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BACKGROUND: Inoperable malignant bowel obstruction, which results in chronic nausea, vomiting and abdominal pain, often requires nasogastric tube decompression. However, these tubes are often uncomfortable for patients and require hospitalization during the end-of-life care. Cervical esophago-gastric (CEG) decompression tubes are a potential palliative solution. The objective of this study is to present the outcomes of CEG tubes in 11 patients with malignant bowel obstruction. METHODS: We performed a retrospective review of patients requiring nasogastric tube decompression who received CEG decompression tubes for inoperable malignant bowel obstructions between 2016-2022. CEG tube placement was performed percutaneously through the left neck using a guidewire and an endoscopic technique. RESULTS: The average age of patients was 58 years (31-72 years), with metastatic colorectal cancer (36.4%) and ovarian cancer (27.3%) being the most common causes of malignant bowel obstruction. All procedures were completed percutaneously, without requiring conversion to open procedures. The morbidity of the procedure was 27%, which included tube dislodgement, local cellulitis, or bleeding at the insertion site. None of the patients required reoperation, with most of the patients successfully treated conservatively. Most patients were discharged home after the procedure (82%); however, 45% were readmitted (mostly due to abdominal pain). Most patients (73%) were able to continue additional chemotherapy after tube placement. The average survival from cancer diagnosis was approximately six months, whereas the average survival after the procedure was about four months. No mortalities occurred due to CEG tube placement. CONCLUSIONS: A CEG decompression tube is safe for patients with malignant bowel obstruction. The procedure allows patients to undergo additional chemotherapy and be discharged home with a more comfortable tube.

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BACKGROUND: Low back pain (LBP) is a globally prevalent condition, often attributed to lumbar disc herniation (LDH). Transforaminal percutaneous endoscopic discectomy (TPED) is a minimally invasive surgical approach for LDH, offering distinct advantages. This study aimed to assess the progression of pain in patients who underwent TPED in Kenya, with a focus on the impact of pre-existing factors. METHODS: This retrospective study included 610 patients from the Mediheal Group of Hospitals who underwent TPED between January 2018 and December 2022. Data were collected from medical records, direct patient interactions, and telephone interviews. Statistical analyses, including repeated measures analysis of variance, correlation coefficients, and t tests, were used to examine pain progression and factors influencing outcomes. RESULTS: Among the 610 included patients, all reported LBP and 87.9% reported leg pain. TPED resulted in significant pain reduction (P < 0.001) for both LBP and leg pain, with sustained improvement over 1 year. Factors such as age, body mass index, and duration of pain correlated with pain outcomes. No significant impact of comorbidities on pre- or postoperative pain was observed. Its retrospective design and the absence of a control group limit the strength of causal inferences. CONCLUSIONS: TPED is an effective treatment for LBP and leg pain in Kenyan patients with LDH. Pain improvement was sustained over 1 year after performing TPED, and pre-existing factors influenced outcomes. This study provides valuable insights into TPED outcomes, contributing to the understanding of LDH management in diverse populations.

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OBJECTIVES: Endoscopic necrosectomy (EN) is a promising minimally invasive approach for treating infected walled-off pancreatic necrosis (WOPN). Multiple EN approaches are currently available, though criteria for selecting the optimal approaches are lacking. We aimed to propose a rational selection strategy of EN and to retrospectively evaluate its safety and effectiveness. METHODS: Altogether 101 patients who underwent EN for infected WOPN at a tertiary hospital between June 2009 and February 2023 were retrospectively included for analysis. Demographic characteristics, details of the EN procedures, procedure-related adverse events, and clinical outcomes were investigated. RESULTS: Among these 101 patients with WOPN, 56 (55.4%) underwent transluminal EN, 38 (37.6%) underwent percutaneous EN, and seven (6.9%) underwent combined approach, respectively. Clinical success was achieved in 94 (93.1%) patients. Seven (6.9%) experienced procedure-related adverse events, and seven (6.9%) died during the treatment period. During a median follow-up of 50 months, 5 (5.3%) of the 94 patients had disease recurrence, 17.0% (16/94) had new-onset diabetes mellitus, and 6.4% (6/94) needed oral pancreatic enzyme supplementation. The clinical success rate, procedure-related adverse event rate, and long-term follow-up outcomes were not significantly different among the three groups. High APACHE-II scores (≥15) and organ failure were identified as factors related to treatment failure. CONCLUSIONS: A selection strategy for EN approaches, based on the extent of necrosis and its distance from the gastrointestinal lumen (using a threshold of 15 mm), is safe and effective for treating infected WOPN in both short-term and long-term outcomes.

