Postoperative Infection Research Articles

Effectiveness analysis of a pharmacist-led intervention for orthopedic perioperative use of antibiotics: a retrospective cohort study.

Following the Chinese guidelines' recommendation to completely cancel routine cephalosporin skin tests, the choice of cephalosporin as surgical prophylactic medication was affected. This was due to the limited cognition of the predictive value of cephalosporin skin test or the desire to avoid medical disputes. The aim of this retrospective study was to evaluate whether the pharmacist-led perioperative antibiotic prophylaxis model could improve clinicians' medical behavior in choosing cephalosporin antibiotics for surgical prophylaxis. From July 2021 to May 2022, a retrospective analysis was conducted on the selection of surgical preventive medication, skin test, postoperative infection and adverse drug reactions in foot and ankle surgery. The study was divided into three period: the rountine cephalosporin skin test period (Period I: Skin Test), the period when the routine cephalosporin skin test was cancelled but the pharmacist did not intervene (Period II: Cancel Skin Test), and the period when the pharmacist-led perioperative antibiotic prophylaxis was implemented after the cancellation of the cephalosporin skin test (Period III: Pharmacist Intervention). A total of 1,583 patients were enrolled in this study. There was no significant difference in the utilization rate of cefuroxime between the routine skin test stage and the skin test cancelled stage [74.92% (Period I) vs. 74.54% (Period II), P > 0.05]. However, in the pharmacist intervention stage, the usage rate of cefuroxime significantly increased compared to the initial stage when the skin test was cancelled [87.07% (Period III) vs. 74.54% (Period II), P < 0.05]. The use of cephalosporins also increased in patients with self-reported beta-lactam allergies between these stages [41.94% (Period III) vs. 3.22% (Period II), P < 0.05)]. There was no significant difference in the incidence of postoperative infection and adverse drug reactions among the three periods. The pharmacist-led perioperative antibiotic prophylaxis model can significantly improve the medical behavior of clinicians in choosing cephalosporin antibiotics as surgical prophylactic medication and optimize the perioperative medication plan.

Relative Factor Analysis of Postoperative Complications in Infants Below 1 Year Undergoing Repair of Ventricular Septal Defect Combined with Other Procedures through a Right Axillary Incision

Background: Compared to the traditional surgical repair of isolated ventricular septal defects, the proportion of complex congenital heart diseases has been increasing due to advancements in diagnostic capabilities and surgical techniques. Concomitant surgeries to correct multiple congenital heart diseases have become the preferred choice. Therefore, the evaluation of the safety of the combined correction of ventricular septal defects with other cardiac anomalies in young children through a right axillary incision and the analysis of related factors of perioperative complications needs to be investigated. Methods: A retrospective study was conducted on a single-center patient sample from January 2018 to December 2022 to compare outcomes between infants undergoing isolated ventricular septal defect (VSD) repair via a right axillary thoracotomy (control group) and those undergoing VSD repair combined with other cardiac procedures (experimental group). Results: A total of 397 eligible infants were included. After baseline data were matched using propensity score matching, the experimental group (n = 181) and the control group (n = 107) showed no significant differences in intraoperative blood loss, postoperative total drainage, length of hospital stay, duration of ICU monitoring, Vasoactive-Inotropic Score (VIS), pre-discharge left ventricular ejection fraction, fractional shortening (FS), postoperative severe pulmonary infection, reoperation, mortality, postoperative atrioventricular block, chylothorax, cardiac arrest, pericardial effusion, pneumothorax, pulmonary atelectasis, tricuspid regurgitation, myocardial injury, abdominal effusion, and metabolic acidosis. However, the control group had shorter surgical time [28.00 (90.00, 196.00) vs. 140.00 (95.00, 658.00) min, p &lt; 0.05], shorter cardiopulmonary bypass time [58.00 (24.00, 114.00) vs. 66.00 (33.00, 422.00) min, p &lt; 0.05], shorter aortic cross-clamp time [32.00 (17.00, 62.00) vs. 37.00 (15.00, 142.00) min, p &lt; 0.05], and shorter postoperative mechanical ventilation time [22.00 (0, 99.00) vs. 23.00 (3.00, 193.00) h, p &lt; 0.05]. The rate of abdominal effusion was lower in the experimental group than in the control group (p = 0.044). In the analysis of postoperative complication-related factors, the preoperative grade of tricuspid regurgitation, postoperative mechanical ventilation time, and VIS were positively correlated with abdominal effusion and satisfied the variable (p &lt; 0.05) in each of three established models. In the single-factor analysis, both VIS and preoperative lymphocyte count were (p &lt; 0.1) related to pericardial effusion; however, in the multi-factor analysis, only VIS met the threshold (p &lt; 0.05). Gender, height, and VIS were each associated with pleural effusion (p &lt; 0.05). Conclusion: The combination of ventricular septal defect repair with other cardiac procedures via a right axillary thoracotomy did not significantly differ from isolated VSD repair in terms of postoperative complications, monitoring, and length of hospital stay. However, increased surgical complexity was associated with longer surgical and mechanical ventilation times. Factors such as tricuspid regurgitation severity, duration of postoperative mechanical ventilation, and VIS were identified as relative factors for postoperative effusion. Additionally, the risk of postoperative pericardial effusion increased with higher VIS, while gender, height, and VIS were identified as relative factors for postoperative chylothorax.

