Higher Risk Of Major Complications Research Articles

Martius Labial Fat Pad Use in the Treatment of Complications Associated With Prior Surgery for Urinary Incontinence or Pelvic Organ Prolapse

ObjectiveTo evaluate the outcomes of Martius Labial Fat Pad (MLFP) in the treatment of complications related to surgery for urinary incontinence (UI) and/or pelvic organ prolapse (POP) and to assess the influence of mesh presence. MethodsFollowing institutional review board approval (n° STU 2023 1280), a review of all women who underwent a MLFP procedure at our tertiary center after UI and/or POP repair was performed by an independent investigator. The primary outcome was the rate of post-operative complications classified according to the Clavien-Dindo classification. Secondary outcomes were based on indications and functional results. A subgroup analysis was performed according to the type of prior repair: mesh or native tissue repair. ResultsFrom 2006-2022, 26 patients underwent a MLFP procedure, with a median follow-up duration of 30 (12-67.5) months. Bladder outlet obstruction and fistulae were the two most frequent indications. Post-operative complications occurred in 15 patients (58%): grade I in 6 (43%), grade 2 in 3 (21%), grade 3b in 4 (29%) and grade 4b in 1 (7%). Four of the grade ≥ 3 complications occurred in the mesh group. Median operative time was longer in the mesh group: 200 minutes (177.5-229.5) versus 146 minutes (128-190) (p=0.03) and the success rate was lower: 61% versus 85% (p=0.06). Overall, surgery was successful in 19 patients (73.8%). ConclusionMFLP is a reliable flap in specialized indications after UI and/or POP repair procedures with a higher risk of major complications and a lower success rate in women previously operated with mesh.

Influence of body fat tissue on outcomes in patients undergoing hepatectomy or liver transplantation.

The purpose of this study is to investigate potential associations between body fat composition and postoperative outcomes in patients with hepatectomy or liver transplantation. Three online databases, including Embase, PubMed, and the Cochrane Library, were thoroughly searched for literature describing the relationship between body fat composition and outcomes of patients with liver surgery from the start of each database to October 29, 2023. The Newcastle-Ottawa Scale was used to rate the quality of the studies. This analysis included a total of 29 articles with a combined patient cohort of 6,435 individuals. The results demonstrated that patients with high intramuscular fat content (IMFC) had significantly inferior OS (HR: 2.07, 95% CI: 1.69-2.53, P < 0.001) and RFS (HR: 1.61, 95% CI: 1.20-2.16, P = 0.002) and a higher risk of major complications (HR: 2.20, 95% CI: 1.59-3.05, P < 0.001). We also found that the presence of high visceral-to-subcutaneous fat tissue ratio (VSR) in patients with liver surgery was significantly related to poorer OS (HR: 1.70, 95% CI: 1.44-2.00, P < 0.001) and PFS (HR: 1.29, 95% CI: 1.11-1.50, P = 0.001) and a higher major complication rate (HR: 2.31, 95% CI: 1.17-4.56, P = 0.016). Besides, the synthesized findings indicated there is no significant correlation between visceral fat tissue and survival outcomes or postoperative complications. In summary, preoperative IMFC and VSR have the potential to forecast poorer OS and RFS and a higher risk of complications for patients undergoing hepatectomy or liver transplantation.

Association of carotid endarterectomy at low-volume centers with higher likelihood of major complications and nonroutine discharge.