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We report the case of a 74-year-old woman with Parkinson's disease (PD) who developed acute dysphagia, dysarthria, and hoarseness. A neurological examination and nasopharyngeal fiberscopy revealed paralysis of the left glossopharyngeal, vagus, and hypoglossal nerves. No skin rash was observed. Cerebrospinal fluid testing showed lymphocytic pleocytosis, and an elevated varicella-zoster virus (VZV) IgG antibody index. She was diagnosed with zoster sine herpete unilaterally affecting multiple lower cranial nerves. Although dysphagia is common in patients with PD, acute exacerbations of dysphagia require careful investigation of various potential causes, including VZV infection.

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BACKGROUND: Unilateral laminotomy for bilateral decompression (ULBD) has yielded positive results in the treatment of lumbar spinal stenosis (LSS). Unilateral biportal ULBD (UB-ULBD) and percutaneous endoscopic ULBD (PE-ULBD) are gaining popularity because of the progress that has been made in minimally invasive surgery (MIS). The objective of this study was to evaluate and compare the radiographic and clinical results of UB-ULBD and PE-ULBD. METHODS: This study retrospectively enrolled patients who underwent ULBD surgery for LSS. The patients were categorized into two groups on the basis of the surgical method: the UB-ULBD group and the PE-ULBD group. Data on the general demographic data, surgical details, clinical efficacy, radiography and complications were compared between the two groups were compared. The minimum follow-up duration was 12 months. RESULTS: A total of 113 LSS patients who had undergone ULBD at our institution were included, of whom 61 patients underwent UB-ULBD surgery and 52 underwent PE-ULBD surgery. The UB-ULBD group had a significantly shorter operation time (P < 0.05). The facet was significantly better preserved in the UB-ULBD group than in the PE-ULBD group, and the angle of ipsilateral facet joint resection in the UE-ULBD group was significantly smaller (P < 0.05). The ODI score, VAS score and modified Macnab criteria improved postoperatively in both groups. The UB-ULBD group had a 95.08% rate of excellent or good patient outcomes, whereas the PE-ULBD group had a 92.30% rate. CONCLUSION: Both UB-ULBD and PE-ULBD can provide favourable clinical outcomes when used to treat LSS. UB-ULBD is beneficial because of its shorter operation time, smaller angle of ipsilateral facet joint resection and better facet preservation, making it a viable and safe option for treating LSS while ensuring spinal stability.

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BACKGROUND: Percutaneous endoscopic gastrostomy (PEG) tubes are commonly inserted to provide a route for enteral feeding in patients who are unlikely to have adequate oral intake for prolonged periods of time. This study aims to determine the incidence of aspiration pneumonia among PEG tube patients. METHODS: We conducted a retrospective analysis of NIS database records (October 2015 to December 2020) for patients with PEG. Primary and secondary outcomes were assessed using ICD-10-CM/PCS codes. RESULTS: We identified a total of 2,053,560 weighted hospitalizations involving patients with PEG tube. Those with aspiration pneumonia were older (mean age 67.01 vs. 63.85, p<0.01) and were predominantly male. At baseline, the aspiration pneumonia group had higher rates of dementia (AOR 1.22, 95% CI: 1.19-1.24), malnutrition (AOR 1.13, 95% CI: 1.11-1.15), cerebrovascular disease (AOR 1.29, 95% CI 1.25-1.33), cardiac arrhythmias (AOR 1.05, 95% CI 1.03-1.08), congestive heart failure (AOR 1.20, 95% CI 1.17-1.24), COPD (AOR 1.18, 95% CI 1.15-1.20), paralysis (AOR 1.06, 95% CI 1.03-1.09), alcohol abuse (AOR 1.12, 95% CI 1.07-1.17), and psychoses (AOR 1.07, 95% CI 1.02-1.13). Those with aspiration pneumonia exhibited increased mortality (p<0.01, AOR 1.59, 95% CI 1.54-1.65), higher incidence of severe sepsis (AOR 2.03, 95% CI 1.98-2.07) and longer hospital stays, and accrued greater hospital charges (p<0.01). Notably, while GERD is typically considered a risk factor for AP, our findings indicated that GERD was associated with a decreased risk of AP in this patient population. CONCLUSION: Patients with a PEG tube who develop aspiration pneumonia experience increased mortality rates, extended hospitalizations, a higher frequency of septic shock, and augmented healthcare consumption. Notably, old male, congestive heart failure, cerebrovascular disease, dementia, and COPD play a pivotal role in predicting these outcomes.

