Temporal trends in surgery for Crohn's disease: a ten-year single-center retrospective study.

PURPOSE: Crohn's disease (CD) is a chronic inflammatory bowel disease that requires surgery in many cases. The aim of this article is to present the experience of a referral center regarding surgical interventions for CD, while also exploring the transformations that have occurred over 10 years. METHODS: The data of patients underwent abdominal surgery for CD between 2013 and 2022 were collected prospectively. Data were compared between two periods (2013-2017 and 2018-2022). Temporal trends were assessed with the Mann-Kendall trend test. RESULTS: A total of 1059 individuals underwent 1176 surgical procedures, of which 67.1% were male. The median age of patients at the time of surgery was 36.0 years, and an overall increasing trend was observed in surgical volume (z = 3.04; p = 0.002). The proportion of patients treated with biologics increased from the first period (2013-2017) to the second (2018-2022), rising from 19.2% to 33.5% (p < 0.001). In the second stage, the proportion of patients who underwent surgery for abscesses or fistulas increased (47.8% vs. 40.0%, p = 0.028), while the percentage of emergency surgeries declined (3.0% vs. 7.1%, p = 0.001). Furthermore, there was a rise in the proportion of laparoscopic surgeries (76.5% vs. 63.7%, p < 0.001), coupled with a decrease in stoma rates (15.4% vs. 30.5%, p < 0.001) and postoperative complications (23.0% vs. 30.5%, p = 0.007). CONCLUSION: The frequency of biologics use in CD surgery have increased over time, and the proportion of penetrating patients has grown. Minimally invasive surgical methods have become the norm, and surgical outcomes have markedly enhanced, evidenced by a substantial reduction in both stoma rates and complication rates.

Laparoscopic Orthotopic Right Hemihepatectomy by Anterior Approach Combined with Inferior Vena Cava Thrombectomy.

BACKGROUND: Hepatocellular carcinoma (HCC) is a highly aggressive malignant disease with a high rate of vascular invasion. (Bruix et al. in Gastroenterology 150:835-853, 2016; Xia et al. in Oncol Lett 20:101, 2020) The conventional surgical strategy for HCC with inferior vena cava (IVC) tumor thrombus is open major surgery with cardiopulmonary bypass, combined with large trauma. (Liu et al. in Eur J Gastroenterol Hepatol 24:186-194, 2012; Bai et al. in J Oncol 2020:3264079, 2020) We report a video of laparoscopic hemihepatectomy and thrombectomy without bypass. As far as we are aware, this is the first report on IVC thrombectomy using a minimally invasive surgical technique. PATIENT: A 52-year-old male was admitted to our institution for a giant hepatic mass in the right liver combined with IVC tumor thrombosis. After 2 months of preoperative systemic treatment, the tumor had reduced to 8 cm and the enhancement of tumor thrombosis in the magnetic resonance imaging (MRI) scan was significantly reduced. METHODS: We used laparoscopy combined with thoracoscopy to perform the surgery, with the patient placed in the supine position. The abdominal trocar position is shown in Fig. 1b. First, we set the blocking band of the suprahepatic IVC in the thoracoscopy. Infrahepatic IVC occlusion and the Pringle maneuver device were prepared for laparoscopy. After fully exposing the retrohepatic IVC, we performed a thrombectomy and IVC suture completely in laparoscopy. Finally, the patient was transferred to the intensive care unit (ICU) for observation. Fig. 1 a Three-dimensional reconstruction model of the patient (a giant hepatic mass and tumor thrombosis extending to the suprahepatic IVC). b Trocar position for the laparoscopic surgery. The patient was placed in the supine position, and the 5, 6, and 7 intercostal axillary fronts were set for the thoracoscopic trocar, while the remaining five abdominal trocars were set for laparoscopic operation. c Retrohepatic IVC before being cut open. The fullness indicates the position of the tumor thrombosis. d Thrombectomy and suture of the IVC. IVC inferior vena cava, TT tumor thrombus RESULTS: Operation time was 495 mins and estimated blood loss was 1000 mL. The patient was discharged on the thirteenth day after the surgery. HCC was confirmed in histopathology. CONCLUSION: Laparoscopic hepatectomy with IVC thrombectomy is a possible operation for HCC combined with IVC tumor thrombus, offering hope for minimally invasive treatment of such cases; however, it is still a highly challenging procedure.

