Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 988
Filter
1.
J Am Heart Assoc ; 13(9): e034516, 2024 May 07.
Article in English | MEDLINE | ID: mdl-38700025

ABSTRACT

BACKGROUND: Extracorporeal cardiopulmonary resuscitation improves outcomes after out-of-hospital cardiac arrest. However, bleeding and thrombosis are common complications. We aimed to describe the incidence and predictors of bleeding and thrombosis and their association with in-hospital mortality. METHODS AND RESULTS: Consecutive patients presenting with refractory ventricular tachycardia/ventricular fibrillation out-of-hospital cardiac arrest between December 2015 and March 2022 who met the criteria for extracorporeal cardiopulmonary resuscitation initiation at our center were included. Major bleeding was defined by the Extracorporeal Life Support Organization's criteria. Adjusted analyses were done to seek out risk factors for bleeding and thrombosis and evaluate their association with mortality. Major bleeding occurred in 135 of 200 patients (67.5%), with traumatic bleeding from cardiopulmonary resuscitation in 73 (36.5%). Baseline demographics and arrest characteristics were similar between groups. In multivariable analysis, decreasing levels of fibrinogen were independently associated with bleeding (adjusted hazard ratio [aHR], 0.98 per every 10 mg/dL rise [95% CI, 0.96-0.99]). Patients who died had a higher rate of bleeds per day (0.21 versus 0.03, P<0.001) though bleeding was not significantly associated with in-hospital death (aHR, 0.81 [95% CI. 0.55-1.19]). A thrombotic event occurred in 23.5% (47/200) of patients. Venous thromboembolism occurred in 11% (22/200) and arterial thrombi in 15.5% (31/200). Clinical characteristics were comparable between groups. In adjusted analyses, no risk factors for thrombosis were identified. Thrombosis was not associated with in-hospital death (aHR, 0.65 [95% CI, 0.42-1.03]). CONCLUSIONS: Bleeding is a frequent complication of extracorporeal cardiopulmonary resuscitation that is associated with decreased fibrinogen levels on admission whereas thrombosis is less common. Neither bleeding nor thrombosis was significantly associated with in-hospital mortality.


Subject(s)
Cardiopulmonary Resuscitation , Extracorporeal Membrane Oxygenation , Hemorrhage , Hospital Mortality , Out-of-Hospital Cardiac Arrest , Tachycardia, Ventricular , Thrombosis , Ventricular Fibrillation , Humans , Male , Female , Out-of-Hospital Cardiac Arrest/therapy , Out-of-Hospital Cardiac Arrest/mortality , Middle Aged , Thrombosis/etiology , Thrombosis/epidemiology , Thrombosis/mortality , Tachycardia, Ventricular/therapy , Tachycardia, Ventricular/epidemiology , Tachycardia, Ventricular/mortality , Tachycardia, Ventricular/etiology , Cardiopulmonary Resuscitation/adverse effects , Cardiopulmonary Resuscitation/methods , Ventricular Fibrillation/mortality , Ventricular Fibrillation/therapy , Ventricular Fibrillation/epidemiology , Extracorporeal Membrane Oxygenation/adverse effects , Extracorporeal Membrane Oxygenation/methods , Risk Factors , Incidence , Retrospective Studies , Aged , Hemorrhage/mortality , Hemorrhage/etiology , Hemorrhage/epidemiology , Treatment Outcome
3.
Clin Res Cardiol ; 113(6): 942-950, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38446151

ABSTRACT

BACKGROUND: Growing evidence showing that systemic autoimmune diseases (SADs) are associated with a high risk of atrial fibrillation (AF). However, the impact of SAD on the clinical course of AF patients is largely unknown. METHODS: Retrospective cohort study within a federated healthcare network (TriNetX). Using ICD codes, AF patients on anticoagulant therapy were categorized according to the presence of SAD (M32: Systemic Lupus Erythematosus (SLE); M33: Dermato-polymyositis (DMP); M34: Systemic Sclerosis (SSc); M35: Sjogren syndrome). The primary outcomes were the 5-year risks of (1) all-cause death, (2) thrombotic events (ischemic stroke, acute myocardial infarction, deep vein thrombosis, and pulmonary embolism), and (3) bleeding (intracranial (ICH) and gastrointestinal (GI)). Secondary outcomes were each component of the primary outcomes. Cox regression analysis after propensity score matching (PSM) was used to estimate hazard ratio (HR) and 95% confidence interval (95%CI). RESULTS: We identified 16,098 AF patients with SAD (68.2 ± 13.4 years; 71.0% female) and 828,772 AF controls (70.7 ± 12.9 years, 41.1% females). After PSM, AF patients with SAD were associated with a higher risk of all-cause death (HR 1.13, 95%CI 1.09-1.71), thrombotic events (HR 1.37, 95%CI 1.32-1.43), and hemorrhagic events (HR 1.41, 95%CI 1.33-1.50) compared to AF controls without SAD. The highest risk of all-cause death and GI bleeding was associated with SSc, while the highest risk of thrombotic events and ICH was associated with SLE. CONCLUSION: AF patients with SAD are associated with a high risk of all-cause death, thrombotic, and hemorrhagic events. These patients merit careful follow-up and integrated care management to improve their prognosis.


