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Study design: Retrospective cohort study. Purpose: To explore the complications and risk factors for total resection (TR) of primary thoracic and lumbar spinal tumors over the past decade at our institution. Methods: Patients meeting inclusion criteria (primary spinal tumors, thoracic or lumbar location, TR at our center) were included. Demographic characteristics, surgical data, perioperative complications and management results were reviewed. Patients were stratified by tumor site, the number of excised segments, and recurrence status to elucidate distinctive characteristics. Results: The cohort comprised 103 patients, with a mean age of 35.8 years. On average, 1.83 vertebral segments were resected per patient. Perioperative complications were substantial, totaling 166 events, with 71 classified as major and 95 as minor, yielding an average of 1.61 complications per patient. No perioperative deaths occurred, but 79 patients (76.7%) experienced at least one complication. Multiple vertebral sections correlated with a higher complication rate (P = 0.031), and lumbar surgeries exhibited elevated risks of large vascular injury (P = 0.001), neurological deterioration, and cerebrospinal fluid leakage compared to thoracic cases. Conversely, thoracic spinal procedures showed a higher rate of pleural effusion (P = 0.004). Binary logistics stepwise regression identified multi-segmental resection as the independent risk factor for major perioperative complications. Conclusions: TR of primary spinal tumors is associated with a high perioperative complication rate, although most events have a favorable prognosis. Complication characteristics vary based on the surgical site, number of excised segments, and surgical history. A nuanced preoperative evaluating approach considering patient age, surgical segments, and extent of resection is crucial. [ABSTRACT FROM AUTHOR]

Background: Exposure to excessive noise volumes is an occupational health and safety risk. Australian guidelines recommend a time weighted exposure maximum of 85 dB (dB) or a maximum peak noise level of up to 140 dB, as chronic and repeated high dB exposure can result in significant hearing impairment. The aim of this study was to assess the volume of noise generated by common surgical instruments while utilizing the National Institute for Occupational Safety and Health (NIOSH) app. Methods: Sound levels were measured using the NIOSH app. The NIOSH app was used to take equivalent continuous A‐weighted sound levels (LAeq) and the C‐weighted peak sound pressure (LCpeak) measurements for specific instruments while in use in theatre. A minimum of three readings per instrument were taken at immediate and working distances. Results: LAeq measurements ranged from 62.9 to 89.3 dB. The Padgett Dermatome and Frazier Sucker exceeded recommended exposure limits with an averaged LAeq reading of 85.7 dB(A) and 85.1 dB(A) respectively. LCpeak readings ranged from 89.9 to 114.7 dB(C) with none of the instruments exceeding a peak sound level beyond the recommended level of 140 dB(C). Conclusion: The cumulative effect of loud surgical instruments across prolonged or combined operations may result in theatre staff being exposed to hazardous noise levels, impacting the health and wellbeing of staff, staff performance and patient care. Utilization of a phone app can improve the awareness of noise pollution in theatres, thereby empowering staff to be proactive about their health and improvement of their work environment. [ABSTRACT FROM AUTHOR]

Background: Postoperative pancreatic fistula (POPF) is a critical complication of laparoscopic gastrectomy (LG). However, there are no widely recognized anatomical landmarks to prevent POPF during LG. This study aimed to identify anatomical landmarks related to POPF occurrence during LG for gastric cancer and to develop an artificial intelligence (AI) navigation system for indicating these landmarks. Methods: Dimpling lines (DLs)—depressions formed between the pancreas and surrounding organs—were defined as anatomical landmarks related to POPF. The DLs for the mesogastrium, intestine, and transverse mesocolon were named DMP, DIP, and DTP, respectively. We included 50 LG cases to develop the AI system (45/50 were used for training and 5/50 for adjusting the hyperparameters of the employed system). Regarding the validation of the AI system, DLs were assessed by an external evaluation committee using a Likert scale, and the pancreas was assessed using the Dice coefficient, with 10 prospectively registered cases. Results: Six expert surgeons confirmed the efficacy of DLs as anatomical landmarks related to POPF in LG. An AI system was developed using a semantic segmentation model that indicated DLs in real-time when this system was synchronized during surgery. Additionally, the distribution of scores for DMP was significantly higher than that of the other DLs (p < 0.001), indicating the relatively high accuracy of this landmark. In addition, the Dice coefficient of the pancreas was 0.70. Conclusions: The DLs may be used as anatomical landmarks related to POPF occurrence. The developed AI navigation system can help visualize the DLs in real-time during LG. [ABSTRACT FROM AUTHOR]

Background: Reusable surgical drapes have a lower lifetime environmental impact than disposable drapes in most cases. There is limited evidence regarding whether drape choice impacts patient outcomes including post-operative wound complications. The aim of this study is to compare wound complication rates following routine neutering surgeries in cats and dogs when reusable drapes are used as compared with disposable drapes. Methods: The trial will be conducted as a pragmatic, multi-centre, parallel group randomised controlled trial in the UK. Dogs and cats undergoing routine neutering will be randomised to disposable or reusable drapes with all other aspects of care occurring as they usually would at the practice. The required sample size is 2,850, with 4750 animals to be recruited from up to ten practices to allow for a 40% loss to follow-up. Demographic data and details on peri-operative care will be collected at the time of surgery. Post-operative wound complications will be assessed and recorded as usual at each practice using clinical codes. The post-operative wound clinical codes and any antibiotic use within 30 days of surgery will be retrieved from the practice management software. The primary outcome that will be compared between the two groups is the rate of post-operative wound complications within 30 days of surgery which will be analysed by multivariable logistic regression with a binary outcome of wound complication (yes/no). Secondary outcomes are the prevalence of different types of complications and antibiotic use within 30 days of surgery which will be compared between the two groups by chi square analysis. Discussion: Our hypothesis is that there will be no difference in post-operative wound complication rates between disposable and reusable drapes. If the likely rate of post-surgical wound complications with reusable drapes is similar to that with disposable drapes, then veterinary clinical teams can choose the more sustainable option, confident that their patients will not be impacted by this choice. Trial registration: We have retrospectively registered the protocol on the Open Science Framework on 14 Nov 2023 (Trial registration entry: https://doi.org/10.17605/OSF.IO/72HMA). [ABSTRACT FROM AUTHOR]

Background: Currently, a standard, optimal surgical procedure is still lacking for gynecomastia. Despite the development of a variety of surgical interventions, these techniques were often limited to patients with Simon I and II. The present study aimed to introduce a novel technique for all types and grades of gynecomastia, and reported the preliminary results. Methods: Patients who received single axillary incision reverse sequence endoscopic nipple-sparing mastectomy (R-E-NSM) from March 2021 to March 2023 were enrolled at a single institution. The data from 3-month follow-up cut-off were collected prospectively and analyzed to determine the short-term esthetic and safety results of this technique, as well as the learning curve. Results: A total of 159 single axillary incision reverse sequence endoscopic nipple-sparing mastectomy procedures were performed in 81 gynecomastia patients. Among these 81 patients, 7 patients (8.6%) were classified as Simon grade I, 29 patients (35.8%) as grade IIa, 24 patients (29.6%) as grade IIb, and 21 patients (25.9%) as grade III. In the patient-reported cosmetic results, the overall satisfaction score was 8.4 ± 1.4. A total of 74.1% of patients were highly satisfied, and 25.9% were satisfied. The overall complication rate was 10.1%, and only 1 patient had a major complication. According to the cumulative sum plot analysis, approximately 12 cases were needed for surgeon B and 11 cases for surgeon C to decrease their operation time significantly. Conclusions: R-E-NSM is safe and effective for all Simon grade gynecomastia patients, with excellent cosmetic results and a short learning curve. However, a long-term follow-up assessment is still needed. Level of Evidence IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266. [ABSTRACT FROM AUTHOR]

