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Demirpolat MT, İslam MM. Development and Validation of the GAASThyriC Model for Predicting Patients with Suboptimal Clinical Response After Laparoscopic Sleeve Gastrectomy and a Practical Calculator: A Retrospective Cohort Study. Surg Laparosc Endosc Percutan Tech 2024:00129689-990000000-00242. [PMID: 38898798 DOI: 10.1097/sle.0000000000001300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024]
Abstract
BACKGROUND It might not be possible to achieve the desired outcome in every patient following bariatric surgery, even though every patient is thoroughly examined before surgery. This study aimed to develop a regression model based on parameters that affect weight loss success in patients scheduled for laparoscopic sleeve gastrectomy (LSG) and thus preoperatively predict whether the patients will have an optimal clinical response in terms of weight loss at the end of the first year. MATERIALS AND METHODS Between January 2018 and August 2022, patients who underwent LSG were analyzed retrospectively. Age, sex, comorbidities, smoking status, alcohol use status, preoperative weight, preoperative body mass index (BMI), preoperative laboratory data, weight, and total weight loss (TWL)% values at the end of the first year were recorded. At the end of the first year following LSG, patients with TWL% above 20% were defined as having an optimal clinical response in terms of weight loss. This study is designed, conducted, and reported regarding the "transparent reporting of a multivariable prediction model for individual prognosis or diagnosis" (TRIPOD) statement. The final model was used to construct an Excel-based calculator. RESULTS Four hundred thirty-eight patients underwent the sleeve gastrectomy procedure, and 38 of them were excluded from the study because of a lack of 1-year follow-up information, resulting in 400 eligible patients for our study. Age, glucose, thyroid stimulating hormone (TSH), alcohol consumption, systemic immune inflammation index (SII), and tobacco were the independent predictors of optimal clinical response (P<0.001, P<0.001, P<0.001, P=0.011, P=0.039, P=0.045, respectively). The model was called the GAASThyriC score. When the final model was tested in the validation cohort, the AUC was 0.875 (95% CI, 0.742-0.999), the sensitivity was 83.3% (95% CI, 51.6-97.9), specificity was 86.4% (95% CI, 77.4-92.8), negative likelihood ratio was 0.19 (95% CI, 0.05-0.68), and accuracy was 86% (95% CI, 77.6-92.1) when the cutoff value was set to the optimal threshold (logit = 0.8451). CONCLUSION The GAASThyriC score can be used as an effective auxiliary tool to predict the patient population with suboptimal clinical response in terms of TWL% at the end of the first year after LSG.
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Affiliation(s)
| | - Mehmet Muzaffer İslam
- Department of Emergency Medicine, University of Health Sciences, Umraniye Education and Research Hospital, Istanbul, Turkey
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Chen G, Li Z, Wang L, Wuyun Q, Sang Q, Wang J, Wang Z, Tian C, Yu C, Amin B, Zhang N, Fan Q. Analysis of correlation between BMI and TWL% outcome following metabolic and bariatric surgery: a retrospective study using restricted cubic spline. BMC Surg 2024; 24:178. [PMID: 38849774 PMCID: PMC11157919 DOI: 10.1186/s12893-024-02455-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 05/16/2024] [Indexed: 06/09/2024] Open
Abstract
OBJECTIVE This study aimed to examine the correlation between preoperative body mass index (BMI) and adequate percentage of total weight loss (TWL%) outcome and present evidence of tiered treatment for patients with obesity in different preoperative BMI. METHODS We included patients with complete follow-up data who underwent metabolic and bariatric surgery (BMS). We termed optimal clinical response as TWL% >20% at one year following MBS. To investigate dose-response association between preoperative BMI and optimal clinical response, preoperative BMI was analyzed in three ways: (1) as quartiles; (2) per 2.5 kg/m2 units (3) using RCS, with 3 knots as recommended. RESULTS A total of 291 patients with obesity were included in our study. The corresponding quartile odds ratios associated with optimal clinical response and adjusted for potential confounders were 1.00 (reference), 1.434 [95% confidence interval (95%CI) = 0.589-3.495], 4.926 (95%CI = 1.538-15.772), and 2.084 (95%CI = 0.941-1.005), respectively. RCS analysis showed a non-linear inverted U-shaped association between preoperative BMI and optimal clinical response (Nonlinear P = 0.009). In spline analysis, when preoperative BMI was no less than 42.9 kg/m2, the possibility of optimal clinical response raised as preoperative BMI increased. When preoperative BMI was greater than 42.9 kg/m2, the possibility of optimal clinical response had a tendency to decline as preoperative BMI increased. CONCLUSION Our research indicated the non-linear inverted U-shaped correlation between preoperative BMI and adequate weight loss. Setting a preoperative BMI threshold of 42.9 is critical to predicting optimal clinical outcomes.