Subject(s)
Anticoagulants , Atrial Fibrillation , Autoimmune Diseases , Hemorrhage , Thrombosis , Humans , Female , Male , Atrial Fibrillation/complications , Atrial Fibrillation/mortality , Atrial Fibrillation/drug therapy , Retrospective Studies , Aged , Anticoagulants/therapeutic use , Anticoagulants/adverse effects , Autoimmune Diseases/complications , Autoimmune Diseases/mortality , Hemorrhage/chemically induced , Hemorrhage/mortality , Thrombosis/mortality , Thrombosis/etiology , Thrombosis/epidemiology , Risk Factors , Risk Assessment/methods , Cause of Death/trends , Middle Aged , Follow-Up Studies , Survival Rate/trends
4.
Scand J Clin Lab Invest ; 84(2): 84-90, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38414267

ABSTRACT

Secondary polycythemia is commonly observed among patients with chronic pulmonary diseases. However, its significance in the context of Coronavirus disease 2019 (COVID-19) is unknown. We retrospectively evaluated a total of 5872 hospitalized COVID-19 patients with mostly severe and critical symptoms, and without prior or subsequently diagnosed myeloproliferative neoplasm. Patients were stratified based on admission hemoglobin into four subgroups: anemia (hemoglobin <120 g/L for females and 130 g/L for males), normal hemoglobin, mild (hemoglobin 160-165 g/L for females and 165-185 g/L for males) and severe polycythemia (hemoglobin >165 g/L for females and >185 g/L for males). Among 5872 patients, a total of 158 (2.7%) had mild and 25 (0.4%) severe polycythemia. Polycythemia was significantly associated with higher respiratory and functional impairment, reduced plasma volume, higher serum osmolarity and comorbidity burden specific to the degree of polycythemia. Patients presenting with mild (odds ratio (OR) = 1.63, p = .003) and severe polycythemia (OR = 4.98, p < .001) had increased risk of death in comparison to patients with normal hemoglobin, whereas no significant associations with venous thromboembolism, arterial thrombosis nor major bleeding were observed. Anemia was associated with higher risk of death (OR = 1.42, p < .001), venous thromboembolism (OR = 1.34, p < .006) and major bleeding (OR = 2.27, p < .001) in comparison to normal hemoglobin. Associations of polycythemia and anemia with mortality diminished, and anemia with venous thromboembolism and major bleeding persisted, after multivariate adjustments for age, sex, comorbidities, COVID-19 severity and functional status. Secondary polycythemia in hospitalized COVID-19 patients without prior of subsequently diagnosed myeloproliferative neoplasm is rare and is associated with high mortality, increasing with degree of polycythemia, but not markedly higher thrombotic risk.


Subject(s)
COVID-19 , Polycythemia , Thrombosis , Humans , COVID-19/complications , COVID-19/mortality , COVID-19/blood , Polycythemia/blood , Polycythemia/complications , Female , Male , Middle Aged , Aged , Retrospective Studies , Thrombosis/mortality , Thrombosis/etiology , Risk Factors , SARS-CoV-2 , Aged, 80 and over , Comorbidity , Hemoglobins/analysis , Hemoglobins/metabolism
6.
BMJ Open ; 12(2): e051624, 2022 02 25.
Article in English | MEDLINE | ID: mdl-35217534

ABSTRACT

BACKGROUND: The mortality rate of COVID-19 is elevated in males compared with females. OBJECTIVE: Determine the extent that the elevated thrombotic risk in males relative to females contributes to excess COVID-19 mortality in males. DESIGN: Observational study. SETTING: Data sourced from electronic medical records from over 200 US hospital systems. PARTICIPANTS: 60 877 patients aged 18 years and older hospitalised with COVID-19. EXPOSURE: Exposure variable: biological sex; key variable of interest: thrombosis. PRIMARY OUTCOME MEASURES: Primary outcome was COVID-19 mortality. We measured: (1) mortality rate of males relative to females, (2) rate of thrombotic diagnoses occurring during hospitalisation for COVID-19 in both sexes and (3) mortality rate when evidence of thrombosis was present. RESULTS: The COVID-19 mortality rate of males was 29.9% higher than that of females. Males had a 35.8% higher rate of receiving a thrombotic diagnosis compared with females. The mortality rate of all patients with a thrombotic diagnosis was 40.0%-over twice that of patients with COVID-19 without a thrombotic diagnosis (adjusted OR 2.50 (2.37 to 2.64), p<0.001). When defining thrombosis as either a documented thrombotic diagnosis or a D-dimer level ≥3.0 µg/mL, 16.4% of the excess mortality in male patients could be explained by increased thrombotic risk. CONCLUSIONS: Our findings suggest the higher COVID-19 mortality rate in males may be significantly accounted for by the elevated risk of thrombosis among males. Understanding the mechanisms that underlie increased male thrombotic risk may allow for the advancement of effective anticoagulation strategies that reduce COVID-19 mortality in males.