Abstract Study design Retrospective cohort study. Purpose To explore the complications and risk factors for total resection (TR) of primary thoracic and lumbar spinal tumors over the past decade at our institution. Methods Patients meeting inclusion criteria (primary spinal tumors, thoracic or lumbar location, TR at our center) were included. Demographic characteristics, surgical data, perioperative complications and management results were reviewed. Patients were stratified by tumor site, the number of excised segments, and recurrence status to elucidate distinctive characteristics. Results The cohort comprised 103 patients, with a mean age of 35.8 years. On average, 1.83 vertebral segments were resected per patient. Perioperative complications were substantial, totaling 166 events, with 71 classified as major and 95 as minor, yielding an average of 1.61 complications per patient. No perioperative deaths occurred, but 79 patients (76.7%) experienced at least one complication. Multiple vertebral sections correlated with a higher complication rate (P = 0.031), and lumbar surgeries exhibited elevated risks of large vascular injury (P = 0.001), neurological deterioration, and cerebrospinal fluid leakage compared to thoracic cases. Conversely, thoracic spinal procedures showed a higher rate of pleural effusion (P = 0.004). Binary logistics stepwise regression identified multi-segmental resection as the independent risk factor for major perioperative complications. Conclusions TR of primary spinal tumors is associated with a high perioperative complication rate, although most events have a favorable prognosis. Complication characteristics vary based on the surgical site, number of excised segments, and surgical history. A nuanced preoperative evaluating approach considering patient age, surgical segments, and extent of resection is crucial.

Abstract Background Reusable surgical drapes have a lower lifetime environmental impact than disposable drapes in most cases. There is limited evidence regarding whether drape choice impacts patient outcomes including post-operative wound complications. The aim of this study is to compare wound complication rates following routine neutering surgeries in cats and dogs when reusable drapes are used as compared with disposable drapes. Methods The trial will be conducted as a pragmatic, multi-centre, parallel group randomised controlled trial in the UK. Dogs and cats undergoing routine neutering will be randomised to disposable or reusable drapes with all other aspects of care occurring as they usually would at the practice. The required sample size is 2,850, with 4750 animals to be recruited from up to ten practices to allow for a 40% loss to follow-up. Demographic data and details on peri-operative care will be collected at the time of surgery. Post-operative wound complications will be assessed and recorded as usual at each practice using clinical codes. The post-operative wound clinical codes and any antibiotic use within 30 days of surgery will be retrieved from the practice management software. The primary outcome that will be compared between the two groups is the rate of post-operative wound complications within 30 days of surgery which will be analysed by multivariable logistic regression with a binary outcome of wound complication (yes/no). Secondary outcomes are the prevalence of different types of complications and antibiotic use within 30 days of surgery which will be compared between the two groups by chi square analysis. Discussion Our hypothesis is that there will be no difference in post-operative wound complication rates between disposable and reusable drapes. If the likely rate of post-surgical wound complications with reusable drapes is similar to that with disposable drapes, then veterinary clinical teams can choose the more sustainable option, confident that their patients will not be impacted by this choice. Trial registration We have retrospectively registered the protocol on the Open Science Framework on 14 Nov 2023 (Trial registration entry: https://doi.org/10.17605/OSF.IO/72HMA ).

Abstract Background Retained surgical items (RSI) are preventable events that pose a significant risk to patient safety. Current strategies for preventing RSIs rely heavily on manual instrument counting methods, which are prone to human error. This study evaluates the feasibility and performance of a deep learning-based computer vision model for automated surgical tool detection and counting. Methods A novel dataset of 1,004 images containing 13,213 surgical tools across 11 categories was developed. The dataset was split into training, validation, and test sets at a 60:20:20 ratio. An artificial intelligence (AI) model was trained on the dataset, and the model’s performance was evaluated using standard object detection metrics, including precision and recall. To simulate a real-world surgical setting, model performance was also evaluated in a dynamic surgical video of instruments being moved in real-time. Results The model demonstrated high precision (98.5%) and recall (99.9%) in distinguishing surgical tools from the background. It also exhibited excellent performance in differentiating between various surgical tools, with precision ranging from 94.0 to 100% and recall ranging from 97.1 to 100% across 11 tool categories. The model maintained strong performance on a subset of test images containing overlapping tools (precision range: 89.6–100%, and recall range 97.2–98.2%). In a real-time surgical video analysis, the model maintained a correct surgical tool count in all non-transition frames, with a median inference speed of 40.4 frames per second (interquartile range: 4.9). Conclusion This study demonstrates that using a deep learning-based computer vision model for automated surgical tool detection and counting is feasible. The model’s high precision and real-time inference capabilities highlight its potential to serve as an AI safeguard to potentially improve patient safety and reduce manual burden on surgical staff. Further validation in clinical settings is warranted.

Background: The caudate lobe (S1) of the liver, due to its deep central position, presents a formidable challenge for laparoscopic resection. Historical skepticism about laparoscopic approaches has been overshadowed by advancements in technology and technique, with recent studies showing comparable outcomes to open surgery. Methods: This paper introduces the "Easy First" technique and the Sextet strategies for laparoscopic hepatic caudate lobectomy. The strategies include meticulous preoperative planning, optimal trocar placement, and team positioning, tailored to the anatomical complexities of the caudate lobe. Results: With a 0% conversion and mortality rate, our series demonstrates the safety of the "Easy First" technique. The Sextet strategies have been instrumental in navigating the technical challenges, emphasizing the importance of patient selection and surgeon expertise. Conclusion: The "Easy First" technique, with its structured approach and the Sextet strategies, offers a replicable method for laparoscopic caudate lobectomy. It underscores the need for stringent patient selection, advanced technical skill, and high-volume center expertise to ensure procedural success and patient safety. [ABSTRACT FROM AUTHOR]

Background: Retained surgical items (RSI) are preventable events that pose a significant risk to patient safety. Current strategies for preventing RSIs rely heavily on manual instrument counting methods, which are prone to human error. This study evaluates the feasibility and performance of a deep learning-based computer vision model for automated surgical tool detection and counting. Methods: A novel dataset of 1,004 images containing 13,213 surgical tools across 11 categories was developed. The dataset was split into training, validation, and test sets at a 60:20:20 ratio. An artificial intelligence (AI) model was trained on the dataset, and the model's performance was evaluated using standard object detection metrics, including precision and recall. To simulate a real-world surgical setting, model performance was also evaluated in a dynamic surgical video of instruments being moved in real-time. Results: The model demonstrated high precision (98.5%) and recall (99.9%) in distinguishing surgical tools from the background. It also exhibited excellent performance in differentiating between various surgical tools, with precision ranging from 94.0 to 100% and recall ranging from 97.1 to 100% across 11 tool categories. The model maintained strong performance on a subset of test images containing overlapping tools (precision range: 89.6–100%, and recall range 97.2–98.2%). In a real-time surgical video analysis, the model maintained a correct surgical tool count in all non-transition frames, with a median inference speed of 40.4 frames per second (interquartile range: 4.9). Conclusion: This study demonstrates that using a deep learning-based computer vision model for automated surgical tool detection and counting is feasible. The model's high precision and real-time inference capabilities highlight its potential to serve as an AI safeguard to potentially improve patient safety and reduce manual burden on surgical staff. Further validation in clinical settings is warranted. [ABSTRACT FROM AUTHOR]

