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Metoyer GT, Ali Asgar J, D'Adamo CR, Wolf JH, Katlic M, Svoboda S, Mavanur A. The modified frailty index predicts postoperative venous thromboembolism incidence better than older age in colorectal surgery patients. Am J Surg 2024; 236:115450. [PMID: 37802702 DOI: 10.1016/j.amjsurg.2023.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 09/07/2023] [Accepted: 09/11/2023] [Indexed: 10/08/2023]
Affiliation(s)
- Garyn T Metoyer
- Department of Surgery, Sinai Hospital, 2401 W Belvedere Ave, Baltimore, MD, 21215, USA.
| | - Juzer Ali Asgar
- Department of Surgery, Sinai Hospital, 2401 W Belvedere Ave, Baltimore, MD, 21215, USA; University of Medicine and Health Sciences, 275 7th Ave 26th Floor, New York, NY, 10001, USA.
| | - Christopher R D'Adamo
- Department of Family and Community Medicine, University of Maryland School of Medicine, Center for Integrative Medicine, 655 W. Baltimore Street, Baltimore, MD, 21201, USA.
| | - Joshua H Wolf
- Department of Surgery, Sinai Hospital, 2401 W Belvedere Ave, Baltimore, MD, 21215, USA; Department of Surgery, George Washington University, 2150 Pennsylvania Avenue NW, Washington, DC, 20037, USA.
| | - Mark Katlic
- Department of Surgery, Sinai Hospital, 2401 W Belvedere Ave, Baltimore, MD, 21215, USA; Department of Surgery, George Washington University, 2150 Pennsylvania Avenue NW, Washington, DC, 20037, USA.
| | - Shane Svoboda
- Department of Surgery, Sinai Hospital, 2401 W Belvedere Ave, Baltimore, MD, 21215, USA.
| | - Arun Mavanur
- Department of Surgery, Sinai Hospital, 2401 W Belvedere Ave, Baltimore, MD, 21215, USA; Department of Surgery, The Johns Hopkins Hospital, 1800 Orleans St, Baltimore, MD, 21287, USA.
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Lundbech M, Krag AE, Iversen LH, Brandsborg B, Madsen N, Hvas AM. Elevated Thrombin Generation and Venous Thromboembolism Incidence in Patients Undergoing Cytoreductive Surgery with Hyperthermic Intraperitoneal Chemotherapy Compared with Minimally Invasive Rectal Surgery. Thromb Haemost 2024. [PMID: 39260397 DOI: 10.1055/a-2413-4989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
INTRODUCTION Surgical treatment of colorectal cancer carries a risk for venous thromboembolism (VTE). We investigated changes in coagulation and fibrinolysis and the VTE incidence within 30 days in patients undergoing open cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (CRS + HIPEC) for peritoneal metastases from colorectal cancer and minimally invasive surgery (MIS) for localized rectal cancer. METHODS This cohort study included 45 CRS + HIPEC and 45 MIS patients. Blood samples were obtained preoperatively, at the end of surgery, and postoperative day (POD) 1, 3 to 4, and 5 to 7. Systematic ultrasonographic screening for VTE was performed between POD 3 and 7. Computed tomography scan was performed if complications were suspected. The primary endpoint was the difference in mean change (Δ) with [95% confidence intervals] from preoperative to end of surgery in prothrombin fragment 1 + 2 (F1 + 2) levels. Secondary endpoints were the difference in mean change in biomarkers of coagulation and fibrinolysis from preoperative to POD 5 to 7 and the VTE incidence. RESULTS F1 + 2 levels increased from preoperative to the end of surgery in both groups. The mean increase from preoperative to end of surgery in F1 + 2 levels was significantly greater in CRS + HIPEC patients than MIS patients: Δ1,322 [1,040:1,604] pmol/L, p < 0.01. The VTE incidence was significantly higher after CRS + HIPEC than MIS (24 vs. 5%, p = 0.01). CONCLUSION F1 + 2 levels were increased after both procedures, but to a far greater extent following CRS + HIPEC. The VTE incidence within 30 days was significantly higher in patients treated with CRS + HIPEC than in MIS patients.