Subject(s)
COVID-19 , Thrombosis , Adult , Anticoagulants , COVID-19/complications , COVID-19/mortality , Female , Hospital Mortality , Hospitalization , Humans , Male , SARS-CoV-2 , Thrombosis/mortality , Thrombosis/virology
7.
Sci Rep ; 12(1): 1417, 2022 01 26.
Article in English | MEDLINE | ID: mdl-35082380

ABSTRACT

Nonvalvular atrial fibrillation (NVAF) and carotid stenosis are important risk factors for stroke. Carotid angioplasty and stent placement (CAS) is recommended for patients with symptomatic high-grade carotid stenosis. The optimal medical management for patients with NVAF after CAS remains unclear. We aimed to clarify this issue using real-world data from the Taiwanese National Health Insurance Research Database (NHIRD). In total, 2116 consecutive NVAF patients who received CAS between January 1, 2010, and December 31, 2016, from NHIRD were divided into groups based on post-procedure medication as follows: only antiplatelet agent (OAP, n = 587); only anticoagulation agent (OAC, n = 477); dual antiplatelet agents (DAP, n = 49); and a combination of antiplatelet and anticoagulation agents (CAPAC, n = 304). Mortality, vascular events, and major bleeding episodes were compared after matching with the Charlson comorbidity index and CHA2DS2-VASc score. The CAPAC and the OAC groups had lower mortality rates than the OAP group (P = 0.0219), with no statistical differences in major bleeding, ischemic stroke, or vascular events. Conclusively, OAC therapy after CAS appears suitable for NVAF patients. CAPAC therapy might be considered as initial therapy or when there is concern about vascular events.


Subject(s)
Angioplasty/methods , Anticoagulants/administration & dosage , Atrial Fibrillation/drug therapy , Carotid Stenosis/drug therapy , Platelet Aggregation Inhibitors/administration & dosage , Thrombosis/prevention & control , Aged , Aged, 80 and over , Angioplasty/mortality , Anticoagulants/adverse effects , Atrial Fibrillation/mortality , Atrial Fibrillation/pathology , Atrial Fibrillation/surgery , Carotid Stenosis/mortality , Carotid Stenosis/pathology , Carotid Stenosis/surgery , Female , Hemorrhage/chemically induced , Hemorrhage/diagnosis , Hemorrhage/physiopathology , Humans , Ischemic Stroke/chemically induced , Ischemic Stroke/diagnosis , Ischemic Stroke/physiopathology , Male , Platelet Aggregation Inhibitors/adverse effects , Retrospective Studies , Stents , Survival Analysis , Thrombosis/mortality , Thrombosis/pathology , Thrombosis/surgery , Treatment Outcome
8.
PLoS One ; 17(1): e0262352, 2022.
Article in English | MEDLINE | ID: mdl-34986205

ABSTRACT

INTRODUCTION: COVID-19 infection has been hypothesized to precipitate venous and arterial clotting events more frequently than other illnesses. MATERIALS AND METHODS: We demonstrate this increased risk of blood clots by comparing rates of venous and arterial clotting events in 4400 hospitalized COVID-19 patients in a large multisite clinical network in the United States examined from April through June of 2020, to patients hospitalized for non-COVID illness and influenza during the same time period and in 2019. RESULTS: We demonstrate that COVID-19 increases the risk of venous thrombosis by two-fold compared to the general inpatient population and compared to people with influenza infection. Arterial and venous thrombosis were both common occurrences among patients with COVID-19 infection. Risk factors for thrombosis included male gender, older age, and diabetes. Patients with venous or arterial thrombosis had high rates of admission to the ICU, re-admission to the hospital, and death. CONCLUSION: Given the ongoing scientific discussion about the impact of clotting on COVID-19 disease progression, these results highlight the need to further elucidate the role of anticoagulation in COVID-19 patients, particularly outside the intensive care unit setting. Additionally, concerns regarding clotting and COVID-19 vaccines highlight the importance of addressing the alarmingly high rate of clotting events during actual COVID-19 infection when weighing the risks and benefits of vaccination.


Subject(s)
COVID-19/pathology , Thrombosis/pathology , Aged , COVID-19/mortality , Cohort Studies , Comorbidity , Female , Hospitalization , Humans , Male , New Jersey , Retrospective Studies , Thrombosis/mortality , United States
9.
BJOG ; 129(3): 402-411, 2022 Feb.
Article in English | MEDLINE | ID: mdl-34455672

ABSTRACT

OBJECTIVE: To apply the iceberg model, quantifying absolute and relative incidence, to the four main causes of maternal morbidity and mortality in Ireland: haemorrhage, hypertension, sepsis and thrombosis. DESIGN: Secondary analysis of national data on maternal morbidity and mortality. SETTING: Republic of Ireland. POPULATION OR SAMPLE: Approximately 715 000 maternities, 1 200 000 maternal hospitalisations, 2138 cases of severe maternal morbidity (SMM) and 54 maternal deaths. METHODS: Incidence rates and case-fatality ratios were calculated. MAIN OUTCOME MEASURES: Maternal death, SMM and hospitalisation. RESULTS: At the 'tip of the iceberg', the incidence of maternal death per 10 000 maternities was 0.09 (95% CI 0.03-0.20) due to thrombosis and 0.03 (95% CI 0-0.11) due to haemorrhage, hypertension disorders or sepsis. For one death due to thrombosis there were 35 cases of pulmonary embolism and 257 thrombosis hospitalisations. For one death due to eclampsia, there were 58 eclampsia cases, 13 040 hospitalisations with pre-existing hypertension and 40 781 hospitalisations with gestational hypertension. For one death due to pregnancy-related sepsis, there were 92 cases of septicaemic shock and 9005 hospitalisations with obstetric sepsis. For one maternal death due to haemorrhage, there were 1029 cases of major obstetric haemorrhage and 53 715 maternal hospitalisations with haemorrhage. For every 100 maternities, there were approximately 16 hospitalisations associated with haemorrhage, 12 associated with hypertension disorders, three with sepsis and 0.2 with thrombosis. CONCLUSIONS: Haemorrhage and hypertension disorders are leading causes of maternal morbidity in Ireland but they have very low case fatality. This indicates that these morbidities are managed effectively but their prevention requires more focus. TWEETABLE ABSTRACT: Study shows that haemorrhage and hypertension are main causes of #maternalmorbidity in Ireland. Timely interventions for #maternalhealth and focus on prevention of severe and non-severe morbidities are needed. @NPEC #maternityservices #clinicalaudit #qualityimprovement.