Risk factors for surgical site infection after general surgery in HIV-infected patients: a retrospective study

BackgroundAs the number of HIV-infected patients increased, the number of patients requiring general surgery has subsequently increased. However, impairment of immune function due to HIV infection increases the risk of postoperative surgical-site infection and significant harm to patient health. This study aimed to examine the risk factors for surgical-site infection after general surgery.MethodsThe patients’ data were from Zunyi fourth hospital medical information system. Machine learning based Boruta algorithm were used for variable screening. Univariable and multivariable logistic regression and restricted cubic spline analysis were performed to examine the relationship between significant variables and surgical-site infection.ResultsA total of 125 general surgery postoperative HIV-infected patients participated in the study. Surgical-site pathogen culture identified Escherichia coli, Klebsiella pneumoniae, and mixed bacteria as the three most common pathogens causing Surgical-site infection. Univariable and multivariable logistic regression analysis to adjust for risk factors identified type III surgical incision (OR = 9.92, 95% CI = 1.28–76.75) and elevated preoperative white blood cell (WBC) count (OR = 1.30, 95% CI = 1.12–1.51) as independent risk factors for postoperative surgical-site infection, whereas CD4 + T lymphocyte count greater than 400 cells/µL was identified as a protective factor (OR = 0.23, 95% CI = 0.09–0.60) while. The restricted cubic spline analysis results directly reflected the dose-response relationship between continuous variables and postoperative surgical-site infection.ConclusionsType III incision and an elevated WBC count pose a higher risk of postoperative surgical-site infection. A CD4 + T lymphocyte counts greater than 400 cells/µL provided a protective effect of lower risk of surgical site infection. Preoperative serum neutrophil percentage, albumin level, red blood cell count, and serum urea level within a specific range were beneficial in reducing the risk of incisional infections. Our research provides a theoretical basis for clinical practice.

Reduction Mammaplasty

Background While there is mounting evidence that closed suction drains are not necessary, there is a paucity of literature to demonstrate that drains are harmful after breast reduction. The purpose of this study was to investigate the effect of drains on postoperative seroma, hematoma, and infection, as well as elucidate any risk factors that may be implicated in the development of these complications. Methods A retrospective cohort study was conducted of all reduction mammaplasty procedures at our university medical center between 2010–2020. Pedicle type, skin incision, drain utilization, breast excision mass, sternal notch to nipple distance, and inframammary fold to nipple distance were analyzed with postoperative outcomes including hematoma, seroma, infection, dehiscence, nipple necrosis, and fat necrosis. Results This study included 944 female patients undergoing reduction mammaplasty. Median age was 39.0 years, median body mass index was 31.9 kg/m2, and median breast mass resected was 742 grams per side. Drain utilization did not significantly reduce postoperative hematoma (P = 0.196), seroma (P = 0.185), nipple necrosis (P = 0.511), or fat necrosis (P = 0.113), but drain utilization significantly increased postoperative surgical site infection (P = 0.011). Patients with breast mass removed over 1500 g had significantly higher risk of hematoma (P = 0.002), fat necrosis (P &lt; 0.001), and nipple necrosis (P &lt; 0.001) compared to patients with less than 1500 g removed. In patients with greater than 1500 g resected, drain utilization did not significantly decrease risk of hematoma (P = 0.086) or seroma (P = 0.497). Conclusions Breast reduction greater than 1500 g per side significantly increased risk of hematoma, nipple necrosis, and fat necrosis. Drain utilization did not demonstrate any advantageous effects, rather it increased risk of infection. Future multicenter study will be needed to confirm these findings across different patient referral networks and practice patterns.