Compare risk factors associated with postoperative infectious complication in Crohn's disease with and without preoperative infliximab therapy: a cohort study.

PURPOSES: The incidence of postoperative complication is higher in Crohn's disease (CD) compared with other intestinal disease. There is less published data yet on the comparison of risk factors to predict postoperative complications in CD exposed and unexposed to previous infliximab therapy. Also the relationship between infliximab and postoperative infectious complications is still controversial. Our aim is to compare the risk factors to predict infectious complications in CD with and without preoperative infliximab and to clarify relationship between infliximab and infectious complications. METHODS: This retrospective study included 390 patients from June 2014 to June 2018. Postoperative complications were compared in patients with and without preoperative infliximab. Univariate and multivariable analyses were performed to identify risk factors. RESULTS: Eighty-five patients received infliximab within 8 weeks of surgery. A total of 129 patients had postoperative complications, with 35 receiving infliximab. No significant differences of whole postoperative complications were found in CD with and without infliximab (p = 0.073). However, patients receiving infliximab suffered more infectious complications (p = 0.010). Preoperative infliximab was confirmed to be an independent risk factor in infectious complications (p = 0.042). Multivariate analysis suggested that increased erythrocyte sedimentation rate (ESR) was an independent risk factor for infectious complications in patients receiving preoperative infliximab (p = 0.022), and increased C-reactive protein was an independent risk factor in patients not receiving preoperative infliximab (p = 0.019). CONCLUSIONS: Preoperative use of infliximab ≤ 8 weeks was independently associated with infectious complications in CD. Risk factors were different in predicting postoperative complications in CD with and without infliximab, and preoperative ESR and C-reactive protein were risk factors, respectively.

Prevalence and predictors of surgical site infections after bowel resection for Crohn's disease: the role of dual-ring wound protector.

PURPOSE: Surgical site infections (SSIs) have become a leading cause of preventable morbidity and mortality in surgery. The aim was to evaluate the efficacy of a dual-ring wound protector to prevent the SSIs in Crohn's disease (CD) after bowel resection. METHODS: This retrospective observational study included all CD patients undergoing bowel resection at the Inflammatory Bowel Disease Center between January 2015 and June 2018 at Sir Run Run Shaw Hospital. Risk factors of SSIs were evaluated by assessing preoperative clinical characteristics and perioperative treatments in univariate and multivariate analyses. Outcomes for CD patients with and without the wound protector were compared. RESULTS: Three hundred forty-four CD patients were enrolled in this study, 121 (35.2%) patients had postoperative complications, of whom, 72 (20.9%) patients developed SSIs (12.8% patients with incisional SSI and 8.1% patients with organ/space SSI). There was a significant reduction in the incidence of incisional SSI in the wound protector group (8.1% vs 16.8%, p < 0.05). No significant differences were identified in organ/space SSI between groups with and without wound protector (6.3% vs 9.8%, p = 0.232). Incisional SSI correlated with preoperative albumin, C-reactive protein, white blood cell, age (≤ 16), penetrating disease behavior, surgical history, open surgery, stoma creation, estimated blood loss, infliximab, and wound protector (p < 0.05). Multivariate analysis identified the wound protector to be one of independent factors for preventing incisional SSIs (OR 0.357, 95% CI 0.161-0.793, p < 0.05). CONCLUSION: Among the CD patients with bowel resection, the use of a dual-ring wound protector during surgery significantly reduced the risk of incisional SSI.

Lémann Index at Diagnosis Predicts the Risk of Early Surgery in Crohn's Disease.