Subject(s)
Hospitalization/statistics & numerical data , Postpartum Hemorrhage/mortality , Pregnancy Complications/mortality , Sepsis/mortality , Thrombosis/mortality , Adult , Female , Humans , Incidence , Ireland/epidemiology , Maternal Death/etiology , Maternal Mortality , Morbidity , Pregnancy
10.
Thromb Haemost ; 122(1): 131-141, 2022 01.
Article in English | MEDLINE | ID: mdl-33865239

ABSTRACT

BACKGROUND: Thrombotic complications are considered among the main extrapulmonary manifestations of coronavirus disease 2019 (COVID-19). The optimal type and duration of prophylactic antithrombotic therapy in these patients remain unknown. METHODS: This article reports the final (90-day) results of the Intermediate versus Standard-dose Prophylactic anticoagulation In cRitically-ill pATIents with COVID-19: An opeN label randomized controlled trial (INSPIRATION) study. Patients with COVID-19 admitted to intensive care were randomized to intermediate-dose versus standard-dose prophylactic anticoagulation for 30 days, irrespective of hospital discharge status. The primary efficacy outcome was a composite of adjudicated venous or arterial thrombosis, treatment with extracorporeal membrane oxygenation (ECMO), or all-cause death. The main safety outcome was major bleeding. RESULTS: Of 600 randomized patients, 562 entered the modified intention-to-treat analysis (median age [Q1, Q3]: 62 [50, 71] years; 237 [42.2%] women), of whom 336 (59.8%) survived to hospital discharge. The primary outcome occurred in 132 (47.8%) of patients assigned to intermediate dose and 130 (45.4%) patients assigned to standard-dose prophylactic anticoagulation (hazard ratio [HR]: 1.21, 95% confidence interval [CI]: 0.95-1.55, p = 0.11). Findings were similar for other efficacy outcomes, and in the landmark analysis from days 31 to 90 (HR: 1.59, 95% CI: 0.45-5.06). There were 7 (2.5%) major bleeding events in the intermediate-dose group (including 3 fatal events) and 4 (1.4%) major bleeding events in the standard-dose group (none fatal) (HR: 1.82, 95% CI: 0.53-6.24). CONCLUSION: Intermediate-dose compared with standard-dose prophylactic anticoagulation did not reduce a composite of death, treatment with ECMO, or venous or arterial thrombosis at 90-day follow-up.


Subject(s)
Anticoagulants/administration & dosage , COVID-19 Drug Treatment , Enoxaparin/administration & dosage , SARS-CoV-2 , Thrombosis/prevention & control , Aged , Anticoagulants/adverse effects , COVID-19/complications , COVID-19/mortality , Cohort Studies , Critical Care , Dose-Response Relationship, Drug , Enoxaparin/adverse effects , Extracorporeal Membrane Oxygenation , Female , Hemorrhage/chemically induced , Humans , Intensive Care Units , Iran/epidemiology , Kaplan-Meier Estimate , Male , Middle Aged , Pandemics , Thrombosis/etiology , Thrombosis/mortality
11.
Thromb Haemost ; 122(2): 257-266, 2022 02.
Article in English | MEDLINE | ID: mdl-34758488

ABSTRACT

BACKGROUND: It is still unclear if patients with community-acquired pneumonia (CAP) and coronavirus disease 2019 (COVID-19) have different rate, typology, and impact of thrombosis on survival. METHODS: In this multicenter observational cohort study, 1,138 patients, hospitalized for CAP (n = 559) or COVID-19 (n = 579) from seven clinical centers in Italy, were included in the study. Consecutive adult patients (age ≥ 18 years) with confirmed COVID-19-related pneumonia, with or without mechanical ventilation, hospitalized from March 1, 2020 to April 30, 2020, were enrolled. COVID-19 was diagnosed based on the World Health Organization interim guidance. Patients were followed-up until discharge or in-hospital death, registering the occurrence of thrombotic events including ischemic/embolic events. RESULTS: During the in-hospital stay, 11.4% of CAP and 15.5% of COVID-19 patients experienced thrombotic events (p = 0.046). In CAP patients all the events were arterial thromboses, while in COVID-19 patients 8.3% were venous and 7.2% arterial thromboses.During the in-hospital follow-up, 3% of CAP patients and 17% of COVID-19 patients died (p < 0.001). The highest mortality rate was found among COVID-19 patients with thrombotic events (47.6 vs. 13.4% in thrombotic-event-free patients; p < 0.001). In CAP, 13.8% of patients experiencing thrombotic events died versus 1.8% of thrombotic event-free ones (p < 0.001). A multivariable Cox-regression analysis confirmed a higher risk of death in COVID-19 patients with thrombotic events (hazard ratio: 2.1; 95% confidence interval: 1.4-3.3; p < 0.001). CONCLUSION: Compared with CAP, COVID-19 is characterized by a higher burden of thrombotic events, different thrombosis typology and higher risk of thrombosis-related in-hospital mortality.


