Leveraging the Apple Ecosystem: Easy Viewing and Sharing of Three-dimensional Perforator Visualizations via iPad/iPhone-based Augmented Reality.

We introduce a novel technique using augmented reality (AR) on smartphones and tablets, making it possible for surgeons to review perforator anatomy in three dimensions on the go. Autologous breast reconstruction with abdominal flaps remains challenging due to the highly variable anatomy of the deep inferior epigastric artery. Computed tomography angiography has mitigated some but not all challenges. Previously, volume rendering and different headsets were used to enable better three-dimensional (3D) review for surgeons. However, surgeons have been dependent on others to provide 3D imaging data. Leveraging the ubiquity of Apple devices, our approach permits surgeons to review 3D models of deep inferior epigastric artery anatomy segmented from abdominal computed tomography angiography directly on their iPhone/iPad. Segmentation can be performed in common radiology software. The models are converted to the universal scene description zipped format, which allows immediate use on Apple devices without third-party software. They can be easily shared using secure, Health Insurance Portability and Accountability Act-compliant sharing services already provided by most hospitals. Surgeons can simply open the file on their mobile device to explore the images in 3D using "object mode" natively without additional applications or can switch to AR mode to pin the model in their real-world surroundings for intuitive exploration. We believe patient-specific 3D anatomy models are a powerful tool for intuitive understanding and communication of complex perforator anatomy and would be a valuable addition in routine clinical practice and education. Using this one-click solution on existing devices that is simple to implement, we hope to streamline the adoption of AR models by plastic surgeons.

Suture Packaging as a Marker for Intraoperative Image Alignment in Augmented Reality on Mobile Devices.

Preoperative vascular imaging has become standard practice in the planning of microsurgical breast reconstruction. Currently, translating perforator locations from radiological findings to a patient's abdomen is often not easy or intuitive. Techniques using three-dimensional printing or patient-specific guides have been introduced to superimpose anatomy onto the abdomen for reference. Augmented and mixed reality is currently actively investigated for perforator mapping by superimposing virtual models directly onto the patient. Most techniques have found only limited adoption due to complexity and price. Additionally, a critical step is aligning virtual models to patients. We propose repurposing suture packaging as an image tracking marker. Tracking markers allow quick and easy alignment of virtual models to the individual patient's anatomy. Current techniques are often complicated or expensive and limit intraoperative use of augmented reality models. Suture packs are sterile, readily available, and can be used to align abdominal models on the patients. Using an iPad, the augmented reality models automatically align in the correct position by using a suture pack as a tracking marker. Given the ubiquity of iPads, the combination of these devices with readily available suture packs will predictably lower the barrier to entry and utilization of this technology. Here, our workflow is presented along with its intraoperative utilization. Additionally, we investigated the accuracy of this technology.

The Reconstructive Metaverse - Collaboration in Real-Time Shared Mixed Reality Environments for Microsurgical Reconstruction.

Plastic surgeons routinely use 3D-models in their clinical practice, from 3D-photography and surface imaging to 3D-segmentations from radiological scans. However, these models continue to be viewed on flattened 2D screens that do not enable an intuitive understanding of 3D-relationships and cause challenges regarding collaboration with colleagues. The Metaverse has been proposed as a new age of applications building on modern Mixed Reality headset technology that allows remote collaboration on virtual 3D-models in a shared physical-virtual space in real-time. We demonstrate the first use of the Metaverse in the context of reconstructive surgery, focusing on preoperative planning discussions and trainee education. Using a HoloLens headset with the Microsoft Mesh application, we performed planning sessions for 4 DIEP-flaps in our reconstructive metaverse on virtual patient-models segmented from routine CT angiography. In these sessions, surgeons discuss perforator anatomy and perforator selection strategies whilst comprehensively assessing the respective models. We demonstrate the workflow for a one-on-one interaction between an attending surgeon and a trainee in a video featuring both viewpoints as seen through the headset. We believe the Metaverse will provide novel opportunities to use the 3D-models that are already created in everyday plastic surgery practice in a more collaborative, immersive, accessible, and educational manner.

Beyond the Signature: Informed Consent from a Legal Perspective and its Implications for Plastic Surgery.

