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Ho JW, Chao CL, Helenowski IB, Dwyer A, Vavra AK, Eskandari MK, Hekman KE, Tomita TM. Efficacy and safety of sonographer discretion to terminate a venous duplex ultrasound for diagnosis of deep vein thrombosis in coronavirus disease 2019 patients. J Vasc Surg Venous Lymphat Disord 2023; 11:10-18.e1. [PMID: 35931361 PMCID: PMC9344809 DOI: 10.1016/j.jvsv.2022.06.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/28/2022] [Accepted: 06/09/2022] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Sonographers performing venous duplex ultrasound (VDUS) of patients with coronavirus disease 2019 (COVID-19) have an increased risk of exposure owing to their close contact with these patients for an extended period. The objective of the present study was to evaluate the efficacy of a modified COVID-19 VDUS protocol to reduce sonographer exposure to COVID-19 patients. METHODS We performed a single-center retrospective review. Patients who had undergone VDUS under the modified COVID-19 protocol between March 1, 2020, and June 30, 2020, with a confirmed or presumed COVID-19 diagnosis at the VDUS were included. The modified COVID-19 protocol was defined as the ability of the sonographer to terminate the examination on detection of an acute deep vein thrombosis (DVT). The primary outcome measures were the number of anatomic deep venous segments recorded by the sonographer, which was used as a surrogate measure for sonographer exposure time, and the number of acute DVTs found on follow-up examinations in segments not visualized at the index VDUS. RESULTS A total of 160 lower extremity VDUS (LEVDUS) scans and 72 upper extremity VDUS (UEVDUS) scans were performed using the modified COVID-19 protocol. The index VDUS had found an acute DVT for 44 of 160 patients (27.5%) who had undergone LEVDUS and 26 of 72 (36.6%) who had undergone UEVDUS. On follow-up imaging, 7 of 38 LEVDUS scans (17.9%) and 1 of 10 UEVDUS scans (10%) had demonstrated a new acute DVT. Malignancy and surgery 30 days before imaging were significantly associated with acute lower extremity DVT, and mechanical ventilation and extracorporeal membrane oxygenation were associated with acute upper extremity DVT. On the index VDUS, the average was 10.6 of 12 total visualized segments on LEVDUS and 6.4 of 10 total segments on UEVDUS. Of the index VDUS scans, 35.6% of the LEVDUS and 78.6% of the UEVDUS scans had been abbreviated. The index VDUS scans that were positive for acute DVT had had significantly fewer visualized segments for both lower (8.4 vs 11.5; P < .0001) and upper (4.2 vs 7.6) extremities (P < .0001). On the follow-up examinations, only one of eight new acute DVTs had been found in a patient whose index VDUS had been abbreviated and the corresponding segment not assessed. These findings did not affect the patient's clinical course. CONCLUSIONS The modified COVID-19 VDUS protocol reduced sonographers' potential exposure time to COVID-19. Additionally, the clinical efficacy was maintained, with no missed DVTs, despite the abbreviation of the VDUS examinations.
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Affiliation(s)
- Jessie W Ho
- Division of Vascular Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Calvin L Chao
- Division of Vascular Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Irene B Helenowski
- Division of Vascular Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Ann Dwyer
- Division of Vascular Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Ashley K Vavra
- Division of Vascular Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Mark K Eskandari
- Division of Vascular Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Katherine E Hekman
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, Emory University School of Medicine, Atlanta, GA; Atlanta VA Healthcare System, Decatur, GA.