Subject(s)
COVID-19/epidemiology , Community-Acquired Infections/epidemiology , Pneumonia/epidemiology , SARS-CoV-2/physiology , Thrombosis/epidemiology , Aged , COVID-19/mortality , Cohort Studies , Community-Acquired Infections/mortality , Female , Hospitalization , Humans , Italy/epidemiology , Male , Middle Aged , Pneumonia/mortality , Risk Factors , Survival Analysis , Thrombosis/mortality
12.
Br J Haematol ; 196(3): 566-576, 2022 02.
Article in English | MEDLINE | ID: mdl-34622443

ABSTRACT

Bleeding and thrombosis are major complications in patients supported with extracorporeal membrane oxygenation (ECMO). In this multicentre observational study of 152 consecutive patients (≥18 years) with severe COVID-19 supported by veno-venous (VV) ECMO in four UK commissioned centres during the first wave of the COVID-19 pandemic (1 March to 31 May 2020), we assessed the incidence of major bleeding and thrombosis and their association with 180-day mortality. Median age (range) was 47 years (23-65) and 75% were male. Overall, the 180-day survival was 70·4% (107/152). The rate of major bleeding was 30·9% (47/152), of which intracranial bleeding (ICH) was 34% (16/47). There were 96 thrombotic events (63·1%) consisting of venous 44·7% [68/152 of which 66·2% were pulmonary embolism (PE)], arterial 18·6% (13/152) and ECMO circuit thrombosis 9·9% (15/152). In multivariate analysis, only raised lactate dehydrogenase (LDH) at the initiation of VV ECMO was associated with an increased risk of thrombosis [hazard ratio (HR) 1·92, 95% CI 1·21-3·03]. Major bleeding and ICH were associated with 3·87-fold (95% CI 2·10-7·23) and 5·97-fold [95% confidence interval (CI) 2·36-15·04] increased risk of mortality and PE with a 2·00-fold (95% CI1·09-3·56) risk of mortality. This highlights the difficult balancing act often encountered when managing coagulopathy in COVID-19 patients supported with ECMO.


Subject(s)
COVID-19 , Extracorporeal Membrane Oxygenation , Hemorrhage , SARS-CoV-2/metabolism , Thrombosis , Adult , COVID-19/blood , COVID-19/mortality , COVID-19/therapy , Disease-Free Survival , Female , Hemorrhage/blood , Hemorrhage/mortality , Hemorrhage/therapy , Humans , Male , Middle Aged , Survival Rate , Thrombosis/blood , Thrombosis/mortality , Thrombosis/therapy , United Kingdom/epidemiology
13.
Front Immunol ; 12: 729251, 2021.
Article in English | MEDLINE | ID: mdl-34912330

ABSTRACT

Introduction: The World Health Organization declared the coronavirus disease 2019 (COVID-19) pandemic on March 11, 2020. Two vaccine types were developed using two different technologies: viral vectors and mRNA. Thrombosis is one of the most severe and atypical adverse effects of vaccines. This study aimed to analyze published cases of thrombosis after COVID-19 vaccinations to identify patients' features, potential pathophysiological mechanisms, timing of appearance of the adverse events, and other critical issues. Materials and Methods: We performed a systematic electronic search of scientific articles regarding COVID-19 vaccine-related thrombosis and its complications on the PubMed (MEDLINE) database and through manual searches. We selected 10 out of 50 articles from February 1 to May 5, 2021 and performed a descriptive analysis of the adverse events caused by the mRNA-based Pfizer and Moderna vaccines and the adenovirus-based AstraZeneca vaccine. Results: In the articles on the Pfizer and Moderna vaccines, the sample consisted of three male patients with age heterogeneity. The time from vaccination to admission was ≤3 days in all cases; all patients presented signs of petechiae/purpura at admission, with a low platelet count. In the studies on the AstraZeneca vaccine, the sample consisted of 58 individuals with a high age heterogeneity and a high female prevalence. Symptoms appeared around the ninth day, and headache was the most common symptom. The platelet count was below the lower limit of the normal range. All patients except one were positive for PF4 antibodies. The cerebral venous sinus was the most affected site. Death was the most prevalent outcome in all studies, except for one study in which most of the patients remained alive. Discussion: Vaccine-induced thrombotic thrombocytopenia (VITT) is an unknown nosological phenomenon secondary to inoculation with the COVID-19 vaccine. Several hypotheses have been formulated regarding its physiopathological mechanism. Recent studies have assumed a mechanism that is assimilable to heparin-induced thrombocytopenia, with protagonist antibodies against the PF4-polyanion complex. Viral DNA has a negative charge and can bind to PF4, causing VITT. New experimental studies have assumed that thrombosis is related to a soluble adenoviral protein spike variant, originating from splicing events, which cause important endothelial inflammatory events, and binding to endothelial cells expressing ACE2. Conclusion: Further studies are needed to better identify VITT's pathophysiological mechanisms and genetic, demographic, or clinical predisposition of high-risk patients, to investigate the correlation of VITT with the different vaccine types, and to test the significance of the findings.