Carotid artery stenosis (CAS) is associated with an annual stroke risk of 2%-5%, and revascularization with carotid endarterectomy (CEA) can reduce this risk. While studies have demonstrated that hospital CEA volume is associated with mortality and myocardial infarction, CEA volume cutoffs in studies are relatively arbitrary, and no specific analyses on broad complications and discharge disposition have been performed. In this study, the authors systematically set out to identify a cutoff at which CEA procedural volume was significantly associated with major complications and nonroutine discharge. Asymptomatic and symptomatic CAS patients undergoing CEA were retrospectively identified in the Nationwide Readmissions Database (2010-2018). The association of CEA volume with outcomes was explored as a continuous variable using locally estimated scatterplot smoothing. The identified volume cutoff was used to generate dichotomous volume cohorts, and multivariate analyses of patient and hospital characteristics were conducted to evaluate the association of CEA volume with major complications and discharge disposition. Between 2010 and 2018, 308,933 asymptomatic and 32,877 symptomatic patients underwent CEA. Analysis of CEA volume with outcomes as a continuous variable demonstrated that an increase in volume was associated with a lower risk until a volume of approximately 7 cases per year (20th percentile). A total of 6702 (2.2%) asymptomatic and 1040 (3.2%) symptomatic patients were treated at the bottom 20% of hospital procedure volume. Increased rates of complications were seen at low-volume centers among asymptomatic (3.66% vs 2.77%) and symptomatic (7.4% vs 6.87%) patients. Asymptomatic patients treated at low-volume centers had an increased likelihood of major complications (OR 1.26, 95% CI 1.07-1.49; p = 0.007) and nonroutine discharge (OR 1.36, 95% CI 1.24-1.50; p < 0.0001). Symptomatic patients treated at low-volume centers were also more likely to experience major complications (OR 1.47, 95% CI 1.07-2.02; p = 0.02) and nonroutine discharge (OR 1.26, 95% CI 1.07-1.47; p = 0.005). Mortality rates were similar between low- and high-volume hospitals among asymptomatic (0.36% and 0.32%, respectively) and symptomatic (1.06% and 1.49%, respectively) patients, while volume was not significantly associated with mortality among asymptomatic (OR 1.06, 95% CI 0.67-1.65; p = 0.81) and symptomatic (OR 0.81, 95% CI 0.43-1.54; p = 0.52) patients in multivariate analysis. CEA patients, asymptomatic or symptomatic, are at a higher risk of major complications and nonroutine discharge at low-volume centers. Analysis of CEA as a continuous variable demonstrated a cutoff at 7 cases per year, and further study may identify factors associated with improved outcome at the lowest-volume centers.

Complications and outcomes of total hip arthroplasty in dogs with luxoid hip dysplasia: 18 cases (2010-2022).

To describe the complications and outcomes in dogs with luxoid hip dysplasia (LH) undergoing total hip arthroplasty (THA) and compare complication rates with THA in non-LH dogs. Retrospective study. Client-owned dogs (n = 217) undergoing primary THA (n = 238). Medical records (2010-2022) of dogs undergoing THA were reviewed, and LH was defined as complete dorsal displacement of the femoral head from the acetabulum on lateral projection radiographs. Major or catastrophic complications, revisions, and outcomes were recorded for all dogs and they were compared between LH and non-LH groups. Eighteen cases met the subcriterion for the LH group and 220 cases met the subcriterion for inclusion in the non-LH group. There were 14 complications in 13/18 dogs with LH; seven were intraoperative (femoral fissure/fracture) and seven were postoperative (dorsal luxation, n = 5; femoral fracture, n = 1; acetabular cup septic loosening, n = 1). Revisions were performed for all LH dogs that encountered complications; satisfactory outcomes were achieved in 12/13 dogs. Overall, LH dogs had a higher risk of developing complications (p < .001), including intraoperative fracture (p < .001) and postoperative dorsal luxation (p = .019) when compared with non-LH dogs. Luxoid hip dysplasia was associated with a higher risk of major complications following THA in dogs, specifically intraoperative fissure/fracture and postoperative dorsal luxation. Despite the increased risk, revisions typically yielded satisfactory outcomes. Luxoid hip dysplasia is an important risk factor for the development of major complications in dogs undergoing THA.

Sarcopenia impacts perioperative and survival outcomes after esophagectomy for cancer: a multicenter study

BackgroundThe impact of sarcopenia on outcomes after esophagectomy is controversial. Most data are currently derived from Asian populations. This study aimed to correlate sarcopenia to short-term perioperative complication rates and long-term survival and recurrence outcomes. MethodsA retrospective analysis was performed of patients undergoing esophagectomy for cancer from 3 tertiary referral centers in Australia. Sarcopenia was defined using cutoffs for skeletal muscle index (SMI), assessed on preoperative computed tomography images. Outcomes measured included complications, overall survival (OS), and disease-free survival (DFS). ResultsOf 462 patients (78.4% male; median age, 67 years), sarcopenia was evident in 276 (59.7%). Patients with sarcopenia had a higher rate of major (Clavien-Dindo ≥ 3b) complications (27.9% vs 14.5%; P < .001), including higher rates of postoperative cardiac arrythmia (16.3% vs 9.7%; P = .042), pneumonia requiring antibiotics (14.5% vs 9.1%; P = .008), and 30-day mortality (5.1% vs 0%; P = .002). In the sarcopenic group, the median OS was lower (37 months [95% CI, 27.1–46.9] vs 114 months [95% CI, 75.8–152.2]; P < .001), as was the median DFS (27 months [95% CI, 18.9–35.1] vs 77 months [95% CI, 36.4–117.6]; P < .001). Sarcopenia was an independent risk factor for lower survival on multivariate analysis (hazard ratio, 1.688; 95% CI, 1.223–2.329; P = .001). ConclusionPatients with preoperative sarcopenia based on analysis of SMI are at a higher risk of major complications and have inferior survival and oncologic outcomes after esophagectomy for esophageal cancer.