The COVID-19 pandemic has strained surgical systems worldwide and placed healthcare providers at risk in their workplace. To protect surgical care providers caring for patients with COVID-19, in May 2020 we developed a COVID-19 Surgical Patient Checklist (C19 SPC), including online training materials, to accompany the World Health Organization Surgical Safety Checklist. In October 2020, an online survey was conducted via partner and social media networks to understand perioperative clinicians' intraoperative practice and perceptions of safety while caring for COVID-19 positive patients and gain feedback on the utility of C19 SPC. Descriptive statistics were used to characterise responses by World Bank income classification. Qualitative analysis was performed to describe respondents' perceptions of C19 SPC and recommended modifications. Respondents included 539 perioperative clinicians from 63 countries. One-third of respondents reported feeling unsafe in their workplace due to COVID-19 with significantly higher proportions in low (39.8%) and lower-middle (33.9%) than higher income countries (15.6%). The most cited concern was the risk of COVID-19 transmission to self, colleagues and family. A large proportion of respondents (65.3%) reported that they had not used C19 SPC, yet 83.8% of these respondents felt it would be useful. Of those who reported that they had used C19 SPC, 62.0% stated feeling safer in the workplace because of its use. Based on survey results, modifications were incorporated into a subsequent version. Our survey findings suggest that perioperative clinicians report feeling unsafe at work during the COVID-19 pandemic. In addition, adjunct tools such as the C19 SPC can help to improve perceived safety.

Abstract Background Personalised theatre caps have been shown to improve staff communication in the operating theatre. The impact of these caps on the patient perioperative experience, particularly in Indigenous Australian patients, has not been well established. Methodology Surgical patients and operating theatre staff at Royal Darwin Hospital in Australia were surveyed before and after the introduction of Indigenous art-themed personalised (name and role) theatre caps in October 2021 and January 2022. Staff name and role visibility in operating theatres was also audited. Results A total of 223 staff and patients completed surveys. Most patients reported the theatre caps to be helpful (90%, 95% confidence interval [CI] 81–99) and felt more comfortable because staff were wearing them (91%, 95% CI 82–100). These results were consistent across Indigenous and non-Indigenous patients. The majority of staff agreed that personalised name and role theatre caps improved staff communication (89%, 95% CI 81–97), improved the staff-patient interaction (77%, 95% CI 67–87), and made it easier to use staff names (100%). Staff name and role visibility increased from 8 to 51% (p

Background: Strengthening health systems through planned safety and quality improvement initiatives is an imperative to achieve more equitable, resilient, and effective care. And yet, years of organizational behavior research demonstrate that change initiatives often fall short because managers fail to account for organizational readiness for change. This finding remains true especially among surgical safety and quality improvement initiatives in low-income countries and middle-income countries. In this study, our aim was to psychometrically assess the construct validity and internal consistency of the Safe Surgery Organizational Readiness Tool (SSORT), a short survey tool designed to provide change leaders with insight into facility infrastructure that supports learning and readiness to undertake change. Materials and methods: To demonstrate generalizability and achieve a large sample size (n=1706) to conduct exploratory factor analysis (EFA) and confirmatory factor analysis (CFA), a collaboration between seven surgical and anesthesia safety and quality improvement initiatives was formed. Collected survey data from health care workers were divided into pilot, exploration, and confirmation samples. The pilot sample was used to assess feasibility. The exploration sample was used to conduct EFA, while the confirmation sample was used to conduct CFA. Factor internal consistency was assessed using Cronbach's alpha coefficient. Results: Results of the EFA retained 9 of the 16 proposed factors associated with readiness to change. CFA results of the identified 9 factor model, measured by 28 survey items, demonstrated excellent fit to data. These factors (appropriateness, resistance to change, team efficacy, team learning orientation, team valence, communication about change, learning environment, vision for sustainability, and facility capacity) were also found to be internally consistent. Conclusion: Our findings suggest that communication, team learning, and supportive environment are components of change readiness that can be reliably measured prior to implementation of projects that promote surgical safety and quality improvement in low-income countries and middle-income countries. Future research can link performance on identified factors to outcomes that matter most to patients. [ABSTRACT FROM AUTHOR]

Adverse surgical events cause negative patient health outcomes and harm that can often overshadow the safe and effective patient care provided daily by nurses as members of interprofessional healthcare teams. Near misses occur far more frequently than adverse events and are less visible to nurse leaders because patient harm is avoided due to chance, prevention, or mitigation. However, near misses have comparable root causes to adverse events and exhibit the same underlying patterns of failure. Reviewing near misses provides nurses with learning opportunities to identify patient care weaknesses and build appropriate solutions to enhance care. As the operating room is one of the most complex work settings in healthcare, identifying potential weaknesses or sources for errors is vital to reduce healthcare-associated risks for patients and staff. The purpose of this manuscript is to educate, inform, and stimulate critical thinking by discussing perioperative near miss case studies and the underlying factors that lead to errors. Our authors discuss 15 near miss case studies occurring across the perioperative patient experience of care and discuss barriers to near miss reporting. Nurse leaders can use our case studies to stimulate discussion among perioperative and perianesthesia nurses in their hospitals to inform comprehensive risk reduction programs. [ABSTRACT FROM AUTHOR]

Background: Personalised theatre caps have been shown to improve staff communication in the operating theatre. The impact of these caps on the patient perioperative experience, particularly in Indigenous Australian patients, has not been well established. Methodology: Surgical patients and operating theatre staff at Royal Darwin Hospital in Australia were surveyed before and after the introduction of Indigenous art-themed personalised (name and role) theatre caps in October 2021 and January 2022. Staff name and role visibility in operating theatres was also audited. Results: A total of 223 staff and patients completed surveys. Most patients reported the theatre caps to be helpful (90%, 95% confidence interval [CI] 81–99) and felt more comfortable because staff were wearing them (91%, 95% CI 82–100). These results were consistent across Indigenous and non-Indigenous patients. The majority of staff agreed that personalised name and role theatre caps improved staff communication (89%, 95% CI 81–97), improved the staff-patient interaction (77%, 95% CI 67–87), and made it easier to use staff names (100%). Staff name and role visibility increased from 8 to 51% (p < 0.001) after the introduction of personalised theatre caps. Conclusions: The introduction of Indigenous art-themed personalised theatre caps for operating theatre staff at Royal Darwin Hospital improved perceived staff communication and the patient perioperative experience. [ABSTRACT FROM AUTHOR]

The WHO Surgical Safety Checklist (SSC) continues to show inconsistent success in reducing surgical complications in high-income settings. Previous implementation research identified potential barriers and facilitators to success, but it primarily consists of qualitative studies with small sample sizes in limited geographic areas. We conducted a multi-country mixed-methods study of barriers and facilitators to SSC implementation to better inform policies and practices for improving SSC buy-in and use to maximize its impact. This convergent parallel mixed-methods study utilized survey and interview data from surgical team members practicing in five countries. Survey data were analyzed using χ2 analysis or Fisher’s exact test for categorical variables and McNemar’s test to analyze differences between related groups for dichotomous variables. Interview data underwent inductive coding followed by thematic analysis for predominant themes common across the study countries. The study resulted in 2,032 survey responses and 51 interviews. Facilitators to success included having influential multi-disciplinary champions from surgery, anesthesiology, and nursing; using a distributed leadership process to promote ownership across all surgical team members; and providing education on the “why” of the checklist. Practitioners found patient safety metrics (e.g., wrong side surgery) more relevant than clinical outcome measures (e.g., surgical mortality) to assess SSC success. Finally, auditing for process engagement was felt to promote more meaningful use than auditing for checklist completion. Our international examination of barriers and facilitators to successful SSC implementation has identified more specific guidance for high-income settings that integrate people, data, and processes.