Subject(s)
2019-nCoV Vaccine mRNA-1273/immunology , BNT162 Vaccine/immunology , COVID-19/immunology , ChAdOx1 nCoV-19/immunology , SARS-CoV-2/physiology , Thrombosis/epidemiology , 2019-nCoV Vaccine mRNA-1273/adverse effects , Antigen-Antibody Complex/metabolism , BNT162 Vaccine/adverse effects , COVID-19/complications , COVID-19/epidemiology , Cerebral Veins/metabolism , Cerebral Veins/pathology , ChAdOx1 nCoV-19/adverse effects , Female , Headache , Humans , Mass Vaccination , Platelet Factor 4/immunology , Sex Factors , Survival Analysis , Thrombosis/etiology , Thrombosis/mortality
14.
Clin Appl Thromb Hemost ; 27: 10760296211051764, 2021.
Article in English | MEDLINE | ID: mdl-34755565

ABSTRACT

The precise mechanisms of pathology in severe COVID-19 remains elusive. Current evidence suggests that inflammatory mediators are responsible for the manifestation of clinical symptoms that precedes a fatal response to infection. This review examines the nature of platelet activating factor and emphasizes the similarities between the physiological effects of platelet activating factor and the clinical complications of severe COVID-19.


Subject(s)
COVID-19/metabolism , Platelet Activating Factor/metabolism , Animals , COVID-19/complications , COVID-19/mortality , COVID-19/pathology , Humans , Inflammation/complications , Inflammation/metabolism , Inflammation/mortality , Inflammation/pathology , Multiple Organ Failure/complications , Multiple Organ Failure/metabolism , Multiple Organ Failure/mortality , Multiple Organ Failure/pathology , Respiratory Distress Syndrome/complications , Respiratory Distress Syndrome/metabolism , Respiratory Distress Syndrome/mortality , Respiratory Distress Syndrome/pathology , SARS-CoV-2/physiology , Severity of Illness Index , Thrombosis/complications , Thrombosis/metabolism , Thrombosis/mortality , Thrombosis/pathology
15.
J Cardiovasc Surg (Torino) ; 62(6): 535-541, 2021 Dec.
Article in English | MEDLINE | ID: mdl-34581553

ABSTRACT

The acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the COVID-19 disease, a global pandemic. A strong association has been documented between COVID-19 and cardiovascular events, although the exact pathophysiological mechanism is still unclear. Carotid atherothrombosis and ischemic stroke represents one of the possible severe manifestations of COVID-19, as a leading cause of long-term disability and death. Different complex intertwined mechanisms seem to underlie the endothelitis which is the cause of multiple cardiovascular manifestations. To date, few case series describing COVID-19 and acute ischemic stroke caused by cervical carotid thrombosis have been published. All the patients shared common similar radiographic features, comorbidities, and biomarker profiles. The aim of this brief review was to analyze the impact of COVID-19 pandemic in the management of a Vascular Surgery Department, changing the daily vascular practice, as well as to provide practical suggestions for symptomatic carotid stenosis, while reviewing published literature.


Subject(s)
COVID-19/epidemiology , Carotid Artery Diseases/epidemiology , Ischemic Stroke/epidemiology , Thrombosis/epidemiology , COVID-19/diagnosis , COVID-19/mortality , COVID-19/therapy , Carotid Artery Diseases/diagnosis , Carotid Artery Diseases/mortality , Carotid Artery Diseases/surgery , Humans , Ischemic Stroke/diagnosis , Ischemic Stroke/mortality , Ischemic Stroke/surgery , Risk Assessment , Risk Factors , Thrombosis/diagnosis , Thrombosis/mortality , Thrombosis/surgery , Treatment Outcome , Vascular Surgical Procedures
16.
Cardiovasc Diabetol ; 20(1): 191, 2021 09 22.
Article in English | MEDLINE | ID: mdl-34551784

ABSTRACT

A prothrombotic state is a typical feature of type 2 diabetes mellitus (T2DM). Apart from increased platelet reactivity, endothelial dysfunction, hyperfibrinogenemia, and hypofibrinolysis are observed in T2DM. A variety of poorly elucidated mechanisms behind impaired fibrinolysis in this disease have been reported, indicating complex associations between platelet activation, fibrin formation and clot structure, and fibrinolysis inhibitors, in particular, elevated plasminogen antigen inhibitor-1 levels which are closely associated with obesity. Abnormal fibrin clot structure is of paramount importance for relative resistance to plasmin-mediated lysis in T2DM. Enhanced thrombin generation, a proinflammatory state, increased release of neutrophil extracellular traps, elevated complement C3, along with posttranslational modifications of fibrinogen and plasminogen have been regarded to contribute to altered clot structure and impaired fibrinolysis in T2DM. Antidiabetic agents such as metformin and insulin, as well as antithrombotic agents, including anticoagulants, have been reported to improve fibrin properties and accelerate fibrinolysis in T2DM. Notably, recent evidence shows that hypofibrinolysis, assessed in plasma-based assays, has a predictive value in terms of cardiovascular events and cardiovascular mortality in T2DM patients. This review presents the current data on the mechanisms underlying arterial and venous thrombotic complications in T2DM patients, with an emphasis on hypofibrinolysis and its impact on clinical outcomes. We also discuss potential modulators of fibrinolysis in the search for optimal therapy in diabetic patients.