SUMMARY: Informed consent is the principal tool that bridges the gap between clinical practice and our society's ethical ideals. The intricacies of informed consent, however, are frequently misunderstood and its effective implementation can be challenging in practice. The continuous stream of innovations, wide array of procedures, and other characteristics inherent to the practice of plastic surgery compound the challenges of implementing informed consent. Unfortunately, there remains a dearth of literature to provide a comprehensive overview of informed consent as it relates to plastic surgery. In this article, we highlight the history, legal components, and challenges of informed consent within plastic surgery and offer recommendations on how to approach them. A deeper understanding of informed consent helps enhance patient care, mitigates unnecessary malpractice risk, and leads to better physician-patient relationships.

Semi-simultaneous hand-assisted laparoscopic (HAL) bilateral nephrectomy and kidney transplantation from the same incision in ADPKD, first case report in Saudi Arabia.

This case report discusses the management of a 46-year-old male patient with autosomal dominant polycystic kidney disease and a high body mass index, who underwent a semi-simultaneous procedure involving hand-assisted laparoscopic bilateral nephrectomy to alleviate severe abdominal symptoms and prepare for a kidney transplantation, all using the same incision. This is the first reported occurrence of such a procedure in Saudi Arabia. Post-operatively, the patient made a successful recovery with excellent kidney function and no complications.

Increasing DIEA Perforator Detail in 3D Photorealistic Volume Rendering Visualizations with Skin-masking and Cinematic Anatomy.

Preoperative CT angiography (CTA) is increasingly performed prior to perforator flap-based reconstruction. However, radiological 2D thin-slices do not allow for intuitive interpretation and translation to intraoperative findings. 3D volume rendering has been used to alleviate the need for mental 2D-to-3D abstraction. Even though volume rendering allows for a much easier understanding of anatomy, it currently has limited utility as the skin obstructs the view of critical structures. Using free, open-source software, we introduce a new skin-masking technique that allows surgeons to easily create a segmentation mask of the skin that can later be used to toggle the skin on and off. Additionally, the mask can be used in other rendering applications. We use Cinematic Anatomy for photorealistic volume rendering and interactive exploration of the CTA with and without skin. We present results from using this technique to investigate perforator anatomy in deep inferior epigastric perforator flaps and demonstrate that the skin-masking workflow is performed in less than 5 minutes. In Cinematic Anatomy, the view onto the abdominal wall and especially onto perforators becomes significantly sharper and more detailed when no longer obstructed by the skin. We perform a virtual, partial muscle dissection to show the intramuscular and submuscular course of the perforators. The skin-masking workflow allows surgeons to improve arterial and perforator detail in volume renderings easily and quickly by removing skin and could alternatively also be performed solely using open-source and free software. The workflow can be easily expanded to other perforator flaps without the need for modification.

An unusual hernia postkidney transplantation led to intermittent ureteric obstruction.

A 53-year-old man underwent a living donor kidney transplantation in the right iliac fossa 25 years prior to presentation. He had been noting an inguinal bugle that became more prominent as the day progressed, and it regressed at night. Upon further investigations, an ultrasound of the allograft revealed moderate-to-severe hydronephrosis. A computed tomography scan revealed herniation of the bladder and part of the transplanted ureter within the supravesical/direct inguinal space. Lichtenstein-like fashion of repair was performed, and the patient continues to enjoy satisfactory graft function with no recurrence. The case illustrates a rare hernia as a late complication of the kidney transplant incision leading to ureteric obstruction and a successful attempt at operative repair.

Enhancing Transplant Awareness and Acceptance Through Targeting Knowledge Gaps and Common Misconceptions.

Introduction Organ transplantation is a critical intervention for patients with end-stage organ failure, but misconceptions and knowledge gaps often hinder organ donation. This study evaluates the acceptability and effectiveness of an organ donation campaign focusing on addressing knowledge gaps and misconceptions in Riyadh, Saudi Arabia. Methods A two-day awareness campaign was conducted in a shopping mall, featuring four stations providing information on various aspects of organ donation. Participants completed a self-administered, researcher-developed, questionnaire before and after the tour. Results Of the 201 participants, 167 completed the questionnaire (83% response rate). The majority (92.9%) reported learning new information and indicated that the knowledge improved their perspective on organ donation. A high percentage (93.5%) felt the campaign answered their questions, with 90.9% deciding to register as organ donors. Conclusion A knowledge-enhancing campaign can effectively improve public perception and promote awareness of organ donation and transplantation. However, the study is limited by its short timeframe, location, and subjective data. Future research should explore the impact of such campaigns on donor registrations and evaluate their effectiveness in different cultural contexts.

