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Klonis C, Ashraf H, Cabalag CS, Wong DJ, Stevens SG, Liu DS. Optimal Timing of Perioperative Chemical Thromboprophylaxis in Elective Major Abdominal Surgery: A Systematic Review and Meta-analysis. Ann Surg 2023; 277:904-911. [PMID: 36538616 DOI: 10.1097/sla.0000000000005764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To investigate the effect of the timing of chemoprophylaxis on venous thromboembolisms (VTEs) and bleeding rates in patients undergoing major abdominal surgery. BACKGROUND Postoperative bleeding and VTE incur significant morbidity, mortality, and health care costs. Chemoprophylaxis is used routinely to prevent VTEs but increases bleeding risk. The perioperative timing of chemoprophylaxis initiation may influence both VTE and bleeding risks. The optimal window for commencing chemoprophylaxis in the perioperative period is unclear. METHODS MEDLINE, EMBASE, Cochrane Library, and Web of Science databases were searched using PRISMA guidelines. Randomized trials and cohort studies published between January 1, 2000 to May 10, 2022, which reported on chemoprophylaxis timing as well as the incidence of VTE and bleeding after elective abdominal surgery were meta-analyzed. RESULTS From 6175 studies, 14 (24,922 patients) were meta-analyzed. Bariatric (4 studies), antireflux (1 study), hepato-pancreatic-biliary (5 studies), colorectal (1 study), ventral hernia (1 study), and major intra-abdominal surgeries (2 studies) were included. Chemoprophylaxis was initiated before skin closure in 10,403 patients, and postoperatively in 14,519 patients. Both symptomatic [risk ratios (RR), 0.81; 95% CI, 0.45-1.43; P =0.460] and overall (RR, 0.74; 95% CI, 0.45-1.24; P =0.250) VTE rates were comparable between study groups. Compared with postoperative chemoprophylaxis, early usage increased the risk of all bleeding (RR, 1.56; 95% CI, 1.13-2.15; P =0.007), major bleeding (RR, 1.63; 95% CI, 1.16-2.28; P =0.005), blood transfusion (RR, 1.48; 95% CI, 1.24-1.76; P <0.001), and reintervention (RR, 1.94; 95% CI, 1.19-3.18; P =0.008). CONCLUSIONS Our findings advocate for initiating chemoprophylaxis postoperatively in elective abdominal surgery to minimize bleeding risk without compromising VTE protection.
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Affiliation(s)
- Christopher Klonis
- Department of Surgery, The University of Melbourne, Austin Precinct, Austin Health, Heidelberg, VIC, Australia
| | - Hamza Ashraf
- Division of Surgery, Anesthesia, and Procedural Medicine, Austin Health, Heidelberg, VIC, Australia
| | - Carlos S Cabalag
- Department of Surgery, The University of Melbourne, Austin Precinct, Austin Health, Heidelberg, VIC, Australia
- Division of Surgery, Anesthesia, and Procedural Medicine, Austin Health, Heidelberg, VIC, Australia
- Department of Surgery, General and Gastrointestinal Surgery Research Group, The University of Melbourne, Austin Precinct, Austin Health, Heidelberg, VIC, Australia
| | - Darren J Wong
- Department of Surgery, General and Gastrointestinal Surgery Research Group, The University of Melbourne, Austin Precinct, Austin Health, Heidelberg, VIC, Australia
- Department of Gastroenterology and Hepatology, Austin Health, Heidelberg, VIC, 3084, Australia
| | - Sean G Stevens
- Department of Surgery, The University of Melbourne, Austin Precinct, Austin Health, Heidelberg, VIC, Australia
- Division of Surgery, Anesthesia, and Procedural Medicine, Austin Health, Heidelberg, VIC, Australia
- Department of Surgery, General and Gastrointestinal Surgery Research Group, The University of Melbourne, Austin Precinct, Austin Health, Heidelberg, VIC, Australia
| | - David S Liu
- Department of Surgery, The University of Melbourne, Austin Precinct, Austin Health, Heidelberg, VIC, Australia
- Division of Surgery, Anesthesia, and Procedural Medicine, Austin Health, Heidelberg, VIC, Australia
- Department of Surgery, General and Gastrointestinal Surgery Research Group, The University of Melbourne, Austin Precinct, Austin Health, Heidelberg, VIC, Australia
- Division of Cancer Surgery, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
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Falanga A, Ay C, Di Nisio M, Gerotziafas G, Jara-Palomares L, Langer F, Lecumberri R, Mandala M, Maraveyas A, Pabinger I, Sinn M, Syrigos K, Young A, Jordan K. Venous thromboembolism in cancer patients: ESMO Clinical Practice Guideline. Ann Oncol 2023; 34:452-467. [PMID: 36638869 DOI: 10.1016/j.annonc.2022.12.014] [Citation(s) in RCA: 74] [Impact Index Per Article: 74.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 12/09/2022] [Accepted: 12/11/2022] [Indexed: 01/11/2023] Open
Affiliation(s)
- A Falanga
- Division of Immunohaematology and Transfusion Medicine, Haemostasis and Thrombosis Center, Department of Oncology and Haematology, Hospital Papa Giovanni XXIII, Bergamo, Italy; University of Milan Bicocca, Department of Medicine and Surgery, Monza, Italy
| | - C Ay
- Department of Medicine I, Clinical Division of Haematology and Haemostaseology, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - M Di Nisio
- Department of Medicine and Ageing Sciences, G. d'Annunzio University, Chieti, Italy
| | - G Gerotziafas
- Sorbonne University, INSERM UMRS-938, Team "Cancer Vessels, Biology and Therapeutics", Group "Cancer-Hemostasis-Angiogenesis", Institut Universitaire de Cancérologie, Consultation Thrombosis in Oncology (COTHON), Tenon-Saint Antoine Hospital, AP-HP, Paris, France
| | - L Jara-Palomares
- Respiratory Department, Medical Surgical Unit of Respiratory Diseases, Hospital Virgen del Rocio, Sevilla; Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - F Langer
- Centre for Oncology, University Cancer Centre Hamburg (UCCH), II Medical Clinic and Polyclinic, University Medical Centre Eppendorf, Hamburg, Germany
| | - R Lecumberri
- Servicio de Hematología, Clínica Universidad de Navarra, Pamplona (Navarra); CIBER-CV, Instituto de Salud Carlos III, Madrid, Spain
| | - M Mandala
- University of Perugia, Unit of Medical Oncology, Santa Maria Misericordia Hospital, Perugia, Italy
| | - A Maraveyas
- Queen's Centre for Oncology and Haematology, Faculty of Health Sciences, Hull York Medical School and Hull University Teaching Hospitals NHS Trust, Hull, UK
| | - I Pabinger
- Department of Medicine I, Clinical Division of Haematology and Haemostaseology, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - M Sinn
- Centre for Oncology, University Cancer Centre Hamburg (UCCH), II Medical Clinic and Polyclinic, University Medical Centre Eppendorf, Hamburg, Germany
| | - K Syrigos
- Oncology Unit, 3rd Department of Medicine, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - A Young
- Warwick Clinical Trials Unit, Warwick Medical School, University of Warwick, Coventry, UK
| | - K Jordan
- Department of Hematology, Oncology and Palliative Medicine, Ernst von Bergmann Hospital, Potsdam, Germany; Department of Rheumatology, Oncology and Rheumatology, University Hospital Heidelberg, Heidelberg, Germany
