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Background@#Topical recombinant human epidermal growth factor (rhEGF) is effective in the treatment of diabetic foot ulcers, surgical wounds, burns, and scars. Binding of EGF to EGF receptors results in cell proliferation and differentiation. @*Objective@#This study aimed to evaluate the efficacy of topical rhEGF ointment compared with that of topical mupirocin in healing herpes zoster (HZ) lesions. @*Methods@#Thirty patients diagnosed with typical HZ were recruited in August, 2018. The rats were randomly divided into two groups: topical mupirocin and topical rhEGF ointment. HZ lesions were evaluated using the Vancouver Scar Scale (VSS) at the initial visit, 1st, 2nd, and 4th weeks. @*Results@#The total number of recruited patients (n=30) included males (n=16, 53.3%) and females (n=14, 46.7%) with a mean age of 58.2. The proportion of patients with a 50% reduction in the VSS score (VSS 50) at 2nd week was significantly higher in the rhEGF group (33.0% vs. 72.0%, respectively, p=0.035). The complete resolution rate (VSS=0, 1) at 4th week was also higher in the rhEGF group (17.5% vs. 50.0%, p=0.03). @*Conclusion@#Topical rhEGF showed a more rapid treatment response and anti-scarring effect than topical mupirocin in patients with HZ lesions.
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Each country is providing various community care services owing to the increasingly aging population. Therefore, Korea needs to develop multiple approaches to the healthcare utilization system that can reflect the complex needs of older adult patients.Current Concepts: Considering the characteristics of older adult patients, it is essential to connect the treatment at medical institutions with home or nursing facilities. Some patients need medical and long-term healthcare simultaneously. Currently, healthcare services for older adult patients in Korea are fragmented across various service areas. Therefore, healthcare service plans need to be explored to provide integrated and long-term healthcare for older adult patients.Discussion and Conclusion: We propose to establish a healthcare information linkage center to provide comprehensive information on the appropriate services needed by patients. The healthcare information linkage center would refer patients to their local community or local primary healthcare provider if they want home services. Through this process, doctors and healthcare teams would visit the patient’s residence to provide services and perform a comprehensive assessment of their condition to create a personalized care plan. The core of this proposal lies in the establishment of a single point of contact in the region to link and integrate healthcare. Consequently, information on services appropriate to the needs of the target population would be appropriately linked in one place and overlapping services would be coordinated to improve operational efficiency.
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Background@#The purpose of this study is to analyze the differences in the acceptability of telemedicine between telemedicine-experienced and -inexperienced physicians. @*Methods@#A questionnaire survey was conducted using the Doctor Survey of the Korean Medical Association. A total of 1,385 physicians were included in the analysis. Propensity score matching was used to control selection bias. The chi-square tests were used for bivariate analysis. Multiple logistic regression analysis and multinomial logistic regression analysis were used to adjust for covariates (gender, age, working area, working type, institution type, and the specialty of physicians). @*Results@#Physicians with experience in telemedicine were 2.53 times more likely to accept to allow telemedicine as a medical system than physicians without experience in telemedicine. Physicians with experience in telemedicine responded that telemedicine should be allowed to returning patients only and not be allowed to first-time patients. This response of telemedicine-experienced physicians was 3.73 times higher than that of telemedicineinexperienced physicians. Physicians with experience in telemedicine responded that telemedicine for first-time patients should be only allowed under specific situations. This response of telemedicine-experienced physicians was 2.59 times higher than that of telemedicine-inexperienced physicians. @*Conclusion@#Telemedicine-inexperienced physicians were more acceptable to telemedicine as a medical system than telemedicine-inexperienced physicians. Physicians with experience in telemedicine suggested that telemedicine should be allowed to returning patients only and might be allowed to first-time patients only under specific situations.