Risk Factor Analysis for Developing Major Complications Following Esophageal Surgery-A Two-Center Study.

Esophagectomy carries a high risk of morbidity and mortality compared to other major surgeries. With the aim of creating an easy-to-use clinical preoperative risk assessment tool and to validate previously described risk factors for major complications following surgery, esophagectomies at two tertiary medical centers were analyzed. A total of 450 patients who underwent esophagectomy for esophageal carcinoma at the University Medical Centre, Hamburg, or at the Medical Center University Duisburg-Essen, Germany (January 2008 to January 2020) were retrospectively analyzed. Epidemiological and perioperative data were analyzed to identify the risk factors that impact major complication rates. The primary endpoint of this study was to determine the incidence of major complications. The mean age of the patients was 63 years with a bimodal distribution. There was a male predominance across the cohort (81% vs. 19%, respectively). Alcohol abuse (p = 0.0341), chronic obstructive pulmonary disease (p = 0.0264), and cardiac comorbidity (p = 0.0367) were associated with a significantly higher risk of major complications in the multivariate analysis. Neoadjuvant chemotherapy significantly reduced the risk of major postoperative complications (p < 0.0001). Various patient-related risk factors increased the rate of major complications following esophagectomy. Patient-tailored prehabilitation programs before esophagectomy that focus on minimizing these risk factors may lead to better surgical outcomes and should be analyzed in further studies.

Impact of congestive heart failure on patients undergoing lumbar spine fusion for adult spine deformity.

With the increasing amount of elective spine fusion patients presenting with cardiac disease and congestive heart failure, it is becoming difficult to assess when it is safe to proceed with surgery. Assessing the severity of heart failure (HF) through ejection fraction may provide insight into patients' short- and long-term risks. The purpose of this study was to assess the severity of HF on perioperative outcomes of spine fusion surgery patients. This was a retrospective cohort study of the PearlDiver database. We enrolled 670,526 patients undergoing spine fusion surgery. Thirty-day and 90-day complication rates, discharge destination, length of stay (LOS), physician reimbursement, and hospital costs. Patients undergoing elective spine fusion surgery were isolated and stratified by preoperative HF with preserved ejection fraction (P-EF) or reduced ejection fraction (R-EF) (International Classification of Diseases-9: 428.32 [chronic diastolic HF] and 428.22 [chronic systolic HF]). Means comparison tests (Chi-squared and independent samples t-tests, as appropriate) compared differences in demographics, diagnoses, comorbidities, procedural characteristics, LOS, 30-day and 90-day complication outcomes, and total hospital charges between those diagnosed with P-EF and those not R-EF. Binary logistic regression assessed the odds of complication associated with HF, controlling for levels fused (odds ratio [OR] [95% confidence interval]). Statistical significance was set at P < 0.05. Totally 670,526 elective spine fusion patients were included. Four thousand and seventy-seven were diagnosed with P-EF and 2758 R-EF. Overall, P-EF patients presented with higher rates of morbid obesity, chronic kidney disease, chronic obstructive pulmonary disease, diabetes mellitus, and hypertension (all P < 0.001). In relation to No-HF, P-EF patients had higher rates of 30-day major complications including pulmonary embolism, pneumonia, cerebrovascular accident (CVA), myocardial infarctions (MI), sepsis, and death (all P < 0.001). Furthermore, P-EF was associated significantly with increased odds of pneumonia (OR: 2.07 [1.64-2.56], P < 0.001) and sepsis (OR: 2.09 [1.62-2.66], P < 0.001). Relative to No-HF, R-EF was associated with significantly higher odds of MI (OR: 3.66 [2.34-5.47]), CVA (OR: 2.70 [1.67-4.15]), and pneumonia (OR: 1.85 [1.40-2.40]) (all P < 0.001) postoperative within 30 days. Adjusting for prior history of MI, CAD, and the presence of a pacemaker R-EF was a significant predictor of an MI 30 days postoperatively (OR: 2.2 [1.14-4.32], P = 0.021). Further adjusting for history of CABG or stent placement, R-EF was associated with higher odds of CVA (OR: 2.11 [1.09-4.19], P = 0.028) and MI (OR: 2.27 [1.20-4.43], P = 0.013). When evaluating the severity of HF before spine surgery, R-EF was associated with a higher risk of major complications, especially the occurrence of a myocardial infarction 30 days postoperatively. During preoperative risk assessment, congestive HF should be considered thoroughly when thinking of postoperative outcomes with emphasis on R-EF.