| | - Tadaki M Tomita
- Division of Vascular Surgery, Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL
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Olgers TJ, Lieveld AWE, Kok B, Heijmans J, Salet D, Assman NL, Postma DF, Bauer MP, Nanayakkara PWB, Meijer K, Bosch FH, Kooistra H. Screening for asymptomatic deep vein thrombosis in COVID-19 patients admitted to the medical ward: a cross-sectional study. J Ultrasound 2022; 26:163-168. [PMID: 35567703 PMCID: PMC9107005 DOI: 10.1007/s40477-022-00689-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 04/19/2022] [Indexed: 01/08/2023] Open
Abstract
Purpose Patients with COVID-19 have an increased risk for venous thrombo-embolism (VTE), especially pulmonary embolism. The exact prevalence of asymptomatic DVT is not known, as is the usefulness of screening for DVT in patients admitted to ward with COVID-19. We have studied the prevalence of asymptomatic DVT. Methods We performed a cross-sectional observational multi-center study at four university medical centers in The Netherlands. All adult patients admitted with COVID-19 to a medical ward were eligible for inclusion, including patients who were transferred back from the ICU to the ward. The study protocol consisted of weekly cross-sectional rounds of compression ultrasound. Results In total, 125 patients were included in the study. A significant proportion of patients (N = 34 (27%)) had developed a VTE during their admission for COVID-19 before the study ultrasound was performed. In most VTE cases (N = 27 (79%)) this concerned pulmonary embolism. A new asymptomatic DVT was found in 5 of 125 patients (4.0%; 95% CI 1.3–9.1%) (Table 2). Nine patients (7.2%; 95% CI 3.3–13.2%) developed a VTE (all PE) diagnosed within 28 days after the screening US was performed. Conclusion We have shown a low prevalence (4%) of newly discovered asymptomatic DVT outside the ICU-setting in COVID-19 patients. Despite this low prevalence, nine patients developed PE (7%) within 28 days after ultrasound. This favors the hypothesis of local thrombus formation in the lungs. Based on our findings and literature, we do not recommend US-screening of asymptomatic patients with COVID-19 admitted to the ward.
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Affiliation(s)
- T J Olgers
- Department of Internal Medicine, Section Acute Internal Medicine, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 970 RD, Groningen, The Netherlands.
| | - A W E Lieveld
- General and Acute Internal Medicine Department of Internal Medicine, Amsterdam Public Health Research Institute, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - B Kok
- Section Acute Internal Medicine, Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - J Heijmans
- General and Acute Internal Medicine Department of Internal Medicine, Amsterdam Public Health Research Institute, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - D Salet
- General and Acute Internal Medicine Department of Internal Medicine, Amsterdam Public Health Research Institute, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - N L Assman
- Section Acute Internal Medicine, Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - D F Postma
- Department of Internal Medicine, Infectious Diseases Service, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - M P Bauer
- Department of Internal Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - P W B Nanayakkara
- General and Acute Internal Medicine Department of Internal Medicine, Amsterdam Public Health Research Institute, Amsterdam University Medical Center, Amsterdam, The Netherlands
| | - K Meijer
- Department of Haematology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - F H Bosch
- Section Acute Internal Medicine, Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - H Kooistra
- Department of Haematology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Özhan A, Bastopcu M. Factors Associated with Positive Thrombus Findings at Ultrasonography in Covid-19 Ward Patients who Underwent Imaging for Suspected DVT Under Prophylactic Anticoagulation. J Vasc Surg Venous Lymphat Disord 2022; 10:811-817. [PMID: 35218956 PMCID: PMC8864886 DOI: 10.1016/j.jvsv.2022.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 02/14/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The incidence of deep vein thrombosis (DVT) is increased in Covid-19 patients and its presence is associated with worse outcomes. Ultrasound (USG) examination of Covid-19 patients suspected DVT is challenging due to concerns with disease transmission, while timely initiation of therapeutic anticoagulation is essential. This study aimed to identify patient factors associated with positive thrombus findings at ultrasonography in Covid-19 ward patients who underwent imaging for suspected DVT. METHOD Patients that did not require intensive care unit treatment, who underwent ultrasound imaging for suspected DVT between March - December 2020 were retrospectively included. Patient demographics, comorbidities, modified Well's score, and D-Dimer results on the day of ultrasound were recorded. Parameters for a higher likelihood of a positive DVT result were determined by comparing patients with confirmed DVT at USG and patients with negative USG findings. To determine a cut-off for D-Dimer levels a ROC curve was constructed. The sensitivity and specificity of the determined high-risk factors in the prediction of positive USG results were calculated. RESULTS A positive history for DVT (25% vs 4%, p<0.001), thrombophilia (9% vs 2%, p=0.048), immobilization (53% vs 23%, p=0.001), and a Well's score ≥ 2 (50% vs 21%, p=0.001) were more frequent in patients with DVT. Mean D-Dimer levels were higher in patients with DVT (3871 ± 1805 vs 2075 ± 1543, p<0.001). The presence of either thrombophilia or D-Dimer > 2020 had a sensitivity of 93% and a specificity of 64%. The presence of either thrombophilia, D-Dimer > 2020, or a Well's score ≥ 2 had a sensitivity of 100% and a specificity of 51%. CONCLUSION Covid-19 patients with D-Dimer > 2020, a positive history for thrombophilia, and a Well's score ≥ 2 should undergo a timely ultrasound examination. The high risk of DVT should be remembered for all hospitalized Covid-19 patients.