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Shargall Y, Wiercioch W, Brunelli A, Murthy S, Hofstetter W, Lin J, Li H, Linkins LA, Crowther M, Davis R, Rocco G, Morgano GP, Schünemann F, Muti-Schünemann G, Douketis J, Schünemann HJ, Litle VR. Joint 2022 European Society of Thoracic Surgeons and The American Association for Thoracic Surgery guidelines for the prevention of cancer-associated venous thromboembolism in thoracic surgery. J Thorac Cardiovasc Surg 2023; 165:794-824.e6. [PMID: 36895083 DOI: 10.1016/j.jtcvs.2022.05.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 04/21/2022] [Accepted: 05/09/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Venous thromboembolism (VTE), which includes deep vein thrombosis and pulmonary embolism, is a potentially fatal but preventable postoperative complication. Thoracic oncology patients undergoing surgical resection, often after multimodality induction therapy, represent among the highest risk groups for postoperative VTE. Currently there are no VTE prophylaxis guidelines specific to these thoracic surgery patients. Evidenced-based recommendations will help clinicians manage and mitigate risk of VTE in the postoperative period and inform best practice. OBJECTIVE These joint evidence-based guidelines from The American Association for Thoracic Surgery and the European Society of Thoracic Surgeons aim to inform clinicians and patients in decisions about prophylaxis to prevent VTE in patients undergoing surgical resection for lung or esophageal cancer. METHODS The American Association for Thoracic Surgery and the European Society of Thoracic Surgeons formed a multidisciplinary guideline panel that included broad membership to minimize potential bias when formulating recommendations. The McMaster University GRADE Centre supported the guideline development process, including updating or performing systematic evidence reviews. The panel prioritized clinical questions and outcomes according to their importance for clinicians and patients. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used, including GRADE Evidence-to-Decision frameworks, which were subject to public comment. RESULTS The panel agreed on 24 recommendations focused on pharmacological and mechanical methods for prophylaxis in patients undergoing lobectomy and segmentectomy, pneumonectomy, and esophagectomy, as well as extended resections for lung cancer. CONCLUSIONS The certainty of the supporting evidence for the majority of recommendations was judged as low or very low, largely due to a lack of direct evidence for thoracic surgery. The panel made conditional recommendations for use of parenteral anticoagulation for VTE prevention, in combination with mechanical methods, over no prophylaxis for cancer patients undergoing anatomic lung resection or esophagectomy. Other key recommendations include: conditional recommendations for using parenteral anticoagulants over direct oral anticoagulants, with use of direct oral anticoagulants suggested only in the context of clinical trials; conditional recommendation for using extended prophylaxis for 28 to 35 days over in-hospital prophylaxis only for patients at moderate or high risk of thrombosis; and conditional recommendations for VTE screening in patients undergoing pneumonectomy and esophagectomy. Future research priorities include the role of preoperative thromboprophylaxis and the role of risk stratification to guide use of extended prophylaxis.
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Affiliation(s)
- Yaron Shargall
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
| | - Wojtek Wiercioch
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Alessandro Brunelli
- Department of Thoracic Surgery, St. James's University Hospital, Leeds, United Kingdom
| | - Sudish Murthy
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Wayne Hofstetter
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Tex
| | - Jules Lin
- Section of Thoracic Surgery, University of Michigan, Ann Arbor, Mich
| | - Hui Li
- Department of Thoracic Surgery, Capital Medical University, Beijing, China
| | - Lori-Ann Linkins
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Marc Crowther
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Roger Davis
- Patient Representative, Burlington, Ontario, Canada
| | - Gaetano Rocco
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Gian Paolo Morgano
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Finn Schünemann
- Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
| | - Giovanna Muti-Schünemann
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - James Douketis
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Holger J Schünemann
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada; Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Virginia R Litle
- Department of Surgery, Boston University School of Medicine, Boston, Mass
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4
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Postoperative Timing of Chemoprophylaxis and Its Impact on Thromboembolism and Bleeding Following Major Abdominal Surgery: A Multicenter Cohort Study. World J Surg 2023; 47:1174-1183. [PMID: 36806555 PMCID: PMC10070293 DOI: 10.1007/s00268-023-06899-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2022] [Indexed: 02/21/2023]
Abstract
BACKGROUND Major abdominal surgery is associated with bleeding and venous thromboembolism (VTE) risks. Chemoprophylaxis prevents VTE but increases bleeding risk. When compared with pre- and intra-operative chemoprophylaxis, recent evidence suggests that starting chemoprophylaxis postoperatively lowers the risk of bleeding without compromising VTE protection. This study investigates whether an optimal window exists in the postoperative period for initiating chemoprophylaxis in patients undergoing major abdominal surgery. METHODS Analysis of pooled data from four multicenter PROTECTinG studies, which investigated the timing of perioperative chemoprophylaxis on bleeding and VTE outcomes following major abdominal surgery. Patients that commenced chemoprophylaxis postoperatively were separated into quartiles based on timing of administration within the first 24 h post-surgery. RESULTS Overall, 4729 (Abdominal visceral resection N = 668, cholecystectomies N = 573, major ventral hernia repair N = 1701, antireflux surgery N = 1787) consecutive patients had chemoprophylaxis commenced within 24 h following elective surgery. Baseline characteristics were comparable between quartiles. Across quartiles and within each procedural type, the timing of starting chemoprophylaxis was not associated with bleeding (2.6, 1.7, 2.7 and 3.2%, p = 0.130) or clinical VTE (0.8, 0.2, 0.8 and 0.5%, p = 0.131), and did not predict their occurrences on multivariate analysis. CONCLUSION Chemoprophylaxis can be safely started at any time within 24 h post-skin closure in major abdominal surgery, without affecting bleeding or VTE risks. This finding encourages the standardization of chemoprophylaxis timing in the postoperative period to pre-defined times during the day to improve workflow efficiency and chemoprophylaxis compliance.