Nutritional status of patients with gastrointestinal cancers and analysis of factors for postoperative infections

BackgroundPatients with gastrointestinal cancer have a higher risk of malnutrition and postoperative infection.ObjectiveTo investigate the nutritional status of patients with gastrointestinal cancers and factors for postoperative infections.MethodBased on the nutritional risk status, 294 patients with gastrointestinal tumours were divided into a nutritional risk group and a non-nutritional risk group, and the differences between the two groups were compared.ResultsAmong the included patients, 128 were at preoperative nutritional risk (43.54%); there were significant differences between the two groups in terms of age (66.25 ± 11.73 vs. 58.36 ± 10.41 years, P < 0.001), percentage of gastric cancers (39.84% vs. 28.92%, P = 0.049), percentage of stage IV tumours (60.16% vs. 45.18%, P = 0.011), total protein (64.90 ± 6.82 vs. 67.21 ± 7.41 g/L, P = 0.007), albumin (38.32 ± 4.74 vs. 41.61 ± 5.10 g/L, P < 0.001) and haemoglobin (112.72 ± 22.63 vs. 125.11 ± 22.79 g/L, P < 0.001). Multivariate logistic regression analysis showed that risk factors for postoperative infections in patients included age ≥ 60 years (odds ratio [OR] = 2.266 95%CI = 1.357–4.134), Nutrition Risk Screening (NRS)-2002 score ≥ 3 (OR = 2.183, 95%CI = 1.218–4.102), alcohol history (OR = 2.505, 95%CI = 1.370–4.683), comorbid diabetes mellitus (OR = 2.110, 95%CI = 1.381–4.023) and surgical time ≥ 6 h (OR = 2.446, 95%CI = 1.359–4.758).ConclusionPatients with gastrointestinal cancers are at high incidence of preoperative nutritional risk, and those with an NRS-2002 score of > 3, history of alcohol consumption and surgical time of > 6 h have a higher risk of postoperative infections.

Post-Operative Urinary Tract Infections After Radical Cystectomy: Incidence, Pathogens, and Risk Factors.

Background: The incidence of urinary tract infections (UTIs) after radical cystectomy (RC) with urinary diversion (UD), the typical pathogens, and associated patient risk factors have not been well documented. In this study, we examined the incidence of post-op UTIs after RC to identify associated risk factors. Methods: Single-center, retrospective case series of 386 patients with bladder cancer who underwent RC with UD between 2012 and 2024. The primary objective was UTI incidence, defined by the frequency of patients with urine culture with >105 colony-forming units per high-powered field, spanning from post-op day 0 (POD0) to 90 days after discharge. Isolated pathogens were reported. Risk factors for UTIs were assessed. Results: The average age was 69 years old at surgery, and patients were predominantly male (80%). The cumulative incidence of post-op UTIs was 14%, among which 12 patients had more than one UTI. The UTI incidence was 2%, 8%, and 7% during the immediate post-op period, within 30 days, and within 31-90 days, respectively. Isolated pathogens included Escherichia coli (26%), Enterococcus faecalis (24%), Klebsiella pneumoniae (21%), and Pseudomonas species (21%). In the immediate post-op period, female sex was the only significant risk factor. At 31 to 90 days, cutaneous ureterostomy UD was the predominant risk factor for UTIs. For ileal conduit patients, those with a Wallace ureteral anastomosis were associated with UTI 31-90 days from discharge for RC. Conclusions: Our retrospective data suggests the incidence of UTIs and their causative pathogens after RC differ based on post-operative time points and vary according to different patient risk factors.

Management of the Inflatable Penile Prosthesis Reservoir at time of revision surgery: remove, retain, or recycle?

Three common strategies exist for managing the inflatable penile prosthesis reservoir during revision surgery: the original reservoir can be (a) removed, (b) deactivated and left in situ, sometimes referred to as "drain and retain" (DR), or (c) validated and reconnected to new cylinders, which we have termed "reservoir recycling" (RR). To compare the efficacy and safety of the RR approach to penile prosthesis revision against DR and the recommended approach of complete device removal and replacement. A retrospective chart review of our single-surgeon inflatable penile prosthesis database between 2007 and 2022 was performed, identifying revision surgeries. Cases were stratified by reservoir management technique. Patients who had undergone at least 1 follow-up visit and had complete documentation regarding reservoir handling were included. Reservoir-related complications necessitating surgical intervention such as infection and device failure were compared between the 3 groups using a chi-square test. Mean follow-up duration, time to revision, and operative time were also assessed. The primary outcome was theincidence of reservoir-related complications requiring surgical intervention and secondary outcomes included time to revision surgery and operative time. Among 140 patients meeting inclusion criteria, 62 underwent full reservoir replacement (FR), 48 DR, and 30 RR. Compared to FR, DR and RR groups had similar mean time to revision and intraoperative time. Follow-up duration was similarly limited for all 3 groups at a median of approximately 4.5months. There were no postoperative infections in the RR cohort. However, when compared to the DR and FR groups, this did not reach significance (P = .398). There was no difference in mechanical failure rate between the 3 groups (P = .059). Nonmechanical failure was also similar between all 3 groups (P = .165). These results suggest that RR exhibits comparable outcomes to DR and FR, making it a viable option during select penile prosthesis revision surgeries, potentially decreasing morbidity without compromising outcomes. This is the first study to evaluate outcomes after RR. Limitations include small sample size, limited follow-up, and single-surgeon experience. There was no difference in reservoir-related complications when comparing the 3 methods. These preliminary results suggest that reservoir recycling may provide a safe and effective reservoir-handling alternative in inflatable penile prosthesis revision surgery.