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Epelboin S, Labrosse J, De Mouzon J, Fauque P, Gervoise-Boyer MJ, Levy R, Sermondade N, Hesters L, Bergère M, Devienne C, Jonveaux P, Ghosn J, Pessione F. Obstetrical outcomes and maternal morbidities associated with COVID-19 in pregnant women in France: A national retrospective cohort study. PLoS Med 2021; 18:e1003857. [PMID: 34847147 PMCID: PMC8631654 DOI: 10.1371/journal.pmed.1003857] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 10/28/2021] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND To the best of our knowledge, no study has exhaustively evaluated the association between maternal morbidities and Coronavirus Disease 2019 (COVID-19) during the first wave of the pandemic in pregnant women. We investigated, in natural conceptions and assisted reproductive technique (ART) pregnancies, whether maternal morbidities were more frequent in pregnant women with COVID-19 diagnosis compared to pregnant women without COVID-19 diagnosis during the first wave of the COVID-19 pandemic. METHODS AND FINDINGS We conducted a retrospective analysis of prospectively collected data in a national cohort of all hospitalizations for births ≥22 weeks of gestation in France from January to June 2020 using the French national hospitalization database (PMSI). Pregnant women with COVID-19 were identified if they had been recorded in the database using the ICD-10 (International Classification of Disease) code for presence of a hospitalization for COVID-19. A total of 244,645 births were included, of which 874 (0.36%) in the COVID-19 group. Maternal morbidities and adverse obstetrical outcomes among those with or without COVID-19 were analyzed with a multivariable logistic regression model adjusted on patient characteristics. Among pregnant women, older age (31.1 (±5.9) years old versus 30.5 (±5.4) years old, respectively, p < 0.001), obesity (0.7% versus 0.3%, respectively, p < 0.001), multiple pregnancy (0.7% versus 0.4%, respectively, p < 0.001), and history of hypertension (0.9% versus 0.3%, respectively, p < 0.001) were more frequent with COVID-19 diagnosis. Active smoking (0.2% versus 0.4%, respectively, p < 0.001) and primiparity (0.3% versus 0.4%, respectively, p < 0.03) were less frequent with COVID-19 diagnosis. Frequency of ART conception was not different between those with and without COVID-19 diagnosis (p = 0.28). When compared to the non-COVID-19 group, women in the COVID-19 group had a higher frequency of admission to ICU (5.9% versus 0.1%, p < 0.001), mortality (0.2% versus 0.005%, p < 0.001), preeclampsia/eclampsia (4.8% versus 2.2%, p < 0.001), gestational hypertension (2.3% versus 1.3%, p < 0.03), postpartum hemorrhage (10.0% versus 5.7%, p < 0.001), preterm birth at <37 weeks of gestation (16.7% versus 7.1%, p < 0.001), <32 weeks of gestation (2.2% versus 0.8%, p < 0.001), <28 weeks of gestation (2.4% versus 0.8%, p < 0.001), induced preterm birth (5.4% versus 1.4%, p < 0.001), spontaneous preterm birth (11.3% versus 5.7%, p < 0.001), fetal distress (33.0% versus 26.0%, p < 0.001), and cesarean section (33.0% versus 20.2%, p < 0.001). Rates of pregnancy terminations ≥22 weeks of gestation, stillbirths, gestational diabetes, placenta praevia, and placenta abruption were not significantly different between the COVID-19 and non-COVID-19 groups. The number of venous thromboembolic events was too low to perform statistical analysis. A limitation of this study relies in the possibility that asymptomatic infected women were not systematically detected. CONCLUSIONS We observed an increased frequency of pregnant women with maternal morbidities and diagnosis of COVID-19 compared to pregnant women without COVID-19. It appears essential to be aware of this, notably in populations at known risk of developing a more severe form of infection or obstetrical morbidities and in order for obstetrical units to better inform pregnant women and provide the best care. Although causality cannot be determined from these associations, these results may be in line with recent recommendations in favor of vaccination for pregnant women.