SARS-CoV-2 infection in 3,241 School working staffs: Impact of SARS CoV-2 variants of concern [Wild, B.1.1.7 and Omicron].

BACKGROUND: There is debate over whether physical attendance at school affects the spread of the SARS-CoV-2 pandemic. METHODS: A cohort of personnel from several schools in Qatar provided nasopharyngeal swabs (NPS) for SARS-CoV-2 RT-PCR and rapid antigen testing. Each of them was monitored for infection until February 2022. RESULTS: In total, 3,241 employees gave samples for analysis. Prior to the start of the 2020-2021 academic year (Group I), 3.49% of samples tested positive for SARS-CoV-2. Most of the positive PCR results were from male, senior, non-teaching staff members. Only 110 (3.39%) employees who had enrolled in face-to-face instruction before the B.1.1.7 variant's emergence (Group II), 238 (7.34%) after the B.1.1.7 variant's emergence (Group III), and 410 (12.65%) after the introduction of the Omicron variant (Group IV) had reported infection by PCR test. Most people who tested positive by PCR after enrolling in school were young, female teachers. In the Cox Proportional-Hazards Model, exposure to a confirmed case, the presence of symptoms in the two weeks prior to exposure in all groups-young age in Groups II and III, male gender in Groups I and IV, shared housing in Group III, and the presence of comorbidities in Groups II and III independently predicted SARS-CoV-2 infection in school staff. CONCLUSION: Critical information about the risk of SARS-CoV-2 infection in school workers during the whole pandemic is provided by our study. School operations in Qatar were made safer through initial and ongoing screenings, as well as widespread vaccination of school personnel.

Complication Rates in Therapeutic Versus Prophylactic Bilateral Mastectomies: Insights From a National Database.

BACKGROUND: The "Jolie effect" and other media focus on prophylactic treatments have resulted in unilateral breast cancer patients increasingly undergoing contralateral prophylactic mastectomy. Little is known, however, regarding outcomes following therapeutic versus prophylactic mastectomy. In this study, we compared complication rates of unilateral breast cancer patients undergoing contralateral prophylactic mastectomy (BM-TP) to patients undergoing bilateral prophylactic mastectomy (BM-P). METHODS: The BM-TP and BM-P patients from 2015 to 2019 were identified in Optum Clinformatics DataMart. Six-month outcomes were assessed and included wound complications, infection, hematoma/seroma, breast pain, fat necrosis, flap failure, implant failure/removal, other flap/implant complications, and other complications. Multivariable regression models adjusted for age, residence, insurance, race, and Charlson Comorbidity Index score. RESULTS: Of 9319 women, 7114 (76.3%) underwent BM-TP, and 2205 (23.7%) underwent BM-P. In multivariable analysis, BM-TP had higher odds of overall complications (adjusted odds ratio [aOR], 1.35; P < 0.0001), but no difference was observed among patients who had autologous ( P = 0.1448) or no breast reconstruction ( P = 0.1530). Higher odds of overall complications persisted even after controlling for radiation therapy (aOR, 1.25; P = 0.0048) and chemotherapy (aOR, 1.28; P = 0.0047), but not after controlling for lymph node surgery ( P = 0.7765). CONCLUSION: The BM-TP (vs BM-P) patients face higher odds of overall complications but without any difference in certain reconstructive modalities or after controlling for lymph node surgery.

Comparing the Outcomes and Complication Rates of Biologic vs Synthetic Meshes in Implant-Based Breast Reconstruction: A Systematic Review.