Subject(s)
Diabetes Mellitus, Type 2/blood , Fibrinolysis , Thrombosis/blood , Animals , Blood Platelets/metabolism , Complement C3/metabolism , Diabetes Mellitus, Type 2/complications , Diabetes Mellitus, Type 2/drug therapy , Diabetes Mellitus, Type 2/mortality , Extracellular Traps/metabolism , Fibrinolysis/drug effects , Fibrinolytic Agents/therapeutic use , Humans , Hypoglycemic Agents/therapeutic use , Inflammation Mediators/blood , Prognosis , Thrombosis/drug therapy , Thrombosis/etiology , Thrombosis/mortality
17.
Kobe J Med Sci ; 67(1): E10-E17, 2021 Jun 18.
Article in English | MEDLINE | ID: mdl-34344853

ABSTRACT

The prognosis of hepatocellular carcinoma (HCC) presenting with inferior vena cava tumor thrombus (IVCTT) is extremely poor. The aim of this study was to reveal the postoperative course and to identify patients who have survived surgical hepatectomy among HCC patients with IVCTT. Between January 2006 and December 2018, 643 patients underwent surgical hepatectomy for HCC at Kobe University Hospital. Among them, 20 patients were categorized as Vv3 according to the Japanese staging system. We retrospectively collected detailed data on these patients. The statistical, clinical, and pathological data were recorded prospectively and analyzed retrospectively. The median survival time was 9.8 months. Among all patients, 11 (55%) achieved R0 resection, and only two survivors were from this group. The number of tumors (solitary vs. multiple; p=0.050) and pathological Vp (pVp0 vs. other; p=0.009) were identified as risk factors for overall survival in the univariate analysis. In the multivariate analysis, pathological Vp (pVp0 vs. other; p=0.037) was identified as a significant prognostic factor for survival. Pathological Vp affected overall survival among IVCTT patients; the median survival time was 53.7 months with pVp0, 10.2 months with pVp1, and 8.8 months with pVp2-4 (p=0.035). For patients with IVCTT, surgical hepatectomy should be indicated only for those who do not have portal vein invasion and could achieve R0 resection.


Subject(s)
Carcinoma, Hepatocellular/surgery , Hepatectomy/adverse effects , Liver Neoplasms/surgery , Portal Vein/physiopathology , Thrombosis/surgery , Vena Cava, Inferior/surgery , Adult , Aged , Aged, 80 and over , Carcinoma, Hepatocellular/mortality , Female , Humans , Male , Middle Aged , Postoperative Complications , Prognosis , Retrospective Studies , Thrombosis/etiology , Thrombosis/mortality , Treatment Outcome , Vena Cava, Inferior/diagnostic imaging
18.
J Am Coll Cardiol ; 78(8): 811-824, 2021 08 24.
Article in English | MEDLINE | ID: mdl-34412815

ABSTRACT

BACKGROUND: There is a lack of knowledge in the current medical literature about native aortic valve thrombosis. OBJECTIVES: The aim of this systematic review was to summarize the characteristics, presentations, underlying etiologies, and outcomes of native aortic valve thrombosis and to present a meta-analysis of the best available data. METHODS: The authors performed a literature search, identified published cases of patients with native aortic valve thrombosis, and pooled the data in this meta-analysis. The statistical analysis included calculations of the prevalence of the various presentations, underlying etiologies, aortic cusp involvement, as well as choices of diagnostic testing. They calculated the sensitivities of the various diagnostic testing as well as in-hospital mortality event rates and the univariate ORs of the risk factors for poor outcomes. RESULTS: The search strategy and screening process yielded 74 cases of native aortic valve thrombosis, which are included in this meta-analysis. The data revealed that the most common presentation was myocardial infarction in 36%, and the most common underlying etiology was hypercoagulable state in 30%. In-hospital clinical deterioration after presentation including recurrent embolism occurred in ∼38%, and in-hospital mortality rate was ∼20%. CONCLUSIONS: Native aortic valve thrombosis is clinically relevant, especially in patients presenting with embolic events. Awareness about native aortic valve or root thrombosis as well as its underlying etiologies, diagnostic work-up, and management is essential, because this condition can be associated with poor outcomes.