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Affiliation(s)
- Mikkel Lundbech
- Department of Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Andreas E Krag
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Plastic and Breast Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Lene H Iversen
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Birgitte Brandsborg
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Anesthesiology South, Aarhus University Hospital, Aarhus, Denmark
| | - Nina Madsen
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Radiology, Aarhus University Hospital, Aarhus, Denmark
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Cénat JM, Dromer E, Farahi SMMM, Ndamage CM, Yun A, Zuta H, Mkhatri J, Samson E, Barara R, Labelle PR, Xu Y. Venous thromboembolism in Black COVID-19 patients in a minority context compared to White, Asian and other racialized patients: A systematic review and meta-analysis. Thromb Res 2024; 238:197-205. [PMID: 38733691 DOI: 10.1016/j.thromres.2024.05.007] [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: 03/21/2024] [Revised: 04/26/2024] [Accepted: 05/06/2024] [Indexed: 05/13/2024]
Abstract
IMPORTANCE COVID-19 has disproportionately affected racialized populations, with particular impact among individuals of Black individuals. However, it is unclear whether disparities in venous thromboembolic (VTE) complications exist between Black individuals and those belonging to other racial groups with confirmed SARS-CoV2 infections. OBJECTIVE To summarize the prevalence and moderators associated with VTE among Black COVID-19 patients in minoritized settings, and to compare this to White and Asian COVID-19 patients according to sex, age, and comorbid health conditions (heart failure, cancer, obesity, hypertension). DESIGN SETTING, AND PARTICIPANTS A systematic search of MEDLINE, Embase, CINAHL and CENTRAL for articles or reports published from inception to February 15, 2023. STUDY SELECTION Reports on VTE among Black individuals infected with SARS-CoV2, in countries where Black people are considered a minority population group. DATA EXTRACTION AND SYNTHESIS Study characteristics and results of eligible studies were independently extracted by 2 pairs of reviewers. VTE prevalence was extracted, and risk of bias was assessed. Prevalence estimates of VTE prevalence among Black individuals with COVID19 in each study were pooled. Where studies provided race-stratified VTE prevalence among COVID19 patients, odds ratios were generated using a random-effects model. MAIN OUTCOMES AND MEASURES Prevalence of VTE, comprising of deep vein thrombosis and pulmonary embolism. RESULTS Ten studies with 66,185 Black individuals reporting the prevalence of COVID-19 associated VTE were included. Weighted median age of included studies was 47.60. Pooled prevalence of COVID-19 associated VTE was 7.2 % (95 % CI, 3.8 % - 11.5 %) among Black individuals. Among individuals with SARS-CoV2 infections, Black population had higher risks of VTE compared to their White (OR = 1.79, [95 % CI 1.28-2.53], p < .001) or Asian (OR = 2.01, [95 % CI, 1.14-3.60], p = .017) counterparts, or patients with other racial identities (OR = 2.01, [95 % CI, 1.39, 2.92]; p < .001). CONCLUSIONS AND RELEVANCE Black individuals with COVID-19 had substantially higher risk of VTE compared to White or Asian individuals. Given racial disparities in thrombotic disease burden related to COVID-19, medical education, research, and health policy interventions are direly needed to ensure adequate disease awareness among Black individuals, to facilitate appropriate diagnosis and treatment among Black patients with suspected and confirmed VTE, and to advocate for culturally safe VTE prevention strategies, including pre-existing inequalities to the COVID-19 pandemic that persist after the crisis.
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Affiliation(s)
- Jude Mary Cénat
- School of Psychology, University of Ottawa, Ottawa, Ontario, Canada; Interdisciplinary Centre for Black Health, University of Ottawa, Ottawa, Ontario, Canada; University of Ottawa Research Chair on Black Health, Ottawa, Ontario, Canada.