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Background@#Many countries need help with the problem of an unbalanced distribution of physicians and hospitals. Moreover, various policies and strategies have been proposed to solve this problem. This study aimed to examine the determinants of the unbalanced distribution of physicians. @*Methods@#From the 2020 Korean Physician Survey data, 4,181 physicians practicing in Korea were limited to the subjects of the study. We analyzed the factors influencing physicians’ choice of practice location and their willingness to change their practice location from an urban to a rural area. @*Results@#The region of physicians’ hometown, medical school, and residency training hospitals determined their choice of practice location. The type of affiliated healthcare organization and the location of physicians’ hometown, medical school, and residency training hospitals affected their willingness to change their practice location from an urban to a rural area. Furthermore, the concordance rate of the regions of physicians’ hometown, medical school, and residency training hospitals with the region of their practice location was 24.9%. @*Conclusion@#In South Korea, policies for doctors have been designed without considering why they are reluctant to work in rural hospitals. To have a balanced distribution of physicians and hospitals, it is necessary to accurately analyze the status of medical resources based on regions and identify the current and future medical demand. The social situation, such as future demographic change and regional extinction, must also be fully considered. Furthermore, policies should be implemented that encourage physicians to work in rural hospitals.
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Background@#This study aimed to investigate the changes in the incidence of shoulder trauma and surgery 1 year after the outbreak of coronavirus disease 2019 (COVID-19) with social restriction compared with 1 year before the pandemic. @*Methods@#Patients managed in our orthopedic trauma center between February 18, 2020, and February 17, 2021 (COVID-19 period) for shoulder trauma were compared with patients managed for the same duration a year ago (non–COVID-19 period; February 18, 2019, to February 17, 2020). The incidence of shoulder trauma, surgery, and mechanism of injury were compared between these periods. @*Results@#The total number of shoulder trauma cases was lower in the COVID-19 period than in the non–COVID-19 period, although the difference was not significant (160 vs. 180 cases, p = 0.278). In addition, traumatic shoulder surgeries decreased during the COVID-19 period (57 vs. 69 cases, p = 0.285). The incidence of shoulder trauma according to four diagnostic classifications (contusion, sprain/subluxation, fracture, and dislocation) and fracture/dislocation types did not differ between the periods. During the COVID-19 period, accidental falls outdoors (45 vs. 67, p = 0.038) and sports-related injuries (15 vs. 29, p = 0.035) significantly decreased, but accidental falls at home (52 vs. 37, p = 0.112) increased compared with those during the non–COVID-19 period, although the difference was not significant. The monthly incidence of shoulder trauma decreased 2 months after the first outbreak (significant in March, p = 0.019), then steadily increased and significantly decreased during the second outbreak (August, p = 0.012).However, the third outbreak (December, p = 0.077) had little effect on the incidence of shoulder trauma. The number of monthly traumatic shoulder surgeries showed a similar pattern to the monthly incidence of shoulder trauma. @*Conclusions@#During the COVID-19 pandemic, annual shoulder trauma cases and surgeries decreased compared to those in the non–COVID-19 period, even though the difference was insignificant. The incidence of shoulder trauma and surgery was significantly reduced in the early COVID-19 period; however, the effect of the pandemic on orthopedic trauma practice was minimal after approximately half a year. Decreases in falls outdoors and sports-related injuries, but an increase in falls at home, were observed during the COVID-19 pandemic.
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Herpes zoster (HZ) is one of the most common cutaneous adverse reactionsassociated with the coronavirus disease 2019 (COVID-19) vaccine and has been widely reported. This study aimed to evaluate HZ following COVID-19 vaccination from the viewpointof pain management.Methods: A retrospective study was conducted on 42 patients with HZ who visited the painclinic between August 2021 and October 2021. Medical records were reviewed to comparepain severity, treatment methods, treatment duration, and incidence rate of postherpeticneuralgia (PHN) in patients who received COVID-19 vaccination within 6 weeks prior to developing symptoms compared with other patients with HZ.Results: Fourteen patients developed HZ within 6 weeks after vaccination and were significantly younger than the other HZ groups. There were no significant differences in the frequency of prodromal pain, location of pain, pain severity, treatment methods, treatmentduration, or incidence of PHN compared with the other HZ groups.Conclusions: COVID-19 vaccination-related HZ showed clinical features similar to those ofthe other HZ.