Proficiency in nontechnical skills (NTS) contributes to reduction in critical safety incidents and improvement in patient safety outcomes. Despite evidence demonstrating the importance of NTS in patient safety, there remains limited NTS specific curricula and formal teaching in Canadian surgical programs. We propose a three-stage longitudinal approach to education surrounding NTS using the Nontechnical skills for surgeons (NOTSS) framework.

Background: The Critical View of Safety (CVS) was proposed in 1995 to prevent bile duct injury during laparoscopic cholecystectomy (LC). The achievement of CVS was evaluated subjectively. This study aimed to develop an artificial intelligence (AI) system to evaluate CVS scores in LC. Materials and methods: AI software was developed to evaluate the achievement of CVS using an algorithm for image classification based on a deep convolutional neural network. Short clips of hepatocystic triangle dissection were converted from 72 LC videos, and 23,793 images were labeled for training data. The learning models were examined using metrics commonly used in machine learning. Results: The mean values of precision, recall, F-measure, specificity, and overall accuracy for all the criteria of the best model were 0.971, 0.737, 0.832, 0.966, and 0.834, respectively. It took approximately 6 fps to obtain scores for a single image. Conclusions: Using the AI system, we successfully evaluated the achievement of the CVS criteria using still images and videos of hepatocystic triangle dissection in LC. This encourages surgeons to be aware of CVS and is expected to improve surgical safety. [ABSTRACT FROM AUTHOR]

Background: Most bile duct (BDI) injuries during laparoscopic cholecystectomy (LC) occur due to visual misperception leading to the misinterpretation of anatomy. Deep learning (DL) models for surgical video analysis could, therefore, support visual tasks such as identifying critical view of safety (CVS). This study aims to develop a prediction model of CVS during LC. This aim is accomplished using a deep neural network integrated with a segmentation model that is capable of highlighting hepatocytic anatomy. Methods: Still images from LC videos were annotated with four hepatocystic landmarks of anatomy segmentation. A deep autoencoder neural network with U-Net to investigate accurate medical image segmentation was trained and tested using fivefold cross-validation. Accuracy, Loss, Intersection over Union (IoU), Precision, Recall, and Hausdorff Distance were computed to evaluate the model performance versus the annotated ground truth. Results: A total of 1550 images from 200 LC videos were annotated. Mean IoU for segmentation was 74.65%. The proposed approach performed well for automatic hepatocytic landmarks identification with 92% accuracy and 93.9% precision and can segment challenging cases. Conclusion: DL, can potentially provide an intraoperative model for surgical video analysis and can be trained to guide surgeons toward reliable hepatocytic anatomy segmentation and produce selective video documentation of this safety step of LC. [ABSTRACT FROM AUTHOR]

Introduction: There is an ongoing concern about the potential infectious risk due to pneumoperitoneal gas leakage from surgical trocars in laparoscopic surgery. We aimed to visually confirm the presence of leakage from trocars and investigate the changes in the leakage scale according to intra-abdominal pressures and trocar types. Material and methods: We established a porcine pneumoperitoneum model and performed experimental forceps manipulation using 5-mm grasping forceps with 12-mm trocars. The gas leakage, if any, was imaged using a Schlieren optical system, which can visualize minute gas flow invisible to the naked eye. For measuring the scale, we calculated the gas leakage velocity and area using image analysis software. Four types of unused and exhausted disposable trocars were compared. Results: Gas leakage was observed from trocars during forceps insertion and removal. Both the gas leakage velocity and area increased as the intra-abdominal pressure increased. Every type of trocar we handled was associated with gas leakage, and exhausted disposable trocars had the largest scale gas leakage. Conclusions: We confirmed gas leakage from trocars during device traffic. The scale of leakage increased with high intra-abdominal pressure and with the use of exhausted trocars. Current protection against gas leakage may not be sufficient and new surgical safety measures and device development may be needed in the future. [ABSTRACT FROM AUTHOR]

To translate the Patients' Perspectives of Surgical Safety (PPSS) questionnaire into Norwegian and to test it for structural validity and internal consistency. This is a methodological study. The original 20-item PPSS questionnaire was translated into Norwegian using a model of translation-back translation. We assessed content validity via a pretest with 20 surgical patients. A sample of 218 surgical patients in a university hospital in Norway completed the PPSS questionnaire. Psychometric analysis included item characteristics, and structural validity was evaluated by an exploratory factor analysis. Internal consistency was calculated using Cronbach's alpha. We successfully translated and adapted the Norwegian PPSS questionnaire. Completion rate was 74%. Missing values were less than 5% and all 20 items had a high skewness (≥15 %) ranging from 52.8% to 95.9%. The exploratory factor analysis yielded two significant factors that explained 45.15% of variance. The Cronbach's alpha for Factor 1 "Team interaction safety" was 0.88 and for Factor 2 "Patient's ID safety", 0.82. Overall, most patients reported a high sense of surgical safety. The first Norwegian version of the PPSS measuring surgical patients' perception shows promising psychometric properties regarding structural validity and internal consistency. However, future research on PPSS should provide an examination of construct validity, validation and testing in other populations of surgical patients. To improve safety of the surgical trajectory, it is necessary to pay more attention to patients' perceptions of surgical safety. [ABSTRACT FROM AUTHOR]

This study seeks to improve the safety of clinical care provided in operating rooms (OR) by examining how characteristics of both the physical environment and the procedure affect surgical team movement and contacts. We video recorded staff movements during a set of surgical procedures. Then we divided the OR into multiple zones and analyzed the frequency and duration of movement from origin to destination through zones. This data was abstracted into a generalized, agent-based, discrete event simulation model to study how OR size and OR equipment layout affected surgical staff movement and total number of surgical team contacts during a procedure. A full factorial experiment with seven input factors – OR size, OR shape, operating table orientation, circulating nurse (CN) workstation location, team size, number of doors, and procedure type – was conducted. Results were analyzed using multiple linear regression with surgical team contacts as the dependent variable. The OR size, the CN workstation location, and team size significantly affected surgical team contacts. Also, two- and three-way interactions between staff, procedure type, table orientation, and CN workstation location significantly affected contacts. We discuss implications of these findings for OR managers and for future research about designing future ORs. [ABSTRACT FROM AUTHOR]

