Life-threatening perioperative anesthetic complications: major issues surrounding perioperative morbidity and mortality

The incidence and classification of intraoperative adverse events in urological surgery: a systematic review

PURPOSE

To perform a systematic review (SR) to examine the application of classification systems (CS) used to report intraoperative adverse events (iAEs) in urological surgery and to evaluate the crude incidence and type of iAEs.

MATERIALS AND METHODS

This review was published via PROSPERO (CRD42024549954) and conducted following the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA). MEDLINE, Embase, and the Cochrane CENTRAL were searched using a predefined PICO framework: (P) patients with benign and malignant urological diseases, (I) all types of urological surgery, (C) none/any, (O) intraoperative complications classified with grading systems. Retrospective and prospective studies published between January 2019 and June 2024 were included.

RESULTS

The search yielded 1,570 abstracts, 1,043 full-text articles were assessed for eligibility, of which 325 studies reported iAEs (54 used iAE-CS, 64 used Clavien-Dindo Classification and 207 used free-text descriptions). Of the 54 studies (15,298 patients) that used an iAE-CS, the three most used systems were the EAUiaiC (54%), SATAVA (26%), and the modified SATAVA (7%). The overall incidence of iAE was 14% (2,153/15,225 patients). On a study level, the crude incidence of iAE was between 0 and 100% (median 7%, IQR: 3-13%). The misapplication of the Clavien-Dindo system to describe iAEs was high (n = 64 studies).

CONCLUSIONS

The use of iAE-CS is scarce, and there is a lack of universal consensus on a CS to describe iAEs. iAE are poorly reported in urological studies. Urologists should report all perioperative complications to improve transparency and surgical and hospital processes.

Use of Local Anesthesia in Adolescent and Adults Undergoing Cleft Lip Repair or Revision: A Systematic Review

ObjectiveThis study aims to assess the safety and efficacy of solely using local anesthetics for cleft lip repair and/or revision in adolescent and adult patients.DesignSystematic review.SettingClinical studies describing the use of local anesthetics in cleft lip repair procedures.Patients, ParticipantsA literature search was conducted using PubMed, Google Scholar, and Embase following the PRISMA 2020 guidelines. Inclusion criteria were studies focusing exclusively on local anesthetic techniques in adolescent or adult patients undergoing cleft lip procedures. Non-English studies, studies involving patients under the age of 10, or those undergoing cleft palate or other otolaryngological procedures were excluded. Risk of bias was addressed by using a modified Downs and Black checklist.InterventionsReview of local anesthetic use alone for adult and adolescent patients undergoing cleft lip repair or revision.Main OutcomesThe main studied outcomes were any reported general perioperative complications, the necessity of switching to general anesthesia, patients' self-reported pain during the surgery, wound dehiscence, wound infection, and the need for postoperative narcotics for pain control.ResultsThe included studies demonstrated consistent evidence supporting the sole use of local anesthesia for cleft lip repair and revision, with absence of wound dehiscence or infection. Most patients reported minimal to no pain and required no general anesthesia during the procedures.ConclusionsThe current literature supports the safety and efficacy of local anesthesia alone for cleft lip repair and revision procedures. This modality offers a promising approach in resource-limited countries where access to general anesthesia is often limited.

Patient Safety in Anesthesiology: Progress, Challenges, and Prospects

Anesthesiology is considered a complex medical specialty. Its history has been marked by radical advances and profound transformations, owing to technical and pharmacological developments and innovations in the field, enabling us over the years to improve patient outcomes and perform longer, more complex surgical procedures on more fragile patients. However, anesthesiology has never been safe and free of challenges. Despite the advances made, it still faces risks associated with the practice of anesthesia, for both patients and healthcare professionals, and with some of the specific challenges encountered in low and middle-income countries. In this context, certain actions and initiatives must be carried out collaboratively. In addition, recent technologies and innovations such as simulation, genomics, artificial intelligence, and robotics hold promise for further improving patient safety in anesthesiology and overcoming existing challenges, making it possible to offer safer, more effective, and personalized anesthesia. However, this requires rigorous monitoring of ethical aspects and the reliability of the studies to reap the full benefits of the new technology. This literature review presents the evolution of anesthesiology over time, its current challenges, and its promising future. It underlines the importance of the new technologies and the need to pursue efforts and strengthen research in anesthesiology to overcome the persistent challenges and benefit from the advantages of the latest technology to guarantee safe, high-quality anesthesia with universal access.

Mesenchymal Stem Cell-Derived Exosomes as a Treatment Option for Osteoarthritis

Osteoarthritis (OA) is a leading cause of pain and disability worldwide in elderly people. There is a critical need to develop novel therapeutic strategies that can effectively manage pain and disability to improve the quality of life for older people. Mesenchymal stem cells (MSCs) have emerged as a promising cell-based therapy for age-related disorders due to their multilineage differentiation and strong paracrine effects. Notably, MSC-derived exosomes (MSC-Exos) have gained significant attention because they can recapitulate MSCs into therapeutic benefits without causing any associated risks compared with direct cell transplantation. These exosomes help in the transport of bioactive molecules such as proteins, lipids, and nucleic acids, which can influence various cellular processes related to tissue repair, regeneration, and immune regulation. In this review, we have provided an overview of MSC-Exos as a considerable treatment option for osteoarthritis. This review will go over the underlying mechanisms by which MSC-Exos may alleviate the pathological hallmarks of OA, such as cartilage degradation, synovial inflammation, and subchondral bone changes. Furthermore, we have summarized the current preclinical evidence and highlighted promising results from in vitro and in vivo studies, as well as progress in clinical trials using MSC-Exos to treat OA.