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Affiliation(s)
- Guanyang Chen
- Department of General Surgery, Peking University Ninth School of Clinical Medicine, Beijing, China
- Department of Critical Care Medicine, Peking University People's Hospital, Beijing, China
| | - Zhehong Li
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Liang Wang
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Qiqige Wuyun
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Qing Sang
- Department of General Surgery, Peking University Ninth School of Clinical Medicine, Beijing, China
| | - Jing Wang
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Zheng Wang
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Chenxu Tian
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Chengyuan Yu
- Department of General Surgery, Peking University Ninth School of Clinical Medicine, Beijing, China
| | - Buhe Amin
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Nengwei Zhang
- Department of General Surgery, Peking University Ninth School of Clinical Medicine, Beijing, China.
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
| | - Qing Fan
- Department of General Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
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Khattab MH, Said SM, Fayez MA, Elaguizy MM, Mohamed AAA, Ghobashy AM. The Association Between Preoperative Insulin-Like Growth Factor 1 Levels and the Total Body Weight Loss in Women Post Laparoscopic Sleeve Gastrectomy. Obes Surg 2024; 34:874-881. [PMID: 38285303 PMCID: PMC10899394 DOI: 10.1007/s11695-024-07077-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/21/2024] [Accepted: 01/22/2024] [Indexed: 01/30/2024]
Abstract
BACKGROUND Despite the well-described optimal initial clinical response of sleeve gastrectomy (SG) in the treatment of obesity, some patients do not achieve optimal initial clinical response. Insulin-like growth factor-1 (IGF-1) has currently shown an association with post-bariatric surgery weight loss. This study aimed to assess the IGF-1 levels in female patients with obesity, the change after surgery, and their association with the metabolic profile and weight loss after surgery. PATIENTS AND METHODS This was a prospective study that was conducted on adult female patients who were recruited for SG. The patients underwent clinical and laboratory investigations that included the IGF-1 measurement. At the 1-year follow-up, the same clinical and laboratory measures were repeated. RESULTS This study included 100 female patients. At the 1-year follow-up, there was a statistically significant reduction in body mass index (BMI) (p < 0.001), fasting HbA1C levels (p < 0.001), and triglycerides (p < 0.001), as well as a statistically significant increase in HDL (p < 0.001) and IGF-1 (p < 0.001). Multiple regression analysis revealed that, among the patients baseline characteristics, the significant predictors for the percentage of total weight loss (%TWL) were the patients' BMI (p < 0.001) and IGF-1 levels (p < 0.001). The ROC curve showed that an IGF1 cutoff value of ≤ 23 ng/ml detected suboptimal initial clinical response, with a sensitivity of 95.35% and a specificity of 100%. CONCLUSION This study underscores the significant impact of SG on weight loss and metabolic improvements in female patients. Baseline IGF-1 levels emerged as a crucial predictor of optimal initial clinical response.