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Background@#Recent reports have suggested that pneumonitis is a rare complication following vaccination against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).However, its clinical features and outcomes are not well known. The aim of this study was to identify the clinical characteristics and outcomes of patients with vaccine-associated pneumonitis following vaccination against SARS-CoV-2. @*Methods@#In this nationwide multicenter survey study, questionnaires were distributed to pulmonary physicians in referral hospitals. They were asked to report cases of development or exacerbation of interstitial lung disease (ILD) associated with the coronavirus disease 2019 vaccine. Vaccine-associated pneumonitis was defined as new pulmonary infiltrates documented on chest computed tomography within 4 weeks of vaccination and exclusion of other possible etiologies. @*Results@#From the survey, 49 cases of vaccine-associated pneumonitis were identified between February 27 and October 30, 2021. After multidisciplinary discussion, 46 cases were analyzed. The median age was 66 years and 28 (61%) were male. The median interval between vaccination and respiratory symptoms was 5 days. There were 20 (43%), 17 (37%), and nine (19%) patients with newly identified pneumonitis, exacerbation of pre-diagnosed ILD, and undetermined pre-existing ILD, respectively. The administered vaccines were BNT162b2 and ChAdOx1 nCov-19/AZD1222 each in 21 patients followed by mRNA-1273 in three, and Ad26.COV2.S in one patient. Except for five patients with mild disease, 41 (89%) patients were treated with corticosteroid. Significant improvement was observed in 26 (57%) patients including four patients who did not receive treatment. However, ILD aggravated in 9 (20%) patients despite treatment. Mortality was observed in eight (17%) patients. @*Conclusion@#These results suggest pneumonitis as a potentially significant safety concern for vaccines against SARS-CoV-2. Clinical awareness and patient education are necessary for early recognition and prompt management. Additional research is warranted to identify the epidemiology and characterize the pathophysiology of vaccine-associated pneumonitis.
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Background@#In psoriasis treatment, not all body regions improve simultaneously after clinical interventions. @*Objective@#This study was aimed at evaluating clinical responses across body regions, which may differentially influence patient treatment plans. @*Methods@#This prospective, observational, and multi-center study was conducted in Koreans who adhered to ustekinumab treatment based on criteria per local label and reimbursement guidelines. A total of 581 were included in this analysis. @*Results@#The mean (±standard deviation) psoriasis area severity index (PASI) score at baseline, age, disease duration, and body surface area (%) were 18.9±9.69, 44.2±13.29 years, 11.3±9.65 years, and 27.8±17.83, respectively. Across the head and neck, upper extremities, trunk, and lower extremities, the correlation between the PASI sub-scores for the upper and lower extremities was the highest (r=0.680). The mean PASI sub-score for the lower extremities was the highest at baseline. PASI90 and PASI100 scores were the highest for the head and neck region, indicating the highest response rates, while those for the lower extremities were consistently low at all visits. @*Conclusion@#We found differences in regional ustekinumab responses, with the lower extremities being the most difficult to treat. These findings should be considered in psoriasis treatment.
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Objective: To elucidate the potential anti-inflammatory mechanisms of Rhamnus crenata leaf extracts using RAW264.7 cells. Methods: We used 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide assay to measure cell viability. Nitric oxide (NO) production was measured using Griess reagent. Western blotting and RT-PCR assays were carried out for analyzing the protein and gene expressions of pro-inflammatory mediators, respectively. Moreover, PD98059 (ERK1/2 inhibitor), SB203580 (p38 inhibitor), SP600125 (JNK inhibitor), and BAY11-7082 (NF-κB inhibitor) were used to evaluate the anti-inflammatory mechanism of Rhamnus crenata leaf extract. Results: Rhamnus crenata leaf extracts significantly inhibited the production of the pro-inflammatory mediators such as NO, iNOS, COX-2, IL-1β, and TNF-α in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Rhamnus crenata leaf extracts also suppressed LPS-induced degradation of IκB-α and nuclear accumulation of p65, which resulted in the inhibition of NF-κB activation in RAW264.7 cells. Additionally, the extracts attenuated the phosphorylation of p38, ERK1/2, and JNK in LPS-stimulated RAW264.7 cells. Moreover, HO-1 expression induced by Rhamnus crenata leaf extracts was significantly downregulated by SB230580, PD98059, SP600125 and BAY11-7082. Conclusions: Rhamnus crenata leaf extract may upregulate HO-1 expression through inhibition of p38, ERK1/2, and NF-κB activation, which may contribute to the anti-inflammatory activity of the extracts. Rhamnus crenata leaf extracts may have great potential for the development of anti-inflammatory drugs to treat acute and chronic inflammatory diseases.