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INTRODUCTION: In percutaneous endoscopic lumbar discectomy (PELD), pain occurs when the posterior longitudinal ligament (PLL) is exposed, removed, and decompressed. However, pain characteristics of the PLL stimulated in PELD have not been reported. METHODS: A total of 932 patients underwent PELD under local anesthesia. Pain distribution and intensity were recorded on a posterior body diagram during the operation. Pain intensity was assessed by the visual analog scale scores for the back (VAS-B). The PLL specimens were collected and observed using hematoxylin-eosin (HE) staining and immunohistochemistry. RESULTS: Patients with lumbar disc herniation (LDH) at L4/5 and L5/S1 had pain foci in different regions. The mean VAS-B scores between the ventral and dorsal sides of the PLL were 6.14 ± 0.97 and 4.80 ± 1.15, respectively (P < 0.05). The distribution of nociceptive nerve fibers in the dorsal side was uniform and scattered, while those in the ventral side were mainly distributed near the outer surface of the annulus fibrosus. The positive expression of substance P (SP) and calcitonin gene-related peptide (CGRP) was higher in the ventral side of the PLL than in the dorsal side (P < 0.0001). CONCLUSIONS: Differences in pain distribution and intensity were observed when the PLL was incited at different spinal levels during PELD surgery.

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INTRODUCTION: The main risk factors for major complications and early mortality after the positioning of percutaneous endoscopic gastrostomy (PEG) reported in the literature are old age, multimorbidity, and the use of inappropriate methods for PEG positioning. A proper PEG positioning technique and adequate post-positioning patient management and surveillance are the main protective factors, but the information on protective factors in the literature is much poorer. The aim of this study was to provide more information on PEG-related complications and mortality in geriatric patients treated with long-term enteral nutrition administered by PEG according to a specific home enteral nutrition (HEN) protocol. METHODS: This was a retrospective study based on data from 136 elderly patients in whom PEG was positioned from 2017 to 2023 at the geriatric hospital IRCCS INRCA, Ancona (Italy), 88 of whom were treated with HEN. Data on PEG-related complications, duration of HEN, hospitalizations, and mortality were analyzed. RESULTS: No complications were registered during or immediately after the PEG positioning. The prevalence of a major complication-buried bumper-was in the lower limit of the range reported in the literature (4.32%). The prevalence of minor complications such as peristomal leakage, inadvertent tube removal, and granulation tissue was higher than that reported in the literature (14.71%, 23.53%, 29.41%), while tube blockage and peristomal site infection were less frequent (8.82%, 38.23%). Three hospitalizations for PEG-related complications occurred. Both the all-cause 30-day mortality and within-two-months mortality were lower than those in the literature (1.92% and 3.84%). CONCLUSIONS: The impact of the risk factors recognized by the literature on complications and mortality could be probably mitigated by improving the PEG placement techniques and pre- and post-PEG placement patient management practices. Data on the prevalence of complications and mortality must be interpreted in correlation to this information.