Are Drains Associated With Infection After Operative Fixation of High-Risk Tibial Plateau and Pilon Fractures?

To determine the association between closed suction drainage and postoperative infection in patients with tibial plateau or pilon fractures. Secondarily, this study assessed if intrawound vancomycin powder modified the association of closed surgical drains with infection. Design: Secondary analysis of the Effect of Intrawound Vancomycin Powder in Operatively Treated High-risk Tibia Fractures: A Randomized Clinical Trial (VANCO) trial. 36 academic trauma centers. All patients with high-risk tibia fractures (OTA/AO classification 41B/C or 43B/C) from the VANCO trial were considered. Closed suction drains were placed based on the treating surgeon's discretion. Patients were randomly assigned to received 1-gram intrawound vancomycin powder in the surgical wound at definitive fixation or the standard infection prevention protocol at each center.Outcome Measures and Comparisons: Deep surgical site infection (SSI) within 6 months. Comparisons were made between patients treated with and without drains. Subgroup analysis also examined the effect of drains in patients with and without intrawound vancomycin powder. Of the 978 study patients, 197 (20%) were treated with drains. Deep infection rates did not significantly differ between patients with or without surgical drains (8% versus 8%, p=0.88). However, intrawound vancomycin powder significantly modified the association of surgical drains on deep SSI (interaction p=0.048). Specifically, patients with drains but no vancomycin powder had the highest deep infection rate (13%; 95% CI, 6% to 19%). When vancomycin powder was used in addition to a drain, deep SSI rates were reduced by 10% (95% CI, 2% to 17%, p=0.01). This study suggests that closed suction drains after operative fixation of high-risk tibia fractures may not be associated with deep infection in general. However, a secondary analysis raises the possibility that drains are associated with reduced deep infection rates if topical vancomycin powder is used but associated with increased infection rates if vancomycin powder is not used. Level III.

Risk factors and predictive model development for high blood loss in minimally invasive distal pancreatectomy: a retrospective cohort study.

High blood loss is an adverse event related to increased morbidity and poorer outcomes in pancreatic surgery patients. The aim of this study was to identify risk factors and establish a predictive model for high perioperative blood loss (HPBL) in minimally invasive distal pancreatectomy (MIDP). We collected data from 353 patients who underwent MIDP at a university affiliated tertiary hospital between January 2016 and October 2023. Perioperative blood loss was calculated based on pre- and postoperative hemoglobin concentrations according to a combination of the formulas provided by Nadler and Gross. Multivariate logistic regression analyses were performed for the training cohort to identify the clinical factors independently associated with perioperative blood loss (PBL). A predictive nomogram based on these factors was established and validated. Weight, imaging findings, serum albumin concentration, MIDP experience, spleen treatment, and operation time were independent predictors for HPBL. The established model for predicting HPBL showed that the area under the curve (AUC) was 0.799 (95% CI = 0.746-0.853) and 0.852 (95% CI = 0.760-0.943) for the training cohort and validation cohort, respectively. When utilized to predict blood transfusion, the AUC was 0.778 (95% CI = 0.691-0.865) in the training cohort and 0.818 (95% CI = 0.681-0.955) in the validation cohort. Patients with a high predicted risk had significantly higher incidences of postoperative pancreatic fistula, intra-abdominal infection, and longer hospital stays than patients with a low risk. We established and validated a model for predicting HPBL in MIDP patients. This novel model may have future utility when generating surgical strategies.

Correlation of preoperative CT features with intra- and postoperative parameters of endoscopic resection in patients with gastric submucosal tumor (1~3cm).

