration of each individual MI session was 30 minutes (range <1 minute-120 minutes). Conclusions. MI training protocols for use in surgical education could have the following characteristics: MI training delivered in parallel to existing surgical training, in a flexible format; inclusion of a brief period of relaxation, followed by several sets of repetitions of MI and a refocusing period. This is a step towards the development of a surgical MI training programme, as a low-cost, low-risk tool to enhance practical skills.

Persistent lactation in bilateral breast implant augmentation: A case report and review of the literature.

Background: Persistent lactation, or galactorrhoea, is a common problem which is infrequently seen in the setting of aesthetic surgery. Increasing frequency of aesthetic breast surgery such as breast augmentation suggests a need for improved understanding of the effect of galactorrhoea on surgical outcomes. Case Report: A 34-year-old patient underwent day-case bilateral breast reduction/mastopexy combined with sub-muscular implant augmentation, abdominoplasty and bilateral liposuction to the flanks. She reported to have stopped breastfeeding more than 6 months prior. Intraoperatively, the breast tissue was noted to be lactating. The procedure was completed as planned and a routine postoperative plan was followed including oral antibiotics, analgesia and compression garments. The patient was discharged, however reattended on postoperative day 10 with breast pain and fevers. She was treated for right breast surgical site infection and required washout and implant removal. She was referred to Endocrinology for treatment of galactorrhoea with Bromocriptine and Cabergoline. She subsequently underwent revision implant augmentation with good outcomes. Discussion: This case highlights the increased likelihood of post-operative infection in galactorrhoea associated with breast implant augmentation. It is important to exclude lactation preoperatively and avoid a prosthesis in this situation, to minimise this risk and optimise surgical outcomes. Conclusion: Aesthetic breast surgeons must be aware of the incidence of galactorrhoea, and its possible effects on risks of postoperative complications and poor aesthetic outcomes. The authors suggest deferring implant augmentation until complete resolution of lactation where possible.

Optical neuroimaging and neurostimulation in surgical training and assessment: A state-of-the-art review.

Introduction: Functional near-infrared spectroscopy (fNIRS) is a non-invasive optical neuroimaging technique used to assess surgeons' brain function. The aim of this narrative review is to outline the effect of expertise, stress, surgical technology, and neurostimulation on surgeons' neural activation patterns, and highlight key progress areas required in surgical neuroergonomics to modulate training and performance. Methods: A literature search of PubMed and Embase was conducted to identify neuroimaging studies using fNIRS and neurostimulation in surgeons performing simulated tasks. Results: Novice surgeons exhibit greater haemodynamic responses across the pre-frontal cortex than experts during simple surgical tasks, whilst expert surgical performance is characterized by relative prefrontal attenuation and upregulation of activation foci across other regions such as the supplementary motor area. The association between PFC activation and mental workload follows an inverted-U shaped curve, activation increasing then attenuating past a critical inflection point at which demands outstrip cognitive capacity Neuroimages are sensitive to the impact of laparoscopic and robotic tools on cognitive workload, helping inform the development of training programs which target neural learning curves. FNIRS differs in comparison to current tools to assess proficiency by depicting a cognitive state during surgery, enabling the development of cognitive benchmarks of expertise. Finally, neurostimulation using transcranial direct-current-stimulation may accelerate skill acquisition and enhance technical performance. Conclusion: FNIRS can inform the development of surgical training programs which modulate stress responses, cognitive learning curves, and motor skill performance. Improved data processing with machine learning offers the possibility of live feedback regarding surgeons' cognitive states during operative procedures.

Comparison of physician weight loss goals for obese male and female patients.

OBJECTIVE: The aim of this study was to compare physicians' weight loss goals for obese male and female patients. METHOD: This study was conducted in 2008-2009 in Florida, USA. Physicians (N=108; 79.6% primary care specialty) reviewed two hypothetical clinical scenarios that were identical with respect to health status and obesity (BMI=33 kg/m(2)) but differed in the gender of the patient. Physicians then completed a survey about the need for weight loss, intentions to provide weight loss counseling, and weight loss goals (i.e., ideal, successful, and acceptable goal weights) for each hypothetical patient. RESULTS: Physicians strongly agreed that both patients should lose weight and physician counseling and/or treatment referrals would be appropriate; however, physician weight loss goals for male and female patients differed. BMI values calculated from the suggested ideal, successful, and acceptable weight goals were significantly lower for female patients than male patients, 22.0 vs. 25. 2 kg/m(2); 25.4 vs. 27. 8 kg/m(2); and 27.0 vs. 29. 2 kg/m(2), respectively, P values <.001. CONCLUSIONS: Physicians endorsed significantly more stringent weight loss goals for obese female patients than obese male patients. Regardless of patient gender, physician goals exceeded the 5-10% losses currently recommended. Additional research is needed to better understand this gender discrepancy in physician expectations for obese patients.

A systematic review of transurethral resection of ejaculatory ducts for the management of ejaculatory duct obstruction.