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5
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Optimal Timing of Perioperative Chemoprophylaxis in Patients With High Thromboembolic Risk Undergoing Major Abdominal Surgery: A Multicenter Cohort Study. Ann Surg 2023; 277:79-86. [PMID: 36512695 DOI: 10.1097/sla.0000000000005697] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To determine whether early (before skin closure) versus postoperative chemoprophylaxis affects the incidence of venous thromboembolism (VTE) and bleeding following major abdominal surgery, in a high thromboembolic risk population. BACKGROUND Major abdominal surgery incurs both VTE and bleeding risks. Patients with high preoperative VTE risk derive the most benefit from chemoprophylaxis, but carry an increased risk of bleeding. The optimal window for chemoprophylaxis in the perioperative period, whereby both VTE and bleeding risks are minimized, is unknown. METHODS Analysis of pooled data from 5 multicenter studies including only high thromboembolic risk (Caprini score >4) patients. Clinical VTE was defined as radiographically proven symptomatic disease <30 days postsurgery. Major bleeding was defined as the need for blood transfusion, reintervention, or >20 g/L fall in hemoglobin. RESULTS From 5501 cases, chemoprophylaxis was initiated early in 1752 (31.8%) patients and postoperatively in 3749 (68.2%) patients. Baseline characteristics were similar between study groups. The incidence of clinical VTE was not associated with chemoprophylaxis timing [early 0.7% vs. postop 0.7%, odds ratio (OR): 1.11, 95% confidence interval (CI): 0.60-2.15, P =0.730]. Contrastingly, compared with postoperative chemoprophylaxis, early usage increased the risk of all bleeding (5.1% vs. 2.6%, OR: 2.04, 95% CI: 1.52-2.73, P <0.001) major bleeding (3.6% vs. 1.8%, OR: 1.99, 95% CI: 1.40-2.81, P <0.001), and reintervention (2.0% vs. 1.0%, OR: 2.10, 95% CI: 1.32-3.35, P =0.003). Early chemoprophylaxis independently predicted postoperative bleeding (OR: 1.71, 95% CI: 1.25-2.34, P <0.001), but not VTE. CONCLUSIONS In high VTE risk patients undergoing major abdominal surgery, chemoprophylaxis commenced postoperatively reduces bleeding risk without affecting clinical VTE risk.
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6
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Shargall Y, Wiercioch W, Brunelli A, Murthy S, Hofstetter W, Lin J, Li H, Linkins LA, Crowther M, Davis R, Rocco G, Morgano GP, Schünemann F, Muti-Schünemann G, Douketis J, Schünemann HJ, Litle VR. Joint 2022 European Society of Thoracic Surgeons and The American Association for Thoracic Surgery guidelines for the prevention of cancer-associated venous thromboembolism in thoracic surgery. EUROPEAN JOURNAL OF CARDIO-THORACIC SURGERY : OFFICIAL JOURNAL OF THE EUROPEAN ASSOCIATION FOR CARDIO-THORACIC SURGERY 2022; 63:6889652. [PMID: 36519935 DOI: 10.1093/ejcts/ezac488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 04/21/2022] [Accepted: 05/09/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Venous thromboembolism (VTE), which includes deep vein thrombosis and pulmonary embolism, is a potentially fatal but preventable postoperative complication. Thoracic oncology patients undergoing surgical resection, often after multimodality induction therapy, represent among the highest risk groups for postoperative VTE. Currently there are no VTE prophylaxis guidelines specific to these thoracic surgery patients. Evidenced-based recommendations will help clinicians manage and mitigate risk of VTE in the postoperative period and inform best practice. OBJECTIVE These joint evidence-based guidelines from The American Association for Thoracic Surgery and the European Society of Thoracic Surgeons aim to inform clinicians and patients in decisions about prophylaxis to prevent VTE in patients undergoing surgical resection for lung or esophageal cancer. METHODS The American Association for Thoracic Surgery and the European Society of Thoracic Surgeons formed a multidisciplinary guideline panel that included broad membership to minimize potential bias when formulating recommendations. The McMaster University GRADE Centre supported the guideline development process, including updating or performing systematic evidence reviews. The panel prioritized clinical questions and outcomes according to their importance for clinicians and patients. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used, including GRADE Evidence-to-Decision frameworks, which were subject to public comment. RESULTS The panel agreed on 24 recommendations focused on pharmacological and mechanical methods for prophylaxis in patients undergoing lobectomy and segmentectomy, pneumonectomy, and esophagectomy, as well as extended resections for lung cancer. CONCLUSIONS The certainty of the supporting evidence for the majority of recommendations was judged as low or very low, largely due to a lack of direct evidence for thoracic surgery. The panel made conditional recommendations for use of parenteral anticoagulation for VTE prevention, in combination with mechanical methods, over no prophylaxis for cancer patients undergoing anatomic lung resection or esophagectomy. Other key recommendations include: conditional recommendations for using parenteral anticoagulants over direct oral anticoagulants, with use of direct oral anticoagulants suggested only in the context of clinical trials; conditional recommendation for using extended prophylaxis for 28 to 35 days over in-hospital prophylaxis only for patients at moderate or high risk of thrombosis; and conditional recommendations for VTE screening in patients undergoing pneumonectomy and esophagectomy. Future research priorities include the role of preoperative thromboprophylaxis and the role of risk stratification to guide use of extended prophylaxis. (J Thorac Cardiovasc Surg 2022;▪:1-31).
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Affiliation(s)
- Yaron Shargall
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Wojtek Wiercioch
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Alessandro Brunelli
- Department of Thoracic Surgery, St. James's University Hospital, Leeds, United Kingdom
| | - Sudish Murthy
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic, Cleveland, Ohio, USA
| | - Wayne Hofstetter
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Jules Lin
- Section of Thoracic Surgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Hui Li
- Department of Thoracic Surgery, Capital Medical University, Beijing, China
| | - Lori-Ann Linkins
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Marc Crowther
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Roger Davis
- Patient Representative, Burlington, Ontario, Canada
| | - Gaetano Rocco
- Memorial Sloan Kettering Cancer Center, New York, NY
| | - Gian Paolo Morgano
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Finn Schünemann
- Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
| | - Giovanna Muti-Schünemann
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - James Douketis
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Holger J Schünemann
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada.,Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Virginia R Litle
- Department of Surgery, Boston University School of Medicine, Boston, Massachusetts, USA
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Poulos CM, Althoff AL, Scott RB, Wakefield D, Lewis R. A novel scoring system for identifying patients at risk for venous thromboembolism undergoing diverticular resection: an American College of Surgeons-National Surgical Quality Improvement Program Study. Surg Endosc 2022; 36:8415-8420. [PMID: 35229213 DOI: 10.1007/s00464-022-09129-6] [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: 09/05/2021] [Accepted: 02/07/2022] [Indexed: 01/06/2023]
Abstract
Following colorectal surgery, venous thromboembolism (VTE) is a serious complication occurring at an estimated incidence of 2-4%. There is a significant body of literature stratifying risk of VTE in specific populations undergoing colorectal resection for cancer or inflammatory bowel disease. There has been little research characterizing patients undergoing colorectal surgery for other indications, e.g. diverticulitis. We hypothesize that there exists a subgroup of patients with identifiable risk factors undergoing resection for diverticulitis that has relatively higher risks for VTE. We conducted a retrospective review of the American College of Surgeons National Surgical Quality Improvement Project database from 2006 to 2017 who underwent colorectal resection for diverticulitis. Patients with a primary indication for resection other than diverticulitis were excluded. Multivariate logistic regression modeling was conducted to determine the risk of VTE for each independent variable. A novel scoring system was developed and a receiver-operating-characteristic curve was generated. The rate of VTE was 1.49%. An 7-point scoring system was developed using identified significant variables. Patients scoring ≥ 6 on the developed scoring scale had a 3.12% risk of 30-day VTE development. A simple scoring system based on identified significant risk factors was specifically developed to predict the risk of VTE in patients undergoing diverticular colorectal resection. These patients are at significantly higher risk and may justify increased vigilance regarding VTE events, similar to patients undergoing colorectal resection for cancer or inflammatory bowel disease.