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Introduction: Spondylodiscitis (SD) is an infection of the intervertebral disc with involvement of the adjacent vertebral bodies. Diagnostic tests with CT-guided biopsy only provide a positive yield in 14%-48% of cases. Percutaneous endoscopic debridement and drainage (PEDD) has recently shown promise in the treatment of spondylodiscitis. Research question: The purpose of this study is to determine differences in pathogen identification and clinical outcomes for PEDD versus CT-guided needle biopsy in SD patients. Materials and methods: We conducted a systematic review of the literature using PRISMA guidelines to determine differences in positive microbiology results, perioperative complications, pain control, and long-term clinical outcomes for PEDD vs. CT-guided needle biopsy in SD patients. Results: 1078 studies were evaluated, 87 of which underwent full review. 15 studies met the inclusion and exclusion criteria, including 7 PEDD, 7 CT-guided biopsy, and 1 CT-guided biopsy vs. PEDD article, for a total of 192 PEDD patients and 604 CT-guided biopsy patients. We found 36.59% of CT-guided biopsy patients had positive microbiology results, compared to 84.38% of PEDD patients. No major perioperative complications occurred as a result of the PEDD procedure. Of the five PEDD studies that reported pain outcomes, greater than 80% of patients experienced relief after intervention. Discussion and conclusion: These results suggest that PEDD may improve pathogen identification while simultaneously reducing pain compared to CT-guided needle biopsy in SD. Although current treatment guidelines recommend CT-guided biopsy, in patients with severe back pain and suspected SD, PEDD can be considered an alternative intervention.

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BACKGROUND: Spinal cord stimulation is an established technique wherein diverse electrode types are strategically implanted within the spinal epidural space for neuromodulation. Traditional percutaneous puncture cylindrical electrodes (PEs) are predominantly implanted by interventionalists utilizing a percutaneous technique under the monitor of radiation, which is a nonvisualized procedure. OBJECTIVE: Our study aimed to assess the feasibility of percutaneous endoscope-assisted visualized implantation approach for PEs, delineating its specific merits and demerits compared to the traditional method. STUDY DESIGN: Laboratory study with Institutional Review Board Number B2023-056SETTING: Clinical Anatomy Research Center, Fudan University. METHODS: Eight freshly procured adult cadavers (4 women and 4 men) were operated on in this study. They were divided into either Group A or Group B, each encompassing 4 cadavers. Group A was subjected to endoscope-assisted PEs implantation, whereas Group B followed the conventional PEs implantation route.In both groups the operative time of introducer needles placement (OTNP), total operative time (TOT), fluoroscopy time of introducer needles placement (FTNP), and total fluoroscopy time (TFT) were documented and analyzed. Furthermore, the precise positioning of the PEs and any ensuing complications were systematically examined. RESULTS: Both Group A and Group B successfully executed all predetermined surgical steps. A total of 16 PEs were implanted (dual electrodes in each cadaver): 8 using the percutaneous endoscope-assisted visualized approach (Group A) and 8 via the traditional methodology (Group B). Group A's mean ± SD durations for OTNP, TOT, FTNP, and TFT were 10.25 ± 1.03 minutes, 31.63 ± 5.87 minutes, 4.58 ± 1.35 seconds, and 43.73 ± 14.46 seconds, respectively. In contrast, Group B exhibited mean ± SD times of 11.55 ± 2.81 minutes, 44.75 ± 7.85 minutes, 23.53 ± 4.16 seconds, and 66.30 ± 6.35 seconds for the same metrics. No discernible statistical difference in OTNP and TOT emerged between the groups. However, Group A demonstrated reduced durations for both FTNP and TFT compared to Group B. The optimal position of the PEs was verified via fluoroscopy, with no recorded instances of dura rupture. These outcomes suggest that this endoscope-assisted technique neither increases surgical time nor compromises efficacy. Instead, it leads to a marked reduction in fluoroscopic duration relative to the traditional methodology. LIMITATIONS: Anatomical study on a human cadaver, the quantity of cadavers, and the procedure's steep learning curve. CONCLUSION: With the assistance of percutaneous spinal endoscopy, introducer needles can be punctured through the ligamentum flavum at the anticipated interlaminar window locus under direct visualization, improving the convenience of the puncture and reducing fluoroscopic exposure. It is a viable alternative for surgeons from diverse training backgrounds to implant PEs, particularly benefiting those well-versed in endoscopic spine surgery techniques.