Subject(s)
Aortic Valve Disease/mortality , Thrombosis/mortality , Aortic Valve Disease/etiology , Hospital Mortality , Humans , Thrombosis/etiology
19.
Ann Vasc Surg ; 77: 243-254, 2021 Nov.
Article in English | MEDLINE | ID: mdl-34437971

ABSTRACT

OBJECTIVES: The aim of this study was to test the hypothesis that endovascular aspiration thrombectomy of right atrial thrombus (RAT) using the AngioVac device is as safe and effective in patients with cancer as those without cancer. BACKGROUND: RAT is a uniquely challenging clinical presentation of venous thromboembolism due to its low incidence and historically high-risk of mortality due to thrombus propagation into the pulmonary arteries. There is a lack of consensus regarding management, particularly in high-risk cancer patients. Endovascular aspiration thrombectomy utilizing the AngioVac device is effective in removal of right atrial thrombus and may be a safer option for patients with cancer in whom avoidance of higher-risk intervention is preferred. METHODS: This was an institutional review board-approved retrospective single-center case control study of patients with RAT who underwent AngioVac aspiration thrombectomy between August 2013 and July 2020. Analysis of patient demographics and clinical characteristics, thrombus-related factors, and operative details was performed. Primary endpoints included survival, safety, and technical success. RESULTS: A total of 44 patients met inclusion criteria, 20 of whom with active malignancy. The oncology group had a significantly higher Charlson comorbidity index (P = 0.01). Comparative outcomes between the oncology and non-oncology group showed no difference in survival (P = 0.8) or technical success (OR 3, 95% CI 0.83-10.9). There were 9 complications, including 6 minor, 1 moderate, 1 severe, and 1 death. CONCLUSIONS: AngioVac aspiration thrombectomy of RAT is as safe and effective in patients with cancer as those without cancer.


Subject(s)
Heart Diseases/therapy , Neoplasms/complications , Thrombectomy/instrumentation , Thrombosis/therapy , Adolescent , Adult , Aged , Aged, 80 and over , Comorbidity , Female , Heart Diseases/complications , Heart Diseases/diagnostic imaging , Heart Diseases/mortality , Humans , Male , Middle Aged , Neoplasms/diagnosis , Neoplasms/mortality , Retrospective Studies , Risk Assessment , Risk Factors , Thrombectomy/adverse effects , Thrombectomy/mortality , Thrombosis/complications , Thrombosis/diagnostic imaging , Thrombosis/mortality , Time Factors , Treatment Outcome , Young Adult
20.
Nutr Metab Cardiovasc Dis ; 31(10): 2904-2911, 2021 09 22.
Article in English | MEDLINE | ID: mdl-34344545

ABSTRACT

BACKGROUND AND AIMS: Low serum albumin (SA) is associated with an increased risk of long-term adverse events (AEs) among patients with chronic coronary syndromes. Its prognostic role in patients with ST-elevation myocardial infarction (STEMI) is less clear. To investigate the association between low SA and in-hospital AEs in STEMI patients. METHODS AND RESULTS: Multicenter retrospective cohort study of 220 STEMI patients undergoing primary percutaneous coronary intervention within 12 h from the onset of symptoms. Hypoalbuminemia was defined by serum SA <35 g/L. SA. In-hospital AEs were defined as cardiogenic shock, resuscitated cardiac arrest and death. Median SA was 38 (IQR 35.4-41.0) g/L and 37 (16.8%) patients showed hypoalbuminemia (<35 g/L) on admission. Patients with hypoalbuminemia were older, more frequently women and diabetics, prior CAD and HF. Furthermore, they showed lower hemoglobin levels and impaired renal function. At multivariable logistic regression analysis, diabetes (odds ratio [OR]:4.59, 95% confidence interval [CI] 1.71-12.28, p = 0.002) and haemoglobin (OR:0.52, 95%CI 0.37-0.72, p < 0.001) were associated with low SA. In a subgroup of 132 patients, SA inversely correlated with D-Dimer (rS -0.308, p < 0.001). Globally, twenty-eight (14.6%) AEs were recorded. Hypoalbuminemia (OR:3.43, 95%CI 1.30-9.07, p = 0.013), high-sensitive (HS)-Troponin peak above median (OR:5.41, 95%CI 1.99-14.7, p = 0.001), C-reactive protein (CRP) peak above median (OR:6.03, 95%CI 2.02-18.00, p = 0.001), and in-hospital infection (OR:3.61, 95%CI 1.21-10.80, p = 0.022) were associated with AEs. CONCLUSION: Low SA levels are associated with worse in-hospital AEs in STEMI patients, irrespective of HS-troponin and CRP plasma levels. Our findings suggest that low SA may contribute to the pro-thrombotic phenotype of these patients.


Subject(s)
Hypoalbuminemia/blood , Percutaneous Coronary Intervention/adverse effects , ST Elevation Myocardial Infarction/therapy , Serum Albumin, Human/analysis , Thrombosis/etiology , Aged , Aged, 80 and over , Biomarkers/blood , Female , Fibrin Fibrinogen Degradation Products/analysis , Hospitalization , Humans , Hypoalbuminemia/complications , Hypoalbuminemia/diagnosis , Hypoalbuminemia/mortality , Italy , Male , Middle Aged , Percutaneous Coronary Intervention/mortality , Retrospective Studies , Risk Assessment , Risk Factors , ST Elevation Myocardial Infarction/complications , ST Elevation Myocardial Infarction/diagnostic imaging , ST Elevation Myocardial Infarction/mortality , Thrombosis/blood , Thrombosis/diagnosis , Thrombosis/mortality , Treatment Outcome
SELECTION OF CITATIONS
SEARCH DETAIL
...