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Affiliation(s)
- Constantine M Poulos
- Department of Surgery, University of Connecticut Health Center, Farmington, CT, 06030, USA.
| | - Ashley L Althoff
- Department of Surgery, University of Connecticut Health Center, Farmington, CT, 06030, USA
| | - Rachel B Scott
- Colon and Rectal Surgeons of Greater Hartford, Bloomfield, CT, 06002, USA
| | - Dorothy Wakefield
- Department of Surgery, University of Connecticut Health Center, Farmington, CT, 06030, USA
| | - Robert Lewis
- Colon and Rectal Surgeons of Greater Hartford, Bloomfield, CT, 06002, USA
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Chemical thromboprophylaxis before skin closure increases bleeding risk after major ventral hernia repair: A multicenter cohort study. Surgery 2022; 172:198-204. [DOI: 10.1016/j.surg.2022.01.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 12/16/2021] [Accepted: 01/16/2022] [Indexed: 11/24/2022]
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Early Versus Postoperative Chemical Thromboprophylaxis Is Associated with Increased Bleeding Risk Following Abdominal Visceral Resections: a Multicenter Cohort Study. J Gastrointest Surg 2022; 26:1495-1502. [PMID: 35318594 PMCID: PMC9296430 DOI: 10.1007/s11605-022-05301-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/10/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND Abdominal visceral resections incur relatively higher rates of postoperative bleeding and venous thromboembolism (VTE). While guidelines recommend the use of perioperative chemical thromboprophylaxis, the most appropriate time for its initiation is unknown. Here, we investigated whether early (before skin closure) versus postoperative commencement of chemoprophylaxis affected VTE and bleeding rates following abdominal visceral resection. METHODS Retrospective review of all elective abdominal visceral resections undertaken between January 1, 2018, and June 30, 2019, across four tertiary-referral hospitals. Major bleeding was defined as the need for blood transfusion, reintervention, or > 20 g/L fall in hemoglobin from baseline. Clinical VTE was defined as imaging-proven symptomatic disease < 30 days post-surgery. RESULTS A total of 945 cases were analyzed. Chemoprophylaxis was given early in 265 (28.0%) patients and postoperatively in 680 (72.0%) patients. Mean chemoprophylaxis exposure doses were similar between the two groups. Clinical VTE developed in 14 (1.5%) patients and was unrelated to chemoprophylaxis timing. Postoperative bleeding occurred in 71 (7.5%) patients, with 57 (80.3%) major bleeds, requiring blood transfusion in 48 (67.6%) cases and reintervention in 31 (43.7%) cases. Bleeding extended length-of-stay (median (IQR), 12 (7-27) versus 7 (5-11) days, p < 0.001). Importantly, compared to postoperative chemoprophylaxis, early administration significantly increased the risk of bleeding (10.6% versus 6.3%, RR 1.45, 95% CI 1.05-1.93, p = 0.038) and independently predicted its occurrence. CONCLUSIONS The risk of bleeding following elective abdominal visceral resections is substantial and is higher than the risk of clinical VTE. Compared with early chemoprophylaxis, postoperative initiation reduces bleeding risk without an increased risk of clinical VTE.
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Tafler K, Kuriya A, Gervais N, Leyland N. Guideline No. 417: Prevention of Venous Thromboembolic Disease in Gynaecological Surgery. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2022; 44:82-96.e1. [PMID: 33878456 DOI: 10.1016/j.jogc.2021.04.003] [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: 11/18/2022]
Abstract
OBJECTIVE The primary objective of this clinical practice guideline is to provide gynaecologists with an algorithm and evidence to guide the use of thromboprophylaxis in gynaecological surgery. TARGET POPULATION All patients undergoing gynaecological surgery for benign or malignant indications. BENEFITS, HARMS, AND COSTS The implementation of this guideline will benefit patients undergoing gynaecological surgery and provide physicians with a standard algorithm for the use of perioperative thromboprophylaxis. EVIDENCE The following search terms were entered into MEDLINE, Google Scholar, and Cochrane in 2017 and 2018: VTE, PE, DVT, thromboprophylaxis, gynaecological surgery, heparin, graduated compression stocking, intermittent pneumatic stocking, obesity, pediatrics, minimally invasive surgery, heparin induced thrombocytopenia, regional anesthesia). Articles included were randomized controlled trials, meta-analyses, systematic reviews, and observational studies. Additional publications were identified from the reference lists of these articles. There were no date limits, but search results were limited to English language articles only. Searches were updated and incorporated into the guideline up to September 2018. VALIDATION METHODS The authors rated the quality of evidence and strength of recommendations using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. See online Appendix A (Tables A1 for definitions and A2 for interpretations of strong and weak recommendations). INTENDED USERS Gynaecologists and other members of the surgical team. RECOMMENDATIONS (GRADE RATINGS IN PARENTHESES).
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11
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Perioperative coagulofibrinolytic responses in colorectal surgery patients without chemical thromboprophylaxis: a retrospective observational study. Surg Today 2021; 52:904-913. [PMID: 34697683 PMCID: PMC9132822 DOI: 10.1007/s00595-021-02393-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/15/2021] [Indexed: 12/03/2022]
Abstract
Purpose During the perioperative period, coagulofibrinolytic activation occurs, which occasionally results in thromboembolic complications. However, natural perioperative coagulofibrinolytic responses have not been well investigated. The present study examined perioperative coagulofibrinolytic changes and their association with the development of venous thromboembolism (VTE). Methods We retrospectively analyzed the changes in coagulofibrinolytic markers for 7 days in 70 patients undergoing elective colorectal surgery. To explore the natural coagulofibrinolytic response, we investigated patients not undergoing perioperative chemical thromboprophylaxis. Results Coagulation activation occurred from just after surgery to postoperative day (POD) 1, followed by a gradual decrease, but persisted to even POD 7. Fibrinolytic activity showed a tri-phasic response: activation, shutdown and reactivation. Consequently, fibrin/fibrinogen degradation product (FDP) and D-dimer levels continued to increase until POD 7. The development of deep vein thrombosis (DVT) was observed in 11 patients (15.7%). Postoperative sustained hyper-coagulation [soluble fibrin (SF) or thrombin–antithrombin complex (TAT) values on POD 7 > their normal limits] was significantly associated with the development of DVT (SF, p < 0.001; TAT, p = 0.001). Conclusion We found initial coagulation activation and a tri-phasic response of fibrinolytic activity after colorectal surgery. Thus, physicians need to pay attention to these responses when attempting to prevent or treat VTE.