OBJECTIVE: This systematic review evaluates all published studies comparing biologic and synthetic meshes in implant-based breast reconstruction (IBBR), to determine which category of mesh produces the most favorable outcomes. SUMMARY BACKGROUND DATA: Breast cancer is the most common cancer in women globally. Implant-based breast reconstruction is currently the most popular method of postmastectomy reconstruction, and recently, the use of surgical mesh in IBBR has become commonplace. Although there is a long-standing belief among surgeons that biologic mesh is superior to synthetic mesh in terms of surgical complications and patient outcomes, few studies exist to support this claim. METHODS: A systematic search of the EMBASE, PubMed, and Cochrane databases was performed in January 2022. Primary literature studies comparing biologic and synthetic meshes within the same experimental framework were included. Study quality and bias were assessed using the validated Methodological Index for Non-Randomized Studies criteria. RESULTS: After duplicate removal, 109 publications were reviewed, with 12 meeting the predetermined inclusion criteria. Outcomes included common surgical complications, histological analysis, interactions with oncologic therapies, quality of life measures, and esthetic outcomes. Across all 12 studies, synthetic meshes were rated as at least equivalent to biologic meshes for every reported outcome. On average, the studies in this review tended to have moderate Methodological Index for Non-Randomized Studies scores. CONCLUSION: This systematic review offers the first comprehensive evaluation of all publications comparing biologic and synthetic meshes in IBBR. The consistent finding that synthetic meshes are at least equivalent to biologic meshes across a range of clinical outcomes offers a compelling argument in favor of prioritizing the use of synthetic meshes in IBBR.

Use of Local Antibiotic Delivery Systems in Tissue Expander and Implant-Based Breast Reconstruction: A Systematic Review of the Literature.

Background: Periprosthetic infections are a debilitating complication of alloplastic breast reconstruction. Local antibiotic delivery for prophylaxis and infection clearance has been used by other surgical specialties but rarely in breast reconstruction. Because local delivery can maintain high antibiotic concentrations with lower toxicity risk, it may be valuable for infection prophylaxis or salvage in breast reconstruction. Methods: A systematic search of the Embase, PubMed, and Cochrane databases was performed in January 2022. Primary literature studies examining local antibiotic delivery systems for either prophylaxis or salvage of periprosthetic infections were included. Study quality and bias were assessed using the validated MINORS criteria. Results: Of 355 publications reviewed, 8 met the predetermined inclusion criteria; 5 papers investigated local antibiotic delivery for salvage, and 3 investigated infection prophylaxis. Implantable antibiotic delivery devices included polymethylmethacrylate, calcium sulfate, and collagen sponges impregnated with antibiotics. Non-implantable antibiotic delivery methods used irrigation with antibiotic solution into the breast pocket. All studies indicated that local antibiotic delivery was either comparable or superior to conventional methods in both the salvage and prophylaxis settings. Conclusions: Despite varied sample sizes and methodologies, all papers endorsed local antibiotic delivery as a safe, effective method of preventing or treating periprosthetic infections in breast reconstruction.

Detecting abnormal seismic activity areas of Anatolian plate and deformation directions using Python Geospatial libraries.

Various inaccurate traditional models have resulted in major ambiguities and gaps in the interpretation of Anatolian plate deformation directions. To address this issue, a GIS-based spatial statistical analysis method was used for the first time to detect the directional distribution of deformation along the Anatolian Plate in Turkey. Two strategies were used in this study: firstly, identifying the abnormally active seismic areas by detecting significant hotspot and cold spot clusters and confirming this detection using optimized hotspot analysis for earthquake events that occurred from 1900 to the end of 2019. Secondly, detecting the directional distribution of deformation using a Standard Deviational Ellipse (SDE) by calculating the standard deviation of the x and y coordinates from the mean center for each set of earthquake events in the Anaconda Python Platform and ArcGIS 10.8 software. Our improved geostatistical analysis results confirmed the existence of abnormal seismic hazard zones within the study area and three deformation directions: the east-west trend, the southeast-northwest trend, and the south-north trend.

Would a 6-Month Wait Time for Patients With Hepatocellular Carcinoma Improve Organ Allocation in Centers With Active Living Related Liver Transplant Activity?