Höhere intraoperative Detektionsraten malignitätsverdächtiger nichtpalpabler Läsionen durch Drahtmarkierung bei Patienten mit Hautkrebs

Hintergrund

Kontrollierte Nachsorge bei Patienten nach vollständiger Resektion von Hochrisikotumoren der Haut führt zur Entdeckung von Metastasen in sehr frühen Stadien, allerdings ist die operative Entfernung nicht tastbarer Läsionen häufig problematisch.

Patienten und Methodik

In dieser monozentrischen retrospektiven Studie wurden 39 Patienten mit malignen Hauttumoren mit verdächtigen nicht tastbaren Läsionen in Lymphknoten (90%) oder subkutan/intramuskulär (10%) eingeschlossen. Bei 21 Patienten wurden die Läsionen unter Ultraschallkontrolle exzidiert, 18 Patienten erhielten vor der Operation eine Drahtmarkierung. Die beiden Patientengruppen wurden hinsichtlich des erfolgreichen intraoperativen Auffindens der Läsion, der Dauer des Eingriffs und der Komplikationsrate verglichen.

Ergebnisse

Drahtmarkierung führte zu einer signifikant höheren intraoperativen Detektionsrate von 100% gegenüber 76% (p < 0,05). Die durchschnittlich benötigte Zeit für den gesamten Eingriff (p = 0,91) und die Komplikationsrate (p = 0,70) unterschieden sich nicht signifikant zwischen beiden Gruppen. Die mit Hilfe der Drahtmarkierung erfolgreich entfernten bösartigen Läsionen waren signifikant kleiner (p < 0,05). Von allen 34 operativ entfernten auffälligen Läsionen wurden nur 20 (59%) histologisch als bösartig bestätigt.

Schlussfolgerungen

Die Drahtmarkierung erhöhte die Detektionsrate nicht tastbarer verdächtiger subkutaner, intramuskulärer oder lymphatischer Läsionen. Sie führte zu früherer Diagnose der Metastasierung und auch zur Vermeidung unnötiger vollständiger Lymphknotendissektion.

Higher intraoperative detection rate of suspicious non-palpable lesions using wire marking in skin cancer patients

BACKGROUND

Follow-up protocols in patients after complete resection of high-risk cutaneous tumors lead to a discovery of metastases in very early stages, but surgery on non-palpable lesions proves to be challenging.

PATIENTS AND METHODS

In this monocenter retrospective study 39 patients suffering from malignant skin tumors with suspicious non-palpable lesions located in the lymph nodes (90%) or deep subcutaneously/intramuscularly (10%) were included. In 21 patients the lesions were excised under ultrasound guidance, and 18 patients received a wire marking before surgery. Both patient groups were compared regarding successful intraoperative finding of the lesion, duration of the procedure, and complications.

RESULTS

Wire marking led to a significantly higher intraoperative detection rate of 100% versus 76% (p < 0.05). The average time needed for the complete procedure (p = 0.91) or the rate of complications (p = 0.70) did not differ significantly between both groups. The size of the malignant lesions successfully removed by wire marking was significantly smaller (p < 0.05). Of all 34 detected lesions only 20 (58.8%) were confirmed to be malignant.

CONCLUSIONS

Wire marking increases the detection rate of non-palpable suspicious subcutaneous or lymphatic lesions. It leads to earlier diagnosis of metastasis but also allows to avoid unnecessary complete lymph node dissection.

Anesthetic Choice for Percutaneous Transcatheter Closure of the Left Atrial Appendage: A National Anesthesia Clinical Outcomes Registry Analysis

CONTEXT

Left atrial appendage closure (LAAC) was developed as a novel stroke prevention alternative for patients with atrial fibrillation, particularly for those not suitable for long-term oral anticoagulant therapy. Traditionally, general anesthesia (GA) has been more commonly used primarily due to the necessity of transesophageal echocardiography.

AIMS

Compare trends of monitored anesthesia care (MAC) versus GA for percutaneous transcatheter LAAC with endocardial implant and assess for independent variables associated with primary anesthetic choice.

SETTINGS AND DESIGN

Multi-institutional data collected from across the United States using the National Anesthesia Clinical Outcomes Registry.

MATERIAL AND METHODS

Retrospective data analysis from 2017-2021.

STATISTICAL ANALYSIS USED

Independent-sample t tests or Mann-Whitney U tests were used for continuous variables and Chi-square tests or Fisher's exact test for categorical variables. Multivariate logistic regression was used to assess patient and hospital characteristics.