BACKGROUND: Identifying patients with Crohn's disease with rapid disease progress or high risk of early surgery is crucial to clinical decision making. OBJECTIVE: The aim was to evaluate the correlation between the Lémann index at diagnosis and abdominal surgery in the first year after Crohn's disease diagnosis and to find the risk factors for early surgery. DESIGN: This was a retrospective cohort study. SETTINGS: The study was conducted at a single tertiary hospital. PATIENTS: Patients diagnosed with Crohn's disease between 2013 and 2015 in our center were included. MAIN OUTCOME MEASURES: The outcome of interest was the need for an abdominal surgery within 1 year after the Lémann index evaluation at diagnosis. RESULTS: Of 212 eligible patients, 48 patients underwent abdominal surgery during follow-up. Lémann index was much higher in the surgery group (5.3 vs 2.6; p < 0.001). On tertiles of the Lémann index, the frequency of surgery grew (2.8%, 9.9%, and 55.7%; p < 0.001) as the Lémann index increased. The receiver operating characteristic curve was constructed taking into account the Lémann index for selecting patients with a high risk of surgery. Specificity, sensitivity, and area under receiver operating characteristic curve were 84.8%, 81.3%, and 0.89 of the Lémann Index at a cutoff level of 3.7. Patients with Lémann index ≥3.7 carried a higher risk of abdominal surgery (OR = 18.6; p < 0.001). Stricturing and penetrating disease were predictors for abdominal surgery, whereas antitumor necrosis factor treatment was associated with a significant reduction of surgical requirements. LIMITATIONS: This study was limited by its retrospective design. The ability of the Lémann index to predict the long-term risk of surgery was unknown. CONCLUSIONS: Lémann index at diagnosis is a reliable index to predict the risk of abdominal surgery in the first year after diagnosis of Crohn's disease. Patients with a high Lémann index might need closer follow-up or aggressive medical therapy. See Video Abstract at http://links.lww.com/DCR/A518.

Glasgow prognostic score is a practical predictive index for postoperative intra-abdominal septic complications after bowel resection in Crohn's disease patients.

PURPOSE: Postoperative intra-abdominal septic complications (IASCs) are not uncommon in patients with Crohn's disease (CD). The appropriate index to predict postoperative IASCs in these individuals remains unknown. This study investigates whether the inflammation-based Glasgow prognostic score (GPS) is predictive in the setting of postoperative IASC CD patients who underwent elective bowel resection. METHODS: A consecutive cohort of 163 CD patients who underwent elective intestinal resection from July 2012 to March 2016 was retrospectively analyzed. Patients were divided into two GPS groups, one lower and one higher. The GPS was defined by serum levels of C-reactive protein and albumin. Univariate and multivariate analyses were conducted to identify risk factors for postoperative IASCs. RESULTS: Postoperative IASCs occurred in 25 (15.3%) patients. Compared with patients in the lower GPS group, patients with a higher GPS had a higher incidence of postoperative IASCs (9.85 vs. 38.71%, P < 0.001) and experienced longer postoperative hospital stay (10.53 ± 7.00 vs. 15.71 ± 9.17, P = 0.001). Univariate and multivariate analyses revealed preoperative GPS [odds ratio (OR) 5.016, 95% confidence interval (CI) 1.134-22.193, P = 0.034] and penetrating behavior (OR 4.495, 95% CI 1.377-14.670, P = 0.013) to be independent risk factors for postoperative IASCs. CONCLUSIONS: A preoperative GPS can serve as a useful index for predicting manifestation of postoperative IASCs after bowel resection in patients with CD. Perioperative optimization is required to improve postoperative outcomes for patients with higher GPS.

Comparison of clinical outcomes between mesh-reinforced pancreatojejunostomy and pancreatogastrostomy following pancreaticoduodenectomy: a cohort study.

BACKGROUND: Postoperative complications, especially postoperative pancreatic fistulas, remain the major concern following pancreaticoduodenectomy (PD). Mesh-reinforced pancreatic anastomoses, including pancreatojejunostomy (PJ) and pancreatogastrostomy (PG), are a new effective technique in PD. This study was conducted to analyze the safety and efficacy of this new technique and to compare the results of mesh-reinforced PJ vs PG. METHODS: A total of 110 patients who underwent PD between August 2005 and January 2016 were eligible in this study. Perioperative and postoperative data of patients with a mesh-reinforced technique were analyzed. Data were also grouped according to the procedure performed: mesh-reinforced PJ and mesh-reinforced PG. RESULTS: Among patients undergoing PD with the mesh-reinforced technique, 42 had postoperative complications, and the comprehensive complication index (CCI) was 32.7 ± 2.5. Only 10% of patients had pancreatic fistula; three were grade A, six were grade B, and two were grade C. Biliary fistula occurred in only 8.2% of patients. Patients undergoing mesh-reinforced PG showed a significantly lower rate of CCI than did mesh-reinforced PJ patients (27.0 ± 2.1 vs 37.0 ± 3.9, p < 0.05). The mesh-reinforced PG was also favored over mesh-reinforced PJ because of significant differences in intra-abdominal fluid collection (5.9% vs 18.6%, p < 0.05) and delayed gastric emptying (3.9% vs 15.3%, p < 0.05). CONCLUSIONS: PD with the mesh-reinforced technique was a safe and effective method of decreasing postoperative pancreatic fistula. Compared with mesh-reinforced PJ, mesh-reinforced PG did not show significant differences in the rates of pancreatic fistula or biliary fistula. However, CCI, intra-abdominal fluid collection, and delayed gastric emptying were significantly reduced in patients with mesh-reinforced PG.