Arthroscopic-assisted Tibiotalocalcaneal Arthrodesis Using a Hindfoot Nail for Treatment of Ankle Fractures in Medically Complex Patients: A Technique Guide and Retrospective Case Series

Treatment of ankle fractures in patients with severe medical comorbidities poses a significant challenge, as these patients are at high risk for major complications, including infection and amputation. Tibiotalocalcaneal arthrodesis (TTCA) is gaining popularity for the surgical treatment of ankle fractures in these medically complex patients. This is traditionally performed with open joint preparation or no joint preparation, both of which have associated postoperative complications. We present our technique for arthroscopic-assisted TTCA and provide a retrospective case series of 4 patients undergoing this technique and their outcomes. Our study showed that arthroscopically-assisted joint preparation for TTCA for ankle fractures in patients with severe medical comorbidities shows promise considering 100% limb salvage rate, successful fusion, and restoration of ambulatory status. Complications were minimal requiring only one return to the operating room for symptomatic aseptic loosening of an interlocking screw. Because this is done in a minimally invasive approach, it may be the preferred technique more widely used in the future to decrease the rate of infection and increase the rate of fusion, especially in medically complex patients. Level of Evidence: Level IV, retrospective case series.

Circulating metabolic markers after surgery identify patients at risk for severe postoperative complications: a prospective cohort study in colorectal cancer.

Early detection of postoperative complications after colorectal cancer (CRC) surgery is associated with improved outcomes. The aim was to investigate early metabolomics signatures capable to detect patients at risk for severe postoperative complications after CRC surgery. Prospective cohort study of patients undergoing CRC surgery from 2015 to 2018. Plasma samples were collected before and after surgery, and analyzed by mass spectrometry obtaining 188 metabolites and 21 ratios. Postoperative complications were registered with Clavien-Dindo Classification and Comprehensive Complication Index. One hundred forty-six patients were included. Surgery substantially modified metabolome and metabolic changes after surgery were quantitatively associated with the severity of postoperative complications. The strongest positive relationship with both Clavien-Dindo and Comprehensive Complication Index (β=4.09 and 63.05, P <0.001) corresponded to kynurenine/tryptophan, against an inverse relationship with lysophosphatidylcholines (LPCs) and phosphatidylcholines (PCs). Patients with LPC18:2/PCa36:2 below the cut-off 0.084µM/µM resulted in a sevenfold higher risk of major complications (OR=7.38, 95% CI: 2.82-21.25, P <0.001), while kynurenine/tryptophan above 0.067µM/µM a ninefold (OR=9.35, 95% CI: 3.03-32.66, P <0.001). Hexadecanoylcarnitine below 0.093µM displayed a 12-fold higher risk of anastomotic leakage-related complications (OR=11.99, 95% CI: 2.62-80.79, P =0.004). Surgery-induced phospholipids and amino acid dysregulation is associated with the severity of postoperative complications after CRC surgery, including anastomotic leakage-related outcomes. The authors provide quantitative insight on metabolic markers, measuring vulnerability to postoperative morbidity that might help guide early decision-making and improve surgical outcomes.

Effect of hydroalcoholic extract of Trigonella foenum-graecum leaves on wound healing in type 1 diabetic rats.

Diabetes describes a group of metabolic disorders characterised by increased blood glucose concentration. People living with diabetes have a higher risk of morbidity and mortality than the general population. In 2015 it was estimated that there were 415 million (uncertainty interval: 340-536 million) people with diabetes aged 20-79 years, and 5.0 million deaths attributable to diabetes. When diabetic patients develop an ulcer, they become at high risk for major complications, including infection and amputation. The pathophysiologic relationship between diabetes and impaired healing is complex. Vascular, neuropathic, immune function, and biochemical abnormalities each contribute to the altered tissue repair. The use of herbal medicine has increased and attracted the attention of many researchers all over the world. In this study, we have evaluated the effect of 500mg/kg hydroalcoholic extract of Trigonella foenum-graecum leaves (TFG-E) on wound healing in diabetic rats using a full-thickness cutaneous incisional wound model. Wounds of treated animals showed better tensiometric indices, accelerated wound contraction, faster re-epithelialisation, improved neovascularisation, better modulation of fibroblasts and macrophage presence in the wound bed and moderate collagen formation.