RESULTS

A total of 19,395 patients underwent the procedure, and 352 patients (1.8%) received MAC. MAC usage trended upward from 2017-2021 (P < 0.0001). MAC patients were more likely to have an American Society of Anesthesiologists (ASA) physical status of≥ 4 (33.6% vs 22.89%) and to have been treated at centers in the South (67.7% vs 44.2%), in rural locations (71% vs 39.5%), and with lower median annual percutaneous transcatheter LAAC volume (102 vs 153 procedures) (all P < 0.0001). In multivariate analysis, patients treated in the West had 85% lower odds of receiving MAC compared to those in the Northeast (AOR: 0.15; 95% CI 0.03-0.80, P = 0.0261).

CONCLUSIONS

While GA is the most common anesthetic technique for percutaneous transcatheter closure of the left atrial appendage, a small, statistically significant increase in MAC occurred from 2017-2021. Anesthetic management for LAAC varies with geographic location.

ChatGPT Provides Satisfactory but Occasionally Inaccurate Answers to Common Patient Hip Arthroscopy Questions

PURPOSE

To assess the ability of ChatGPT to answer common patient questions regarding hip arthroscopy, and to analyze the accuracy and appropriateness of its responses.

METHODS

Ten questions were selected from well-known patient education websites, and ChatGPT (version 3.5) responses to these questions were graded by 2 fellowship-trained hip preservation surgeons. Responses were analyzed, compared with the current literature, and graded from A to D (A being the highest, and D being the lowest) in a grading scale on the basis of the accuracy and completeness of the response. If the grading differed between the 2 surgeons, a consensus was reached. Inter-rater agreement was calculated. The readability of responses was also assessed using the Flesch-Kincaid Reading Ease Score (FRES) and Flesch-Kincaid Grade Level (FKGL).

RESULTS

Responses received the following consensus grades: A (50%, n = 5), B (30%, n = 3), C (10%, n = 1), D (10%, n = 1). Inter-rater agreement on the basis of initial individual grading was 30%. The mean FRES was 28.2 (± 9.2 standard deviation), corresponding to a college graduate level, ranging from 11.7 to 42.5. The mean FKGL was 14.4 (±1.8 standard deviation), ranging from 12.1 to 18, indicating a college student reading level.

CONCLUSIONS

ChatGPT can answer common patient questions regarding hip arthroscopy with satisfactory accuracy graded by 2 high-volume hip arthroscopists; however, incorrect information was identified in more than one instance. Caution must be observed when using ChatGPT for patient education related to hip arthroscopy.

CLINICAL RELEVANCE

Given the increasing number of hip arthroscopies being performed annually, ChatGPT has the potential to aid physicians in educating their patients about this procedure and addressing any questions they may have.

Reducing general anaesthetic episodes: 'piggyback' procedures - Birmingham Children's Hospital experience

Introduction Birmingham Children's Hospital (BCH) has a well-established care pathway for joint procedures - 'piggybacks' - under general anaesthetic (GA). The premise behind these joint procedures is that dental treatment is undertaken at the same time as another planned GA, usually completed by the patient's primary medical or surgical specialty, or another speciality attending a dental GA list.Aim The aim of this paper is to share the recent BCH experience of joint procedures and provide a model for secondary and tertiary care providers across the UK to develop their own collaborative working approaches.Method Data were collected retrospectively from May 2021 to May 2023 on the department of paediatric dentistry at Birmingham Children's Hospital. Patients were included if they had any joint procedure undertaken.Results In total, 93 patients were treated as a 'piggyback' procedure during this period. The average age of patient treated was nine years and three months. A total of 39 patients had extractions only during this period, while 19 had scaling only and 12 had both scaling and extractions. Additionally, 269 primary teeth and 22 permanent teeth were extracted during this period.Conclusion BCH has a well-established pathway of care for 'piggyback' procedures. Future workforce planning and patient care pathways should consider joint procedures and further explore this initiative to continue to streamline patient care and reduce waiting lists and risks associated with GA.

Effects of multimodal low-opioid anesthesia protocol during on-pump coronary artery bypass grafting: a prospective cohort study

BACKGROUND

The most favorable anesthesia protocol during on-pump coronary artery bypass grafting (CABG) in patients with coronary heart disease remains unclear, despite previous publications regarding the interaction between anesthesia protocol and postoperative complications. The aim of the study was to compare the effect of a multimodal low-opioid anesthesia protocol (MLOP) on early postoperative complications during on-pump CABG.

METHODS

A single-center prospective cohort study including 120 patients undergoing on-pump CABG aged 18 to 65 years, divided into two groups according to undergoing MLOP or routine-opioid anesthesia protocol (ROP). The analyzed parameters were plasma IL-6 levels, complications, duration of mechanical ventilation, length of intensive care unit stay, and hospitalization.

RESULTS

In the MLOP group, the levels of IL-6 at the end of the surgery were 25.6% significantly lower compared to the ROP group (33.4 ± 9.4 vs. 44.9 ± 15.9, p < 0.0001), the duration of mechanical ventilation was significantly shorter (2.0 (2.0; 3.0) h vs. 4.0 (3.0; 5.0) h, p < 0.001), the incidence of low cardiac output syndrome was almost two and half times lower (7 (11.7%) vs. 16 (26.7%), p = 0.037), and also the incidence of postoperative atrial fibrillation was significantly lower (9 (15.0%) vs. 19 (31.7%), p = 0.031).