Parenteral n-3 polyunsaturated fatty acids supplementation improves postoperative recovery for patients with Crohn's disease after bowel resection: a randomized, unblinded controlled clinical trial.

BACKGROUND: The postoperative inflammatory response is associated with postoperative recovery in surgery. n-3 (ω-3) polyunsaturated fatty acids have been reported to lower inflammation. The postoperative role of parenteral n-3 polyunsaturated fatty acids supplementation on outcomes in Crohn's disease after bowel resection is unclear. OBJECTIVES: We aimed to investigate the effects of postoperative parenteral n-3 polyunsaturated fatty acids supplementation in Crohn's disease. METHODS: A prospective randomized, unblinded controlled clinical trial was conducted for patients with Crohn's disease who underwent bowel resection between May 2019 and February 2022. Postoperative complications, complete blood count, serum biochemical values, and cytokine concentrations were compared in patients with and without parenteral n-3 polyunsaturated fatty acids supplementation for 5 d postoperatively. RESULTS: There were 268 patients randomly assigned in the analysis, with 134 in the control group (a mix of long-chain and medium-chain fats at 1.0 g/kg/d) and 134 in the treatment group (long-chain, medium-chain, and n-3 polyunsaturated fats at 1.2 g/kg/d). Twenty-six did not complete the allocated treatment, and 8 patients were lost to follow-up. The intention-to-treat analysis and the per-protocol analysis showed that there were a significant reduction in overall complication rates (22.4% compared with 49.3%; P < 0.001 and 21.8% compared with 38.2%; P = 0.006) and postoperative stay (8.8 ± 4.5 d compared with 11.2 ± 6.8 d; P = 0.001 and 8.7 ± 4.0 d compared with 11.5 ± 7.3 d; P < 0.001) in patients with parenteral n-3 polyunsaturated fatty acids supplementation compared with patients in the control group. In the secondary outcomes, the mean ± standard deviation of interleukin (IL)-6 (17.11 ± 2.14 pg/mL compared with 30.50 ± 5.14 pg/mL; P = 0.014), IL-1ß (2.01 ± 0.05 pg/mL compared with 2.24 ± 0.09 pg/mL; P = 0.019), tumor necrosis factor-α (2.09 ± 0.06 pg/mL compared with 2.29 ± 0.06 pg/mL; P = 0.029), and C-reactive protein concentrations (51.3 ± 4.2 mg/L compared with 64.4 ± 5.3 mg/L; P = 0.050) on postoperative day 5 in the treatment group were much lower than those in the control group. CONCLUSIONS: Parenteral n-3 polyunsaturated fatty acids supplementation promotes postoperative recovery in patients with Crohn's disease following bowel resection, with fewer complications and reduced inflammatory cytokines. This trial was registered at clinicaltrials.gov as NCT03901937 at https://classic. CLINICALTRIALS: gov/ct2/show/NCT03901937?term=NCT03901937&cond=Crohn+Disease&draw=2&rank=1.

An observational study of the effects of ω-3 polyunsaturated fatty acid-supplemented parenteral nutrition on postoperative complications in patients with Crohn's disease.