Association of Neighborhood Disadvantage with Short- and Long-Term Outcomes After Pancreatectomy for Pancreatic Ductal Adenocarcinoma.

While lower socioeconomic status has been shown to correlate with worse outcomes in cancer care, data correlating neighborhood-level metrics with outcomes are scarce. We aim to explore the association between neighborhood disadvantage and both short- and long-term postoperative outcomes in patients undergoing pancreatectomy for pancreatic ductal adenocarcinoma (PDAC). We retrospectively analyzed 243 patients who underwent resection for PDAC at a single institution between 1 January 2010 and 15 September 2021. To measure neighborhood disadvantage, the cohort was divided into tertiles by Area Deprivation Index (ADI). Short-term outcomes of interest were minor complications, major complications, unplanned readmission within 30 days, prolonged hospitalization, and delayed gastric emptying (DGE). The long-term outcome of interest was overall survival. Logistic regression was used to test short-term outcomes; Cox proportional hazards models and Kaplan-Meier method were used for long-term outcomes. The median ADI of the cohort was 49 (IQR 32-64.5). On adjusted analysis, the high-ADI group demonstrated greater odds of suffering a major complication (odds ratio [OR], 2.78; 95% confidence interval [CI], 1.26-6.40; p = 0.01) and of an unplanned readmission (OR, 3.09; 95% CI, 1.16-9.28; p = 0.03) compared with the low-ADI group. There were no significant differences between groups in the odds of minor complications, prolonged hospitalization, or DGE (all p > 0.05). High ADI did not confer an increased hazard of death (p = 0.63). We found that worse neighborhood disadvantage is associated with a higher risk of major complication and unplanned readmission after pancreatectomy for PDAC.

Lung volume reduction for emphysema using one-way endobronchial valves: An Australian cohort.

Emphysema can be associated with gas trapping and hyperinflation, which negatively impacts on quality of life, life expectancy, and functional capacity. Lung volume reduction (LVR) surgery can reduce gas trapping and improve mortality in select patients but carries a high risk of major complications. Bronchoscopic techniques for LVR using one-way endobronchial valves (EBV) have become an established efficacious alternative to surgery. A bi-center retrospective cohort study was conducted on patients with severe emphysema who underwent endoscopic lung volume reduction (ELVR) using Pulmonx Zephyr EBVs. Symptomatic patients with gas-trapping and hyperinflation on lung function testing were selected. Target-lobe selection was based on quantitative imaging analysis and ventilation-perfusion scintigraphy. Successful procedures were determined from clinical review, imaging and follow-up testing. Thirty-nine patients underwent ELVR. Mean pre-procedure forced expiratory volume in 1 second (FEV1) was 0.75 L, residual volume (RV) was 225% predicted and total lung capacity was 129% predicted. Most common treated-lobe was left upper lobe. Post-procedure pneumothorax occurred in 36.5% of patients with 73% requiring intercostal catheter insertion for drainage. Mean FEV1 improvement was +140 mL and 57% of patients achieved minimal clinical important difference FEV1 increase of ≥12%. Maximal mean RV change was -1010 mL with 69% of patients achieving minimal clinical important difference RV decrease of ≥350 mL. Clinician-determined success of ELVR was 78%. Procedure-related mortality was absent. LVR using EBVs is safe and can lead to significant improvements in lung function, particularly reduction of gas trapping and hyperinflation. Occurrence of pneumothorax post-procedure is a complication that must be monitored for and managed appropriately.

Procedure Matters in Gender-Associated Outcomes following Metabolic-Bariatric Surgery: Five Year North American Matched Cohort Analysis.

Eighty percent of patients who undergo metabolic-bariatric surgery self-identify as female. It is unclear why there is a disparate use of metabolic-bariatric surgery by men compared to women given the widely accepted safety of weight loss surgical procedures. One possible explanation is that post-operative outcomes of metabolic-bariatric surgery have been shown to be worse for men compared to women in prior studies. The purpose of this study was to characterize the impact of gender on outcomes of metabolic-bariatric surgery using the most recent MBSAQIP data registry from 2017-2021. Data entered into the MBSAQIP registry from 2017-2021 for patients who underwent primary metabolic-bariatric surgery procedures was identified. The data wasthen matched for multiple pre-operative factors and comorbidities, and outcomes were assessed and compared for men and women. No significant difference was observed in anastomotic leak, wound complications, and bleeding between men and women. However, men were at 0.15% (p < 0.01) higher risk of major complications (encompassing unplanned ICU admission, deep organ space infection, unplanned intubation, bleeding, anastomotic leak, sepsis, pneumonia, myocardial infarction, cardiac arrest, cerebrovascular accident, pulmonary embolism, reoperation, and death) compared to women. While men had higher major complications compared to women for SG, there was no significant difference between the two cohorts for RYGB, BPD and LAGB. While there are some differences in outcomes between male and female patients, the difference is modest. Male gender should not be considered a high-risk factor for all bariatric procedures and cannot explain the difference in utilization of metabolic-bariatric surgery by men compared to women.