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Background@#Although respiratory tract infection is one of the most important factors triggering acute exacerbation of chronic obstructive pulmonary disease (AE-COPD), limited data are available to suggest an epidemiologic pattern of microbiology in South Korea. @*Methods@#A multicenter observational study was conducted between January 2015 and December 2018 across 28 hospitals in South Korea. Adult patients with moderate-to-severe acute exacerbations of COPD were eligible to participate in the present study. The participants underwent all conventional tests to identify etiology of microbial pathogenesis. The primary outcome was the percentage of different microbiological pathogens causing AE-COPD. A comparative microbiological analysis of the patients with overlapping asthma–COPD (ACO) and pure COPD was performed. @*Results@#We included 1,186 patients with AE-COPD. Patients with pure COPD constituted 87.9% and those with ACO accounted for 12.1%. Nearly half of the patients used an inhaled corticosteroid-containing regimen and one-fifth used systemic corticosteroids. Respiratory pathogens were found in 55.3% of all such patients. Bacteria and viruses were detected in 33% and 33.2%, respectively. Bacterial and viral coinfections were found in 10.9%. The most frequently detected bacteria were Pseudomonas aeruginosa (9.8%), and the most frequently detected virus was influenza A (10.4%). Multiple bacterial infections were more likely to appear in ACO than in pure COPD (8.3% vs. 3.6%, p=0.016). @*Conclusion@#Distinct microbiological patterns were identified in patients with moderate-to-severe AE-COPD in South Korea. These findings may improve evidence-based management of patients with AE-COPD and represent the basis for further studies investigating infectious pathogens in patients with COPD.
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An 82-year-old male patient was admitted for neck pain, motor weakness in both upper extremities, and gait disorder. The patient had no history of rheumatoid arthritis or other specific histories, and the findings of cervical myelopathy with retro-odontoid pseudotumor were confirmed by cervical magnetic resonance imaging. On cervical radiography, there was no evidence of atlantoaxial instability or subluxation. Therefore, posterior fusion was not performed; only a C1 laminectomy was performed. Immediately after surgery, the pain decreased, and neurological symptoms were also improved. In the case of a retro-odontoid pseudotumor without atlantoaxial instability, it is believed that the symptoms can be improved only with C1 laminectomy.
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no abstract available.
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Study DesignA cross-sectional study.PurposeTo examine the influence of restrictive pulmonary dysfunction on osteoporotic thoracic vertebral fractures.Overview of LiteratureOsteoporotic thoracic vertebral fractures generally result in an increased kyphotic angle, which in turn may lead to pulmonary function impairment. Impaired pulmonary function could be associated with vertebral fractures. However, an association between osteoporotic thoracic vertebral fractures and pulmonary function remains controversial.MethodsA total of 96 patients were enrolled in this study, 30 of whom had osteoporotic thoracic vertebral fractures (group 1), 30 with chronic back pain (group 2), and 36 with chronic pulmonary diseases (group 3). Radiologic study of prevalent vertebral fractures, thoracic kyphotic angle, bone mineral density, relaxed expiratory vital capacity, forced vital capacity (FVC), and forced expiratory volume in 1 second (FEV1) in spirometry was investigated.ResultsThe mean FVC and FEV1 were 75.66%±20.23% and 79.93%±22.48%, respectively, in group 1; 84.50%±16.25% and 91.87%±21.65%, respectively, in group 2; and 91.64%±17.53% and 91.03%±23.71%, respectively, in group 3. Group 1 (patients with osteoporotic thoracic vertebral fracture) had the lowest FVC among the three groups (p=0.01). Group 1 revealed worse result of pulmonary dysfunction than group 3 (patients with chronic pulmonary diseases) (p=0.01). The average kyphosis angle of the thoracic spine was 26.95°±15.17°, 36.47°±20.08°, and 28.58°±10.58° in groups 1, 2, and 3, respectively. There was a negative correlation between thoracic kyphosis and FEV1 (r=−0.309, p=0.01).ConclusionsThe results suggest that osteoporotic thoracic vertebral fracture burden could be affected by restrictive pulmonary dysfunction.