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Affiliation(s)
| | - Sami M Said
- Department of General Surgery, Faculty of Medicine, Cairo University, Cairo, Egypt
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Demirpolat MT, Şişik A. Effectiveness of the Modified Hemoglobin, Albumin, Lymphocyte, and Platelet Score in Predicting Weight Loss After Laparoscopic Sleeve Gastrectomy. J Laparoendosc Adv Surg Tech A 2024; 34:61-66. [PMID: 37878772 DOI: 10.1089/lap.2023.0333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023] Open
Abstract
Introduction: The overexpression of proinflammatory cytokines in obesity has suggested an association between obesity and inflammation. In this study, we aimed to predict the success of weight loss at the end of the first year of patients who underwent laparoscopic sleeve gastrectomy (LSG) for morbid obesity using hemoglobin, albumin, lymphocyte, and platelet (HALP) score and modified HALP (m-HALP) score. Materials and Methods: Patients were divided into two groups according to the success of weight loss. The groups were compared in terms of HALP score, m-HALP score, demographic parameters, and preoperative laboratory tests. The diagnostic performance measurements of the m-HALP score were calculated. In addition, logistic regression analysis was performed for the factors affecting weight loss in the first year after LSG. Results: Seventy-two patients were evaluated. The median m-HALP score of the patients with an excess weight loss percentage (EWL%) <60 threshold was 562 (416.6-891.9), the median m-HALP score of the patients with an EWL% above the 60 threshold was 394.3 (347.9-543), and the difference between the outcome groups was significant (P = .002).The accuracy of m-HALP score in identifying the patients whose EWL would be <60% 1 year after the surgery was 63.9 (95% confidence interval = 51.7-74.9). Conclusion: This study showed that the m-HALP score is effective in predicting weight loss after bariatric surgery.
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Affiliation(s)
- Muhammed Taha Demirpolat
- Department of General Surgery, Umraniye Education and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Abdullah Şişik
- Department of General Surgery, DrHE Obesity Clinic, Istanbul, Turkey
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Preoperative Serum Cortisol Level Is Predictive of Weight Loss After Laparoscopic Sleeve Gastrectomy in Men with Severe Obesity but Not Women. Obes Surg 2023; 33:851-859. [PMID: 36626105 PMCID: PMC9988780 DOI: 10.1007/s11695-022-06415-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 11/30/2022] [Accepted: 12/09/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND Bariatric surgery is an effective treatment for severe obesity and its associated medical problems. Preoperative factors that predict postoperative weight loss remain to be fully characterized, however. METHODS Anthropometric and laboratory data were collected retrospectively for severely obese patients who underwent laparoscopic sleeve gastrectomy (LSG) between April 2016 and July 2019 at our hospital. Preoperative factors that predicted weight loss at 1 year after LSG were investigated. RESULTS A total of 122 subjects (45 men and 77 women) underwent LSG. The mean ± SD age and body mass index at surgery were 44.4 ± 10.4 years and 40.7 ± 6.7 kg/m2. The percent total weight loss (%TWL) was 27.0 ± 8.6 among all subjects, 26.4 ± 8.0 among men, and 27.4 ± 8.9 among women, with no significant difference between the sexes. The %TWL showed a significant inverse correlation with serum cortisol level in men and with age and the visceral/subcutaneous fat area ratio in women. Multivariable regression analysis revealed the presence of type 2 diabetes and the serum cortisol concentration to be negatively associated with %TWL among all subjects and men, respectively. Receiver operating characteristic curve analysis identified an optimal cutoff of 10 µg/dL for prediction of a %TWL of ≥ 25 in men by serum cortisol level. CONCLUSIONS Serum cortisol concentration was identified as a predictor for postoperative weight loss in men. Our results may thus help inform the decision to perform LSG or more effective surgical procedures in men with severe obesity.
