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Purpose: The aim of this study was to evaluate how prevalent asymptomatic SARS-CoV-2 virus infection (COVID-19) is among patients undergoing ophthalmic surgery at two tertiary referral hospitals. Material(s) and Method(s): This retrospective study included patients without COVID-19 symptoms who underwent preoperative screening using reverse transcription-polymerase chain reaction (RT-PCR) before ophthalmic surgery at the Kocaeli University and Gaziantep University departments of ophthalmology [between September 1, 2020, and December 15, 2020 (group 1);between March 1, 2021, and May 30, 2021 (group 2)]. Patients scheduled for surgery and followed up in the retina, glaucoma, pediatric ophthalmology and strabismus, cataract and refractive surgery, and cornea departments were examined. Result(s): RT-PCR was positive for SARS-CoV-2 in 12 (1.4%) of 840 patients in group 1 and 7 (1.1%) out of 600 patients in group 2. None of the patients were symptomatic of COVID-19. The majority of the patients were scheduled for retina or cataract and refractive surgery in both groups (group 1;retina: 29.2%, cataract and refractive: 57.0%, group-2;retina: 31.3%, cataract and refractive: 54.5%). SARS-CoV-2 RT-PCR testing was positive for seven patients in group 1 (7/245, 2.9%) and five patients in group 2 (5/188, 2.6%) who were scheduled for retinal surgery. Conclusion(s): The necessity, availability, and practicality of COVID-19 RT-PCR testing prior to ophthalmic surgeries varies depending on the protocols of each institution. COVID-19 RT-PCR testing is suggested especially before vitreoretinal surgeries and general anesthesia procedures, because of the difficulty in managing postoperative complications.Copyright © 2023 Gazi Eye Foundation. All rights reserved.
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The most common causes of acute hepatitis in children are hepatitis A and autoimmune hepatitis. Hepatitis in the course of Wilson's disease is sporadically registered in adolescents. An increase of activity of aminotransferases both in the course of multisystem inflammatory syndrome in children (MIS-C) and in the course of COVID-19 has been observed. Hepatitis is common in children with MIS-C and is associated with a more severe presentation and persistent elevation of liver function tests. To date, no cases of acute hepatitis in children due to COVID-19 have been reported. We present 2 cases of acute hepatitis in children where the only cause seems to be a previous asymptomatic SARS-CoV-2 infection.Copyright © 2023 Termedia Publishing House Ltd.. All rights reserved.
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Introduction: One of the consequences of COVID-19 is the incidence of mucormycosis in the jaws and subsequent osteomyelitis in patients with undiagnosed or uncontrolled comorbidities, such as diabetes mellitus and associated immunosuppression. Case Report: A 52-year-old male patient with a history of COVID-19 two months ago presented a painful ulcerative lesion of insidious onset in the palatal raphe measuring approximately 2 mm. He referred to numbness of the palatal region of one month of evolution. During the physical examination, purulent content, multiple pustules in the anterior maxillary buccal mucosa, and mobility of upper anterior teeth were observed. The CT revealed isodense bilateral images in maxillary and ethmoidal sinuses, bone sequestrations, and partial loss of anterior vestibular cortical bone. Laboratory tests revealed no abnormality, except for HbH1c: 10.2gr/dl. The patient was hospitalized for control of newly diagnosed diabetes mellitus. Maxillary incisional biopsy was performed, and microscopic analysis showed a mixed inflammatory infiltrate, fibrin deposits with eosinophilic and birefringent ribbon-like hyphae, branched at right angles, compatible with maxillary osteomyelitis secondary to mucormycosis. The treatment started with antifungal and intravenous antibiotics, followed by surgical cleaning under general anesthesia. The patient progressed favorably. Conclusion(s): Immunosuppression resulting from COVID-19 and/or uncontrolled systemic diseases can condition the appearance of rare opportunistic microorganisms causing infections such as mucormycosis. Early diagnosis and treatment make a difference in the morbidity and mortality of patients.