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Affiliation(s)
- Sylvie Epelboin
- Centre d’Assistance Médicale à la Procréation, gynécologie obstétrique, médecine de la reproduction, hôpital Bichat Claude-Bernard, AP–HP, Nord, Université de Paris, Paris, France
| | - Julie Labrosse
- Centre d’Assistance Médicale à la Procréation, gynécologie obstétrique, médecine de la reproduction, hôpital Bichat Claude-Bernard, AP–HP, Nord, Université de Paris, Paris, France
| | | | - Patricia Fauque
- Université Bourgogne Franche-Comté—INSERM UMR1231, Dijon, France
| | | | - Rachel Levy
- Inserm, équipe lipodystrophies génétiques et acquises, service de biologie de la reproduction-CECOS, Saint-Antoine research center, Sorbonne université, Paris, France
- Hôpital Tenon, AP–HP, Sorbonne université, Paris, France
| | | | - Laetitia Hesters
- Hôpital Antoine Béclère, AP–HP, Université de Paris, Clamart, France
| | | | | | | | - Jade Ghosn
- Service de Maladies Infectieuses et Tropicales, Hôpital Bichat Claude-Bernard, AP–HP, Nord, Université de Paris, Paris, France
- INSERM U1137, IAME, Faculté de Médecine site Bichat, Université de Paris, Paris, France
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Cicco S, Vacca A, Cariddi C, Carella R, Altamura G, Solimando AG, Lauletta G, Pappagallo F, Cirulli A, Stragapede A, Susca N, Grasso S, Ria R. Imaging Evaluation of Pulmonary and Non-Ischaemic Cardiovascular Manifestations of COVID-19. Diagnostics (Basel) 2021; 11:1271. [PMID: 34359355 DOI: 10.3390/diagnostics11071271] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/06/2021] [Accepted: 07/12/2021] [Indexed: 02/06/2023] Open
Abstract
Coronavirus Disease 2019 (COVID-19) has been a pandemic challenge for the last year. Cardiovascular disease is the most described comorbidity in COVID-19 patients, and it is related to the disease severity and progression. COVID-19 induces direct damage on cardiovascular system, leading to arrhythmias and myocarditis, and indirect damage due to endothelial dysfunction and systemic inflammation with a high inflammatory burden. Indirect damage leads to myocarditis, coagulation abnormalities and venous thromboembolism, Takotsubo cardiomyopathy, Kawasaki-like disease and multisystem inflammatory syndrome in children. Imaging can support the management, assessment and prognostic evaluation of these patients. Ultrasound is the most reliable and easy to use in emergency setting and in the ICU as a first approach. The focused approach is useful in management of these patients due its ability to obtain quick and focused results. This tool is useful to evaluate cardiovascular disease and its interplay with lungs. However, a detailed echocardiography evaluation is necessary in a complete assessment of cardiovascular involvement. Computerized tomography is highly sensitive, but it might not always be available. Cardiovascular magnetic resonance and nuclear imaging may be helpful to evaluate COVID-19-related myocardial injury, but further studies are needed. This review deals with different modalities of imaging evaluation in the management of cardiovascular non-ischaemic manifestations of COVID-19, comparing their use in emergency and in intensive care.
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Fares Y, Sinzogan-Eyoum YC, Billoir P, Bogaert A, Armengol G, Alexandre K, Lammens J, Grall M, Levesque H, Benhamou Y, Miranda S. Systematic screening for a proximal DVT in COVID-19 hospitalized patients: Results of a comparative study. J Med Vasc 2021; 46:163-170. [PMID: 34238510 PMCID: PMC8118667 DOI: 10.1016/j.jdmv.2021.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/06/2021] [Indexed: 02/07/2023]
Abstract
INTRODUCTION The COVID-19 pandemic is associated with a high incidence of venous thromboembolism questioning the utility of a systematic screening for deep venous thrombosis (DVT) in hospitalised patients. METHODS In this prospective bicentric controlled study, 4-point ultrasound using a pocket device was used to screen for DVT, in patients with SARS-CoV-2 infection and controls admitted for acute medical illness not related to COVID-19 hospitalised in general ward, in order to assess the utility of a routine screening and to estimate the prevalence of VTE among those patients. RESULTS Between April and May 2020, 135 patients were screened, 69 in the COVID+ group and 66 in the control one. There was no significant difference in the rate of proximal DVT between the two groups (2.2% vs. 1.5%; P=0.52), despite the high rate of PE diagnosed among COVID-19 infected patients (10.1% vs. 1.5%, P=0.063). No isolated DVT was detected, 37.5% of PE was associated with DVT. Mortality (7.2% vs. 1.5%) was not different (P=0.21) between COVID-19 patients and controls. CONCLUSION The systematic screening for proximal DVT was not found to be relevant among COVID-19 patients hospitalized in general ward despite the increase of VTE among this population. Further studies are needed to confirm the hypothesis of a local pulmonary thrombosis which may lead to new therapeutic targets.