CONCLUSION

Our study confirms that using MLOP was characterized by significantly lower levels of IL-6 at the end of surgery and a lower incidence of low cardiac output syndrome and postoperative atrial fibrillation than ROP.

TRIAL REGISTRATION

The study is registered in clinicaltrials.gov №NCT05514652.

Increasing rates of general anesthesia use in lumpectomy procedures: A 15-year trends analysis

BACKGROUND

Anesthesia methods in oncologic breast surgery have evolved with less invasive practices. The aims of this study were primarily to examine trends in anesthesia type used during lumpectomy.

METHODS

We analyzed lumpectomy procedures from 2005 to 2019 using the NSQIP database. Upon defining the nadir in general anesthesia (GA) and peak in monitored anesthesia care (MAC) use as 2007, we compared patient characteristics and complications in the 2007 versus 2019 GA and MAC cohorts. Multivariable logistic regression was used to examine associations with receipt of GA.

RESULTS

Of 253 545 lumpectomy patients, 191 773 (75.6%) received GA and 61 772 (24.4%) received MAC. From 2005 to 2019, GA rates increased from 66.7% to 82.5%, while MAC rates decreased from 33.3% to 17.5%. More GA patients were obese and American Society of Anesthesiologists class 3. Over time, age and body mass index (BMI) increased in both GA and MAC cohorts. Odds of receiving GA increased over time, and predictors included concurrent axillary lymph node dissection (p < 0.0001) or sentinel lymph node biopsy (p < 0.0001).

CONCLUSIONS

We demonstrate increasing use of GA over time for lumpectomy, which may be related to aging lumpectomy patient population with higher BMIs. We also find a strong association between use of GA and concurrent lymph node procedures.

Completion Lymph Node Dissection for Melanoma Before and After the Multicenter Selective Lymphadenectomy Trial-II in the United States

BACKGROUND

The Multicenter Selective Lymphadenectomy Trial-II (MSLT-II) revealed completion lymph node dissection (CLND) after positive sentinel lymph node biopsy (SLNB) did not improve melanoma-specific survival compared with surveillance. Given these findings and the morbidity associated with CLND, this study investigated trends in rates and predictors of CLND after MSLT-II.

METHODS

Analysis of the National Cancer Database was performed for all patients aged ≥18 years with melanoma and a positive SLNB for 2012-2019. Rates of CLND before and after publication of MSLT-II were identified and logistic regression used to identify factors associated with CLND.

RESULTS

Patients undergoing CLND declined from 55.9% pre-MSLT-II (n = 9725) to 19.5% post-MSLT-II (n = 9419) (odds ratio [OR] 0.32, 95% confidence interval [CI] 0.29-0.35). CLND was less likely in females (OR 0.83; 95% CI 0.78-0.89), older patients (vs. 18-39 yr; 40-64 yr OR 0.80, 95% CI 0.65-0.98; 65-79 yr OR 0.67, 95% CI 0.53-0.84; >80 yr OR 0.38, 95% CI 0.30-0.49), sicker patients (Deyo category ≥2 OR 0.85, 95% CI 0.73-0.99), thinner primary lesions (vs. 0.01-0.79 mm; 1.01-4.00 mm OR 1.16, 95% CI 1.01-1.33; ≥4.01 mm OR 1.31, 95% CI 1.08-1.59), patients from metro areas (Rural OR 1.31, 95% CI 1.00-1.70; Urban OR 1.15, 95% CI 1.03-1.29), and those treated at lower-volume centers (vs. lowest-volume; highest-volume OR 1.31, 95% CI 1.14-1.50; high-volume OR 1.40, 95% CI 1.24-1.57).

CONCLUSIONS

MSLT-II has impacted clinical care; however, male gender, thicker lesions, rural/urban residence, younger age, fewer comorbidities, and treatment at higher-volume centers confer a greater likelihood of undergoing CLND. Further investigations should focus on whether these populations benefit from more aggressive surgical care.

The Intraoperative Complications Assessment and Reporting with Universal Standards (ICARUS) Global Surgical Collaboration Project: Development of Criteria for Reporting Adverse Events During Surgical Procedures and Evaluating Their Impact on the Postoperative Course

BACKGROUND

Intraoperative adverse events (iAEs) are surgical and anesthesiologic complications. Despite the availability of grading criteria, iAEs are infrequently reported in the surgical literature and in cases for which iAEs are reported, these events are described with significant heterogeneity.

OBJECTIVE

To develop Intraoperative Complications Assessment and Reporting with Universal Standards (ICARUS) Global Surgical Collaboration criteria to standardize the assessment, reporting, and grading of iAEs. The ultimate aim is to improve our understanding of the nature and frequency of iAEs and our ability to counsel patients regarding surgical procedures.

DESIGN, SETTING, AND PARTICIPANTS

The present study involved the following steps: (1) collecting criteria for assessing, reporting, and grading of iAEs via a comprehensive umbrella review; (2) collecting additional criteria via a survey of a panel of experienced surgeons (first round of a modified Delphi survey); (3) creating a comprehensive list of reporting criteria; (4) combining criteria acquired in the first two steps; and (5) establishing a consensus on clinical and quality assessment utility as determined in the second round of the Delphi survey.

OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS

Panel inter-rater agreement and consistency were assessed as the overall percentage agreement and Cronbach's α.

RESULTS AND LIMITATIONS

The umbrella review led to nine common criteria for assessing, grading, and reporting iAEs, and review of iAE grading systems led to two additional criteria. In the first Delphi round, 35 surgeons responded and two criteria were added. In the second Delphi round, 13 common criteria met the threshold for final guideline inclusion. All 13 criteria achieved the consensus minimum of 70%, with agreement on the usefulness of the criteria for clinical and quality improvement ranging from 74% to 100%. The mean inter-rater agreement was 89.0% for clinical improvement and 88.6% for quality improvement.

CONCLUSIONS

The ICARUS Global Collaboration criteria might aid in identifying important criteria when reporting iAEs, which will support all those involved in patient care and scientific publishing.

PATIENT SUMMARY

We consulted a panel of experienced surgeons to develop a set of guidelines for academic surgeons to follow when publishing surgical studies. The surgeon panel proposed a list of 13 criteria that may improve global understanding of complications during specific procedures and thus improve the ability to counsel patients on surgical risk.

Microelectromechanical Systems (MEMS) for Biomedical Applications

The significant advancements within the electronics miniaturization field have shifted the scientific interest towards a new class of precision devices, namely microelectromechanical systems (MEMS). Specifically, MEMS refers to microscaled precision devices generally produced through micromachining techniques that combine mechanical and electrical components for fulfilling tasks normally carried out by macroscopic systems. Although their presence is found throughout all the aspects of daily life, recent years have witnessed countless research works involving the application of MEMS within the biomedical field, especially in drug synthesis and delivery, microsurgery, microtherapy, diagnostics and prevention, artificial organs, genome synthesis and sequencing, and cell manipulation and characterization. Their tremendous potential resides in the advantages offered by their reduced size, including ease of integration, lightweight, low power consumption, high resonance frequency, the possibility of integration with electrical or electronic circuits, reduced fabrication costs due to high mass production, and high accuracy, sensitivity, and throughput. In this context, this paper aims to provide an overview of MEMS technology by describing the main materials and fabrication techniques for manufacturing purposes and their most common biomedical applications, which have evolved in the past years.

Anesthesia-related perioperative patient safety services in Indian public and private hospitals with or without teaching programs

Introduction:

The World Health Organization is emphasizing global patient safety for more than a decade. However, very less is known about the patient safety environment in the perioperative settings in developing countries. The present secondary analysis aimed to compare the anesthesia-related patient safety measures and services in Indian public versus private and teaching versus nonteaching hospitals.

Materials and Methods:

The present study is a post hoc, subgroup analysis of a previously conducted cross-sectional, questionnaire-based, online survey during February–May 2019. Responses from the postgraduate trainee and consultant/qualified practitioners were included. Data related to the practice pattern and availability of standard, advanced monitoring, and equipment were then categorized based on the hospital funding source and availability of teaching program; compared using the Fisher's exact test, and P < 0.05 was considered statistically significant.

Results:

Six hundred responses were included. The majority (60.7%) were from the private sector; 57.3% worked in teaching hospitals. Overall, anesthesia-related patient safety and equipment were deficient across the entire range of hospitals. However, there was no difference between matched public and private hospitals (P > 0.05 for most), except the anonymous incident reporting, which was significantly higher in the corporate teaching hospitals (P < 0.0001). Teaching hospitals had significantly better safety measures (P < 0.0001 for most parameters) than nonteaching hospitals.

Conclusion:

Public sector hospitals in India are not having significantly different anesthesia services related to patient safety monitoring and equipment than private sector hospitals. However, the safety measures are relatively low in many aspects across all sectors, which need attention.

The following core competencies are addressed in this article:

Patient care, Systems-based practice.

Airway Complications in Intubated Versus Laryngeal Mask Airway-Managed Dentistry: A Meta-Analysis

OBJECTIVE

Serious airway complications can occur with inadequate airway management during general anesthesia (GA). This meta-analysis investigated randomized controlled trials that compared perioperative technique failures and airway complications, including hypoxia, during GA for dentistry using endotracheal intubation or a laryngeal mask airway (LMA) for airway management.

METHODS

A systematic search of electronic databases and gray literature was completed. Independent reviewers assessed eligibility, performed data extraction, completed risk of bias assessment, and judged the quality of results through Grading of Recommendations, Assessment, Development, and Evaluation. Risk ratios (RRs) for airway complications, with 95% CIs, were calculated. Heterogeneity was quantified using the I2 statistic. Sensitivity and age-subgroup analyses were explored.

RESULTS

Six trials were deemed eligible from a total of 9076 identified reports. The airway management intervention for these trials was LMA. Technique failures or effect differences in airway complications were not detected except for postoperative hypoxia, where LMA use had a decreased risk (RR, 0.22; 95% CI, 0.06-0.77; I2 = 0%; moderate quality). A similar effect was seen in the pediatric analysis (RR, 0.10; 95% CI, 0.01-0.84; I2 = 0%; moderate quality). Additionally, LMA use reduced pediatric sore throat risk (RR, 0.08; 95% CI, 0.04-0.15; I2 = 0%; moderate quality).