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This study was performed to present a single operator's experience of in-office (outside of a hospital setting) outpatient orthognathic surgery over a period of 12 years. A total of 254 surgeries were performed during this period. Average procedure times were comparable with published results from studies of similar material. The mean operating time for bimaxillary surgery (n = 21) was 3 hours and 11 minutes. Regarding single-jaw procedures, the mean operating time for Le Fort I osteotomy (n = 115) was 2 hours and 14 minutes and for bilateral sagittal split osteotomy (n = 118) was 2 hours and 1 minute. All patients were discharged from the office the same day, except one patient who was transported to the hospital after surgery due to an anaesthetic complication. This patient was discharged from the hospital later the same day. In this setting, outpatient orthognathic surgery is both safe and practical when careful attention is given to patient preparation and selection. Emergency phone contact with the surgeon in case of complications is important to avoid unnecessary hospitalization.
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Background: Many EP procedures are moving from the hospital to the ambulatory surgery center (ASC) outpatient setting. The COVID-19 pandemic and the CMS Hospitals Without Walls (HWW) program has been an impetus in accelerating this transition. Anesthesia provider perioperative management is critical in facilitating safe procedures with rapid, same-day discharge. Our EP-dedicated 2-OR ASC completed more than 3,000 procedures and more than 500 left-sided ablations utilizing general anesthesia with endotracheal intubation with same-day discharge. To our knowledge, this experience is unique within an ASC setting in both volume and complexity. Objective(s): We present our comprehensive anesthesia strategy and lessons learned to facilitate safe, efficient procedures and discharge in an EP ASC. Method(s): A nurse anesthesiologist with more than a decade of EP-dedicated experience developed and taught a perioperative anesthesia strategy to facilitate high volume, safe and quick discharge care. Fundamental to this is the avoidance of opioids and benzodiazepines whenever possible. Propofol or general anesthesia with sevoflurane and complete reversal with sugammadex allow for quick recovery. Mandatory video laryngoscope utilization minimizes airway trauma, while liberal antiemetic use eliminates most nausea. All femoral access is device closed. Positive inotropes are used liberally during anesthetic to avoid heart failure. The goal is to deliver all patients to PACU on room air with stable hemodynamics. Anesthesia providers manage the preop and recovery area. Result(s): More than 90% of all patients undergoing general anesthesia and heparinization for left-atrial ablation were discharged home in under 3 hours. Nearly all procedures not requiring femoral access were discharged within 30-60 minutes. High procedure volumes with efficiencies far exceeding our in-hospital experience were thus facilitated with improved patient safety. Since HWW began, five patients have required transfer to the hospital without any deaths. All others were discharged same day. Conclusion(s): We suggest that a dedicated anesthesia team with a tailored perioperative anesthesia plan facilitates performing nearly all EP-related surgical procedures in an ASC. This success is facilitated by appropriate patient selection, preoperative evaluation, intraoperative care prioritizing quick return to baseline, and end-to-end anesthesia perioperative management. We believe this type of anesthesia management is critical to the transition of EP procedures to ASCs.Copyright © 2023
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Background: Surgical resection remains the mainstay for early breast cancer. However, older patients with multiple co-morbidities may be deemed unsafe for general anaesthesia (GA). The Covid-19 pandemic necessitated some such surgery under local anaesthesia (LA) especially those who lacked anti-hormonal bridging therapy option. We present a retrospective study comparing outcomes following breast conserving surgery (BCS) under LA and GA. Method(s): 31 patients under LA (April 2018-March 2022) were compared with 31 age-matched patients under GA during the same period. Main outcomes were length of hospital stay and rates of margin positivity, re-operation, and post-operative complications within 1 month (including wound infections, seromas needing >=3 aspirations). Statistical analysis (with R-4.2.2) used two-tailed test with significant p-value (<0.05). Result(s): Only 5 LA cases were performed in the 2 years prior to first UK Covid-19 lockdown (March 2020), whilst 26 cases were performed in the 2 years after. [Formula presented] Conclusion(s): The number of BCS cases under LA increased five-fold following Covid-19 pandemic. Outcomes under LA were no worse than under GA. BCS under LA can allow BCS in patients unfit for or unwilling to have GA, especially older patients. Dedicated lists for BCS under LA may reduce need for resources such as hospital beds and overnight stays in the current resource and financially constrained health-care system.Copyright © 2023
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Background: Hospitals are one of the primary resources for disease transmission, so many guidelines were published, and neuro-surgeons were advised to postpone elective spine surgeries during the COVID-19 pandemic. Objective(s): To avoid pulmonary complications and reduce the risk of spreading the virus and contracting the disease during the COVID-19 era, we operated a group of our patients under spinal anesthesia rather than general anesthesia. Method(s): We retrospectively analyzed all patients who underwent discectomy surgery for lumbar spinal disc herniation under SA between September 2020 and 2021. Result(s): Sixty-four patients diagnosed with lumbar disc herniation underwent lumbar discectomy with SA. All patients except three were male. The mean age was 44.52 +/- 7.95 years (28 to 64 years). The mean procedure time for SA was 10 minutes. The duration of the surgery was 40 to 90 minutes per each level of disc herniation. The mean blood loss was 350 cc (200 to 600 cc). The most common involved level was L4/L5 intervertebral disc (n = 40 patients;63.5%). The mean recovery time was 20 minutes. Only three patients requested more analgesics for relief of their pain postoperatively. All patients with discectomy were discharged a day after surgery, and in the case of fusion, two days after surgery. All the patients were followed up for six months, showing no recurrence symptoms, good pain relief, satisfaction with the surgery, and no bad memory of the surgery. Conclusion(s): Spinal anesthesia is a good alternative or even the main anesthesia route for patients with lumbar disc herniation. More studies are needed to elucidate the best candidate for SA in patients with lumbar pathology.Copyright © 2023, Author(s).