Objective: To analyze the risk factors for postoperative complications of the elderly patients with primary retroperitoneal sarcoma(RPS). Methods: A retrospective cohort study was performed for elderly patients with primary RPS treated by soft tissue sarcoma multidisciplinary team Zhongshan Hospital from July 2009 to December 2020. Logistic regression analysis was used to find risk factors for postoperative complications. Results: A total of 98 cases were enrolled including male 54 cases and female 44 cases with 26 cases (26.5%) of age 70 years or older. Five-year overall survival following surgery was 61.2% (60 cases with 95% confidence interval, 49.1-73.7). Seventy-eight cases (79.6%) had tumor burden greater than 10 cm, and 87 cases (88.8%) with single lesion. There were 35 cases (35.7%) with well-differentiated liposarcoma, 31 cases (31.6%) with dedifferentiated liposarcoma, and 15 cases (15.3%) with leiomyosarcoma. A total of 96 cases(98.0%) underwent radical resection and 54 cases (55.1%) had more than one organ resected. The postoperative complications were found 55 cases (56.1%) and severe complications 16 cases (16.3%). Four cases (4.1%) died postoperatively. It was shown by multivariate analysis that both tumor burden greater than 10 cm (OR=4.597, P=0.012) and more than one organ resected (OR=4.858, P=0.003) were independent risk factors for postoperative complications in elderly patients with RPS. Conclusions: Operative treatment remained the preferred type for elderly cases with primary RPS and the surgery should be completed in high-flow centers of RPS.

Background: Standards for reporting surgical adverse events (AEs) vary widely within the scientific literature. Failure to adequately capture AEs hinders efforts to measure the safety of healthcare delivery and improve the quality of care. The aim of the present study is to assess the prevalence and typology of perioperative AE reporting guidelines among surgery and anesthesiology journals. Materials and methods: In November 2021, three independent reviewers queried journal lists from the SCImago Journal & Country Rank (SJR) portal (www.scimagojr.com), a bibliometric indicator database for surgery and anesthesiology academic journals. Journal characteristics were summarized using SCImago, a bibliometric indicator database extracted from Scopus journal data. Quartile 1 (Q1) was considered the top quartile and Q4 bottom quartile based on the journal impact factor. Journal author guidelines were collected to determine whether AE reporting recommendations were included and, if so, the preferred reporting procedures. Results: Of 1409 journals queried, 655 (46.5%) recommended surgical AE reporting. Journals most likely to recommend AE reporting were: by category surgery (59.1%), urology (53.3%), and anesthesia (52.3%); in top SJR quartiles (i.e. more influential); by region, based in Western Europe (49.8%), North America (49.3%), and the Middle East (48.3%). Conclusions: Surgery and anesthesiology journals do not consistently require or provide recommendations on perioperative AE reporting. Journal guidelines regarding AE reporting should be standardized and are needed to improve the quality of surgical AE reporting with the ultimate goal of improving patient morbidity and mortality. [ABSTRACT FROM AUTHOR]

Background: The rate of bile duct injury in laparoscopic cholecystectomy (LC) continues to be high due to low critical view of safety (CVS) achievement and the absence of an effective quality control system. The development of an intelligent system enables the automatic quality control of LC surgery and, eventually, the mitigation of bile duct injury. This study aims to develop an intelligent surgical quality control system for LC and using the system to evaluate LC videos and investigate factors associated with CVS achievement. Materials and methods: SurgSmart, an intelligent system capable of recognizing surgical phases, disease severity, critical division action, and CVS automatically, was developed using training datasets. SurgSmart was also applied in another multicenter dataset to validate its application and investigate factors associated with CVS achievement. Results: SurgSmart performed well in all models, with the critical division action model achieving the highest overall accuracy (98.49%), followed by the disease severity model (95.45%) and surgical phases model (88.61%). CVSI, CVSII, and CVSIII had an accuracy of 80.64, 97.62, and 78.87%, respectively. CVS was achieved in 4.33% in the system application dataset. In addition, the analysis indicated that surgeons at a higher hospital level had a higher CVS achievement rate. However, there was still considerable variation in CVS achievement among surgeons in the same hospital. Conclusions: SurgSmart, the surgical quality control system, performed admirably in our study. In addition, the system's initial application demonstrated its broad potential for use in surgical quality control. [ABSTRACT FROM AUTHOR]

Objective To investigate the outcome of patients with esophagogastric junction cancer undergoing thoracoscopic laparoscopy-assisted Ivor-Lewis resection. Methods Eighty-four patients who were diagnosed with esophagogastric junction cancer and underwent Ivor-Lewis resection assisted by thoracoscopic laparoscopy at the National Cancer Center from October 2019 to April 2022 were collected. The neoadjuvant treatment mode, surgical safety and clinicopathological characteristics were analyzed. Results Siewert type Ⅱ (92.8%) and adenocarcinoma (95.2%) were predominant in the cases. A total of 2 774 lymph nodes were dissected in 84 patients. The average number was 33 per case, and the median was 31. Lymph node metastasis was found in 45 patients, and the lymph node metastasis rate was 53.6% (45/84). The total number of lymph node metastasis was 294, and the degree of lymph node metastasis was 10.6%(294/2 774). Among them, abdominal lymph nodes (100%, 45/45) were more likely to metastasize than thoracic lymph nodes (13.3%, 6/45). Sixty-eight patients received neoadjuvant therapy before surgery, and nine patients achieved pathological complete remission (pCR) (13.2%, 9/68). Eighty-three patients had negative surgical margins and underwent R0 resection (98.8%, 83/84). One patient, the intraoperative frozen pathology suggested resection margin was negative, while vascular tumor thrombus was seen on the postoperative pathological margin, R1 resection was performed (1.2%, 1/84). The average operation time of the 84 patients was 234.5 (199.3, 275.0) minutes, and the intraoperative blood loss was 90 (80, 100) ml. One case of intraoperative blood transfusion, one case of postoperative transfer to ICU ward, two cases of postoperative anastomotic leakage, one case of pleural effusion requiring catheter drainage, one case of small intestinal hernia with 12mm poke hole, no postoperative intestinal obstruction, chyle leakage and other complications were observed. The number of deaths within 30 days after surgery was 0. Number of lymph nodes dissection, operation duration, and intraoperative blood loss were not related to whether neoadjuvant therapy was performed (P>0.05). Preoperative neoadjuvant chemotherapy combined with radiotherapy or immunotherapy was not related to whether postoperative pathology achieved pCR (P>0.05). Conclusion Laparoscopic-assisted Ivor-Lewis surgery for esophagogastric junction cancer has a low incidence of intraoperative and postoperative complications, high safety, wide range of lymph node dissection, and sufficient margin length, which is worthy of clinical promotion. [ABSTRACT FROM AUTHOR]

Background: The surgical environment needs special challenges to safeguarding patient safety. The checklist of WHO was presented as one means of reducing harm and improving the safety of patient during operating theatre. 147 Pregnant women underwent to obstetric operation during time of study and hospitalized for more than 24 h after the operation and Obstetric surgical teams performance. Methods: Cross sectional study conducted at operating room of obstetric department in Zagazig University Hospitals during the period of time from May 2017 to February 2018 for observation of Checklist of Surgical Safety for all included patients in this study by medical team. Results: Items of SSC sign in were fulfilled with percentage above 90% except that patients had confirmed and prophylaxis of venous thrombo-embolism was needed only in 3.4% of studied cases. Items of SSC time out were fulfilled with 100% as sterilization was been confirmed, Resuscitation unit was on, Resuscitation equipment was present and working. Other items were less as vocally confirmation of procedure, prophylatic antibiotic been administrated through the final 60 minutes before incision, expected losing of blood and any patient-specific concerns (80.3%, 85.7%, 87.1% and 95.9%). Items of SSC sign out were fulfilled 100%. Adverse events were 31.1% represented in 23.1% intraoperative hemorrhage and 5.4% bladder injury. There was no infectious adverse events in our study. 31.3% of our studied cases entered ICU post operation. Conclusion: Implementation of SSC was associated with reduction in complications and mortality in obstetric operations. [ABSTRACT FROM AUTHOR]