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Background@#In 2015, the Korean Atopic Dermatitis Association (KADA) working group published consensus guidelines for treating atopic dermatitis (AD). @*Objective@#We aimed to provide updated consensus recommendations for systemic treatment of AD in South Korea based on recent evidence and experience. @*Methods@#We compiled a database of references from relevant systematic reviews and guidelines on the systemic management of AD. Evidence for each statement was graded and classified based on thestrength of the recommendation. Forty-two council members from the KADA participated in three rounds of voting to establish a consensus on expert recommendations. @*Results@#We do not recommend long-term treatment with systemic steroids forpatients with moderate-to-severe AD due to the risk of adverse effects. We recommend treatment with cyclosporine or dupilumab and selective treatment with methotrexate or azathioprine for patients with moderate-to-severe AD. We suggest treatment with antihistamines as an option for alleviating clinical symptoms of AD. We recommend selective treatment with narrowband ultraviolet B for patients with chronic moderate-to-severe AD. We do not recommend treatment with oral antibiotics for patients with moderate-to-severe AD but who have no signs of infection. We did not reach a consensus on recommendations for treatment with allergen-specific immunotherapy, probiotics, evening primrose oil, orvitamin D for patients with moderate-to-severe AD. We also recommend educational interventions and counselling for patients with AD and caregivers to improve the treatment success rate. @*Conclusion@#We look forward to implementing a new and updated consensus of systemic therapy in controlling patients with moderate-to-severe AD.
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Background@#To suggest measures to prevent burnout of physicians during the coronavirus disease 2019 (COVID-19) pandemic, we conducted a systematic review of research on physician burnout due to COVID-19. @*Methods@#Three foreign databases were used: MEDLINE, Embase, and the Cochrane Library. A search was performed using the following search terms: COVID-19, coronavirus, NCOV, physicians, doctors, residents, and burnout. Four rounds of review were performed to enhance the consistency of quality assessment. The Joanna Briggs Institute checklist for analytical cross-sectional studies was used to assess the quality of the eligible studies. @*Results@#A total of 465 studies were identified, of which 32 were selected. The quality assessment determined that 19 studies met the Joanna Briggs Institute criteria and had a low risk of bias. The most common tool used to measure physician burnout in the 32 studies was the Maslach Burnout Inventory. @*Conclusion@#This study systematically evaluated the literature on physician burnout. However, the generalizability of our findings to Korean physicians may be limited. The composition of the medical personnel in Korea, such as open doctors, volunteer doctors, medical professors, and public health doctors, differs significantly from that of other countries. Nevertheless, evaluating the current status of physician burnout due to COVID-19 globally may hold meaningful implications for policymaking.
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Purpose@#The purpose of this randomized controlled trial was to compare the effects of abdominal binder after laparoscopic cholecystectomy. @*Methods@#From August to December 2020, 66 patients who were set to undergo cholecystectomy were selected for a prospective trial at Kangbuk Samsung Hospital, Seoul, Republic of Korea, and their clinical characteristics and postoperative surgical outcomes were evaluated. Among 66 patients, 33 patients belong to the abdominal binder group and the other 33 patients belong to the control group. @*Results@#The average hospital stay was 2.46 ± 1.29 days, and was not significantly different between the two groups. The average postoperative pain score (visual analogue scale, 0–10) 12, 24, and 48 hours after surgery were not significantly different. However, the degree of comfort score was significantly higher for the control group patients (2.56 vs. 3.33, p < 0.001). Time to the first ambulation, walking ability, return of bowel function, time to full diet resumption, and the numbers of analgesics and antiemetics administered were not significantly different between the two groups. @*Conclusion@#No postoperative recovery benefit and no reduction in hospital stay was found in patients who used an abdominal binder while undergoing laparoscopic cholecystectomy. Statistically, between the group that used the binder and the one that did not, no significant differences in surgical outcome nor postoperative outcome were observed. The only exception was that the degree of comfort score was significantly higher in the control group. Therefore, in terms of patient benefit and convenience, wearing an abdominal binder after laparoscopic cholecystectomy is not recommended.