OBJECTIVES: The Model for End-Stage Liver Disease score is used to prioritize patients awaiting liver transplant. Since hepatocellular carcinoma does not affect the score, patients with hepatocellular carcinoma are given exception points to promote fairness. In the United States,this practice has resulted in overcorrection; hence, a 6-month delay to grant exceptions was implemented. A similar flaw may exist in Saudi Arabia. MATERIALS AND METHODS: We retrospectively reviewed data for 214 adults listed for liver transplant from January 2016 to July 2020 at King Abdulaziz Medical City, Riyadh. Data included diagnoses, Model for End-Stage Liver Disease scores, wait times, and outcomes. Comparative analyses were performed to contrast patients with hepatocellular carcinoma versus patients without hepatocellular carcinoma. RESULTS: Mean age was 55.2 ± 11.6 years, and 61% were male patients. Outcomes were that the patient received a transplant(77%; n = 165/214), dropped out (18%; n = 38/214), or remained on the wait (5%; n = 11/214). Of the hepatocellular carcinoma group, 84% (n = 56/68) received transplant versus 74% (n = 108/146) in the control group (P = .11). There was no significant difference in dropout rates (P = .33). Patients with hepatocellular carcinoma constituted 32% (n = 68/214) ofthe waitlist, yetthey received 40% of deceased organ offers (P = .015). Most patients in the hepatocellular carcinoma group received pretransplant bridging therapy for a median of 166 days (101-329.5 days). Median time from listing to transplant was shorter for the control group, 57 days versus 148 days (P < .001). Long-term outcomes were comparable between both groups. CONCLUSIONS: This study suggests that implementation of the 6-month wait time for patients with hepatocellular carcinoma before granting exception points may not be necessary for active living related liver transplant programs. Nevertheless, this remains a sound strategy to follow.

Climate change and human health in the Eastern Mediterranean and Middle East: Literature review, research priorities and policy suggestions.

Human health is linked to climatic factors in complex ways, and climate change can have profound direct and indirect impacts on the health status of any given region. Susceptibility to climate change is modulated by biological, ecological and socio-political factors such as age, gender, geographic location, socio-economic status, occupation, health status and housing conditions, among other. In the Eastern Mediterranean and Middle East (EMME), climatic factors known to affect human health include extreme heat, water shortages and air pollution. Furthermore, the epidemiology of vector-borne diseases (VBDs) and the health consequences of population displacement are also influenced by climate change in this region. To inform future policies for adaptation and mitigation measures, and based on an extensive review of the available knowledge, we recommend several research priorities for the region. These include the generation of more empirical evidence on exposure-response functions involving climate change and specific health outcomes, the development of appropriate methodologies to evaluate the physical and psychological effects of climate change on vulnerable populations, determining how climate change alters the ecological determinants of human health, improving our understanding of the effects of long-term exposure to heat stress and air pollution, and evaluating the interactions between adaptation and mitigation strategies. Because national boundaries do not limit most climate-related factors expected to impact human health, we propose that adaptation/mitigation policies must have a regional scope, and therefore require collaborative efforts among EMME nations. Policy suggestions include a decisive region-wide decarbonisation, the integration of environmentally driven morbidity and mortality data throughout the region, advancing the development and widespread use of affordable technologies for the production and management of drinking water by non-traditional means, the development of comprehensive strategies to improve the health status of displaced populations, and fostering regional networks for monitoring and controlling the spread of infectious diseases and disease vectors.

Graft and Patient Outcomes of Kidney Transplant Tourism: A Single-Center Experience.

Background The supply-demand mismatch between organ donor and patient waiting for transplant has led to the growth of transplant tourism. This type of transplant is considered unethical and illegal, as it is usually performed in poor environments and carries a higher risk of infectious, vascular, and immunological complications. Methods In this single-centered retrospective cohort study, we compared patients who underwent transplant tourism to patients who were transplanted locally and followed up in our hospital from January 2015 to December 2018. Result A total of 254 local transplants and 60 patients from the transplant tourism group were included. Transplant tourism recipients were younger otherwise both groups were similar in gender, body mass index, diabetes, and hypertension. Recipients in the transplant tourism group had a significantly higher rate of delayed graft function (18.3% vs. 6.3%, p 0.005), acute rejection (40% vs. 7.9%, p < 0.001), and higher posttransplant infection in general. With more urological complications and higher graft failure at 3-years' follow-up (11.7% vs. 0.8%, p < 0.001). Conclusion Transplant tourism is associated with a higher risk of infection and poor graft outcomes. Extra efforts are required to cut down transplant tourism by educating patients about its clinical risk and ethical considerations. In addition, measures to increase the number of deceased donor pool to provide a better alternative options for patients are essential.