BackgroundOperating teams can decrease the likelihood of patient risk by using the WHO Surgical Safety Checklist. To ascertain the impact of demographic factors on behaviorally anchored ratings and investigate operating room (OR) staff attitudes toward checklist administration, we set out to better understand how OR personnel use the checklist in a tertiary care hospital in Pakistan.Materials and methodsA monocentric sequential mixed-methods study employing a quantitative approach of using World Health Organization Behaviorally Anchored Rating Scale (WHOBARS) assessments of surgical cases by OR personnel and two independent observers, who were certified surgeons having extensive experience in the rating of the WHOBARS scale for more than 1 year, followed by a qualitative approach of staff interviews were carried out in a tertiary care setting. In June and July 2022, over the period of 8 weeks, an intervention (training delivery) was implemented and evaluated. The information, skills, and behavior adjustments required to apply the checklist were taught in the course using lectures, videos, small group breakouts, participant feedback, and simulations.ResultsAfter the introduction of WHOBARS, 50.81% of respondents reported always using the checklist, with another 30.81% using it in part. Participants' years in practice, hospital size, or surgical volume did not predict checklist use. Checklist use was associated with always counting instruments (51.08%), patient identity (67.83%), difficult intubation risk (39.72%), the risk of blood loss (51.08%), prophylactic administration of an antibiotic (52.43%), and the use of pulse oximeter (46.75%). Interviewees felt that the checklist could promote teamwork and a safe culture, particularly enabling speaking up. Senior staff were of key importance in setting the appropriate tone.ConclusionThe use of a multi-disciplinary course for checklist implementation resulted in 50.81% of participants always using the checklist and an increase in counting surgical instruments. Successful checklist implementation was not predicted by the participant's length of medical service, hospital size, or surgical volume. If reproducible in other countries, widespread implementation in LMICs becomes a realistic possibility.

Introduction: The interval between neoadjuvant immunochemotherapy and surgery in patients with non-small cell lung cancer (NSCLC) has not been well characterized. This study investigated the association between the time-tosurgery (TTS) interval and surgical-pathological outcomes. Method: Clinical data of patients who received neoadjuvant immunochemotherapy followed by surgery for NSCLC between January 2019 and September 2021 were collected. The patients were divided into three groups based on TTS interval: the early-surgery group (ESG), the standard-surgery group (SSG), and the delayed-surgery group (DSG). The primary outcomes were objective response rate (ORR), major pathological response (MPR), and pathological complete response (pCR). The secondary endpoint was surgical outcome. Results: Of the 171 patients, 16 (9.4%) received surgery in =28 days, 49 (28.7%) received surgery within 29-42 days, and 106 (61.9%) received surgery in =43 days after neoadjuvant immunochemotherapy, with a median TTS of 46 days. The postoperative drainage of the ESG group (455.1 ml) was significantly less than that of the SSG group (680.7 ml) and the DSG group (846.5 ml; p = 0.037). However, the TTS interval did not influence the duration of the operation (P = 0.54), the extent of intraoperative bleeding (P = 0.60), or the length of postoperative hospital stay (P = 0.17). The ORR was observed in 69%, 51%, and 56% of patients in the ESG, the SSG, and the DSG, respectively (P = 0.46), and MPR occurred in 50%, 47%, and 58% (P = 0.38) of patients in the ESG, the SSG, and the DSG, respectively. Similarly, no statistically significant difference was found for pCR (ESG: 31%; SSG: 27%; DSG: 42%; P = 0.14). Conclusion: This retrospective study indicated that TTS exerts no significant effect on the feasibility and safety of surgery in the neoadjuvant immunochemotherapy setting of NSCLC. Analysis of the TTS interval revealed a tendency for delayed surgery to be associated with a pathological response in NSCLC, although this association was not statistically significant. [ABSTRACT FROM AUTHOR]

Introduction: The safety of laparoscopic surgery (LS) and its effect on survival have not been sufficiently assessed in elderly colon cancer patients. Methods: Clinicopathologic data of patients aged ≥75 years who underwent colectomy for primary colon cancer, between January 2018 and June 2021, were reviewed. Patients were divided into the LS and open surgery (OS) groups according to the intention-to-treat principle and were compared using propensity score matching. The primary outcomes were differences in surgical safety and 3-year survival. Results: There were 98 patients with a median age of 82 years and 85 patients with a median age of 80 years assigned to the OS and LS groups, respectively. Propensity score matching revealed that LS did not prolong the operative time (190 vs. 180 min, p = 0.209) and was linked to less intraoperative blood loss (50 vs. 100 mL, p = 0.039) and shorter postoperative hospital stay (8 vs. 10 days, p = 0.005), compared to OS. In addition, LS was not accompanied by more stress response when the variations exhibited in laboratory tests and the Barthel index pre- and postsurgery were considered. There were no significant differences in the adjusted 3-year overall survival (86.0% vs. 81.2%, p = 0.795) and disease-free survival (86.6% vs. 87.9%, p = 0.356) between the groups. Conclusion: LS enhanced postoperative recovery without increasing surgical risks, compared to OS, in colon cancer patients aged ≥75 years. Furthermore, no significant differences in the 3-year adjusted survival were observed between the groups. [ABSTRACT FROM AUTHOR]

Study Design: Retrospective observational cohort. Objective: A review of efficiency and safety of fluoroscopy and stereotactic navigation system for minimally invasive (MIS) Sacroiliac (SI) fusion through a lateral technique. Methods: Retrospective analysis of an observational cohort of 96 patients greater than 18 years old, that underwent MIS SI fusion guided by fluoroscopy or navigation between January 2013 and April 2020 with a minimum of 3 months follow-up. Intraoperative neuromonitoring (IONM) with a variable combination of electromyography (EMG), somatosensory evoked potentials (SSEPs) and motor evoked potentials (MEPs) was also utilized. Results: The overall complication rate in the study was 9.4%, and there was no difference between the fluoroscopy (10.1%), and navigation groups (8%). Neurological complication rate was 2.1%, without a significant difference between both intraoperative guidance modality groups (p = 0.227). There was a significant difference between the modalities of IONM used and the occurrence of neurological injury (p = 0.01).The 2 patients who had a neurological complication postoperatively were monitored only with EMG and SSEP, but none of the patients (n = 76) in which MEPs were utilized had neurologic complication. The mean pain improvement 3 months after surgery was greater in the navigation group (2.44 ± 2.72), but was not statistically different than the improvement in the fluoroscopy group (1.90 ± 2.07) (p = 0.301). Conclusions: No difference in the safety of the procedure was found between the fluoroscopy and the stereotactic navigation techniques. The contribution of the IONM to the safety of SI fusions could not be determined, but the data indicates that MEPs provide the highest level of sensitivity. [ABSTRACT FROM AUTHOR]