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Affiliation(s)
- Y Fares
- Department of internal medicine, Rouen university hospital, 76000 Rouen, France
| | - Y C Sinzogan-Eyoum
- Department of internal medicine, Rouen university hospital, 76000 Rouen, France
| | - P Billoir
- Department of vascular haemostasis, Rouen university hospital, Normandie university, 76000 Rouen, France
| | - A Bogaert
- Department of internal medicine, Rouen university hospital, 76000 Rouen, France
| | - G Armengol
- UNIROUEN, Inserm U1096 EnVI, department of internal medicine, Rouen university hospital, Normandie university, 76000 Rouen, France
| | - K Alexandre
- Department of infectious diseases, Rouen university hospital, 76000 Rouen, France
| | - J Lammens
- Department of internal medicine, Rouen university hospital, 76000 Rouen, France
| | - M Grall
- Department of internal medicine, Rouen university hospital, 76000 Rouen, France; Department of medical intensive care unit, Rouen university hospital, 76000 Rouen, France
| | - H Levesque
- UNIROUEN, Inserm U1096 EnVI, department of internal medicine, Rouen university hospital, Normandie university, 76000 Rouen, France
| | - Y Benhamou
- UNIROUEN, Inserm U1096 EnVI, department of internal medicine, Rouen university hospital, Normandie university, 76000 Rouen, France
| | - S Miranda
- UNIROUEN, Inserm U1096 EnVI, department of internal medicine, Rouen university hospital, Normandie university, 76000 Rouen, France.
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Rad F, Dabbagh A, Dorgalaleh A, Biswas A. The Relationship between Inflammatory Cytokines and Coagulopathy in Patients with COVID-19. J Clin Med 2021; 10:jcm10092020. [PMID: 34065057 PMCID: PMC8125898 DOI: 10.3390/jcm10092020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 12/17/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19), with a broad range of clinical and laboratory findings, is currently the most prevalent medical challenge worldwide. In this disease, hypercoagulability and hyperinflammation, two common features, are accompanied by a higher rate of morbidity and mortality. We assessed the association between baseline inflammatory cytokine levels and coagulopathy and disease outcome in COVID-19. One hundred and thirty-seven consecutive patients hospitalized with COVID-19 were selected for the study. Baseline interleukin-1 (IL-1), IL-6, and tumor necrosis factor alpha (TNF-α) level were measured at time of admission. At the same time, baseline coagulation parameters were also assessed during the patient’s hospitalization. Clinical findings, including development of thrombosis and clinical outcome, were recorded prospectively. Out of 136 patients, 87 (~64%) had increased cytokine levels (one or more cytokines) or abnormal coagulation parameters. Among them, 58 (~67%) had only increased inflammatory cytokines, 12 (~14%) had only coagulation abnormalities, and 17 (19.5%) had concomitant abnormalities in both systems. It seems that a high level of inflammatory cytokines at admission points to an increased risk of developing coagulopathy, thrombotic events, even death, over the course of COVID-19. Early measurement of these cytokines, and timely co-administration of anti-inflammatories with anticoagulants could decrease thrombotic events and related fatal consequences.
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Affiliation(s)
- Fariba Rad
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj 7591994799, Iran
- Correspondence:
| | - Ali Dabbagh
- Anesthesia Research Center, Shahid Beheshti University of Medical Sciences, Tehran 1998734383, Iran;
| | - Akbar Dorgalaleh
- Department of Hematology and Blood Transfusion, School of Allied Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran;
| | - Arijit Biswas
- Institute of Experimental Hematology and Transfusion Medicine, University of Bonn, 53127 Bonn, Germany;
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