CONCLUSION

Use of an LMA in dentistry may have the potential to reduce the risk of postoperative hypoxia, particularly in pediatric patients, although further study is required.

Self-Identified Patient Barriers to Pursuit of Cochlear Implantation

INTRODUCTION

Cochlear implantation (CI) is an underutilized treatment for hearing loss in the United States for reasons which remain unclear. This study explores self-identified barriers to CI employing a survey of adults who qualified for CI.

METHODS

A single-institutional review of CI candidates between December 2010 and December 2018 was performed to identify patients who did not pursue surgery. A 21-question survey was developed, aimed at rating patients' concerns regarding CI, including surgical risks, adaptation, costs, time commitment, loss of residual hearing, and lack of benefit, among others. Current hearing aid usage and familiarity with other CI users were also analyzed. The survey was administered to patients who did not pursue CI and a control group who eventually did pursue CI, via email or telephone.

RESULTS

There were 199 patients who initially did not pursue CI. Fifty-two survey responses were received, comprised of 27 patients who did not pursue CI and 25 patients who did. A belief that CI would not significantly improve the ability to communicate was the most common reported barrier, followed by the postoperative recovery process, risks of surgery, and risks of losing music appreciation. Anesthetic risk and cost were the least important reasons not to pursue CI. Half of patients reported concerns regarding the period of adjustment with the CI.

CONCLUSION

The decision not to pursue CI despite eligibility is multifactorial and includes concern for minimal hearing benefit and perioperative risks. These factors should be taken into consideration when counseling patients on CI surgery.

Developmental features and predicting airway failure risk in critically ill children with mandibular hypoplasia using 3D computational tomographic analysis

In children with mandibular hypoplasia, airway management is challenging. However, detailed cephalometric assessment data for this population are sparse. The aim of this study was to find risk factors for predicting difficult airways in children with mandibular hypoplasia, and compare upper airway anatomical differences using three-dimensional computed tomography (3D CT) between children with mandibular hypoplasia and demographically matched healthy controls. There were significant discrepancies in relative tongue position (P < 0.01) and anterior distance of the hyoid bone (P < 0.01) between patients with mandibular hypoplasia and healthy controls. All mandibular measures were significantly different between the two groups, except for the height of the ramus of the mandible. After adjusting for age and sex, the anterior distance of hyoid bone and inferior pogonial angle were significantly associated with a difficult airway (P = 0.01 and P = 0.02). Quantitative analysis of upper airway structures revealed significant discrepancies, including relative tongue position, hyoid distance, and mandible measures between patients with mandibular hypoplasia and healthy controls. The anterior distance of the hyoid bone and inferior pogonial angle may be risk factors for a difficult airway in patients with mandibular hypoplasia.

General anaesthesia related mortality in a limited resource settings region: a retrospective study in two teaching hospitals of Butembo

Background

General anaesthesia (GA) in developing countries is still a high-risk practice, especially in Africa, accompanied with high morbidity and mortality. No study has yet been conducted in Butembo in the Democratic Republic of the Congo to determine the mortality related to GA practice. The main objective of this study was to assess mortality related to GA in Butembo.

Methods

This was a retrospective descriptive and analytic study of patients who underwent surgery under GA in the 2 main teaching hospitals of Butembo from January 2011 to December 2015. Data were collected from patients files, anaesthesia registries and were analysed with SPSS 26.

Results

From a total of 921 patients, 539 (58.5%) were male and 382 (41.5%) female patients. A total of 83 (9.0%) patients died representing an overall perioperative mortality rate of 90 per 1000. Out of the 83 deaths, 38 occurred within 24 h representing GA related mortality of 41 per 1000. There was a global drop in mortality from 2011 to 2015. The risk factors of death were: being a neonate or a senior adult, emergency operation, ASA physical status > 2 and a single deranged vital sign preoperatively, presenting any complication during GA, anaesthesia duration > 120 minutes as well as visceral surgeries/laparotomies. Ketamine was the most employed anaesthetic.

Conclusion

GA related mortality is very high in Butembo. Improved GA services and outcomes can be obtained by training more anaesthesia providers, proper patients monitoring, improved infrastructure, better equipment and drugs procurement and considering regional anaesthesia whenever possible.

Wide-awake local anesthesia for clavicle fracture fixation: A case report

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Clavicular fracture was treated with plate osteosynthesis using the WALANT technique.

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Adequate pain control and minimal bleeding were observed during the surgery.

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WALANT technique can be used in cases with unsuitability of general anesthesia.

Introduction

The wide-awake local anesthesia no tourniquet (WALANT) technique has been used in many orthopedic surgeries. The benefits of this technique are the avoidance of the adverse effects of general anesthesia (GA) and the overall reduction of the cost of surgery. However, a literature search revealed no published report on performing the WALANT technique for clavicular fracture surgery.