OBJECTIVE: Ejaculatory duct obstruction (EDO) is an uncommon but potentially treatable cause of male factor infertility. However, there are limited data on transurethral resection of the ejaculatory ducts (TURED) as a treatment option. A systematic review was therefore conducted to assess its efficacy and identify patient subgroups that benefit from the procedure. MATERIAL AND METHODS: A database search of PubMed, Embase, and Scopus (up to January 2019) and the World Health Organization trial registry was performed to identify all studies assessing infertile men with EDO undergoing TURED. The primary outcome measures included semen parameters and natural pregnancies. The secondary outcomes included complications, symptomatic improvement, and a change from in vitro fertilization to intrauterine insemination. RESULTS: Of 3,277 articles screened, 29 studies with 634 patients were included in the study. Although outcomes varied considerably among studies, a general increase in all semen parameters postoperatively was observed. Semen volume (n=23 studies) improved in a median of 83.0% of patients (interquartile range [IQR]: 37.5). Sperm motility and concentration (n=10 and n=21 studies) improved in a median of 63.0% (IQR: 15.0) and 62.5% (IQR: 16.5) of patients, respectively. The natural pregnancy rate across the studies was a median of 25.0% (IQR: 15.7). Improvements in both the outcomes were greater in patients with congenital etiologies and partial EDO. Differences in surgical technique did not appear to affect outcomes. CONCLUSION: TURED is associated with improvements in semen parameters and offers a chance of restoring fertility in previously subfertile men. Although results are promising, the current evidence remains limited owing to predominantly retrospective studies with small sample sizes.

Patient and physician characteristics associated with the provision of weight loss counseling in primary care.

BACKGROUND: A variety of physician and patient characteristics may influence whether weight loss counseling occurs in primary care encounters. OBJECTIVES: This study utilized a cross-sectional survey of primary care patients, which examined patient characteristics, physician characteristics, and characteristics of the physicianâ??patient relationship associated with weight loss counseling and recommendations provided by physicians. PARTICIPANTS: (N = 143, mean age = 46.8 years, mean BMI = 36.9 kg/m(2), 65% Caucasian) were overweight and obese primary care patients participating in a managed care weight loss program. MEASURES: PARTICIPANTS completed self-report surveys in the clinic prior to the initial weight loss session. Surveys included items assessing demographic/background characteristics, weight, height, and a health care questionnaire evaluating whether their physician had recommended weight loss, the frequency of their physiciansâ?? weight loss counseling, and whether their physician had referred them for obesity treatment. RESULTS: Patient BMI and physician sex were most consistently associated with physiciansâ?? weight loss counseling practices. Patients seen by female physicians were more likely to be told that they should lose weight, received more frequent obesity counseling, and were more likely to have been referred for obesity treatment by their physician. Length and frequency of physicianâ??patient contacts were unrelated to the likelihood of counseling. CONCLUSIONS: These findings add to previous evidence suggesting possible differences in the weight loss counseling practices of male and female physicians, although further research is needed to understand this potential difference between physicians.

What words should we use when discussing excess weight?

BACKGROUND: There is limited research on how patients prefer physicians to communicate about the topic of obesity, and there is even less understanding of which terms physicians most commonly use. METHODS: In this cross-sectional, nonrandom sampling study, patients who were seeking treatment for weight loss rated the desirability of 12 terms to describe excess weight, and physicians rated the likelihood with which they would use those terms during clinical encounters. Participants rated terms on a 5-point scale, with -2 representing "very undesirable" or "definitely would not use" and +2 representing "very desirable" or "definitely would use." RESULTS: Patients (n = 143; mean age, 46.8 years; mean body mass index, 36.9 kg/m(2)) rated "weight" (mean +/- SD) as the most desirable term (1.13 +/- 1.10), although it did not significantly differ from 5 other terms provided. They rated "fatness" (-1.30 +/- 1.22) as the most undesirable term, although this rating did not differ significantly from 4 other terms. Physicians affiliated with a community-based medical school (n = 108; mean age, 48.8 years; 79.6% primary care specialty) were most likely to use "weight" (1.42 +/- 0.89), which was significantly different from ratings for all other terms. They were least likely to use "fatness" (-1.74 +/- 0.59), although this rating did not differ significantly from 3 other terms. CONCLUSION: Physicians generally reported that they use terminology that patients had rated more favorably, and they tend to avoid terms that patients may find undesirable. Understanding the preferences and terminology used by patients and physicians is an important initial step to ensure that communications related to obesity and weight loss are efficient and effective.

Weight loss goals of patients in a health maintenance organization.

Individuals seeking weight loss treatment endorse unrealistic expectations regarding their goals for weight loss, although these conclusions are primarily based on research conducted in obesity specialty clinics and/or controlled clinical trials. This study examined the weight loss goals and predictors of these goals among patients participating in obesity treatment in an applied, clinical setting (i.e., managed care organization). Managed care patients enrolled in a behavioral weight loss program (N=143; mean age=46.8 years; mean BMI=36.9 kg/m(2); 89.5% female; 64.5% Caucasian) completed a self-report survey during an initial weight loss session. The survey included items assessing patients' weight loss expectations, including goals for dream, happy, acceptable, and disappointed weights. Participants completed questions regarding contacts with their primary care physician and physician provision of weight loss counseling and/or referrals. They also provided values for current height and weight. BMI's and weight loss associated with dream, happy, acceptable, and disappointed weight goals were 24.8 kg/m(2) (30.9% loss), 27.1 kg/m(2) (25.2% loss), 29.3 kg/m(2) (19.7% loss), and 33.0 kg/m(2) (10.4% loss), respectively. There were significant gender differences in weight loss goals, with women endorsing more unrealistic goals than men for dream and happy weights, ps<0.001. Significant predictors of all four weight loss goals included baseline BMI, gender, ethnicity, and frequency of visits with one's primary care physician, ps<0.01. Consistent with previous research, patients participating in a weight loss program implemented in a managed care setting endorsed unrealistic expectations for weight loss. However, more frequent contact with one's primary care physician was associated with more realistic goals. Future, longitudinal research is needed to document the discrepancy between these goals and actual weight loss achieved in such settings as well as to determine whether excessive goals are associated with diminished treatment outcomes.