Introduction Adverse events in the operating room are considered unintended injuries or harm caused by healthcare rather than the patient's disease, leading to death, disability, or prolonged hospital stays. Methods A cross-sectional design was conducted following the random sampling method, on 200 surgical patients. A self-completed questionnaire was used, translated, and adapted into the Greek language. Results Most of the sample (57%) was male. The mean age was 67 years, and 52% were elementary school graduates. Upon analysis, significant correlations were observed between the two-administration (p<0.001) facts (intraclass correlation coefficient = 0.567), which reveal that the scale is stable through time. In addition, Cronbach's alpha had a value of 0.824 suggesting good internal consistency of the scale. Regarding the subscale, the first factor "safety regarding surgical procedure" was found 0.847, the second factor "effective communication and understanding" was 0.792, and finally the third factor "emotional security" was 0.506. A statistically significant difference found between the dimensions of safety in the operating room and the age of the patients was in the factor of emotional security, revealing that patients aged more than 70 were feeling more secure compared to younger patients (198) = 2.374, p=0.019. Conclusions The internal consistency of the Patients' Perspectives of Surgical Safety Scale (PPSS), weighted in a sample of the Greek population, is deemed satisfactory. The safety perceptions of surgical patients are at high levels., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. General Hospital of Corinth Ethics Committee issued approval 24351/1-10-2019. Animal subjects: All authors have confirmed that this study did not involve animal subjects or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Toska et al.)

Background: Mini 'C'-arm machine is an advanced medical imaging device used primarily for intraoperative imaging during surgical, orthopaedic and emergency care procedures. Since the technology is based on ionising radiation, safe usage of Mini 'C'-arm machine is mandatory to protect patients and operating personnel., Objective: The main objective is to describe the various components related to patients, operator and equipment to ensure safe usage of Mini 'C'-arm machine. A comprehensive search strategy using the PEO (Population, Exposure, Outcome) framework was conducted using Embase, PubMed, Google Scholar and ResearchGate databases to identify suitable literature. The keywords used for the search included 'Fluoroscopy', 'Ionising Radiation' and 'surgical safety'., Key Findings: Safe usage of Mini 'C'-arm equipment involves components of operator training, operator safety, patient safety, radiation dose, operating room logistics, handling of images and auditing of Mini 'C'-arm use., Conclusion: Mini 'C'-arm provides an invaluable, portable imaging tool in a spectrum of general surgical and orthopaedic interventional procedures. However, safe usage of Mini 'C'-arm machine requires a multifaceted approach including operator responsibility and safety, patient protection, equipment maintenance, radiation dose awareness, documentation and sound reporting mechanisms.

Remote-controlled vascular interventional robots have great potential for use in minimally invasive vascular surgeries in recent years due to their ability to reduce the occupational risk of surgeons and improve the stability and accuracy of surgical procedures. However, blood vessels will suffer from the damage caused by collision with medical instruments to some extent even though the surgeries are very successful. Moreover, when surgeons perform unsafe operations, the unsafe operations will not only seriously affect surgical safety (or even cause serious complications) but also restrict the continuity of operation. In this article, a multilevel concept for operating force is first introduced into surgical procedures as a reference for the choice and design of operation strategies. Based on this concept, a novel multilevel operation strategy is first proposed to reduce blood vessel damage, ensure surgical safety, and allow for continuous operation. This strategy can remind surgeons about the operative conditions in real-time, reduce collision to blood vessels, and eliminate unsafe operations online. A prototype was fabricated and calibrated through calibration experiments and the performance of the multilevel operation strategy was validated through in vitro and ex vivo experiments. Experimental results demonstrate the engineering effectiveness of the proposed method and motivate the need for further in vivo studies to evaluate improvement on surgical safety. [ABSTRACT FROM AUTHOR]

Background: Surgery is one of the most common patient experiences in the health care system. Yet, efforts to engage patients in surgical safety research have not matched those of other health care fields. This is a critical issue given the nature of surgery inhibits patients' abilities to advocate for themselves as they are typically under anesthetic when the procedure is performed. We partnered with patients throughout our research program, which uses the Operating Room Black Box® to enhance surgical patient safety through transparent and proactive analysis of human factors to detect and prevent avoidable errors. Main body: In this article, we outline the need for, and our approach to, patient engagement in surgical safety research. Our approach included a series of planned activities and skill development opportunities designed to build capacity and bring together patients, clinicians, and researchers to inform research and practice. We also conducted evaluation surveys during the first year of our program, which have indicated a positive experience by both patient partners and the research team. Conclusion: We believe our approach can serve as an important first step toward building a model for patient engagement in the surgical safety field and could significantly contribute to improved quality of care and outcomes for surgical patients. Plain English summary: Although surgery is one of the most common patient experiences, patients have not been engaged in surgical safety research. Patients were engaged as patient advisors in the use of the Operating Room Black Box® at The Ottawa Hospital. The Operating Room Black Box® is a tool that is used in the operating room (OR) which captures audio, video, patient vital signs and other information that are analyzed for research purposes. The aim of the OR Black Box® is to learn from experience and improve practice and care. Patient advisors influenced the nature of the activities undertaken, co-developed the communication materials for patients, evaluated patient engagement practices, and disseminated the research results. These patient engagement activities are an important first step in engaging patients in surgical safety research. [ABSTRACT FROM AUTHOR]

Background: During laparoscopy, the abdominal cavity is insufflated with carbon dioxide (CO2) that could become contaminated with viruses and surgical smoke. Medical staff is potentially exposed when this gas leaks into the operating room through the instruments and past trocar valves. No detailed studies currently exist that have quantified these leakage pathways. Therefore, the goal of this study was to quantify the gas leakages through trocars and instruments, during minimally invasive procedures. Methods: A model of the surgical environment was created, consisting of a rigid container with an interface for airtight clamping of laparoscopic equipment such as trocars and surgical instruments. The model was insufflated to 15 mm Hg using a pressure generator and a pneumotachograph measured the equipment gas leak. A protocol of several use cases was designed to simulate the motions and forces the surgeon exerts on the trocar during surgery. Results: Twenty-three individual trocars and twenty-six laparoscopic instruments were measured for leakage under the different conditions of the protocol. Trocar leakages varied between 0 L/min and more than 30 L/min, the instruments revealed a range of leakages between 0 L/min and 5.5 L/min. The results showed that leakage performance varied widely between trocars and instruments and that the performance and location of the valves influenced trocar leakage. Conclusions: We propose trocar redesigns to overcome specific causes of gas leaks. Moreover, an international testing standard for CO2 leakage for all new trocars and instruments is needed so surgical teams can avoid this potential health hazard when selecting new equipment. [ABSTRACT FROM AUTHOR]

Abstract The criteria and candidacy for pediatric cochlear implantation (CI) has significantly transformed over the past few decades and continues to evolve with technological advancements, and recognition of benefit in more diverse populations. Prolonged auditory deprivation among patients with profound sensorineural hearing loss has been shown to cause widespread degeneration in the central auditory system. Thus, there is increasing evidence advocating for earlier implantation within a critical neuroplastic window. However, there is a lack of consensus on this optimal age of implantation. Historically, there were concerns regarding surgical feasibility and safety, anesthesia risk, and logistical considerations in very young infants