Endoscopic resection of gastric submucosal tumors (SMTs) possesses minimal trauma, expedited recovery, and reduced costs. Nonetheless, intraoperative challenges, including imprecise surgical risk assessment, prevail. Hence, we investigated the correlation between preoperative CT observation features and perioperative parameters for predicting outcomes in SMT patients. Subjects diagnosed with SMT and undergoing endoscopic surgery conducted at West China Hospital's Endoscopy Center from September 2019 to October 2023 were retrospectively selected. Endoscopic ultrasonography (EUS) and computer tomography (CT) were utilized for evaluating SMT. The study assessed the correlation between preoperative CT findings and perioperative parameters. Increased lesion size on contrast-enhanced CT correlates with increased operative duration, hospital stay, postoperative antibiotic use. Of utmost significance, we observed a significantly higher intraoperative perforation rate for patients with tumor outgrowth compared to those with lesion involvement of the lumen (96.88% vs 29.11%, P < 0.001). These patients also demonstrated an increased risk of postoperative blood stream infections (P = 0.012), necessitating higher antibiotic grade (P = 0.048), along with prolonged gastrostomy tube retention (P = 0.001) and hospitalization (P = 0.018). In addition, CT provides a more accurate and comprehensive assessment of tumor size (P = 0.037) and growth pattern (P = 0.026) than EUS. CT assessment of tumor size closer to reality than EUS. Importantly, these features can assist in pinpointing lesions with elevated surgical complexity and high risk of complications, leading to improved preoperative preparation, thereby increasing anticipation of surgical risks and reducing incidence of complications.

The dural attachment length predict prognosis in patients with recurrent meningiomas.

To investigate the prognostic factors of recurrent meningioma patients who underwent reoperation, so as to make relevant recommendations for the treatment. A retrospective analysis was performed on 73 patients with recurrent meningioma. Patients' clinical data were obtained from their medical records. Progression-free Survival (PFS) was defined as the interval from the date of surgery to the date of tumor recurrence, or to the date of the last imaging review. Overall survival (OS) was defined as the time from the date of surgery to death from any cause, or to the date of the last follow-up. The multivariate COX regression showed that dural attachment length (HR = 1.238, 95%CI1.011-1.516, P = 0.039) and WHO grade (HR = 2.184, 95%CI1.135-4.203, P = 0.019) were independent risk factors for tumor progression. The factors associated with survival in multivariate regression analysis were preoperative Karnofsky Performance Scale (KPS) (HR = 0.951, 95%CI0.923-0.979, P = 0.001), dural attachment length (HR = 1.520, 95%CI1.124-2.057, P = 0.007) and WHO grade (HR = 4.829, 95%CI1.891-12.331, P = 0.001). The dural attachment length (OR = 1.843, 95%CI1.236-2.748, P = 0.003) was the only risk factor associated with postoperative pulmonary infection. No correlation was observed between Simpson's grade and either PFS or OS. The dural attachment length is closely related to the prognosis of recurrent meningioma, which should be given importance during the perioperative assessment.

QOL-25. DIGITAL PHENOTYPING OF PERIOPERATIVE MOBILITY METRICS IN PATIENTS UNDERGOING SURGICAL RESECTION OF SKULL BASE TUMORS

Abstract Current methods to assess quality of life and recovery after surgery for skull base tumors are limited and often biased by subjective patient-reported assessments, while objective, in-situ assessments are lacking. Smartphone-based digital phenotyping has been increasingly studied across pathologies, utilizing built-in technologies to measure behavioral patterns pertaining to sleep, physical mobility, social interactions, and cognitive functioning, among others. Here, we report our initial experience with smartphone-based digital phenotyping in patients who underwent resection of skull base lesions. Patients seen at our multi-disciplinary skull base center were enrolled under an institutional board-approved protocol and installed the Beiwe application, which passively collected GPS data 20 days pre- and up to 140 days post-surgery. Variables measured included time spent at home, number of separate significant places visited outside home, daily walking time, and daily number of steps taken. 26 patients were enrolled, comprised of 14 pituitary adenomas, 8 meningiomas, and 4 vestibular schwannomas. All patients demonstrated increased time spent at home, fewer number of significant locations visited, decreased walking time, and decreased total steps in the immediate post-operative period. For pituitaries, mean return to baseline for these variables was 25.7, 24.3, 80.2, and 88.9 days, respectively. For meningiomas, return to baseline was 56.5, 214.4, 45.0, and 45.6 days, respectively. For vestibular schwannomas, return to baseline was 219, 39.9, 35.1, and 36.4 days, respectively. This study demonstrates initial efficacy of digital phenotyping for a cohort of patients undergoing surgical resection of skull base lesions, based on passively collected smartphone GPS data during the peri-operative period. This is part of a larger, ongoing study enrolling surgical patients as well as non-operative controls for comparison. Such peri-operative mobility metrics may potentially be refined to predict postoperative outcomes following surgery such as improvement of neurological symptoms, postoperative CSF leak, infection, dysnatremia, and hospital length of stay.

Prophylactic 24 versus 48 h cephalosporins in cardiac surgery: A randomized trial.