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By 2022, publishing has already returned to the standard. This means that the global SARS-CoV-2 pandemic for anaesthesiologists is all but forgotten, and the safety of anesthesia is again the dominant issue. However, in addition to the traditional search for answers to whether we should prefer regional or general anesthesia and for which procedures and what is the best prevention of PONV, there is now another associated topic - postoperative delirium and postoperative cognitive dysfunction. Although both entities are crucial to the overall perioperative course, they still need more attention. This is even though, especially in elderly patients, they have already been shown to significantly affect perioperative morbidity and mortality. Moreover, to the surprise of many, recent data show that their incidence is not so much dependent on the type of anesthesia but on the quality of its administration. This text aims to briefly summarize some key publications in the field of anesthesiology and to highlight papers that should not escape attention.Copyright © 2022, Czech Medical Association J.E. Purkyne. All rights reserved.
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Aim: There are data showing that the use of minimally invasive anesthesia methods (local anesthesia, nerve blocks) as an alternative to traditional anesthesia methods used in inguinal hernia repair surgery is safe and effective. During the COVID-19 pandemic, which affected the whole world, we aimed to evaluate the use of minimally invasive anesthesia methods in patients with inguinal bladder hernia, as well as their perioperative and postoperative results in our pilot study.Material and Methods: We evaluated the perioperative and postoperative data of five patients with inguinal bladder hernia, who underwent surgery with local anesthesia and ilioinguinal/iliohypogastric nerve blockade, four of which were performed during the COVID-19 pandemic.Results: It is possible to perform inguinal bladder hernia surgery with local anesthesia and ilioinguinal/iliohypogastric nerve block, including in secondary cases. Better hemodynamic stabilization in the intraoperative period reduces the need for narcotic analgesics by providing effective analgesia in the postoperative period, as well as reducing the risk of contamination in airway control.Discussions: Performing inguinal bladder hernia surgery using local anesthesia and ilioinguinal/iliohypogastric nerve block provides reliable and effective analgesia during the perioperative and postoperative periods.
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Introduction: Aim of the study was to analyse the structure of patients referred for dental treatment in general anaesthesia (GA) and to analyse the triage outcomes. Material(s) and Method(s): Retrospective chart analysis of patients referred between January 1st 2018 and July 7th 2022 was performed. Following data were registered: age, sex, diagnosis/ reason for referral for GA, indication for dental treatment in GA, trisage outcome and waiting time for the GA procedure. Result(s): Charts of 193 referred in the aforementioned period were analysed. Most common reason for the referral was autism (65/33.7%), cerebral paralysis (29/15%) and mental retardation (27/14%). Indication for dental treatment in GA was found in 156(80.8%) patients while in 37(19.2%) patients no indication for dental treatment in GA was found. Out of the 156 patients who were indicated for dental treatment in GA, 98(62.8%) patients were managed through day-care surgery and 8(5.2%) patients were admitted to hospital. Twenty patients (12.8%) were still waiting for their GA appointment in the time of analysis, 29(18.6%) were lost to follow up and in one (0.6%) patient the anaesthesiologist recommended ambulatory treatment due to increased risk. Out of the 37 patients in whom no indication for the treatment in GA was found, 13(35.2%) had no caries, 16/ (43.2%) were referred to paediatric dentist and 8(21.6%) were managed on the initial exam. Median time of waiting for the procedure was 120(10-365) days. Before the COVID- 19 pandemics median waiting time was 90(15-300) days, and after the COVID-19 pandemics median waiting time was 135(10-365) days. Conclusion(s): In the majority of the patients referred for dental treatment in GA, indication for the procedure was established. Majority of the referred patients can be managed through a day-care surgery. COVID-19 pandemics is probably one of the reasons for the increased GA procedure waiting time.