Complication risks and costs associated with Ponte osteotomies in surgical treatment of adolescent idiopathic scoliosis: insights from a national database.

PURPOSE: Risks of Ponte osteotomies (POs) used for posterior spinal fusion (PSF) for Adolescent Idiopathic Scoliosis (AIS) are challenging to assess because of the rarity of complications. Using a national administrative claims database, we evaluated trends, costs and complications associated with PO used in PSF for AIS patients. METHODS: Using ICD-9/CPT codes, we identified patients (ages 10-18) with AIS who underwent PSF (± PO) between 2007 and 2015 in the IBM® MarketScan® Commercial Databases. Costs and trends of POs were evaluated. Odds of neurological complications and readmissions within 90 days and reoperations within 90 days and 2 years were assessed. RESULTS: We identified 8881 AIS patients who had undergone PSF, of which 8193 had 90-day follow-up and 4248 had 2-year follow-up. Overall, 28.8% had PO. Annual rate of POs increased from 17.3 to 35.2% from 2007 to 2015 (p < 0.001). Risk-adjusted multivariable logistic regression demonstrated no relationship between POs and neurologic complications (p = 0.543). POs were associated with higher odds for readmission (1.52 [1.21-1.91]; p < 0.001) and reoperation (2.03 [1.13-3.59]; p = 0.015) within 90 days, but there were no differences in the odds of reoperation within 2 years (p = 0.836). Median hospital costs were $15,854 (17.4%) higher for patients with POs (p < 0.001) and multivariable modeling demonstrated POs to be an independent predictor of increased costs (p < 0.001). CONCLUSION: Annual rate of POs increased steadily from 2007 to 2015. POs were not associated with increased odds of neurological complications but had higher costs and higher rates of readmissions and reoperations within 90 days. By 2 years, differences in reoperation rate were not significant. LEVEL OF EVIDENCE: III.

Nationwide Trends in Contralateral Prophylactic Mastectomies: An Analysis of 55,060 Unilateral Breast Cancer Patients.

Background: The effects of recent initiatives to better educate unilateral breast cancer (UBC) patients about contralateral prophylactic mastectomy (CPM) have not been fully examined. The purpose of this study was to update and examine recent annual CPM trends by evaluating 2015-2020 data from a large administrative claims database. We also sought to determine if there were any variations in trends among different age groups and reconstructive modalities. Methods: Patients diagnosed with UBC between 2015 and 2019 were identified in Optum Clinformatics DataMart. Patients were then categorized by age group, whether they underwent CPM, whether they underwent breast reconstruction (BR), timing of any BR (immediate or delayed), and type of BR (implant-based or autologous). Results: Of 55,060 patients who were diagnosed with UBC, 2625 (4.8%) underwent CPM. After a slight decline from 2015 to 2016, the CPM rate among UBC patients increased significantly from 3.4% in 2016 to 6.8% in 2019. Although this upward trend remained consistent across all age groups examined, younger UBC patients represented a significantly higher and faster growing percentage of those undergoing CPM. BR rates among those who underwent CPM also increased between 2015 and 2019, with implant-based and immediate BR becoming more heavily favored over autologous and delayed BR. Conclusions: CPM rates continued to rise between 2016 and 2019 and younger women represented a substantially higher and faster growing percentage of UBC patients undergoing CPM than older women. In addition, implant-based and immediate BR are becoming more heavily favored over autologous and delayed BR.

Salvage of an iatrogenic partial allograft nephrectomy during caesarean section-a case report.

Since transplanted kidney allografts are standardly placed in a heterotopic pelvic position, any surgical intervention in the pelvis carries the potential risk for allograft injury. A 41-year-old female G4P2 with history of prior kidney transplants presented for an elective cesarean sections (CS). During the CS, profound bleeding was encountered and was later realized to be from the transplanted kidney allograft. A complete transection of the upper pole with the injury extending to the hilar structures was noted. Careful intraoperative evaluation led to the decision favoring a salvage attempt of the remaining part of the allograft. The patient continues to enjoy sufficient allograft function 6 months after the incident. To conclude, although CS after kidney transplantation is considered safe, the risk of allograft injury remains possible with potentially catastrophic consequences. This case highlights the importance of rapid surgical expertise and appropriate preoperative evaluation, preparation and planning.