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Huang X, Kuang Y, Qin Q, Zhu M, He Y, Yuan Z, Wang H, Zhong Q, Guan Q, Wang H, Ma T, Fan X. Risk Prediction and Treatment of LE-DVT in Patients with Chronic Radiation Intestinal Injury: A Retrospective Case-Control Study. Cancer Manag Res 2021; 13:6611-6619. [PMID: 34466031 PMCID: PMC8397618 DOI: 10.2147/cmar.s319918] [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: 05/24/2021] [Accepted: 07/26/2021] [Indexed: 11/23/2022] Open
Abstract
Background Chronic radiation intestinal injury (CRII) is the most common complication after pelvic malignancy radiation. Once hemorrhagic CRII patients suffer from lower extremity deep venous thrombosis (LE-DVT), hemostasis and anticoagulation therapy will be adopted simultaneously, but the treatment strategy is a paradox, as the condition is extremely intractable and serious. The aim of this study was to investigate the prevalence of and risk factors for LE-DVT in CRII patients and explore the treatment of hemorrhagic CRII patients with LE-DVT. Methods This was a retrospective study, and a total of 608 hospitalized CRII patients after pelvic radiotherapy were included from November 2011 to October 2018. Univariate and multivariate analyses were conducted to investigate the potential risk factors for LE-DVT in CRII patients. Furthermore, the treatment of hemorrhagic CRII patients with LE-DVT was explored. Results Among the CRII patients, 94 (15.5%) were with suspicious symptoms of LE-DVT in the lower limbs, and 32 (5.3%) were diagnosed with LE-DVT. Among the patients with LE-DVT, 65.6% (21/32) had bleeding simultaneously, and 29 (90.6%) had anemia with 24 (75.0%) having moderate to severe anemia. Multivariate analysis showed that a recent surgical history (≤6 months) (OR = 5.761, 95% CI: 2.506~13.246, p < 0.001), tumor recurrence or metastasis (OR = 3.049, 95% CI: 1.398~6.648, p = 0.005) and the hemoglobin (Hb) level (OR = 0.960, 95% CI: 0.942~0.979, p < 0.001) were significantly associated with the development of LE-DVT. ROC curve analysis showed that the AUC of the merged risk score of the independent risk factors was 0.822 (95% CI: 0.789~0.852), and the optimal Hb cutoff was 82.5 g/L. After colostomy, obvious bleeding remission was rapidly found in 84.6% of hemorrhagic CRII patients with LE-DVT. Conclusion The prevalence of LE-DVT in hospitalized CRII patients was 5.3%. A recent surgical history, tumor recurrence or metastasis and a lower Hb level were independently associated with LE-DVT development in CRII patients. Colostomy could be a good choice for intractable hemorrhagic CRII patients with LE-DVT.
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Affiliation(s)
- Xiaoyan Huang
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Yingyi Kuang
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Qiyuan Qin
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Miaomiao Zhu
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Yanjiong He
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Zixu Yuan
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Huaiming Wang
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Qinghua Zhong
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Endoscopic Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Qi Guan
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Hui Wang
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Tenghui Ma
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
| | - Xinjuan Fan
- Guangdong Institute of Gastroenterology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China.,Department of Pathology, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510655, People's Republic of China
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McAlpine K, Breau RH, Werlang P, Carrier M, Le Gal G, Fergusson DA, Shorr R, Cagiannos I, Morash C, Lavallée LT. Timing of Perioperative Pharmacologic Thromboprophylaxis Initiation and its Effect on Venous Thromboembolism and Bleeding Outcomes: A Systematic Review and Meta-Analysis. J Am Coll Surg 2021; 233:619-631.e14. [PMID: 34438079 DOI: 10.1016/j.jamcollsurg.2021.07.687] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 01/22/2023]
Abstract
BACKGROUND Perioperative thromboprophylaxis guidelines offer conflicting recommendations on when to start thromboprophylaxis. As a result, there is considerable variation in clinical practice, which can lead to worse patient outcomes. The objective of this study was to evaluate the association between the start time of perioperative thromboprophylaxis with venous thromboembolism (VTE) and bleeding outcomes. STUDY DESIGN Embase, Medline, and CENTRAL (Cochrane Central Register of Controlled Trials) databases were searched on October 23, 2020. Randomized controlled trials that evaluated VTE and/or bleeding among groups receiving the initial dose of pharmacologic thromboprophylaxis at different times preoperatively, intraoperatively, or postoperatively were included. Only trials that randomized patients to the same medication among groups were eligible. Studies on any type of operation were included. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed. The Cochrane Collaboration risk of bias tool was used. The review was registered with PROSPERO (International Prospective Register of Systematic Reviews; CRD42019142079). The outcomes of interest were VTE and bleeding. Prespecified subgroup analyses of studies including orthopaedic and nonorthopaedic operations were performed. RESULTS A total of 22 trials (n = 17,124 patients) met eligibility criteria. Pooled results showed a nonstatistically significant decrease in the rate of VTE with preoperative initiation of thromboprophylaxis compared with postoperative initiation (risk ratio 0.77; 95% CI, 0.55 to 1.08; I2 = 0%, n = 1,933). There was also a nonstatistically significant increase in the rate of bleeding with preoperative compared with postoperative initiation (risk ratio 1.17; 95% CI, 0.94 to 1.46; I2 = 35%, n = 2,752). Risk of bias was moderate. Heterogeneity between studies was low (I2 = 0% to 35%). CONCLUSIONS This meta-analysis found a nonstatistically significant decrease in the rate of VTE and an increase in the rate of bleeding when thromboprophylaxis was initiated preoperatively compared with postoperatively.
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Affiliation(s)
- Kristen McAlpine
- Division of Urology, University of Ottawa, Ottawa, ON, Canada; Division of Urology, University of Toronto, Toronto, ON, Canada
| | - Rodney H Breau
- Division of Urology, University of Ottawa, Ottawa, ON, Canada; The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Paulo Werlang
- Division of Urology, University of Ottawa, Ottawa, ON, Canada
| | - Marc Carrier
- The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada; Department of Medicine, University of Ottawa, Ottawa, ON, Canada; The Ottawa Hospital, Ottawa, University of Ottawa, Ottawa, ON, Canada
| | - Gregoire Le Gal
- The Ottawa Hospital, Ottawa, University of Ottawa, Ottawa, ON, Canada
| | - Dean A Fergusson
- The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Risa Shorr
- Library Services, University of Ottawa, Ottawa, ON, Canada
| | - Ilias Cagiannos
- Division of Urology, University of Ottawa, Ottawa, ON, Canada; The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Christopher Morash
- Division of Urology, University of Ottawa, Ottawa, ON, Canada; The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Luke T Lavallée
- Division of Urology, University of Ottawa, Ottawa, ON, Canada; The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada.