Two-Level Corpectomy and Fusion vs. Three-Level Anterior Cervical Discectomy and Fusion without Plating: Long-Term Clinical and Radiological Outcomes in a Multicentric Retrospective Analysis.

Anterior cervical discectomy and fusion (ACDF) and anterior cervical corpectomy and fusion (ACCF) represent effective alternatives in the management of multilevel cervical spondylotic myelopathy (CSM). A consensus on which of these techniques should be used is still missing. The databases of three centers were reviewed (January 2011-December 2018) for patients with three-level CSM, who underwent three-level ACDF without plating or two-level ACCF with expandable cage (VBRC) or mesh (VBRM). Demographic data, surgical strategy, complications, and implant failure were analyzed. The Neck Disability Index (NDI), the Visual Analog Scale (VAS), and the cervical lordosis were compared between the two techniques at 3 and 12 months. Logistic regression analyses investigated independent factors influencing clinical and radiological outcomes. Twenty-one and twenty-two patients were included in the ACDF and ACCF groups, respectively. The median follow-up was 18 months. ACDFs were associated with better clinical outcomes at 12 months (NDI: 8.3% vs. 19.3%, p < 0.001; VAS: 1.3 vs. 2.6, p = 0.004), but with an increased risk of loss of lordosis correction ≥ 1° (OR = 4.5; p = 0.05). A higher complication rate in the ACDF group (33.3% vs. 9.1%; p = 0.05) was recorded, but it negatively influenced only short-term clinical outcomes. ACCFs with VBRC were associated with a higher risk of major complications but ensured better 12-month lordosis correction (p = 0.002). No significant differences in intraoperative blood loss were noted. Three-level ACDF without plating was associated with better clinical outcomes than two-level ACCF despite worse losses in lordosis correction, which is ideal for fragile patients without retrovertebral compressions. In multilevel CSM, the relationship between the degree of lordosis correction and clinical outcome advantages still needs to be investigated.

A novel model for predicting a composite outcome of major complications after valve surgery.

On-pump valve surgeries are associated with high morbidity and mortality. The present study aimed to reliably predict a composite outcome of postoperative complications using a minimum of easily accessible clinical parameters. A total of 7,441 patients who underwent valve surgery were retrospectively analyzed. Data for 6,220 patients at West China Hospital of Sichuan University were used to develop a predictive model, which was validated using data from 1,221 patients at the Second Affiliated Hospital of Zhejiang University School of Medicine. The primary outcome was a composite of major complications: all-cause death in hospital, stroke, myocardial infarction, and severe acute kidney injury. The predictive model was constructed using the least absolute shrinkage and selection operator as well as multivariable logistic regression. The model was assessed in terms of the areas under receiver operating characteristic curves, calibration, and decision curve analysis. The primary outcome occurred in 129 patients (2.1%) in the development cohort and 71 (5.8%) in the validation cohort. Six variables were retained in the predictive model: New York Heart Association class, diabetes, glucose, blood urea nitrogen, operation time, and red blood cell transfusion during surgery. The C-statistics were 0.735 (95% CI, 0.686-0.784) in the development cohort and 0.761 (95% CI, 0.694-0.828) in the validation cohort. For both cohorts, calibration plots showed good agreement between predicted and actual observations, and ecision curve analysis showed clinical usefulness. In contrast, the well-established SinoSCORE did not accurately predict the primary outcome in either cohort. This predictive nomogram based on six easily accessible variables may serve as an "early warning" system to identify patients at high risk of major complications after valve surgery. [www.ClinicalTrials.gov], identifier [NCT04476134].