Recommendations for cardiac surgery advocate for antibiotic prophylaxis for up to 48 hour after surgery. However, recent reports found a significant reduction in surgical site infection with extended duration. We evaluated the effect of the type of prophylactic antibiotics and administration durations on the postoperative surgical site infection rate following cardiac surgery in adults. An investigator-initiated randomized controlled trial was conducted from 2018 to 2022 on adult patients undergoing cardiac surgery. Patients were randomized into four groups based on antibiotic treatment type and duration: 24 h cefazolin, 24 h cefuroxime, 48 h cefazolin, and 48 h cefuroxime. The primary outcome was the rate of surgical site infections within 90 days of surgery. A total of 568 patients were included in this study. The four groups had similar baseline characteristics, including age, sex, EuroSCORE II, and baseline HbA1c. A total of 75 patients developed infection within 90 days postoperative. The overall infection rate was not statistically different across the four groups (p = 0.193). The efficacy of cefazolin and cefuroxime in reducing infection was comparable (p = 0.901). Extended prophylaxis was associated with a significantly reduced overall infection rate within 90 days postoperatively compared to 24-h prophylaxis (10.2% vs. 16.3%; risk ratio = 0.62, 95% confidence interval: 0.40-0.96, p = 0.032). Using cefazolin or cefuroxime for 48 h instead of 24 h was more effective in reducing the overall surgical site infections rate up to 90 days after surgery.

Safety and aesthetic evaluation of autologous dermal fat grafts for lateral Skull base defect reconstruction

ObjectiveThe selection of appropriate materials and techniques for reconstructing skull base defects is crucial for restoring function, minimizing complications, and enhancing aesthetics. Dermal fat grafts (DFGs) have been established in many surgeries for contour correction. However, there is little literature describing the application of free dermal fat grafts for reconstruction of lateral skull base surgery defects. Therefore, the aim of this study was to evaluate the clinical effect of using free dermal fat grafts in the reconstruction of lateral skull base defects.MethodsIn this study, 32 patients who underwent primary autologous free dermal fat graft reconstruction for lateral skull base defects were enrolled. Postoperative complications both in the donor and recipient area were evaluated. Three-dimensional (3D) reconstruction techniques were applied to visualize the fat graft shape and volume variations for the assessment of postoperative restoring function. A telephone questionnaire was used for the assessment of postoperative facial aesthetics and patient satisfaction.ResultsA total of 32 patients who met the inclusion criteria were included in the study, showing satisfying results in safety and aesthetics. Participants’ ages averaged at 42.03 years, with the youngest being 18 and the oldest at 75 years old. No patient had postoperative complications of abdominal wounds in the donor area, only two patients had postoperative infections and one patient had a postoperative effusion in the recipient area. The volume of the grafts ranged from a minimum of 24.4 cm³ to a maximum of 131 cm³, with the highest recorded resorption volume being 33.63 cm³. The average resorption rate of the dermal fat graft was 24.36%, ranging from a minimum of 11% to a maximum of 43%. 3D reconstruction based on MRI imaging data indicated that DFGs have a lower resorption rate than traditional free fat grafts. The telephone questionnaire revealed high patient satisfaction with facial aesthetics, with the majority rating their outcomes positively.ConclusionsDermal fat grafts have fewer complication and can provide better resistance to infection and radiation aspect. Based on 3D reconstruction techniques via MRI imaging data, we found that dermal fat grafts have lower resorption rate than traditional free fat grafts, which can be a suitable material for reconstruction of lateral skull base defects.

Optimizing Myelomeningocele Repair: Assessing the Role of Synthetic Acellular Dermal Regeneration Templates in Complex Closures.

Myelomeningoceles threaten newborns with central nervous system infectious risk. While some myelomeningoceles can be repaired fetally, limited donor tissue in newborns makes covering a substantial defect challenging. This study evaluated the effectiveness of acellular dermal regeneration templates (ADRT) in safely healing refractory myelomeningoceles. Seven myelomeningocele repair cases using ADRT (Integra LifeSciences, Plainsboro, NJ) at an academic children's hospital from April 2020 to June 2023 were reviewed. Patients had unsuccessful closure attempts through fetoscopic, postnatal, or revision surgeries by neurosurgery and plastic surgery, leading to complications that required ADRT to protect the dural repair and promote quicker granulation. The case series included 3 male and 4 female patients, with a median delivery age of 37 weeks (IQR: 33-37). Three underwent fetoscopic repairs, and 4 had postnatal repairs within 48 hours of birth. Six patients required ADRT placement due to failed primary repair. One patient failed fetoscopic closure and required immediate ADRT placement following an emergent cesarean delivery. The median wound size covered was 12cm2 (range, 4-20cm2), and the median hospital stay was 84 days (IQR: 43-105). Three weeks post-ADRT placement, 4 patients showed healthy granulation tissue, and the external silicone layer was removed. Three patients needed additional ADRT for complete wound coverage and successful granulation. After granulation, all wounds eventually epithelialized by secondary intention, with no postoperative infection or wound dehiscence observed. ADRT can aid in wound healing and protect dural repair in myelomeningoceles, offering a viable option for complex or failed primary closures with limited donor tissue.