BACKGROUND: Crohn's disease (CD) is a chronic inflammatory disease. Most patients with CD require surgery but exhibit an elevated incidence of postoperative complications. Omega-3 polyunsaturated fatty acids (ω-3 PUFAs) are considered beneficial for nutrition, anti-inflammation, immunity, and intestinal microflora balance in humans. This study assessed the effects of ω-3 PUFA-supplemented parenteral nutrition (PN) on postoperative complications in CD patients. METHODS: Overall, 186 CD patients undergoing bowel resection were recruited for this study. The patient data were collected from a prospectively maintained database. After surgery, 83 patients received ω-3 PUFA-supplemented PN, and 103 did not. The postoperative complications were compared between the groups. Complication risk factors were identified by univariate and multivariate analyses. RESULTS: Patients who received ω-3 PUFA-supplemented PN after surgery had lower C-reactive protein (CRP) levels on postoperative day 3 (57.2±5.3 vs. 43.5±3.9 mg/L, P=0.047) and shorter postoperative hospital stays (12.1±1.1 vs. 9.3±0.6 days, P=0.041) than those who did not. The ω-3 PUFA group exhibited significantly fewer overall complications (40.8% vs. 24.1%, P=0.016) and major complications (23.3% vs. 9.6%, P=0.014) than the control group. Postoperative complications were associated with infliximab, ω-3 PUFAs, CRP levels, operative time, and laparoscopic surgery. The multivariate regression revealed that preoperative infliximab use was a positive risk factor and postoperative ω-3 PUFA-supplemented PN was a negative risk factor for postoperative complications. CONCLUSIONS: ω-3 PUFA-supplemented PN reduced post-surgery inflammatory response of CD patients, which in turn decreased the postoperative complications and accelerated recovery.

Sarcopenia assessed by computed tomography is associated with colectomy in patients with acute severe ulcerative colitis.

BACKGROUND: Altered body composition is an important characteristic of malnutrition that may better reflect the clinical course. This study aimed to evaluate the prognostic role of sarcopenia by computed tomography (CT) on colectomy in acute severe ulcerative colitis (ASUC) during index hospitalization and follow-up. METHODS: 254 ASUC patients undergoing CT scans at admission were retrospectively included. Sarcopenia was assessed by the skeletal muscle index (SMI) with CT scans at L3, and patients with an SMI below the lowest sex-specific quartile were diagnosed with sarcopenia. Body mass index (BMI) < 18.5 kg/m2 was defined as clinical malnutrition. Univariate and multivariate analyses were performed to determine the association between sarcopenia and colectomy. RESULTS: The prevalence of sarcopenia in ASUC was 50.0%, and malnutrition was 25.2%. Among sarcopenic patients, 36.2% was malnutrition, 51.2% had normal BMI, 11.8% was overweight, and 0.8% was obese. During index hospitalization, 66.9% patients needed rescue therapy with 52.4% received medical rescue therapy and 14.6% received colectomy. During follow-up, 33.2% patients needed colectomy. Significantly more sarcopenic patients required colectomy (22.0% vs 7.1%, p = 0.001) and rescue therapy (81.9% vs 52.0%, p < 0.001) during index hospitalization and colectomy during follow-up (44.4% vs 23.7%, p = 0.001) than non-sarcopenic patients. However, BMI < 18.5 kg/m2 was not related to the clinical course. In multivariate analyses, sarcopenia remained an independent risk factor for rescue therapy and colectomy during index hospitalization and colectomy during follow-up. CONCLUSION: Sarcopenia rather than BMI was associated with clinical outcomes in ASUC and played an important role in predicting the need for colectomy.

Not by Serendipity: Rationally Designed Reversible Temperature-Responsive Circularly Polarized Luminescence Inversion by Coupling Two Scenarios of Harata-Kodaka's Rule.

Intelligent control over the handedness of circularly polarized luminescence (CPL) is of special significance in smart optoelectronics, information storage, and data encryption; however, it still remains a great challenge to rationally design a CPL material that displays reversible handedness inversion without changing the system composition. Herein, we show this comes true by coupling the two scenarios of Harata-Kodaka's rule on the same supramolecular platform of crystalline microtubes self-assembled from surfactant-cyclodextrin host-guest complexes. Upon coassembling a linear dye with its electronic transition dipole moment outside of the cavity of ß-CyD, the chirality transfer from the induced chirality of SDS in the SDS@2ß-CyD microtubes to the dye generates left-handed CPL at room temperature. Upon elevating temperature, the dye forms inclusion complex with ß-CyD, so that right-handed CPL is induced because the polar group of the dye is outside of the cavity of ß-CyD. This process is completely reversible. We envision that host-guest chemistry would be very promising in creating smart CPL inversion materials for a vast number of applications.

Postoperative Ratio of C-Reactive Protein to Albumin as a Predictive Marker in Patients with Crohn's Disease Undergoing Bowel Resection.