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Defining the Economic Burden of Perioperative Venous Thromboembolism in Inflammatory Bowel Disease in the United States. Dis Colon Rectum 2021; 64:871-880. [PMID: 33833140 DOI: 10.1097/dcr.0000000000001942] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/06/2022]
Abstract
BACKGROUND Patients with IBD are at increased risk of venous thromboembolism. OBJECTIVE This study aims to define the economic burden associated with inpatient venous thromboembolism after surgery for IBD that presently remains undefined. DESIGN This study is a retrospective, cross-sectional analysis using the National Inpatient Sample from 2004 to 2014. SETTING Participating hospitals across the United States were sampled. PATIENTS The International Classification of Diseases, 9th Revision codes were used to identify patients with a primary diagnosis of IBD. INTERVENTIONS Major abdominopelvic bowel surgery was performed. MAIN OUTCOME MEASURES The primary outcome measured was the occurrence of inpatient venous thromboembolism. Univariate and multivariable patient- and hospital-level logistic regression models were used to compare patient characteristics, hospital characteristics, and outcomes between venous thromboembolism and non-venous thromboembolism cohorts. Total average direct costs were then compared between cohorts, and the resulting difference was extrapolated to the national population. RESULTS Of 26,080 patients included, inpatient venous thromboembolism was identified in 581 (2.2%). On multivariable analysis, diagnosis of ulcerative colitis, transfer status, length of preoperative hospitalization, and insurance status were independently associated with inpatient venous thromboembolism. Patients with venous thromboembolism were observed to be associated with an increased median length of stay (17.6 vs 6.7 days; p < 0.001) and higher inpatient mortality (5.0% vs 1.1%; OR 4.7, SE 3.2-7.0; p < 0.001). After adjusting for clinically relevant covariates, the additional cost associated with each inpatient venous thromboembolism was $31,551 (95% CI, $29,136-$33,965). LIMITATIONS Our study is limited by the administrative nature of the National Inpatient Sample database, which limits our ability to evaluate the impact of clinical covariates (eg, use of venous thromboembolism chemoprophylaxis, steroid use, and nutrition status). CONCLUSION Inpatient venous thromboembolism in abdominopelvic surgery for IBD is an infrequent, yet costly, morbid complication. Given the magnitude of patient morbidity and economic burden, venous thromboembolism prevention should be a national quality improvement and research priority. See Video Abstract at http://links.lww.com/DCR/B544. DEFINICIN IMPACTO ECONMICO DE LA TROMBOEMBOLIA VENOSA PERIOPERATORIA EN LA ENFERMEDAD INFLAMATORIA INTESTINAL EN LOS ESTADOS UNIDOS ANTECEDENTES:Pacientes con enfermedad inflamatoria intestinal (EII) tienen un mayor riesgo de tromboembolismo venoso (TEV).OBJETIVO:Definir el impacto económico de TEV hospitalaria después de la cirugía por EII, que en la actualidad permanece indefinida.DISEÑO:Un análisis transversal retrospectivo utilizando la Muestra Nacional de Pacientes Internos (NIS) de 2004 a 2014.ENTORNO CLINICO:Hospitales participantes muestreados en los Estados Unidos.PACIENTES:Se utilizaron los códigos de la 9ª edición de la Clasificación Internacional de Enfermedades (ICD-9) para identificar a los pacientes con diagnóstico primario de EII.INTERVENCIONES:Cirugía mayor abdominopélvica intestinal.PRINCIPALES MEDIDAS DE VALORACION:Incidencia de TEV en pacientes hospitalizados, utilizando modelos de regresión logística univariado y multivariable a nivel de pacientes y hospitales para comparar las características de los pacientes, las características del hospital y los resultados entre las cohortes de TEV y no TEV. Se compararon los costos directos promedio totales entre cohortes y la diferencia resultante extrapolando a la población nacional.RESULTADOS:De 26080 pacientes incluidos, se identificó TEV hospitalario en 581 (2,2%). En análisis multivariable, el diagnóstico de colitis ulcerosa, el estado de transferencia (entre centros hospitalarios), la duración de la hospitalización preoperatoria y el nivel de seguro medico se asociaron de forma independiente con la TEV hospitalaria. Se observó que los pacientes con TEV se asociaron con un aumento de la duración media de la estancia (17,6 versus a 6,7 días; p <0,001) y una mayor mortalidad hospitalaria (5,0% versus a 1,1%; OR 4,7, SE 3,2 -7,0; p <0,001). Después de ajustar las covariables clínicamente relevantes, el costo adicional asociado con cada TEV para pacientes hospitalizados fue de $ 31,551 USD (95% C.I. $ 29,136 - $ 33,965).LIMITACIONES:Estudio limitado por la naturaleza administrativa de la base de datos del NIS, que limita nuestra capacidad para evaluar el impacto de las covariables clínicas (por ejemplo, el uso de quimioprofilaxis de TEV, el uso de esteroides y el estado nutricional).CONCLUSIÓN:TEV hospitalaria en la cirugía abdominopélvica para la EII es una complicación mórbida infrecuente, pero costosa. Debido a la magnitud de la morbilidad el impacto económico, la prevención del TEV debería ser una prioridad de investigación y para mejoría de calidad a nivel nacional. Consulte Video Resumen en http://links.lww.com/DCR/B544.
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Tafler K, Kuriya A, Gervais N, Leyland N. Directive clinique no 417 : Prévention de la maladie thromboembolique veineuse en chirurgie gynécologique (In English : Prevention of Venous Thromboembolic Disease in Gynaecological Surgery). JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2021; 44:97-113.e1. [PMID: 33887446 DOI: 10.1016/j.jogc.2021.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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D'Astous J, Liederman Z, Douketis JD. Venous thromboembolism prophylaxis in high-risk orthopedic and cancer surgery. Postgrad Med 2021; 133:20-26. [PMID: 33779472 DOI: 10.1080/00325481.2021.1891751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Orthopedic surgery and surgery for cancer are major risk factors for venous thromboembolism (VTE). Deep vein thrombosis (DVT) can occur in up to 50% of patients after major orthopedic surgery. The rate of VTE after cancer surgery varies according to the type of surgery, with rates as high as those after orthopedic surgery in certain settings. Use of thromboprophylaxis in these high-risk settings is well established and recent studies inform the type and duration of thromboprophylaxis. With major orthopedic surgery, there has been a shift from use of low molecular weight heparins (LMWHs) to direct oral anticoagulants (DOACs) along with renewed interest in aspirin as a thromboprophylaxis agent. Recent studies have also informed optimal thromboprophylaxis strategies after nonmajor orthopedic surgery. Use of thromboprophylaxis after major cancer surgery for cancer is established and recent evidence has focused on the potential benefits of extended-duration thromboprophylaxis. This review will summarize emerging evidence for thromboprophylaxis after orthopedic and cancer surgery with a view to providing clinicians with concise and actionable guidance for best practice.
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Affiliation(s)
- Julien D'Astous
- Centre Hospitalier De l'Universite De Montreal, Montreal, Quebec, Canada.,Université De Montréal, Montreal, Quebec, Canada
| | - Zachary Liederman
- University Health Network, Toronto, Ontario, Canada.,University of Toronto, Toronto, Ontario, Canada
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Stupart D, Watters D. Perioperative thromboprophylaxis: inconsistent guidelines and evidence gaps lead to variable practice. ANZ J Surg 2020; 90:2391-2392. [DOI: 10.1111/ans.16403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 10/13/2020] [Indexed: 11/26/2022]
Affiliation(s)
- Douglas Stupart
- University Hospital Geelong Barwon Health Bellerine St Newtown Australia
| | - David Watters
- School of Medicine Deakin University Geelong Victoria Australia
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Pak H, Maghsoudi LH, Soltanian A, Gholami F. Surgical complications in colorectal cancer patients. Ann Med Surg (Lond) 2020; 55:13-18. [PMID: 32435475 PMCID: PMC7229272 DOI: 10.1016/j.amsu.2020.04.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/01/2020] [Accepted: 04/18/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Advancements in diagnostic and therapeutic sciences have allowed early diagnosis and treatment of cancer. Colorectal cancer is one of the most commonly reported cancers, particularly in elderly patients. METHODS Open and laparoscopic surgeries are used for the removal of the tumor, along with chemotherapy, depending on the stage of cancer. However, colorectal cancer surgery is associated with a great number of complications, that affect the efficacy of the surgery and overall health and survival of the patient. RESULTS Prevalence of these complications have shown discrepancies depending on the condition of the patient and disease and surgical skills of the surgeon. Preoperative evaluation, intraoperative care and postoperative measures can reduce the incidence of these complications. CONCLUSION This review highlights some frequently reported complications associated with colorectal cancer surgery, their risk factors and subsequent therapeutic measures to treat them.