D73. Multidisciplinary Approach to Cranioplasty - Outcomes from a 10-year Retrospective Study

PURPOSE: Cranioplasty to reconstruct large-sized skull defect has a high risk of major complications, including 15- 30% reoperation rate. The objective of this study was to determine whether multidisciplinary surgical approach at a tertiary care institution impacted cranioplasty outcomes. METHODS: We performed a retrospective chart review of patients undergoing cranioplasty from 2011- 2021. Pertinent demographic and surgical data were extracted. Risk factors associated with cranioplasty failure were assessed using chi-square and t-tests. Logistical regression was used to assess odds ratio between number of cranial operations and team involved. RESULTS: A total of 255 patients underwent 301 cranioplasty procedures. Fifty-three patients (20%) had a major complication requiring reoperation, with the most common complications being infection (n = 31, 12%), hematoma (n=11, 4%) and dehiscence (n= 7, 3%). Cases were performed by either a neurosurgeon only (n=248), neurosurgeon plus otolaryngologist (n=23), neurosurgeon plus plastic surgeon (n=30), or all three types of surgeons together (n=1). Plastic surgeons were more likely to be involved in cases with multiple previous cranial operations, including cranioplasty failures (p=0.0205). Interestingly, cases with a plastic surgeon involved (n=30) were associated with fewer complications postoperatively (n=3, 10%, p=0.0302). CONCLUSION: Plastic surgeons are typically consulted after multiple previous cranioplasty failures, despite decreased risk of complications when one is involved. This data further underscores the need for 1) continued efforts to develop neuroplastic surgery multidisciplinary centers for cranioplasty, and 2) a validated, algorithmic approach to predict complications in cranioplasty and risk stratify patients who may benefit from earlier plastic surgery involvement.

Overall morbidity after total minimally invasive keyhole oesophagectomy versus hybrid oesophagectomy (the MICkey trial): study protocol for a multicentre randomized controlled trial

BackgroundOesophageal cancer (EC) is the sixth leading cause of cancer death worldwide. Oesophageal resection is the only curative treatment option for EC which is frequently performed via an abdominal and right thoracic approach (Ivor-Lewis operation). This 2-cavity operation is associated with a high risk of major complications. To reduce postoperative morbidity, several minimally invasive techniques have been developed that can be broadly classified into either hybrid oesophagectomy (HYBRID-E) via laparoscopic/robotic abdominal and open thoracic surgery or total minimally invasive oesophagectomy (MIN-E). Both, HYBIRD-E and MIN-E, compare favourable to open oesophagectomy. However, there is still an evidence gap comparing HYBRID-E with MIN-E with regard to postoperative morbidity.MethodsThe MICkey trial is a multicentre randomized controlled superiority trial with two parallel study groups. A total of 152 patients with oesophageal cancer scheduled for elective oesophagectomy will be randomly assigned 1:1 to the control group (HYBRID-E) or to the intervention group (MIN-E). The primary endpoint will be overall postoperative morbidity assessed via the comprehensive complication index (CCI) within 30 days after surgery. Specific perioperative parameters, as well as patient-reported and oncological outcomes, will be analysed as secondary outcomes.DiscussionThe MICkey trial will address the yet unanswered question whether the total minimally invasive oesophagectomy (MIN-E) is superior to the HYBRID-E procedure regarding overall postoperative morbidity.Trial registrationDRKS00027927 U1111-1277-0214. Registered on 4th July 2022

Obese elderly patients with hip fractures may have better survival outcomes after surgery

BackgroundIn recent years, there has been an increasing amount of research on the “obesity paradox”. So our primary objective was to explore whether this phenomenon exists in our study, and secondary objective was to determine the effect of body mass index (BMI) on major complications, and the incidence of acute kidney injury (AKI) after hip fracture surgery after controlling for confounding factors.MethodsWe included patients over 70 years old with hip fracture who were admitted to the Department of Orthopedics, Peking University First Hospital between 2015 and 2021. Patients were classified as underweight (UW, < 18.5 kg/m2), normal weight (NW, 18.5–24.9 kg/m2), overweight (OW, 25.0–29.9 kg/m2) and obese (OB, ≥ 30.0 kg/m2). We analyzed demographic characteristics, operation information and postoperative outcomes. Using multivariate regression with normal-weight patients as the reference, we determined the odds of 1-year mortality, major complications, and AKI by BMI category.ResultsA total of 644 patients were included. Nine percent of patients died after 1 year, 18% had major postoperative complications, and 12% had AKI. There was a U-shaped relationship between BMI and the rates of major complications or AKI. However, there was a linear decreasing relationship between 1-year mortality and BMI. After controlling for confounding factors, multivariate regression analysis showed that the risk of 1-year mortality after surgery was 2.24 times higher in underweight patients than in normal-weight patients (P < 0.05, OR: 2.24, 95% CI 1.14–4.42). Compared with normal-weight patients, underweight patients had a 2.07 times increased risk of major complications (P < 0.05, OR 2.07, 95% CI 1.21–3.55), and the risk of major complications in obese patients was 2.57 times higher than that in normal-weight patients (P < 0.05, OR 2.57, 95% CI 1.09–6.09). Compared with normal-weight, underweight patients had a 2.18 times increased risk of AKI (P < 0.05, OR 2.18, 95% CI 1.17–4.05).ConclusionsThe 1-year mortality risk of patients with higher BMI was significantly reduced. Besides, compared with normal-weight patients, underweight patients and obese patients have a higher risk of major complications; low-weight and obese patients are at higher risk for AKI.