BACKGROUND: The ratio of C-reactive protein (CRP) to albumin (CAR) has a significant correlation with postoperative complications and acts as a predictor in patients with pancreatic cancer and colorectal cancer. However, whether the CAR can be used to predict complications in Crohn's disease (CD) patients after surgery has not yet been reported. METHODS: A total of 534 CD patients undergoing surgery between 2016 and 2020 were enrolled. The risk factors of postoperative complications were assessed by univariate and multivariate analyses. The cutoff values and the accuracy of diagnosis for the CAR and postoperative CRP levels were examined with receiver operating characteristic (ROC) curves. RESULTS: The rate of postoperative complications was 32.2%. The postoperative CAR (OR 13.200; 95% CI 6.501-26.803; P < 0.001) was a significant independent risk factor for complications. Compared with the CRP level on postoperative day 3, the CAR more accurately indicated postoperative complications in CD patients (AUC: 0.699 vs. 0.771; Youden index: 0.361 vs. 0.599). ROC curves showed that the cutoff value for the CAR was 3.25. Patients with a CAR ≥ 3.25 had more complications (P < 0.001), a longer postoperative stay (15.5 ± 0.6 d vs. 9.0 ± 0.2 d, P < 0.001), and more surgical site infections (48.2% vs. 5.7%, P < 0.001) than those with a CAR < 3.25. CONCLUSIONS: Compared to the CRP level, the CAR can more accurately predict postoperative complications and can act as a predictive marker in CD patients after surgery.

The importance of sarcopenia as a prognostic predictor of the clinical course in acute severe ulcerative colitis patients.

BACKGROUND AND AIM: Acute severe ulcerative colitis (ASUC) is a life-threatening condition that requires timely referral for therapy. Sarcopenia has been associated with clinical outcomes of inflammatory bowel disease (IBD). This study investigated the role of sarcopenia in predicting the clinical course of ASUC. METHODS: This retrospective cohort study included ASUC patients with abdominal CT scans. Univariate and multivariable regression analyses were performed to identify a practical predictive index for the clinical course of ASUC. RESULTS: Of 233 included patients, 151 had intravenous corticosteroid (IVS) failure, among whom 32 received surgery without medical rescue therapy. Fifty patients underwent colectomy after medical rescue therapy failure. Of these 82 surgical patients, 42 suffered postoperative complications. Multivariable regression analysis showed that sarcopenia remained an independent risk factor for IVS failure (OR=2.969; 95% CI, 1.547-5.701; p = 0.001), colectomy after medical rescue therapy failure (OR=3.411; 95% CI, 1.147-10.141; p = 0.027), and postoperative complications after colectomy (OR=4.157; 95% CI, 1.364-12.667; p = 0.012). During follow-up, patients with colectomy after first-line treatment had a lower comprehensive complication index and better health-related quality of life. CONCLUSION: Sarcopenia is useful in predicting the clinical course and postoperative outcomes of ASUC.

Visual recognition of ortho-xylene based on its host-guest crystalline self-assembly with α-cyclodextrin.

HYPOTHESIS: Distinguishing substituted aromatic isomers is a challenging task because of the great similarity of their physicochemical properties. Considering xylene isomers have drastically different geometrical shapes, we predict this would show great impact on the self-assembling behavior of various xylene isomer@cyclodextrin inclusion complex. EXPERIMENTS: Through host-guest crystalline self-assembly, among three isomers, only ortho-xylene is capable to form hydrogels with α-cyclodextrin. ROESY NMR, molecular simulations and circular dichroism spectra suggest that the ortho selectivity comes from the difference in the conformation of host-guest building block. The larger volume, and steric hinderance of the ortho isomer make it most possibly decrease their tendency to adopt more mobile orientations in cyclodextrin-based complex as meta and para isomers do, resulting in gel formation. FINDINGS: Herein, we report a novel, facile and environmentally-friendly protocol on the recognition of ortho benzene isomers using α-cyclodextrin through host-guest crystalline self-assembly. Visual recognition of ortho-xylene is achieved through amplifying the structural difference of xylene isomers at molecular scale into macroscopic scale. We believe this work unveils subtle rules to control macroscopic assemblies at the molecular level and highlights the potential of using macrocyclic compounds to improve the quality and reduce the energy bill for separation in petrochemical industry.

Creatinine-to-cystatin C ratio as a marker of skeletal muscle mass for predicting postoperative complications in patients undergoing gastric cancer surgery.