| | - Elisabeth Dromer
- School of Psychology, University of Ottawa, Ottawa, Ontario, Canada
| | | | | | - Aiden Yun
- School of Psychology, University of Ottawa, Ottawa, Ontario, Canada
| | - Hannah Zuta
- Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Jihane Mkhatri
- School of Psychology, University of Ottawa, Ottawa, Ontario, Canada
| | - Eden Samson
- Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - Raina Barara
- Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | | | - Yan Xu
- Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada; The Ottawa Hospital, Ottawa, Ontario, Canada
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Ochi T, Katsuno H, Kato H, Takagi S, Kikuchi K, Nakamura K, Endo T, Matsuo K, Yasuoka H, Nishimura A, Horiguchi A, Morise Z. Preliminary comparative study of lower extremity pressure measurements under the conditions using former models and new lithotomy stirrups in rectal cancer surgery. World J Surg Oncol 2024; 22:85. [PMID: 38566192 PMCID: PMC10988980 DOI: 10.1186/s12957-024-03352-2] [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: 10/25/2023] [Accepted: 02/24/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND This study aimed to investigate the effect of the use of new lithotomy stirrups-2 on the pressure dispersal on lower limbs, which may lead to the prevention of well-leg compartment syndrome (WLCS) and deep venous thrombosis (DVT), which are the most commonly associated adverse events with laparoscopic and robot-assisted rectal surgery. METHODS A total of 30 healthy participants were included in this study. The pressure (mmHg) applied on various lower limb muscles when using conventional lithotomy stirrups-1 and new type stirrups-2 was recorded in various lithotomy positions; 1) neutral position, 2) Trendelenburg position (15°) with a 0° right inferior tilt, and 3) Trendelenburg position (15°) with a 10° right inferior tilt. Using a special sensor pad named Palm Q®, and the average values were compared between two types of stirrups. RESULTS The use of new lithotomy stirrups-2 significantly reduced the pressure applied on the lower limb muscles in various lithotomy positions compared with the use of lithotomy stirrups-1. The most pressured lower limb muscle when using both lithotomy stirrups was the central soleus muscle, which is the most common site for the development of WLCS and DVT. In addition, when using the conventional lithotomy stirrups-1, the pressure was predominantly applied to the proximal soleus muscle; however, when using lithotomy stirrups-2, the pressure was shifted to the more distal soleus muscle. CONCLUSION These results suggest that the new lithotomy stirrups-2 is useful in reducing the pressure load on leg muscles, especially on the proximal to central soleus, and may reduce the incidence of WLCS and DVT after rectal surgery performed in the lithotomy position. Further clinical studies are needed to determine whether the use of lithotomy stirrups-2 prevents these complications in various clinical settings.
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Affiliation(s)
- Takayuki Ochi
- Department of Gastroenterological Surgery, Fujita Health University School of Medicine, Bantane Hospital, Nagoya, Japan
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan
| | - Hidetoshi Katsuno
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan.
| | - Hiroyuki Kato
- Department of Gastroenterological Surgery, Fujita Health University School of Medicine, Bantane Hospital, Nagoya, Japan
| | - Shinya Takagi
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan
| | - Kenji Kikuchi
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan
| | - Kenichi Nakamura
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan
| | - Tomoyoshi Endo
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan
| | - Kazuhiro Matsuo
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan
| | - Hironobu Yasuoka
- Department of Gastroenterological Surgery, Fujita Health University School of Medicine, Bantane Hospital, Nagoya, Japan
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan
| | - Akihiro Nishimura
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan
| | - Akihiko Horiguchi
- Department of Gastroenterological Surgery, Fujita Health University School of Medicine, Bantane Hospital, Nagoya, Japan
| | - Zenichi Morise
- Department of Surgery, Fujita Health University School of Medicine Okazaki Medical Center, Okazaki, Japan
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Lewis‐Lloyd CA, Crooks CJ, West J, Peacock O, Humes DJ. Time trends in the incidence rates of venous thromboembolism following colorectal resection by indication and operative technique. Colorectal Dis 2022; 24:1405-1415. [PMID: 35733416 PMCID: PMC9796069 DOI: 10.1111/codi.16233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/30/2022] [Accepted: 06/14/2022] [Indexed: 12/30/2022]
Abstract
AIM It is important for patient safety to assess if international changes in perioperative care, such as the focus on venous thromboembolism (VTE) prevention and minimally invasive surgery, have reduced the high post colectomy VTE risks previously reported. This study assesses the impact of changes in perioperative care on VTE risk following colorectal resection. METHOD This was a population-based cohort study of colectomy patients in England between 2000 and 2019 using a national database of linked primary (Clinical Practice Research Datalink) and secondary (Hospital Episode Statistics) care data. Within 30 days following colectomy, absolute VTE rates per 1000 person-years and adjusted incidence rate ratios (aIRRs) using Poisson regression for the per year change in VTE risk were calculated. RESULTS Of 183 791 patients, 1337 (0.73%) developed 30-day postoperative VTE. Overall, VTE rates reduced over the 20-year study period following elective (relative risk reduction 31.25%, 95% CI 5.69%-49.88%) but not emergency surgery. Similarly, yearly changes in VTE risk reduced following minimally invasive resections (elective benign, aIRR 0.93, 95% CI 0.90-0.97; elective malignant, aIRR 0.94, 95% CI 0.91-0.98; and emergency benign, aIRR 0.96, 95% CI 0.92-1.00) but not following open resections. There was a per year VTE risk increase following open emergency malignant resections (aIRR 1.02, 95% CI 1.00-1.04). CONCLUSION Yearly VTE risks reduced following minimally invasive surgeries in the elective setting yet in contrast were static following open elective colectomies, and following emergency malignant resections increased by almost 2% per year. To reduce VTE risk, further efforts are required to implement advances in surgical care for those having emergency and/or open surgery.