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Li N, Xu B, Zeng J, Lei S, Gu L, Feng L, Zhu B, Huang Y, Wang L, Su L, Qu S, Cheng X, Bu L. Development of a New Index Based on Preoperative Serum Lipocalin 2 to Predict Post-LSG Weight Reduction. Obes Surg 2022; 32:1184-1192. [PMID: 35138515 PMCID: PMC8933383 DOI: 10.1007/s11695-022-05916-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/03/2022] [Accepted: 01/14/2022] [Indexed: 11/30/2022]
Abstract
Background Bariatric surgery is the most effective therapy for obesity, but targeted weight reduction is not always achieved. Serum lipocalin-2 (LCN2) is closely associated with obesity, but its impact on weight loss after surgery is unknown. We aimed to access the reliability of LCN2 levels and other parameters as effective predictors of excellent weight loss (≥ 75% excess weight loss (EWL)) 1 year after bariatric surgery. Methods This retrospective study evaluated 450 patients (aged 18–65 years) with obesity at 3 months and 1 year after laparoscopic sleeve gastrectomy (LSG) surgery. Seventy-four patients who underwent LSG surgery and met the inclusion and exclusion criteria were included in this study. Serum LCN2, thyroid function, and metabolic and anthropometric parameters were assessed. Weight reduction was expressed as %EWL and percent total weight loss (%TWL) at 3 months and 1 year post surgery. Multivariable logistic regression analysis and receiver operating characteristic (ROC) curve analysis were used to evaluate predictors of ≥ 75%EWL. Results In our cohort, %EWL and %TWL were both strongly associated with preoperative serum LCN2 levels. The binary logistic regression analysis showed that preoperative LCN2, waist circumference, and glycated hemoglobin were independent predictors of excellent weight loss. Conclusions Based on these results, we determined a new P index with better predictive value for excellent weight reduction (≥ 75%EWL) 1 year after LSG surgery. Graphical abstract ![]()
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Affiliation(s)
- Nannan Li
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Bei Xu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Jiangping Zeng
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Shihui Lei
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Lei Gu
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Lijin Feng
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Bing Zhu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Yueye Huang
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Lu Wang
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Lili Su
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Shen Qu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China
| | - Xiaoyun Cheng
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China.
| | - Le Bu
- Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital, Tongji University School of Medicine, No. 301 Middle Yanchang Road, Shanghai, 200072, China.
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Yildiz BD, Alimoğullari M. Efficacy of Tight Sleeve Gastrectomy in Superobesity: Single Surgeon Experience. Indian J Surg 2022. [DOI: 10.1007/s12262-021-03227-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Serin SO, Sisik A, Basak F. Relationship between monocyte-to-high-density lipoprotein cholesterol ratio and excess weight loss in laparoscopic sleeve gastrectomy. Biomark Med 2021; 15:1367-1375. [PMID: 34514845 DOI: 10.2217/bmm-2021-0244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: The present study evaluates the relationship between the monocyte-to-high-density lipoprotein cholesterol ratio (MHR) and the percentage of excess weight loss (%EWL) in patients undergoing laparoscopic sleeve gastrectomy. Method: This prospective cohort study evaluated 125 patients who underwent laparoscopic sleeve gastrectomy. The MHR before and at 6 months after surgery were compared in patients with <50 and ≥50 %EWL. Results: The MHR was lower in patients with a %EWL of <50 than in patients with a %EWL of ≥50 (p = 0.019). The decrease in the MHR at postoperative 6 months was more remarkable in patients with a %EWL of ≥50 (p < 0.001). Conclusion: The present study suggests that MHR decreased more remarkably at postoperative 6 months in patients with high %EWL, predicting a decrease in cardiovascular risk.
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Affiliation(s)
- Sibel Ocak Serin
- Department of Internal Medicine, University of Health Sciences, Umraniye Training & Research Hospital, Istanbul, 34760, Turkey
| | - Abdullah Sisik
- Department of General Surgery, University of Health Sciences, Umraniye Training & Research Hospital, Istanbul, 34760, Turkey
| | - Fatih Basak
- Department of General Surgery, University of Health Sciences, Umraniye Training & Research Hospital, Istanbul, 34760, Turkey
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