BACKGROUND: Gastric cancer patients usually suffer from skeletal muscle depletion. The serum creatinine/cystatin C ratio (CCR) is a new, simple tool that could serve as a biomarker of skeletal muscle mass. This study explored the ability of the preoperative CCR to predict postoperative complications in patients with gastric cancer. METHODS: A total of 309 patients with gastric cancer who were undergoing surgery were enrolled in this study. Univariate analyses were conducted to determine the potential risk factors for postoperative complications, and multivariate analyses were used to determine the independent influencing factors of postoperative complications. A receiver operating characteristic curve was conducted to identify the optimal cutoff value of the CCR. Patients were divided into two groups according to the critical value to investigate the relationship between the CCR and postoperative complications. RESULTS: Postoperative complications occurred in 87 patients. Multivariate analysis suggested that age, red blood cell level, lymphocyte count, cystatin C, CCR, and N factor were independent risk or protective factors for postoperative complications (P<0.001). The optimal cutoff value of the preoperative CCR was 7.117. Compared with the high preoperative CCR group, patients with a low preoperative CCR were more likely to have both mild complications (P<0.001) and major complications (P<0.001). CONCLUSIONS: The preoperative CCR can effectively predict postoperative complications in gastric cancer patients after surgery.

Real-World Experience with AGA Guidelines in the Management of Crohn's Disease following Ileocolonic Resection: A Retrospective Cohort Study.

BACKGROUND: Postoperative endoscopic recurrence (PER) is common in patients with Crohn's disease (CD) after surgery. The impact of the American Gastroenterological Association (AGA) guideline adherence on PER in real life remains unclear. METHODS: The postoperative management of CD patients undergoing ileocolonic resection with anastomosis from 2017 to 2018 was conducted based on the AGA guidelines. Colonoscopies were performed within one year after surgery. Clinical data and risk factors for endoscopic recurrence were analyzed focusing on postoperative pharmacological prophylaxis. RESULTS: All patients were at a high risk of postoperative recurrence according to the AGA guidelines. PER occurred in 29 (28.7%) of these patients. The overall PER rate was 39.2% at one year. The PER rate in patients treated with nitroimidazole, thiopurines, infliximab, or a combination of thiopurines and infliximab for postoperative prophylaxis was 88.1%, 34.1%, 20.5%, and 0%, respectively. Cox regression showed that smoking at the time of surgery and AGA guideline adherence were independent factors associated with PER (HR: 3.75, 95% CI: 1.36-10.33, P = 0.01; HR: 0.36, 95% CI: 0.15-0.86, P = 0.02). In addition, further investigation revealed that educational background was the main factor related to patients' nonadherence to AGA guidelines. CONCLUSIONS: The majority of CD patients who undergo surgery in clinical practice may be at a high risk of disease recurrence. Thiopurines and infliximab are effective in preventing endoscopic recurrence. Guideline nonadherence is associated with PER at one year, thus indicating that there is room for improvement in adherence to the AGA guidelines.

Prognostic significance of the Controlling Nutritional Status (CONUT) score in predicting postoperative complications in patients with Crohn's disease.

Preoperative immune-nutritional status is correlated with postoperative outcomes. The Controlling Nutritional Status (CONUT) score is a useful tool for predicting the postoperative outcomes of cancer surgery. This study aimed to evaluate whether the CONUT score could predict postoperative complications in Crohn's disease (CD) patients. In total, 202 CD patients were eligible. Univariate and multivariate analyses were performed to identify risk factors for postoperative complications. Receiver operating characteristic (ROC) curves were generated to examine the cutoff value for predictors of postoperative complications. Among all the patients, 66 developed postoperative complications. The cut-off value of the CONUT score was 3.5 for complications. Eighty-one patients had a low CONUT score (< 3.5), and 121 patients had a high CONUT score (> 3.5). There was a significant difference in postoperative complications between the groups with low and high CONUT score (17.3% vs. 43.0%, p < 0.001). Patients with high CONUT score had low body mass index (BMI), more mild postoperative complications (p = 0.001) and a longer postoperative stay (p = 0.002). Postoperative complications were correlated with BMI, preoperative albumin, the preoperative CONUT score, and preoperative infliximab use. Then, the preoperative CONUT score was an independent risk factor for complications (OR 3.507, 95% CI 1.522-8.079, p = 0.003). ROC analysis showed that the CONUT score was a better predictor of postoperative complications in CD patients than albumin and the prognostic nutritional index. Thus, a preoperative CONUT score cut-off value of more than 3.5 could help to identify patients with a high possibility of malnutrition and postoperative complications.