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Background: Covid 19 is a global epidemic. One of the most important steps in the fight against this epidemic is vaccination. mRNA vaccines are used in vaccination in our country. Among the additives in the vaccine, the substance with the highest allergenic risk is polyethylene glucose (PEG). There are different molecular weights of PEG. Another additive that has a high risk of cross-reaction with PEG as an additive is POLISORBAT 80. Skin tests with drugs containing PEG and POLISORBAT 80 and, if available, tests with vaccines are instructive. Among the drugs containing PEG: Moxifloxacin tablet, ciprofloxacin tablet, Amoxicillin clavulanic acid tablet;Medicines containing polysorbate include: Omalizumab vaccine, Mepolizumab vaccine. The results of the skin test with PEG-containing methylprednisolone (DEPO-MEDROL) and POLYSORBAT-containing triamcinolone (KENACORT-A) in order to be evaluated in terms of vaccine in our 2 patients who had multiple drug sensitivities before were shared. Method(s): Case 1: 33 y, F *There are diagnoses of urticaria and angioedema. Urticaria 30 minutes after taking aspirin, levofloxacin, cefdinir tablet;5 minutes after taking ciprofloxacin tablets, he has anaphylaxis. *Applies before Biontec vaccine. *The patient had a history of anaphylaxis with PEG-containing ciprofloxacin. In the skin tests performed with DEPO-MEDROL and KENACORT-A, 1/100 intradermal test was positive. *The patient for whom Biontec vaccine was not recommended received Synovac vaccine without any problems. Case 2: 52 years, F * He has a diagnosis of urticaria. 5 minutes after general anesthesia and local anesthesia;The patient who had cardiac arrest 3 times was evaluated. The patient, who had Synovac for 2 times without any problems, wanted to have the 3rd dose of Biontec vaccine. *Tested with general -local anesthetic agents. *Ciprofloxacin skin tests are negative;Urticaria plaques developed after 30 minutes of 1/4 tb in oral provocation. In the skin tests performed with DEPO-MEDROL and KENACORT-A, 1/100 intradermal test was positive. *Biontec vaccine is not recommended. Result(s): A safer vaccination is ensured by testing with additives in Covid 19 vaccines. Conclusion(s): Drug additives should also be kept in mind in patients with multiple drug allergies.
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This is a case report of a 74-year-old woman with catatonic schizophrenia who was treated with transcranial Direct Current Stimulation (tDCS) in place of electroconvulsive therapy (ECT) during the Covid-19 pandemic that impacted access to ECT facilities. In 2021, the exceptional number of patients infected with SARS-Cov-2 led the French public hospital system to adjust its organization, temporarily redirecting anesthetists from ECT departments to ICUs. Our patient, who was hospitalized via the emergency department, presented schizophrenia with catatonic features. Due to the pandemic, ECT, which is considered the gold standard treatment for this condition, was not available. Therefore, tDCS, a neuromodulation technique that doesn't require general anesthesia, was recommended for this patient, and was delivered at the relatively (compared to standard protocols) accelerated rate of five sessions a day, five days a week. This protocol was chosen as accelerated rTMS had been shown to be effective against depression in recent trials (Cole et al. 2021), and one study had also reported this exact protocol as effective and harmless for a patient with schizophrenia (Mondino et al. 2021). The Bush-Francis Catatonia Rating Scale (BFCRS) was used to evaluate the severity of the catatonia. After 49 sessions, the clinical response was meaningful, with a BFCRS score of 16, compared to 36 at baseline. We then moved to five sessions a day, three days a week, and then two days a week. After 80 sessions, we noted the complete disappearance of catatonia (BFCRS = 6). This case provides evidence for the feasibility and tolerability of accelerated tDCS for patients with catatonia. Accelerated tDCS represents a potential alternative to ECT in the treatment of catatonia, and needs further randomized clinical studies to confirm its efficacy. Research Category and Technology and Methods Clinical Research: 9. Transcranial Direct Current Stimulation (tDCS) Keywords: tdcs, catatonia, covid-19, ECTCopyright © 2023