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BACKGROUND: Percutaneous endoscopic gastrostomy (P.E.G.) is recommended for stroke patients with dysphagia to sustain oral nutrition. OBJECTIVE: This study assesses the outcomes of stroke patients undergoing P.E.G. compared with those requiring nasogastric tube (N.G.T) or control group. METHODS: We performed a thorough search across five electronic databases to gather pertinent studies. Outcomes were analyzed using relative risk (R.R.) for categorical data and mean difference (M.D.) for continuous data, each with 95% confidence intervals (C.I.). The single-arm meta-analysis results were presented as proportions or mean changes, also with 95% C.I. RESULTS: We included 22 studies consisting of 996,567 patients. Our double-arm meta-analysis (924,134 patients) revealed no significant difference in post-hospitalization or in-hospital mortality between P.E.G. and control groups. However, P.E.G. patients showed a higher risk of aspiration pneumonia than control (R.R. = 11.72[3.75, 36.62], p < 0.00001). A comparison of P.E.G. and N.G.T. in three studies involving 691 patients indicated a non-significant difference in-hospital mortality risk (R.R. = 0.59, 95% C.I. [0.2, 1.72]). The single-arm analysis of stroke patients with P.E.G. identified a 19.8% in-hospital mortality, 13.6% rate of aspiration pneumonia, and 58% rate of pneumonia. CONCLUSION: Stroke patients undergoing P.E.G remain at high risk for aspiration pneumonia and with an in-hospital mortality suggesting the need for identifying the best candidates and timing for the procedure.

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BACKGROUND: Frailty is common in stroke, where it exerts disease- and treatment-modifying effects. However, there has been little work evaluating how frailty influences outcomes after percutaneous endoscopic gastrostomy (PEG) tube insertion. This study investigates the relationship between pre-stroke frailty and one-year mortality following PEG insertion. METHODS: A pre-stroke frailty index (FI) was calculated for individuals with post-stroke dysphagia who underwent PEG insertion between March 2019 and February 2021. Mortality was recorded at one year, as well as instances of post-PEG pneumonia and discharge destination. RESULTS: Twenty-nine individuals underwent PEG insertion, eleven (37.9%) of whom died in the subsequent year. The mean (SD) FI for those who survived was 0.10 (0.09), compared to 0.27 (0.19) for those who died (p = 0.02). This remained significant after adjustment for age and sex, with each 0.1 increase in the FI independently associated with an increased odds of one-year mortality (aOR 1.39, 95% CI 1.17-1.67). There was no association between frailty and post-PEG pneumonia (0.12 (0.21) in those who aspirated versus 0.11 (0.18) in those who did not, p = 0.75). CONCLUSIONS: Pre-stroke frailty is associated with increased one-year mortality after PEG, a finding that may help inform shared clinical decision-making in complex decisions regarding PEG feeding.

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OBJECTIVE: The purpose of this study was to investigate the long-term consequences on the cervical spine after Anterior transcorporeal percutaneous endoscopy cervical discectomy (ATc-PECD) from the biomechanical standpoint. METHODS: A three-dimensional model of the normal cervical spine C2-T1 was established using finite element method. Subsequently, a disc degeneration model and degeneration with surgery model were constructed on the basis of the normal model. The same loading conditions were applied to simulate flexion, extension, lateral bending and axial rotation of the cervical spine. We calculated the cervical range of motion (ROM), intradiscal pressure, and intravertebral body pressure under different motions for observing changes in cervical spine biomechanics after surgery. At the same time, we combined the results of a long-term follow-up of the ATc-PECD, and used imaging methods to measure vertebral and disc height and cervical mobility, the Japanese Orthopaedic Association (JOA) score and visual analog scale (VAS) score were used to assess pain relief and neurological functional recovery. RESULTS: The long-term follow-up results revealed that preoperative JOA score, neck VAS score, hand VAS score, IDH, VBH, and ROM for patients were 9.49 ± 2.16, 6.34 ± 1.68, 5.14 ± 1.48, 5.95 ± 0.22 mm, 15.41 ± 1.68 mm, and 52.46 ± 9.36° respectively. It changed to 15.71 ± 1.13 (P < 0.05), 1.02 ± 0.82 (P < 0.05), 0.77 ± 0.76 (P < 0.05), 4.73 ± 0.26 mm (P < 0.05), 13.67 ± 1.48 mm (P < 0.05), and 59.26 ± 6.72° (P < 0.05), respectively, at 6 years postoperatively. Finite element analysis showed that after establishing the cervical spondylosis model, the overall motion range for flexion, extension, lateral bending, and rotation decreased by 3.298°, 0.753°, 3.852°, and 1.131° respectively. Conversely, after establishing the bone tunnel model, the motion range for these actions increased by 0.843°, 0.65°, 0.278°, and 0.488° respectively, consistent with the follow-up results. Moreover, analysis of segmental motion changes revealed that the increased cervical spine mobility was primarily contributed by the surgical model segments. Additionally, the finite element model demonstrated that bone tunneling could lead to increased stress within the vertebral bodies and intervertebral discs of the surgical segments. CONCLUSIONS: Long-term follow-up studies have shown that ATc-PECD has good clinical efficacy and that ATc-PECD can be used as a complementary method for CDH treatment. The FEM demonstrated that ATc-PECD can lead to increased internal stresses in the vertebral body and intervertebral discs of the operated segments, which is directly related to cervical spine degeneration after ATc-PECD.