Preoperative hypoalbuminemia is an independent risk factor for postoperative complications in Crohn's disease patients with normal BMI: A cohort study.

BACKGROUND: Malnutrition is universal in Crohn's disease (CD). The body mass index (BMI) is used to assess nutritional status to predict postoperative complications in CD patients. However, some CD patients have a normal BMI. The aim of this study was to evaluate risk factors for postoperative complications in CD patients with normal preoperative BMI values. METHODS: This retrospective observational study included 315 CD patients who underwent surgical treatment between December 2012 and January 2020. Patient data were collected from a prospectively maintained database. The risk factors for postoperative complications in CD patients with normal BMI values were identified by univariate and multivariate analyses. RESULTS: In total, 315 eligible patients were included. The incidence of postoperative complications was 30.8%, consisting of 22.5% mild complications and 18.4% major complications. The albumin level, the C-reactive protein level, laparoscopic surgery, and operative time were significantly associated with postoperative outcomes. Multivariate analysis showed that a low preoperative albumin level (P = 0.013, OR = 2.991, 95% CI: 1.255-7.131) was an independent risk factor for postoperative complications in CD patients with normal BMI values. CONCLUSIONS: A low preoperative albumin level was a risk factor for postoperative complications in CD patients with normal BMI values. Although some patients have a normal BMI, clinicians should still consider the preoperative albumin level in CD patients to evaluate their nutritional status and provide timely intervention to reduce the risk of postoperative complications.

Assessment of Patients' Future Outlook after Bowel Resection in Crohn's Disease.

BACKGROUND: Many patients with Crohn's disease (CD) require surgery in their life. Their future outlook is crucial to psychological and mental health after surgery. This study is aimed at assessing CD patient's outlook after experiencing bowel resection and determining factors associated with patient's outlook. METHODS: We used an ad hoc questionnaire (modified WHOQOL-BREF) to assess patients' outlook for the future after bowel resection in CD. All patients who experienced bowel resection for CD from 2015 to 2017 were included in this study. Patients were divided into two groups according to the questionnaire. Patients who had a positive outlook were compared with those who had a negative outlook. The patients' view on timing of surgery was also recorded. RESULTS: Of 114 eligible patients surveyed, 103 (90.4%) responded. 65 (63.1%) reported that the timing of surgery was appropriate, and 26 patients felt it should have been performed earlier, while remaining 12 preferred a later surgery. 61 (59.2%) patients had a positive outlook of their future lives, while 42 patients had a negative outlook. Factors as the financial burden, employment status, patients' view on timing of surgery, and clinical recurrence were associated with patients' outlook. In the multivariate analysis, only clinical recurrence was an independent risk factor for patient's future outlook. CONCLUSION: From this survey, it is clear that most patients who underwent an elective bowel resection for CD are satisfied with their timing of surgery. Patients who have clinical recurrence carry a significant negative outlook for their future life. Postoperative management which focuses on preventing clinical recurrence may enhance patients' outlook for the future.

Lower clearance of sodium tanshinone IIA sulfonate in coronary heart disease patients and the effect of total bilirubin: a population pharmacokinetics analysis.

This study developed a population pharmacokinetic model for sodium tanshinone IIA sulfonate (STS) in healthy volunteers and coronary heart disease (CHD) patients in order to identify significant covariates for the pharmacokinetics of STS. Blood samples were obtained by intense sampling approach from 10 healthy volunteers and sparse sampling from 25 CHD patients, and a population pharmacokinetic analysis was performed by nonlinear mixed-effect modeling. The final model was evaluated by bootstrap and visual predictive check. A total of 230 plasma concentrations were included, 137 from healthy volunteers and 93 from CHD patients. It was a two-compartment model with first-order elimination. The typical value of the apparent clearance (CL) of STS in CHD patients with total bilirubin (TBIL) level of 10 µmol(L-1 was 48.7 L(h-1 with inter individual variability of 27.4%, whereas that in healthy volunteers with the same TBIL level was 63.1 L(h-1. Residual variability was described by a proportional error model and estimated at 5.2%. The CL of STS in CHD patients was lower than that in healthy volunteers and decreased when TBIL levels increased. The bootstrap and visual predictive check confirmed the stability and validity of the final model. These results suggested that STS dosage adjustment might be considered based on TBIL levels in CHD patients.