BackgroundThe achievement rate of the critical view of safety during laparoscopic cholecystectomy is much lower than expected. This original study aims to investigate and analyze factors associated with a low critical view of safety achievement.Materials and MethodsWe prospectively collected laparoscopic cholecystectomy videos performed from September 2, 2021, to September 19, 2021, in Sichuan Province, China. The artificial intelligence system, SurgSmart, analyzed videos under the necessary corrections undergone by expert surgeons. Also, we distributed questionnaires to surgeons and analyzed them along with surgical videos simultaneously.ResultsWe collected 169 laparoscopic cholecystectomy surgical videos undergone by 124 surgeons, among which 105 participants gave valid answers to the questionnaire. Excluding those who conducted the bail-out process directly, the overall critical view of safety achievement rates for non-inflammatory and inflammatory groups were 18.18% (18/99) and 9.84% (6/61), respectively. Although 80.95% (85/105) of the surgeons understood the basic concept of the critical view of safety, only 4.76% (5/105) of the respondents commanded all three criteria in an error-free way. Multivariate logistic regression results showed that an unconventional surgical workflow (OR:12.372, P

Objective: To develop a deep learning model to automatically segment hepatocystic anatomy and assess the criteria defining the critical view of safety (CVS) in laparoscopic cholecystectomy (LC). Background: Poor implementation and subjective interpretation of CVS contributes to the stable rates of bile duct injuries in LC. As CVS is assessed visually, this task can be automated by using computer vision, an area of artificial intelligence aimed at interpreting images. Methods: Still images from LC videos were annotated with CVS criteria and hepatocystic anatomy segmentation. A deep neural network comprising a segmentation model to highlight hepatocystic anatomy and a classification model to predict CVS criteria achievement was trained and tested using 5-fold cross validation. Intersection over union, average precision, and balanced accuracy were computed to evaluate the model performance versus the annotated ground truth. Results: A total of 2854 images from 201 LC videos were annotated and 402 images were further segmented. Mean intersection over union for segmentation was 66.6%. The model assessed the achievement of CVS criteria with a mean average precision and balanced accuracy of 71.9% and 71.4%, respectively. Conclusions: Deep learning algorithms can be trained to reliably segment hepatocystic anatomy and assess CVS criteria in still laparoscopic images. Surgical-technical partnerships should be encouraged to develop and evaluate deep learning models to improve surgical safety. [ABSTRACT FROM AUTHOR]

Abstract Objective Noise in operating rooms (OR) can have negative effects on both patients and surgical care workers. Noise can also impact surgical performance, team communication, and patient outcomes. Such implications of noise have been studied in orthopedics, neurosurgery, and urology. High noise levels have also been demonstrated in Otolaryngology-Head and Neck Surgery (OHNS) procedures. Despite this, no previous study has amalgamated the data on noise across all OHNS ORs to determine how much noise is present during OHNS surgeries. This study aims to review all the literature on noise associated with OHNS ORs and procedures. Methods Ovid Medline, EMBASE Classic, Pubmed, SCOPUS and Cochrane databases were searched following PRISMA guidelines. Data was collected on noise measurement location and surgery type. Descriptive results and statistical analysis were completed using Stata. Results This search identified 2914 articles. Final inclusion consisted of 22 studies. The majority of articles analyzed noise level exposures during mastoid surgery (18/22, 82%). The maximum noise level across all OHNS ORs and OHNS cadaver studies were 95.5 a-weighted decibels (dBA) and 106.6 c-weighted decibels (dBC), respectively (P = 0.2068). The mean noise level across all studies was significantly higher in OHNS cadaver labs (96.9 dBA) compared to OHNS ORs (70.1 dBA) (P = 0.0038). When analyzed together, the mean noise levels were 84.9 dBA. Conclusions This systematic review demonstrates that noise exposure in OHNS surgery exceeds safety thresholds. Further research is needed to understand how noise may affect team communication, surgical performance and patient outcomes in OHNS ORs. Graphical abstract

Summary: We implemented the World Health Organization surgical safety checklist at Auckland City Hospital from November 2007. We hypothesised that the checklist would reduce postoperative mortality and increase days alive and out of hospital, both measured to 90 postoperative days. We compared outcomes for cohorts who had surgery during 18‐month periods before vs. after checklist implementation. We also analysed outcomes during 9 years that included these periods (July 2004–December 2013). We analysed 9475 patients in the 18‐month period before the checklist and 10,589 afterwards. We analysed 57,577 patients who had surgery from 2004 to 2013. Mean number of days alive and out of hospital (95%CI) in the cohort after checklist implementation was 1.0 (0.4–1.6) days longer than in the cohort preceding implementation, p < 0.001. Ninety‐day mortality was 395/9475 (4%) and 362/10,589 (3%) in the cohorts before and after checklist implementation, multivariable odds ratio (95%CI) 0.93 (0.80–1.09), p = 0.4. The cohort changes in these outcomes were indistinguishable from longer‐term trends in mortality and days alive and out of hospital observed during 9 years, as determined by Bayesian changepoint analysis. Postoperative mortality to 90 days was 228/5686 (4.0%) for Māori and 2047/51,921 (3.9%) for non‐Māori, multivariable odds ratio (95%CI) 0.85 (0.73–0.99), p = 0.04. Māori spent on average (95%CI) 1.1 (0.5–1.7) fewer days alive and out of hospital than non‐Māori, p < 0.001. In conclusion, our patients experienced improving postoperative outcomes from 2004 to 2013, including the periods before and after implementation of the surgical checklist. Māori patients had worse outcomes than non‐Māori. [ABSTRACT FROM AUTHOR]

Background: Although reduced port laparoscopic surgery (RPLS), defined as laparoscopic surgery performed with the minimum possible number of ports and/or small-sized ports, is less invasive than conventional laparoscopic surgery by reducing the number of surgical wounds, an extension of the incision is still needed for specimen extraction, which can undermine the merits of RPLS. Objective: To determine the impact of natural orifice specimen extraction (NOSE) in patients undergoing RPLS for colorectal cancer. The endpoints were perioperative outcome and oncologic safety at 3 years. Setting: Single-center experience (2013–2019). Patients: We retrospectively analyzed our prospectively collected patient records (American Joint Committee on Cancer (AJCC) stage I–III sigmoid or upper rectal cancer (tumor diameter ≤ 5 cm) who underwent curative anterior resection via RPLS. We excluded patients who did not undergo intestinal anastomosis. Interventions: Perioperative and oncologic outcomes were compared between patients undergoing natural orifice (RPLS-NOSE) or conventional (mini-laparotomy) specimen extraction (RPLS-CSE). Patients were matched by propensity scores 1:1 for tumor diameter, AJCC stage, American Society of Anesthesiologists score and tumor location. Results: Of 119 eligible patients, 104 were matched (52 RPLS-NOSE; 52 RPLS-CSE) by propensity scores. Compared with RPLS-CSE, RPLS-NOSE was associated with longer operative time (223.9 vs. 188.7 min; p = 0.003), decreased use of analgesics (morphine dose 33.9 vs. 43.4 mg; p = 0.011) and duration of hospital stay (4.2 vs. 5.1 days; p = 0.001). No statistically significant difference was found in morbidity or wound-related complication rates between the two groups. After a median follow-up of 34.3 months, no local recurrence was observed in RPLS-NOSE. The 3-year disease-free survival did not differ statistically significantly between groups (90.9 vs. 90.5%; p = 0.610). Conclusion: NOSE enhances the advantages of RPLS by avoiding the need for abdominal wall specimen extraction in patients with tumor diameter ≤ 5 cm. Surgical and oncologic safety are comparable to RPLS with CSE. [ABSTRACT FROM AUTHOR]