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Background@#The direct entry of the camera under the epiglottis may provide a better view of the glottis than the indirect lifting of the epiglottis by placing the Macintosh blade tip on the vallecula when using the video laryngoscope. This study aimed to compare the efficiency of two different methods of lifting the epiglottis during the visualization of glottis using video laryngoscopy in the same patient. @*Methods@#This prospective study enrolled 60 patients who underwent general anesthesia with tracheal intubation. In each patient, glottic views were obtained by directly (group DE) and indirectly lifting the epiglottis (group IE). These two methods were compared using the modified Cormack and Lehane grade and the percentage of glottis opening (POGO) score as assessment parameters. @*Results@#Modified Cormack and Lehane grade showed a significant difference between the groups DE and IE (P = 0.004). The difference in the POGO score between the groups DE and IE was also statistically significant (87.5% and 64.4%, respectively; P < 0.001). @*Conclusions@#Our results, therefore, revealed that the method of directly lifting epiglottis was better at exposing glottis than the method of indirectly lifting epiglottis using a video laryngoscope.
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Background@#To suggest measures to prevent burnout of physicians during the coronavirus disease 2019 (COVID-19) pandemic, we conducted a systematic review of research on physician burnout due to COVID-19. @*Methods@#Three foreign databases were used: MEDLINE, Embase, and the Cochrane Library. A search was performed using the following search terms: COVID-19, coronavirus, NCOV, physicians, doctors, residents, and burnout. Four rounds of review were performed to enhance the consistency of quality assessment. The Joanna Briggs Institute checklist for analytical cross-sectional studies was used to assess the quality of the eligible studies. @*Results@#A total of 465 studies were identified, of which 32 were selected. The quality assessment determined that 19 studies met the Joanna Briggs Institute criteria and had a low risk of bias. The most common tool used to measure physician burnout in the 32 studies was the Maslach Burnout Inventory. @*Conclusion@#This study systematically evaluated the literature on physician burnout. However, the generalizability of our findings to Korean physicians may be limited. The composition of the medical personnel in Korea, such as open doctors, volunteer doctors, medical professors, and public health doctors, differs significantly from that of other countries. Nevertheless, evaluating the current status of physician burnout due to COVID-19 globally may hold meaningful implications for policymaking.
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Purpose@#The purpose of this randomized controlled trial was to compare the effects of abdominal binder after laparoscopic cholecystectomy. @*Methods@#From August to December 2020, 66 patients who were set to undergo cholecystectomy were selected for a prospective trial at Kangbuk Samsung Hospital, Seoul, Republic of Korea, and their clinical characteristics and postoperative surgical outcomes were evaluated. Among 66 patients, 33 patients belong to the abdominal binder group and the other 33 patients belong to the control group. @*Results@#The average hospital stay was 2.46 ± 1.29 days, and was not significantly different between the two groups. The average postoperative pain score (visual analogue scale, 0–10) 12, 24, and 48 hours after surgery were not significantly different. However, the degree of comfort score was significantly higher for the control group patients (2.56 vs. 3.33, p < 0.001). Time to the first ambulation, walking ability, return of bowel function, time to full diet resumption, and the numbers of analgesics and antiemetics administered were not significantly different between the two groups. @*Conclusion@#No postoperative recovery benefit and no reduction in hospital stay was found in patients who used an abdominal binder while undergoing laparoscopic cholecystectomy. Statistically, between the group that used the binder and the one that did not, no significant differences in surgical outcome nor postoperative outcome were observed. The only exception was that the degree of comfort score was significantly higher in the control group. Therefore, in terms of patient benefit and convenience, wearing an abdominal binder after laparoscopic cholecystectomy is not recommended.
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Background@#The direct entry of the camera under the epiglottis may provide a better view of the glottis than the indirect lifting of the epiglottis by placing the Macintosh blade tip on the vallecula when using the video laryngoscope. This study aimed to compare the efficiency of two different methods of lifting the epiglottis during the visualization of glottis using video laryngoscopy in the same patient. @*Methods@#This prospective study enrolled 60 patients who underwent general anesthesia with tracheal intubation. In each patient, glottic views were obtained by directly (group DE) and indirectly lifting the epiglottis (group IE). These two methods were compared using the modified Cormack and Lehane grade and the percentage of glottis opening (POGO) score as assessment parameters. @*Results@#Modified Cormack and Lehane grade showed a significant difference between the groups DE and IE (P = 0.004). The difference in the POGO score between the groups DE and IE was also statistically significant (87.5% and 64.4%, respectively; P < 0.001). @*Conclusions@#Our results, therefore, revealed that the method of directly lifting epiglottis was better at exposing glottis than the method of indirectly lifting epiglottis using a video laryngoscope.