Presentation of case

We report a case of mid-shaft clavicular fracture that was treated with plate osteosynthesis using the WALANT technique in a patient with uncontrolled atrial fibrillation. During the operation, the patient did not experience any pain, and the procedure could be performed easily due to minimal bleeding in the operative field. The operation was completed successfully without any complications, and the patient was discharged from the hospital the day after surgery. Follow-up radiographs after three months showed union of the clavicle at the fracture site, and the patient could use his arm normally.

Discussion

Clavicular fracture is routinely treated with plate osteosynthesis under general anesthesia. In some patients with high morbidity and other risk factors for whom GA is unsuitable, the WALANT technique can prove to be an effective alternative.

Conclusion

Clavicular fixation can be performed successfully and without any complication under WALANT technique.

Endotracheal intubation in patients undergoing open abdominal surgery in the lateral position: a comparison between the intubating video stylet and fiberoptic intubating bronchoscopy

BACKGROUND

Some situations compel anesthetists to execute endotracheal intubation in the lateral position. We compared elective endotracheal intubation in the lateral decubitus position using the video stylet (VS) device with the fiberoptic (FO) bronchoscope device in patients undergoing abdominal surgery.

METHODS

Overall, 50 patients were enrolled in this prospective, randomized study. They were randomly classified into the VS intubation or FO intubating bronchoscope group. After anesthesia induction, patients were placed in the lateral decubitus position, and a single investigator well-versed with the use of the VS and FO bronchoscope performed the intubation. The primary outcome was the time taken for intubation. Secondary outcomes included the intubation success rate, hemodynamic response at specific time points and perioperative complications.

RESULTS

The average time taken for intubation was significantly lesser in the VS group than in the FO group, with values of 39.5 ± 10.0 and 75.6 ± 16.2 s, respectively (P < 0.001). Incidences of a successful first attempt of intubation in the VS and FO groups were 88% and 100%, respectively, showing no significant difference. There was a negligible difference in complications between the groups, except sore throat, which showed a higher incidence in the VS group than in the FO group (P = 0.002).

CONCLUSIONS

In laterally positioned patients, elective endotracheal intubation with VS provides less intubation time; however, its use is accompanied by a significant increase in the hemodynamic response after intubation and an increased incidence of sore throat.

Smart Glasses for Anesthesia Care: Initial Focus Group Interviews with Specialized Health Care Professionals

PURPOSE

Smart glasses are a kind of wearable technology that gives users sustained, hands-free access to data and can transmit and receive information wirelessly. Earlier studies have suggested that smart glasses have the potential to improve patient safety in anesthesia care. Research regarding health care professionals' views of the potential use of smart glasses in anesthesia care is limited. The purpose of this study was to describe anesthesia health care professionals' views of smart glasses before clinical use.

DESIGN

A qualitative descriptive study.

METHODS

Data were collected from focus group interviews and analyzed using thematic content analysis.

FINDINGS

Three categories of participants' views of smart glasses were created during the analysis: views of integrating smart glasses in clinical setting; views of customized functionality of smart glasses; and views of being a user of smart glasses. One theme, striving for situational control, was identified in the analysis.

CONCLUSIONS

Smart glasses were seen as a tool that can impact and improve access to patient-related information, and aid health care professionals in their struggle to gain situational control during anesthesia care. These are factors related to increased patient safety.

DYNAMICS OF STRESS LABORATORY FINDINGS AND THEIR RELATION TO PSYCHOEMOTIONAL STATE DURING REGIONAL ANESTHESIA IN PATIENTS WITH LOWER LIMBS INJURIES

The choice of an adequate method of anesthesia for surgical treatment of lower limbs injuries remains a critical task today. Each method applied in this treatment has its advantages and disadvantages. In recent years, regional anesthesia has been the preferential method. The aim of the study. To study the stress laboratory findings and their relation to the patients’ psychoemotional state in perioperative period while performing regional and combined anesthesia. Material and methods. It was studied 60 patients aged 18-59 years, who underwent metal osteosynthesis operations due to lower limbs injuries. Surgical treatment was performed under regional anesthesia and regional anesthesia followed by sedation. The patients of both groups were conducted heamodynamics monitoring and determined the intensity of pain in accordance with visual analogue scale and stress indicators with a laboratory method. The psychoemotional state was assessed with the Spielberger-Hanin anxiety scale. Results. According to the study it was determined, that in patients, who were planned to have surgery, significant psychoemotional stress and stress concentration of hormones in the blood and their interrelation was discovered. Patients about before surgery had a relationship between situational anxiety and cortisol r=0.7; p=0.00006 in group I; r=0.6; p=0.002 in the second group. The relationship between VAS and cortisol r=0.5; p=0.04 in groups I and II. After surgery, the connection was in group I patients between situational anxiety and cortisol r=0.4; p=0.02; the relationship between insulin and the HOMA index r=0.5; p=0.01. Conclusions. Before the operation, all patients revealed significant psychoemotional stress and stressful changes in the concentration of hormones in the blood. Reliably pronounced dynamics of the indicators was with the use of combined conduction anaesthesia. Thus, the performed study allows to recommend combined regional anesthesia as the method of anesthesia choice, particularly in patients with high anxiety.