Does intraoperative wound irrigation with diluted povidone-iodine prevent surgical site infection in spine surgery?

This study employed meta-analysis to evaluate whether the application of intraoperative wound irrigation (IOWI) with povidone-iodine (PI) in spine surgery effectively reduces the incidence of postoperative surgical site infection (SSI). The present study was conducted strictly following the methodological guidance provided by the Cochrane Handbook. The protocol of this work was registered with PROSPERO. Two researchers independently conducted electronic searches in Medline via PubMed, Embase, Cochrane Library, and Web of Science. The bias risk of each included study was evaluated by two assessors. We performed statistical analysis on the dataset using STATA software. Fourteen studies involving a total of 6777 patients were included in the present work. The risk of bias of six included randomized controlled trials (RCTs) was considered as low-to-moderate risk, and the quality scores of the eight included retrospective cohort studies were rated as high quality. The results of this meta-analysis indicated a significant difference in the incidence of postoperative SSI between the two groups (RR = 0.29, 95% CI: (0.18, 0.47)). Moreover, patients who underwent IOWI with PI had lower rates of deep and superficial infections after spine surgery compared with the controlled group (superficial infection: RR = 0.28, 95%CI: (0.14, 0.54); Deep infection: RR = 0.24, 95%CI: (0.10, 0.60)). The sensitivity analysis results indicated good robustness and high evidence strength after data consolidation in the overall rate of postoperative SSI and the incidence of deep/superficial infection. IOWI with PI solution during spinal surgery can effectively reduce the incidence of postoperative SSI.

Patients with multiple sclerosis have higher rates of worsening following total hip arthroplasty: a propensity-matched analysis.

The progressive nature of multiple sclerosis (MS) may adversely affect outcomes following total hip arthroplasty (THA). As patient-reported outcome measures (PROMs) in this specific group are not well defined, this study aimed to compare the clinical outcomes and the rates of achieving the minimal clinically important difference for improvement (MCID-I) and worsening (MCID-W) between patients with MS and those without MS undergoing THA. We conducted a retrospective analysis of 375 THAs, including 75 MS patients and 300 propensity-matched non-MS patients (4:1), performed between 2016 and 2022. Collected PROMs included Patient-Reported Outcomes Measurement Information System (PROMIS) Global Health Mental and Physical, PROMIS Physical Function short form 10-a (PF-10a), and Hip disability and Osteoarthritis Outcome Score-Physical Function Short-form (HOOS-PS). Preoperative and postoperative PROMs and MCID-I/MCID-W rates were compared. A total of 375 THAs, including 75 MS and 300 matched non-MS patients, were analysed. MS patients had higher 90-day postoperative complication rates (9.3% vs. 2.3%, p = 0.012) and infection rates (4.0% vs. 0.3%, p = 0.006). The rates of achieving MCID-I and MCID-W were similar for PROMIS Global Mental, PROMIS Global Physical, and HOOS-PS, but MS patients had a higher rate of experiencing MCID-W for PROMIS PF-10a compared to non-MS patients (16.7% vs. 6.5%, p = 0.022). Additionally, MS patients had a longer mean hospital stay (2.4 vs. 1.9 days, p = 0.005) and lower rates of being discharged home (82.7% vs. 94.3%, p < 0.001). The present study found that MS patients experience similar rates of MCID-I and MCID-W in most PROMs but have a higher rate of MCID-W for PROMIS PF-10a and increased postoperative complications. These findings highlight the need for careful consideration of postoperative risks despite potential improvements. Further research is needed to explore the impact of MS progression on PROMs and perioperative outcomes.

The Impact of Smoking on Sacrocolpopexy Perioperative Outcomes: An Observational Study.