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Affiliation(s)
- Christopher A. Lewis‐Lloyd
- Gastrointestinal Surgery, National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre (BRC), School of Medicine, Queen's Medical CentreNottingham University Hospitals NHS Trust and the University of NottinghamNottinghamUK,Gastrointestinal and Liver Theme, National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre (BRC), School of Medicine, Queen's Medical Centre)Nottingham University Hospitals NHS Trust and the University of NottinghamNottinghamUK
| | - Colin J. Crooks
- Gastrointestinal and Liver Theme, National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre (BRC), School of Medicine, Queen's Medical Centre)Nottingham University Hospitals NHS Trust and the University of NottinghamNottinghamUK
| | - Joe West
- Gastrointestinal and Liver Theme, National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre (BRC), School of Medicine, Queen's Medical Centre)Nottingham University Hospitals NHS Trust and the University of NottinghamNottinghamUK,Population and Lifespan SciencesUniversity of Nottingham, School of MedicineNottinghamUK
| | - Oliver Peacock
- Department of Colon and Rectal Surgery, MD Anderson Cancer CenterUniversity of TexasHoustonTexasUSA
| | - David J. Humes
- Gastrointestinal Surgery, National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre (BRC), School of Medicine, Queen's Medical CentreNottingham University Hospitals NHS Trust and the University of NottinghamNottinghamUK,Gastrointestinal and Liver Theme, National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre (BRC), School of Medicine, Queen's Medical Centre)Nottingham University Hospitals NHS Trust and the University of NottinghamNottinghamUK
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Chakraborty P, Jacob A. Extended chemothromboprophylaxis use in colorectal cancer surgery: a literature review. ANZ J Surg 2022; 92:1644-1650. [DOI: 10.1111/ans.17454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 12/21/2021] [Indexed: 12/24/2022]
Affiliation(s)
- Priyanka Chakraborty
- Department of General Surgery Royal Perth Hospital Perth Western Australia Australia
| | - Abraham Jacob
- Department of General Surgery Royal Perth Hospital Perth Western Australia Australia
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Risk factors for postoperative proximal deep vein thrombosis and pulmonary embolism after laparoscopic colorectal cancer surgery: analysis of a multicenter randomized controlled trial. Surg Today 2021; 52:881-888. [PMID: 34845507 DOI: 10.1007/s00595-021-02422-2] [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] [Received: 04/09/2021] [Accepted: 09/01/2021] [Indexed: 12/17/2022]
Abstract
PURPOSE Postoperative venous thromboembolism (VTE) is a major and potentially fatal postoperative complication of colorectal cancer surgery. However, there is uncertainty about the necessity for anticoagulant prophylaxis to prevent VTE after laparoscopic colorectal cancer surgery because of its associated relatively lower incidence. Currently, anticoagulant therapy is considered mainly for patients at high risk of the development of VTE. Focusing on proximal deep vein thrombosis (DVT)/ pulmonary embolism (PE), we aimed to identify those cases at high risk of the development of fatal VTE. METHODS We performed an exploratory retrospective analysis to identify the risk factors for postoperative proximal DVT and PE after laparoscopic colorectal cancer surgery in patients included in our prospective trial. RESULTS A logistic regression analysis revealed factors that could predict the onset of proximal DVT/PE in patients with colorectal cancer. Blood loss and tumor location were identified as the predictors of proximal DVT/PE. CONCLUSIONS Patients with rectal cancer and those with excessive blood loss during colon cancer surgery must be monitored carefully for signs of VTE and especially proximal DVT/PE, after laparoscopic surgery.