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Percutaneous endoscopic gastrostomy (PEG) is widely used for long-term enteral nutrition in patients unable to maintain adequate oral intake. Despite advancements in PEG techniques, complications remain a concern. We report a case of a 94-year-old bedridden man who developed significant complications after PEG placement using the pull method. Initially, minor bleeding at the puncture site was managed using traction compression. However, the patient later experienced hemorrhagic shock owing to pulsatile bleeding around the gastrostomy site. Despite attempts to control the bleeding through traction and transfusions, a pseudoaneurysm adjacent to the PEG button was identified. The patient underwent successful transcatheter arterial embolization (TAE). Post-TAE, no further bleeding or hematoma was observed, and imaging confirmed the resolution of the pseudoaneurysm and hematoma. Methicillin-resistant Staphylococcus aureus (MRSA) infection was detected at the gastrostomy site, which contributed to complications. Despite successful management of the bleeding, the patient's overall condition deteriorated, and he died on postoperative day 66. This case underscores the importance of vigilant monitoring and management of PEG-related complications, particularly infections that may precipitate severe vascular events.

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BACKGROUND: Initiation of feeding after percutaneous endoscopic gastrostomy (PEG) placement has been debated. Randomized controlled trials (RCTs) have been performed on early feeding compared with delayed feeding after PEG placement with varying results. Therefore, a meta-analysis was conducted examining early vs delayed feeding after placement of a PEG. METHODS: A comprehensive search of databases was conducted in January 2024. Peer-reviewed published RCTs comparing early feeding (≤4 h) with delayed feeding (>4 h) were identified and included in the meta-analysis. Meta-analysis was completed using pooled estimates of overall complications, individual complications, mortality ≤72 h, and number of day 1 significant gastric residual volumes. RESULTS: Six RCTs (n = 467) were included in the analysis. Comparison of early feeding with delayed feeding after PEG showed no statistically significant differences for overall complications (P = 0.18), mortality ≤72 h (P = 0.3), and number of day 1 significant gastric residual volumes (P = 0.05). No differences were also noted for individual complications, including vomiting, wound infection, bleeding, or diarrhea. CONCLUSION: Feeding ≤4 h after PEG have no differences in minor and major complications compared with that of delayed feeding. Early feeding ≤4 h is safe and should be recommended in future guidelines.

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Background: Although percutaneous endoscopic gastrostomy (PEG) placement is still widely practiced in Japan, studies from Western countries report that it is less beneficial for patients in end-of-life care with cognitive decline. Decisions regarding PEG placement are largely influenced by physician judgment. Objectives: The aim of this study was to investigate the background and perceptions of Japanese physicians regarding PEG for older adults in end-of-life care and to identify the factors associated with differences in physician judgment regarding PEG. Design: The study employed a cross-sectional design. Setting/Subjects: A questionnaire on PEG for older adults in end-of-life care was sent to Japanese physicians. Logistic regression analysis was used to calculate the odds ratios (ORs) and confidence intervals (CIs) of the association between PEG recommendations and each factor. Results: PEG placement was advised for bedridden patients and older adults with cognitive decline by 26% of the physicians who responded to the survey. Differences in physician perceptions of PEG feeding were associated with the recommendation for PEG, benefits of preventing aspiration pneumonia (OR: 4.9; 95% CI: 3.1-8.2), impact on post-discharge accommodation decisions (OR: 6.1; 95% CI: 1.9-30.9), and hesitancy to recommend a PEG placement (OR: 1.9; 95% CI: 1.3-4.5). Working in a facility with PEG placement (OR: 2.0; 95% CI: 1.2-3.5) was an associated background factor. Conclusions: Differences in Japanese physicians' attitudes toward using PEG feeding for older adults in end-of-life care were significantly associated with differences in their perceptions of the impact of PEG feeding and working in a facility with PEG placement.