Interfacility Transfer Patients With Pelvic, Acetabular, and Lower Extremity Fractures Are at Higher Risk for Major Complications and Readmissions.

To compare the adverse event profile and patient comorbidity profile of lower extremity orthopaedic trauma patients admitted via interfacility transfer (IT) to direct admission (DA) patients from home. A total of 39,497 patients from 2012 to 2019 were identified in the American College of Surgeon National Surgical Quality Improvement Program database. DA patients were compared with IT patients for differences in preoperative comorbidities, adverse events, length of stay, and readmissions in the 30-day postoperative period. Student t tests were used to assess continuous variables. Pearson χ 2 test and odds ratios (ORs) were used for categorical variables. The IT group comprised 7167 patients, and the DA group comprised 32,330 patients. IT patients were on average older (65.5 vs. 58.8 years, P < 0.01), more likely to be American Society of Anesthesiologists Status >2 ( P < 0.01), and had a worse comorbidity profile for numerous preoperative risk factors. IT patients had significantly higher rates of mortality [3.3% vs. 1.4%; odds ratio (OR) 2.29; 95% confidence interval (CI), 1.96-2.77], major complications (10.2% vs. 6.1%; OR 1.74; 95% CI, 1.60-1.91), significantly higher readmission rates (5.8% vs. 4.8%, P < 0.01, OR 1.22 95% CI, 1.09-1.36), and more infectious complications (7% vs. 4.7%; OR 1.54; 95% CI, 1.38-1.71) than DA patients. Transfer remained a significant factor predicting major adverse events in regression analysis controlling for patient characteristics and fracture type ( P < 0.01; B 1.197; 95% CI, 1.09-1.32). This study revealed that IT patients undergoing operative management of pelvic, acetabular, and lower extremity fractures are at a significantly increased risk of major complications, readmission, and have a higher morbidity burden than DA patients. As healthcare transitions to value-based care and bundled payments, hospitals that accept a high volume of ITs will face exposure to added risk and financial penalties without adequate policy protections. Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

Outcomes and Risk Factors in Microsurgical Forefoot Reconstruction.

Defects at the forefoot frequently require microsurgical reconstruction; however, reconstructive failure can lead to results inferior to primary amputation. The purpose of this study was to identify independent factors affecting surgical outcomes and hospitalization time in these patients. All patients that underwent free flap reconstruction of the forefoot between 2008 and 2019 were reviewed retrospectively. Statistical evaluation included binary logistic regression and correlation analysis. A total of 93 free flap procedures were performed in 87 patients. The most common defect etiologies were acute trauma (30 cases; 32.3%), diabetic foot syndrome (20 cases; 21.5%), and infection (17 cases; 18.3%). Muscle flaps were used in 50 cases (53.8%) and fasciocutaneous flaps were used in 43 cases (46.2%). Major complications occurred in 24 cases (25.8%) including 11 total flap losses and 2 partial flap losses. Minor complications occurred in 38 cases (40.9%). Patients aged 60 years or above were at significant higher risk of major complications (p = 0.029). Use of fasciocutaneous flaps (odds ratio [OR]: 14.341; p = 0.005), arterial hypertension (OR: 18.801; p = 0.014), and operative time (min) (OR: 1.010; p = 0.029) were identified as individual risk factors for major complications. Two venous anastomoses significantly reduced the risk of major complications (OR: 0.078; p = 0.022). Multiresistant bacterial wound colonization (OR: 65.152; p < 0.001) and defect size (OR: 1.007; p = 0.045) were identified as independent risk factors for minor complications. The median hospital stay was 28 days (7-85 days). Age significantly correlated with the length of hospital stay (r = 0.405, p < 0.01). Our study identified independent risk factors that might help to make individual decisions whether to target microsurgical forefoot reconstruction or primary amputation. Two venous anastomoses should be performed whenever feasible, and muscle free flaps should be preferred in patients at higher risk of major surgical complications.