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STUDY OBJECTIVE: Dynamic arterial elastance (Eadyn) has been suggested as a functional measure of arterial load. We aimed to evaluate whether pre-induction Eadyn can predict post-induction hypotension. DESIGN: Prospective observational study. PATIENTS: Adult patients undergoing general anesthesia with invasive and non-invasive arterial pressure monitoring systems. MEASUREMENTS: We collected invasive and non-invasive Eadyns (n = 38 in each), respectively. In both invasive and non-invasive Eadyns, pre-induction Eadyns were obtained during one-minute tidal and deep breathing in each patient before anesthetic induction. Post-induction hypotension was defined as a decrease of >30% in mean blood pressure from the baseline value or any absolute mean blood pressure value of <65 mmHg for 10 min after anesthetic induction. The predictabilities of Eadyns for the development of post-induction hypotension were tested using receiver-operating characteristic curve analysis. MAIN RESULTS: Invasive Eadyn during deep breathing showed significant predictability with an area under the curve (AUC) of 0.78 (95% Confidence interval [CI], 0.61-0.90, P = 0.001). But non-invasive Eadyn during tidal breathing (AUC = 0.66, 95% CI, 0.49-0.81, P = 0.096) and deep breathing (AUC = 0.53, 95% CI, 0.36-0.70, P = 0.75), and invasive Eadyn during tidal breathing (AUC = 0.66, 95% CI, 0.41-0.74, P = 0.095) failed to predict post-induction hypotension. CONCLUSION: In our study, invasive pre-induction Eadyn during deep breathing -could predict post-induction hypotension. Despite its invasiveness, future studies will be needed to evaluate the usefulness of Eadyn as a predictor of post-induction hypotension because it is an adjustable parameter.
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Anesthetics , Hypotension , Adult , Humans , Stroke Volume/physiology , Arterial Pressure , Hypotension/diagnosis , Hypotension/etiology , Anesthesia, General/adverse effects , Blood PressureABSTRACT
Background: Severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) is the cause of COVID-19. Almost 50% of infected people with the virus are asymptomatic. After the introduction of the COVID-19 vaccine, there is a significant reduction in symptomatic infection among vaccinated individuals. The possibility of viral transmission through blood products is unconfirmed yet. Case report: We report a successful hematopoietic stem cell transplant (HSCT) in a patient with sickle cell anemia from an asymptomatic COVID-19-positive donor who underwent stem cell collection under general anesthesia. No complications were encountered during and after the procedure. The marrow was infused safely with good immune reconstitution in the recipient. Conclusion(s): The report suggests that an asymptomatic COVID-19 positive person might be an acceptable HSCT donor possibly due to existing milder variants of COVID-19.Copyright © 2023 Pediatric Hematology Oncology Chapter of Indian Academy of Pediatrics
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Relevance. The coronavirus rush, which has appeared since December 2019, has an impact on economic, medical, and social development in all countries of the world. There are still no standard diagnostic and therapeutic plans aimed at limiting this infection. Purpose. To determine the therapeutic role of tracheostomy with patients with coronavirus infection. Material. The prospective study of 100 patients with coronavirus infection was carried out on the basis of State Budgetary Healthcare Institution "Interdistrict Multidisciplinary Hospital" in Nartkala city. When patients were admitted to the clinic, they were randomized into 2 groups depending on the therapy: the first group (comparison, n=50) - patients received traditional therapy in intensive care;the second (main, n=50) group - patients underwent tracheostomy in addition to standard therapy. The average age was 56.2+/-4.8 years. The women's average age was 55 years (55.0%), and the men's - 45 years (45.0%). Methods. Determination of the syndrome of endogenous intoxication, taxation of lipid peroxidation intensification. The local microcirculation was investigated by the apparatus LAKK-02. The activity of the coagulation-lytic blood system was found by thrombelastograph TEG 5000. Results. Early COVID-19 infection demonstrates signs of intoxication, oxidative depression, phospholipase activity, microcirculatory and hemostatic disorders. These changes were the cause of the development of life-threatening complications (neurological, pulmonary, cardiac, etc.). They were associated with the type of treatment. Traditional treatment and the use of mask oxygen turned out to be ineffective, since the homeostasis system disorders remained throughout the investigation period. The inclusion of tracheostomy in traditional therapy makes it possible to quickly improve the course of pathology as it purposefully affects the pathogenetic links of the homeostasis system. Conclusion. The use of tracheostomy in the scheme of standard treatment of coronavirus infection allows improving the effectiveness of general therapy of COVID-19 patients, especially with severe forms.Copyright © 2023, Codon Publications. All rights reserved.