Tobacco smoke is a modifiable risk factor that surgeons discuss with patients prior to undergoing sacrocolpopexy or mesh revision surgery. The aim of the study was to investigate the effect of smoking on perioperative outcomes after sacrocolpopexy for pelvic organ prolapse and mesh revision repair. This was a retrospective cohort study of data obtained from the National Surgical Quality Improvement Project's database. Women who underwent surgery for pelvic organ prolapse via abdominal sacrocolpopexy (ASCP) or minimally invasive sacrocolpopexy (MISCP) or prolapse mesh revision surgery from 2011 to 2021 were identified and compared based on current tobacco use. Demographic, medical, and surgical history, as well as intraoperative and 30-day perioperative outcomes, were compared. Multivariate analysis was performed. Overall, 21,980 women underwent MISCP (8.60% smokers) and 3,775 underwent ASCP (8.74% smokers). Postoperative wound infections were more common after sacrocolpopexy in patients who smoked. Readmission after MISCP was more common in smokers. The composite perioperative morbidity score was different between smokers and nonsmokers for MISCP (P = 0.001) and ASCP (P = 0.002). Multivariate analyses of MISCP outcomes found an association between smoking and wound infection, readmission, and composite score. Multivariate analyses of ASCP outcomes found an association between smoking and wound infection. Overall 2,160 patients underwent mesh removal by any modality (16.57% smokers), and no difference in perioperative outcomes between smokers and nonsmokers for mesh removal was found. An association was found between tobacco smoking and wound infection as well as other postoperative complications. Tobacco use prior to a mesh excision procedure does not appear to increase perioperative outcomes.

Outcome of Triple Negative Breast Cancer(TNBC) as compared to other breast cancers in Bir Hospital, National Academy of Medical Sciences

Introduction: In Nepal, breast cancer is the second most common cancer accounting for a large number of deaths.The subtype Triple-negative breast cancer (TNBC) is linked to poor prognosis and is characterized by the absence of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor-2 (HER2). This study describes the outcome of women with TNBC as compared to other breast cancers in Bir Hospital in Nepal. Methods: This was a cross-sectional study conducted in Bir Hospital, National Academy of Medical Sciences. The breast cancer data in Department of Surgery and Department of Oncology were collected from July 2021 to June 2024. The study data on demographic details, clinical findings, radiological and pathological investigations, operative procedures, neoadjuvant/adjuvant therapy, surgical and oncological outcomeswere collected. The study approval was taken from Institutional Review Board of National Academy of Medical Sciences. Results: There were 72 breast cancer patientsout of which 10 (13.8 %) were TNBC. Majority of the cases (70%) underwent modified radical mastectomy and 60% of them had received neoadjuvant therapy in TNBC cases. One out of 10 had positive margin post mastectomy. The proportion of TNBC patients with postoperative wound infection, seroma and flap necrosis were 10% each. The mean lymph node positivity was less in TNBC group as compared to other breast cancers.There was one recurrence, one metastasis and no mortality till one year follow up. Conclusion: The surgical outcome was satisfactory and with neo-adjuvant, surgery and adjuvant therapy, there is less tumor recurrence and satisfactory disease free survival and overall survival.

Preliminary Experience Using Axolotl (Ambystoma mexicanum) Dermis Patches as a Biologic Agent for Wound Management After Neurosurgical Procedures

In the US, chronic wounds affect more than 6.5 million people annually-a mean cost of $23,755 among neurosurgery patients. Current wound management solutions have disadvantages, including rejection, disease transmission from mammalian-sources, and cultural issues prohibiting some products. Here, we describe preliminary use of xenograft tissue derived from axolotl (Ambystoma mexicanum) dermis for use in wound management after neurosurgical procedures. Our prospective database was retrospectively searched for consecutive patients who underwent wound closures using axolotl dermis patches (NeoMatriX, NeXtGen Biologics, Alachua, FL). Patient demographics, daily alcohol and tobacco use, radiation history, operation type, and antibiotic regimens post-closure were collected. Rates of postoperative infection, wound dehiscence, and wound revision or repeated irrigation were collected for outcomes assessment. Twenty-three patients underwent wound closure with the patches. At least one comorbidity related to delayed wound closure was present in included patients: obesity=8(34.8%), diabetes=3(13%), chronic obstructive pulmonary disease=3(13%), hypertension=11(47.8%), hyperlipidemia=10(43.5%), hypothyroidism=3(13%), benign prostatic hyperplasia=3(13%), HIV=1(4.3%), cancer=7(30.4%), daily alcohol use=4(17.4%), and current smoking=7(30.4%). Wounds treated were from decompressive laminectomy, microvascular decompression, thoracolumbar instrumentation revision, and pseudoaneurysm ligation/resection in 1(4.3%) patient each. Three (13%) patients had wounds from aneurysm clippings, 6(26.1%) each from craniotomies and wound dehiscence treatments, and 4(17.4%) from cranioplasties. Patches were applied for primary wound closure in 14(60.9%) patients and secondary wound closure in 9(39.1%) patients. Post-application wound infection or wound dehiscence and/or revision occurred in 2(8.7%) patients. Axolotl dermis patches support mammalian wound management, demonstrating favorable potential in improving neurosurgical wound closure and healing and overall outcomes.