Adverse events in anesthesiology: analysis based on the Logbook tool used by specializing physicians in Brazil

Logbook is a digital tool launched by the Brazilian Society of Anesthesiology in 2014 and has since been used. This tool allows physicians specializing in anesthesiology to record and store activities performed during the training period. This enabled a descriptive analysis of an extensive database of anesthetic procedures, as well as complications that occurred and were reported by these doctors. The present study includes the review of these data over a period of 2 years (2014–2015).

Comparison of the clinical efficacy of sonography-guided percutaneous nephrolithotomy (PCNL) under local and general anesthesia

Objective

This study aimed to compare the effect of percutaneous nephrolithotomy (PCNL) under local infiltration anesthesia (PCNL-LIA) and general anesthesia (PCNL-GA) to treat upper urinary tract calculi on clinical application values.

Methods

Patients were randomly divided into the PCNL-LIA (16 patients) and PCNL-GA (20 patients) groups. Data on safety, cost, complications, rate of residual calculi, and prognosis were compared.

Results

The mean operation time in the PCNL-LIA group was less than that in PCNL-GA group (100±7.7 versus 120±9.0 minutes). The mean length of hospital stay in the PCNL-LIA group was shorter than that in the PCNL-GA group (6.9±0.5 versus 10.5±1.2 days). The rate of patients who required blood transfusion because of blood loss during or after surgery was less in the PCNL-LIN group than in the PCNL-GA group (13% versus 40%). The intervention rate in the PCNL-GA group was higher than that in the PCNL-LIA group. Visual analogue pain scale assessment showed that the PCNL-LIA group showed slightly more pain than the PCNL-GA group.

Conclusion

PCNL-LIA is safer, faster, and more convenient, and it also provides the benefits of a lower rate of blood loss and complications, lower cost, faster recovery, and shorter hospital stay compared with PCNL-GA.

Preoxygenation in difficult airway management: high-flow oxygenation by nasal cannula versus face mask (the PREOPTIDAM study). Protocol for a single-centre randomised study

INTRODUCTION

Although preoxygenation and airway management respond to precise algorithms, difficult intubation (DI) remains a daily challenge in intensive care units and in the operating rooms because of its frequent complications, including hypoxaemia. To prevent desaturation during DI, high-flow oxygenation by nasal cannula (HFNC) could prove beneficial. Indeed, contrary to standard preoxygenation device, it can be held in place throughout the intubation trying to perform apnoeic oxygenation during DI. Hence, recent guidelines recommend HFNC during DI, but its relevance has never been evaluated in this setting in a large randomised study until now.

METHODS AND ANALYSIS

The PREOPTIDAM trial is a prospective, single-centre, randomised, controlled study in Nantes University Hospital. In anticipated DI, we hypothesised that HFNC can decrease the incidence of desaturation ≤94% or face mask ventilation from 16% to 4% compared with standard device. Using a two-sided t-test with a first species risk of 5% and 80% power, a total of 186 patients will be included. Using a computer-generated randomisation, with a 1:1 allocation ratio, patients will be randomised to HFNC or face mask preoxygenation. Randomisation will be stratified on intubation sequence: Rapid sequence intubation or awake fibreoptic intubation. The primary objective is to determine whether HFNC is more efficient than standard oxygenation techniques to prevent desaturation ≤94% or face mask ventilation during DI. Intent-to-treat and per-protocol analysis are planned for the primary outcome.

ETHICS AND DISSEMINATION

The study project has been approved by an independent ethics committee. Written informed consent will be obtained before study inclusion. Participant recruitment begins in September 2018. Results will be submitted to international peer-reviewed medical journals.

TRIAL REGISTRATION NUMBER

NCT03604120.

Anesthesia-Associated Relative Hypovolemia: Mechanisms, Monitoring, and Treatment Considerations

Although the utility and benefits of anesthesia and analgesia are irrefutable, their practice is not void of risks. Almost all drugs that produce anesthesia endanger cardiovascular stability by producing dose-dependent impairment of cardiac function, vascular reactivity, and compensatory autoregulatory responses. Whereas anesthesia-related depression of cardiac performance and arterial vasodilation are well recognized adverse effects contributing to anesthetic risk, far less emphasis has been placed on effects impacting venous physiology and venous return. The venous circulation, containing about 65–70% of the total blood volume, is a pivotal contributor to stroke volume and cardiac output. Vasodilation, particularly venodilation, is the primary cause of relative hypovolemia produced by anesthetic drugs and is often associated with increased venous compliance, decreased venous return, and reduced response to vasoactive substances. Depending on factors such as patient status and monitoring, a state of relative hypovolemia may remain clinically undetected, with impending consequences owing to impaired oxygen delivery and tissue perfusion. Concurrent processes related to comorbidities, hypothermia, inflammation, trauma, sepsis, or other causes of hemodynamic or metabolic compromise, may further exacerbate the condition. Despite scientific and technological advances, clinical monitoring and treatment of relative hypovolemia still pose relevant challenges to the anesthesiologist. This short perspective seeks to define relative hypovolemia, describe the venous system’s role in supporting normal cardiovascular function, characterize effects of anesthetic drugs on venous physiology, and address current considerations and challenges for monitoring and treatment of relative hypovolemia, with focus on insights for future therapies.