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Affiliation(s)
- Haleh Pak
- Department of Surgery, School of Medicine, Shahid Madani Hospital, Alborz University of Medical Sciences, Karaj, Iran
| | - Leila Haji Maghsoudi
- Department of Anesthesiology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Ali Soltanian
- Department of Surgery, School of Medicine, Shahid Madani Hospital, Alborz University of Medical Sciences, Karaj, Iran
| | - Farshid Gholami
- Department of Surgery, School of Medicine, Shahid Madani Hospital, Alborz University of Medical Sciences, Karaj, Iran
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Nakagawa K, Watanabe J, Ota M, Suwa Y, Suzuki S, Suwa H, Momiyama M, Ishibe A, Saigusa Y, Yamanaka T, Kunisaki C, Endo I. Efficacy and safety of enoxaparin for preventing venous thromboembolic events after laparoscopic colorectal cancer surgery: a randomized-controlled trial (YCOG 1404). Surg Today 2019; 50:68-75. [DOI: 10.1007/s00595-019-01859-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 07/06/2019] [Indexed: 12/13/2022]
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20
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The prevalence of venous thromboembolism in rectal surgery: a systematic review and meta-analysis. Int J Colorectal Dis 2019; 34:849-860. [PMID: 30824975 DOI: 10.1007/s00384-019-03244-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/11/2019] [Indexed: 02/04/2023]
Abstract
PURPOSE Venous thromboembolism (VTE) following rectal surgery is a significant and preventable cause of morbidity and mortality, yet the true prevalence is not well established. This systematic review and meta-analysis assessed the available literature and determined its prevalence following rectal surgery. METHODS A systematic review assessed the prevalence of VTE following rectal surgery. In addition, we evaluated whether subgroups (open vs. minimally invasive or benign vs. malignant resections) impacted on its prevalence or rate of deep venous thrombosis (DVT) or pulmonary embolism (PE). RESULT Thirty-eight studies met the predefined inclusion criteria. The aggregate prevalence of VTE following rectal surgery was 1.25% (95% CI 0.86-1.63), with DVT and PE occurring in 0.68% (95% CI 0.48-0.89) and 0.57% (95% CI 0.47-0.68) of patients. VTE following cancer and benign resection was 1.59% (95% CI 0.60-1.23 and 1.5% (95% CI 0.89-2.12) respectively. The prevalence of VTE in patients having minimally invasive resection was lower than those having open surgery [0.58% (16/2770) vs. 2.22% (250/11278); RR 0.54, 95% CI 0.33-0.86]. CONCLUSION This review observed that there is sparse evidence on prevalence of VTE following rectal surgery. It provides aggregated data and analysis of available literature, showing overall prevalence is low, especially in those having minimally invasive procedures.
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Coagulation and deep vein flow changes following laparoscopic total extraperitoneal inguinal hernia repair: a single-center, prospective cohort study. Surg Endosc 2019; 33:4057-4065. [PMID: 30747283 DOI: 10.1007/s00464-019-06700-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 02/06/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND PURPOSE Venous thromboembolism (VTE) is a serious complication encountered in surgical practice. The purpose of this study was to identify changes in coagulation status and deep vein flow parameters, within 24 h postoperatively, for patients undergoing laparoscopic total extraperitoneal inguinal hernia repair (TEP). METHODS For 144 patients undergoing TEP, coagulation markers including prothrombin time (PT), partial thromboplastin time, thrombin time, D-dimer, fibrinogen, fibrin degradation products (FDP), and international normalized ratio (INR) were monitored preoperatively and in the first morning postoperatively. Echo-Doppler recordings preoperatively and again within 24 h postoperatively were completed for 23 patients to monitor lower extremity deep vein flow parameters including speed of flow (cm/s), diameter (cm), and cross-sectional area (cm2). Clinically significant VTE and other complications were recorded. RESULTS No significant VTE were diagnosed. Significant increases were seen in the first morning postoperatively for PT, D-dimer, FDP, and INR (P < 0.05). Stratified by age, except for those < 50 years, the ratio of value-outside-the-normal-range (VONR) for D-dimer and FDP increased significantly postoperatively for all age groups. Stratified by operation duration, a significant difference in the ratio of VONR in D-dimer was identified postoperatively between those with an operation duration < 60 min and ≥ 60 min. There were significant decreases in the iliac and common femoral vein flow velocity of the ipsilateral extremity postoperatively (P < 0.05). CONCLUSIONS Activated hypercoagulability and hampered lower extremity deep vein flow were observed immediately after TEP. DVT formation was more pronounced in older patients and for those with operation duration ≥ 60 min. Proper VTE risk stratification for laparoscopic inguinal hernia repair (LIHR) and prophylaxis early after LIHR should be important clinical considerations.
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Emoto S, Nozawa H, Kawai K, Hata K, Tanaka T, Shuno Y, Nishikawa T, Sasaki K, Kaneko M, Hiyoshi M, Murono K, Ishihara S. Venous thromboembolism in colorectal surgery: Incidence, risk factors, and prophylaxis. Asian J Surg 2019; 42:863-873. [PMID: 30683604 DOI: 10.1016/j.asjsur.2018.12.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 12/25/2018] [Indexed: 02/07/2023] Open
Abstract
Colorectal surgery is associated with a high risk of perioperative venous thromboembolism (VTE), and this risk is especially high following colorectal cancer resection and surgery for inflammatory bowel disease. Previous analyses of large databases have reported the incidence of postoperative VTE in this population to be approximately 1.1%-2.5%. Therefore, to minimize this risk, patients should be offered appropriate prophylaxis, which may involve a combination of mechanical and pharmacologic prophylaxis with low-dose unfractionated heparin or low molecular weight heparin as recommended by several guidelines. Prior to initiation of treatment, appropriate risk stratification should be performed according to the patients' basic and disease-related as well as procedure-related risk factors, and post-operative factors. Furthermore, a risk-benefit calculation that takes into account patients' VTE and bleeding risk should be performed prior to starting pharmacologic prophylaxis and to help determine the duration of treatment.