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PURPOSE: This study aimed to assess the clinical effectiveness and safety of percutaneous endoscopic interlaminar discectomy (PEID) in the management of high-grade migrated Lumbar disc herniation (LDH). METHODS: A total of 328 patients who underwent PEID for high-grade migrated LDH between May 2020 and January 2023 in our hospital were selected. Patients were categorized into high-grade migrated group and low-grade migrated group according to preoperative MRI findings. The preoperative and postoperative evaluations of clinical outcomes, such as Visual Analogue Scale (VAS) for lower backs and legs, Oswestry Disability Index (ODI), and modified MacNab criteria for surgical success, were compared between groups. RESULTS: No statistically significant differences were found in hospitalization time, surgery time, intraoperative hemorrhage, number of intraoperative fluoroscopies, or incision length between the two groups. The lower back and leg VAS scores and ODI exhibited a statistically significant decrease in both groups across all postoperative time intervals. However, the difference between the two groups was not statistically significant. Postoperative nerve root stimulation symptoms were reported in two and three cases in the high-grade migrated group and low-grade migrated group, respectively. One patient in the high-grade migrated group underwent reoperation due to re-herniation at the same segment. There was no significant difference in the rate of excellent-good cases between the two groups, with an overall rate of 94.7%. CONCLUSION: In treating high-grade migrated disc herniation, PEID offers advantages such as reduced trauma, small incision, quicker recovery and satisfactory clinical safety and efficacy.

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BACKGROUND: Mitochondrial diseases (MDs) are systemic disorders that can affect multiple organs. Renal manifestations, including renal tubular acidosis, are common because kidneys are particularly vulnerable to energy deprivation. Treatment of MDs is often complex and electrolyte replacement can be difficult especially in pediatric patients, because large and repeated amounts of oral supplements are needed but are not well tolerated. CASE PRESENTATION: We describe the case of a girl affected by Kearns-Sayre disease with severe renal tubular acidosis. The management of her metabolic acidosis was challenging because she showed persistent low levels of serum bicarbonates despite a progressive incrementation of oral bicarbonates. Furthermore, as a result to the ingestion of large amounts of alkali, the girl developed an aversion to oral supplementation. After positioning a percutaneous gastrostomy (PEG) and starting enteral administration of bicarbonates (with daily boluses and continuous nocturnal infusion), she finally obtained an adequate electrolyte control, with a significant increase in her quality of life. CONCLUSIONS: In MDs, the combination of nocturnal continuous enteral administration of alkali plus diurnal boluses may represent a valid solution to correct metabolic acidosis. It can also result in an improved patients' quality of life, particularly in pediatric settings, where compliance to oral therapy is often lacking due to the large and repeated amounts of unpalatable bicarbonates solutions required.

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Background: It is widely believed that the Percutaneous endoscopic lumbar discectomy (PELD) is associated with minimal blood loss. However, significant perioperative hidden blood loss (HBL) is frequently unaccounted for. This study aimed to investigate HBL and peri-operative factors contributing to HBL in a series of individuals undergoing PELD. Method: ology: A total of 156 consecutive patients with a mean age of 43.6 years (ranging from 18 to 80 years) who underwent PELD at our department from May 2019 to November 2020, were included in the study. Factors including gender, age, body mass index, symptom duration, operation approach/technique, operation duration, the presence of associated chronic diseases, and improvements in the Visual Analog Scale (VAS) score, Japanese Orthopaedic Association (JOA) score and the Oswestry Disability Index (ODI) were analyzed, and Gross's formula was applied to calculate blood loss, which was used to determine HBL. Results: The average total blood loss (TBL) was 221.0 ± 126.2 mL, while the average HBL was 181.7 ± 119.0 mL (82.2 % of TBL). There was no statistically significant difference in HBL between the transverse surgical approach and the interlayer approach. Additionally, no significant differences were observed in improvements in VAS, JOA, and ODI scores between the two surgical approaches. However, the multivariate linear regression analysis revealed that longer surgical time and foraminal decompression were factors contributing to the increase in HBL, which subsequently led to the occurrence of post-operative anemia. Conclusion: HBL is significant in PELD cases with long surgical time and lumbar foraminal decompression.