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The coronavirus disease 2019 (COVID-19) pandemic is a challenge for all health care providers (HCPs). Anesthesiologists are vulnerable to acquiring the disease during aerosol-generating procedures in operating theater and intensive care units. High index of suspicion, detailed history including travel history, strict hand hygiene, use of face masks, and appropriate personal protective equipment are some ways to minimize the risk of exposure to disease. Neurologic manifestations of COVID-19, modification of anesthesia regimen based on the procedure performed, and HCP safety are some implications relevant to a neuroanesthesiologist. National and international guidelines, recommendations, and position statements help in risk stratification, prioritization, and scheduling of neurosurgery and neurointervention procedures. Institutional protocols can be formulated based on the guidelines wherein each HCP has a definite role in this ever-changing scenario. Mental and physical well-being of HCPs is an integral part of successful management of patients. We present our experience in managing 143 patients during the lockdown period in India.Copyright © 2020 Wolters Kluwer Medknow Publications. All rights reserved.
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Introduction: In the UK between the March 23, 2020 and May 10, 2020, the government enforced a lockdown. This, combined with COVID, caused OMFS hospitals across London to experience a change in staffing, resources and patient presentations. This study examines these changes, how patient care was adapted during this period and what can be learnt for the future. Method(s): Data was collected from OMFS units attached to all 4 level 1 trauma centers in London. Prospective data was collected from March 23, 2020-May 10, 2020 (1st period). Retrospective data was collected from hospital coding records for 23rd of March - May 10, 2019 (2nd period). Data was collected on all referrals to the OMFS team including diagnosis, patient demographics and treatment received. Result(s): There was an 84% reduction in patients presenting with mandible fracture. 2 units with dental emergency services experienced no change in dental abscess presentations whilst the other 2 units saw a decrease of 70-75%. There was a trend towards reducing admission and general anaesthetic treatments. Most mandible fractures were treated in the outpatient setting with 1 unit discharging 100% of mandible fractures that presented to A&E. Only 13 of 72 paediatric lacerations were treated with general anaesthetic. Conclusion(s): The COVID lockdown period, like war time, posed great challenges to healthcare provision. This paper presents the changes experienced and how patients were managed. Aiming to allow reflection and learning to guide changes in management to be adopted for the future.Copyright © 2022
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Cervicofacial infections of dental origin can cause life threatening emergency and we were anticipating that the prevalence of hospital admissions for this reason between the 26 th of March 2020 until the 8 th of June 2020 that the dental practices were closed would increase. We conducted a retrospective analysis of the hospital admissions for cervicfacial infections of dental origin during this period and the results were compared with the admissions the same period last year. Surprisingly there were less admissions in 2020 compared to 2019 which can be attributed to the government guidance to ''Stay at home", "Save lives", "Protect the NHS'' and the treatment provided by the Urgent Dental Care Centers that reduced the pressure on the country's health care system. Proportionately more admissions in 2020 were attributed to dental abscess from mandibular teeth compared to 2019 but there was a small decrease in the incision and drainage under general anesthetic and a small increase in the length of the hospital stay in 2020.Copyright © 2021
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With the outbreak of COVID-19, attention has focused on measures to prevent droplet infection. Operating rooms, where we anesthesiologists mainly work, are equipped with various theories and techniques for performing surgical procedures and general anesthesia on patients with various infectious diseases, whether airborne, droplet, or contact infection, and are an environment where surgical procedures and general anesthesia can be safely performed on patients with compromised immune functions. Here, we describe the anesthesia management standards assuming COVID-19 from the viewpoint of medical safety, as well as the structure for supplying clean air in the operating room and the structure of a negative-pressure operating room.