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Affiliation(s)
- Shigenobu Emoto
- Department of Surgical Oncology, The University of Tokyo, Japan.
| | - Hiroaki Nozawa
- Department of Surgical Oncology, The University of Tokyo, Japan
| | - Kazushige Kawai
- Department of Surgical Oncology, The University of Tokyo, Japan
| | - Keisuke Hata
- Department of Surgical Oncology, The University of Tokyo, Japan
| | - Toshiaki Tanaka
- Department of Surgical Oncology, The University of Tokyo, Japan
| | - Yasutaka Shuno
- Department of Surgical Oncology, The University of Tokyo, Japan
| | | | - Kazuhito Sasaki
- Department of Surgical Oncology, The University of Tokyo, Japan
| | - Manabu Kaneko
- Department of Surgical Oncology, The University of Tokyo, Japan
| | - Masaya Hiyoshi
- Department of Surgical Oncology, The University of Tokyo, Japan
| | - Koji Murono
- Department of Surgical Oncology, The University of Tokyo, Japan
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23
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Sinnamon AJ, Tong JKC, Bailey EA, Brown C, Colbert L, Murray S, Jackson BM, Roses RE. Prospective implementation of a standardized screening protocol for deep venous thrombosis in abdominal surgical oncology patients. J Surg Oncol 2018; 118:568-573. [PMID: 30114315 DOI: 10.1002/jso.25151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 06/08/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND OBJECTIVES Venous thromboembolism (VTE) remains a major cause of perioperative morbidity and mortality despite implementation of prophylaxis guidelines. We sought to identify risk factors for occult deep venous thrombosis (DVT) following abdominal surgery for cancer and measure the clinical impact of a prospectively implemented standardized postoperative DVT screening protocol. METHODS Patients undergoing abdominal surgery for malignant indication were screened with early postoperative lower extremity duplex to identify DVT. Clinical and pathologic factors associated with DVT were identified. RESULTS Among 255 patients meeting study criteria, 25 (9.8%) had occult lower extremity DVT on routine postoperative screening. Prior history of VTE and lower preoperative hemoglobin were independently associated with DVT (OR, 9.05; P = 0.004; and OR, 1.27; P = 0.025, respectively). Preoperative chemotherapy within 1 year and thrombocytopenia were associated with DVT in univariate analyses only. Five patients developed postoperative pulmonary emboli (2.0%); three following negative duplex and two following positive duplex for distal DVT for which the patients were not therapeutically anticoagulated due to a contraindication. There were no pulmonary emboli in duplex-positive patients who were anticoagulated or who had vena cava filter placed. CONCLUSION Despite prophylaxis, the prevalence of occult DVT in abdominal oncologic surgery patients is considerable. Postoperative screening duplex can identify these events to guide management.
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Affiliation(s)
- Andrew J Sinnamon
- Division of Endocrine and Oncologic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jason K C Tong
- Division of Endocrine and Oncologic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Elizabeth A Bailey
- Division of Endocrine and Oncologic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Caitlin Brown
- Division of Endocrine and Oncologic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Latesha Colbert
- Division of Endocrine and Oncologic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Shannon Murray
- Division of Endocrine and Oncologic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Benjamin M Jackson
- Division of Vascular Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Robert E Roses
- Division of Endocrine and Oncologic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
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Brady JT, Kelly ME, Stein SL. The Trump Effect: With No Peer Review, How Do We Know What to Really Believe on Social Media? Clin Colon Rectal Surg 2017; 30:270-276. [PMID: 28924401 DOI: 10.1055/s-0037-1604256] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Social media is a source of news and information for an increasing portion of the general public and physicians. The recent political election was a vivid example of how social media can be used for the rapid spread of "fake news" and that posts on social media are not subject to fact-checking or editorial review. The medical field is susceptible to propagation of misinformation, with poor differentiation between authenticated and erroneous information. Due to the presence of social "bubbles," surgeons may not be aware of the misinformation that patients are reading, and thus, it may be difficult to counteract the false information that is seen by the general public. Medical professionals may also be prone to unrecognized spread of misinformation and must be diligent to ensure the information they share is accurate.
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Affiliation(s)
- Justin T Brady
- Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio
| | - Molly E Kelly
- Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio
| | - Sharon L Stein
- Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, Ohio
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25
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Ban KA, Gibbons MM, Ko CY, Wick EC. Surgical Technical Evidence Review for Colorectal Surgery Conducted for the AHRQ Safety Program for Improving Surgical Care and Recovery. J Am Coll Surg 2017; 225:548-557.e3. [PMID: 28797562 DOI: 10.1016/j.jamcollsurg.2017.06.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 06/24/2017] [Accepted: 06/26/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Kristen A Ban
- American College of Surgeons, Chicago, IL; Department of Surgery, Loyola University Medical Center, Maywood, IL
| | - Melinda M Gibbons
- Department of Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Clifford Y Ko
- American College of Surgeons, Chicago, IL; Department of Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Elizabeth C Wick
- Armstrong Institute for Patient Safety and Quality, Johns Hopkins University, Baltimore, MD.
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26
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Hashimoto D, Nakagawa S, Umezaki N, Yamao T, Kitano Y, Yamamura K, Kaida T, Arima K, Imai K, Yamashita YI, Chikamoto A, Baba H. Efficacy and safety of postoperative anticoagulation prophylaxis with enoxaparin in patients undergoing pancreatic surgery: A prospective trial and literature review. Pancreatology 2017; 17:464-470. [PMID: 28366422 DOI: 10.1016/j.pan.2017.03.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/26/2017] [Accepted: 03/28/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND /Objectives: Enoxaparin is low-molecular-weight heparin that is used for postoperative thromboprophylaxis. The purpose of this study was to evaluate the efficacy and safety of enoxaparin after pancreatic resection. We additionally carried out a literature review regarding venous thromboembolism (VTE) and postoperative bleeding mainly after hepatobiliary-pancreatic surgery. METHODS This was a prospective, single-arm study. Patients aged 20-79 years who planned to undergo pancreatic resection followed by postoperative anticoagulation therapy with enoxaparin were enrolled from 2013 to 2016. The exclusion criteria were low renal function, active bleeding, clinical signs of VTE at screening, or evidence of thromboembolic disease before surgery. The primary endpoint was the incidence of postoperative VTE. The secondary endpoint was the incidence of postoperative complications. For the literature review, PubMed was searched for relevant articles and the PRISMA guidelines were used. RESULTS In total, 103 patients were analyzed. Two patients (1.9%) developed asymptomatic VTE, and no patients developed symptomatic VTE. No in-hospital mortality occurred. Morbidities (Clavien-Dindo grade ≥ IIIa) occurred in 29 patients (28.1%). Three patients (2.9%) developed intra-abdominal hemorrhage due to pseudoaneurysm formation after pancreaticoduodenectomy or distal pancreatectomy. The literature review included nine articles, and all indicated that the results of this study were feasible. CONCLUSION This is the first prospective trial to focus on pharmacologic prophylaxis with enoxaparin after pancreatic surgery. Postoperative anticoagulant therapy with enoxaparin was used in patients who underwent pancreatic surgery with a low incidence of VTE and no increase in postoperative bleeding events compared with existing evidence.
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Affiliation(s)
- Daisuke Hashimoto
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Shigeki Nakagawa
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Naoki Umezaki
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Takanobu Yamao
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Yuki Kitano
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Kensuke Yamamura
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Takayoshi Kaida
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Kota Arima
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Katsunori Imai
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Yo-Ichi Yamashita
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Akira Chikamoto
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan
| | - Hideo Baba
- Department of Gastroenterological Surgery, Kumamoto University Graduate School of Medical Sciences, Kumamoto, Japan.
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27
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Scientific surgery. Br J Surg 2017. [DOI: 10.1002/bjs.10496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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