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Liu Y, Cai J, Wang C, Jin J, Qu L. A systematic review and meta-analysis of incidence, prognosis, and laboratory indicators of venous thromboembolism in hospitalized patients with coronavirus disease 2019. J Vasc Surg Venous Lymphat Disord 2021; 9:1099-1111.e6. [PMID: 33529719 PMCID: PMC7847192 DOI: 10.1016/j.jvsv.2021.01.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 01/21/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVE We have summarized the incidence, anticoagulation panels, laboratory characteristics, and mortality of venous thromboembolism (VTE) in hospitalized patients with coronavirus disease 2019 (COVID-19). METHODS After systematically searching PubMed, Embase, the Cochrane Library, MedRxiv, and BioRxiv, a systematic review and meta-analysis of 18 retrospective, 6 prospective observational, and 2 cross-sectional studies was performed according to the guidelines of the PRISMA (preferred reporting items for systematic reviews and meta-analyses) statement. RESULTS Overall, 4382 hospitalized patients with COVID-19 were included. Men accounted for significantly more patients than did women (odds ratio [OR], 1.59; 95% confidence interval [CI], 1.25-2.02; P < .001). The total incidence of VTE among the patients with COVID-19 was 28.3% (95% CI, 21.6%-35.4%), with an incidence of 38.0% (95% CI, 29.1%-47.4%) and 17.2% (95% CI, 11.4%-23.8%) among those with severe and general COVID-19, respectively. The total incidence of deep vein thrombosis (DVT) of the lower extremities was 18.3% (95% CI, 10.8%-27.2%). The incidence of DVT was 22.1% (95% CI, 11.0%-35.5%) and 12.8% (95% CI, 5.0%-23.3%) in those with severe and general COVID-19, respectively. The total incidence of pulmonary embolism was 17.6% (95% CI, 12.3%-23.5%), with a rate of 21.7% (95% CI, 14.8%-29.3%) in severe cases and 12.5% (95% CI, 6.1%-23.5%) in general cases. When COVID-19 severity was unclassified, the mortality for the patients with VTE was not significantly greater (25.2%; 95% CI, 12.2%-40.5%) than that for those without VTE (10.2%; 95% CI, 3.4%-19.5%; OR, 1.88; 95% CI, 0.46-7.64; P = .377). However, among the patients with severe COVID-19, those who had developed VTE had significantly greater mortality compared with those without VTE (OR, 2.02; 95% CI, 1.15-3.53; P = .014). The patients with COVID-19 and VTE had significantly higher D-dimer levels than did similar patients without VTE in multiple studies. CONCLUSIONS The occurrence of VTE, DVT, and pulmonary embolism has been substantial among hospitalized patients with COVID-19, especially among those with severe COVID-19. Patients with severe COVID-19 and VTE had significantly greater mortality compared with similar patients without VTE. An increased D-dimer level might be an indicator of the occurrence of VTE in patients with COVID-19.
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Affiliation(s)
- Yandong Liu
- Department of Vascular and Endovascular Surgery, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Jiawei Cai
- Department of Vascular and Endovascular Surgery, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Chao Wang
- Department of Vascular and Endovascular Surgery, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Jie Jin
- Department of Vascular and Endovascular Surgery, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Lefeng Qu
- Department of Vascular and Endovascular Surgery, Changzheng Hospital, Naval Medical University, Shanghai, China.
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Zhang P, Li L, Tian J, Zhang P, Yang K. Statins for the prevention of primary venous thromboembolism. Hippokratia 2021. [DOI: 10.1002/14651858.cd014769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Peng Zhang
- Department of Pediatric Surgery; Nanyang Central Hospital; Nanyang China
| | - Lun Li
- Department of Breast Surgery; The Second Xiangya Hospital, Central South University; Changsha China
| | - JinHui Tian
- Evidence-Based Medicine Center, School of Basic Medical Sciences; Lanzhou University; Lanzhou City China
| | - Peizhen Zhang
- Maternity and Child-care; Hospital of Lanzhou City; Lanzhou City China
| | - KeHu Yang
- Key Laboratory of Evidence Based Medicine and Knowledge Translation of Gansu Province; Lanzhou University; Lanzhou City China
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