Venous Thromboembolic Diseases

Author(s):  
Gregory Piazza ◽  
Samuel Z. Goldhaber

This chapter reviews the pathophysiology of VTE, including its risk factors and long-term consequences. Diagnostic algorithms that integrate clinical findings, laboratory testing, and imaging are described. The role of risk stratification for identification of high-risk PE patients is highlighted. Options for the management of VTE are reviewed. Finally, practical recommendations for the prevention of VTE are provided.

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
E Zuffa ◽  
F Dardi ◽  
M Palazzini ◽  
E Gotti ◽  
A Rinaldi ◽  
...  

Abstract Background Current pulmonary hypertension (PH) guidelines stratify the risk of patients with pulmonary arterial hypertension (PAH) using a multiparametric approach. Anyway, the role of unmodifiable risk factors is not taken into account. Purpose The aim of this study was to evaluate the role of unmodifiable risk factors (age, gender, PAH aetiology) in PAH risk stratification using the recently proposed simplified risk table and to test if these factors influence the response to PAH-specific treatment. Methods All patients with PAH referred to a single centre were included from 2003 to 2017. We applied a simplified risk assessment strategy using the following criteria: WHO functional class, 6-min walking distance, right atrial pressure or brain natriuretic peptide plasma levels and cardiac index (CI) or mixed venous oxygen saturation (SvO2). The last 2 criteria were based on which parameter was available; if both were available the worst was chosen. Risk strata were defined as: Low risk= at least 3 low risk and no high-risk criteria; High risk= at least 2 high risk criteria including CI or SvO2; Intermediate risk= definitions of low or high risk not fulfilled. Then we performed multivariate Cox analysis to evaluate what are the independent predictors of survival (age, gender, PAH aetiology together with the recently proposed simplified PAH risk table) and we tested if these factors influence the response to PAH specific therapy comparing the % improvement of hemodynamic parameters from baseline to 3–4 months after starting treatment. Wilcoxon-Mann-Whitney test was used for comparisons. Results Six hundreds and twenty-one treatment-naïve patients were enrolled. Age [HR (95% CI) = 1.022 (1.014–1.030); p-value <0.001], male gender [HR (95% CI) = 1.881 (1.479–2.392); p-value <0.001] and connective tissue disease (CTD)-PAH aetiology [HR (95% CI)= 2.278 (1.733–2.995); p-value <0.001] were all independent predictors of prognosis in patients with PAH together with the recently validated simplified PAH risk table [HR (95% CI) = 2.161 (1.783–2.618); p-value <0.001] but they didn't significantly influence the response to PAH specific treatment as shown in the Figure. Figure 1 Conclusions Age, gender and CTD-PAH aetiology significantly influence prognosis together with the recently validated simplified PAH risk table but don't significantly influence the response to PAH-specific treatment. Acknowledgement/Funding None


Author(s):  
Savannah Fletcher ◽  
Adam Plotnik ◽  
Ravi N. Srinivasa ◽  
Jeffrey Forris Beecham Chick ◽  
John M. Moriarty

Abstract Purpose of review Describe the role of inferior vena cava filter (IVCF) retrieval in patients on chronic anticoagulation given the overlap of these treatment options in the management of patients with venous thromboembolic disease. Recent findings Despite the increase in IVCF retrievals since the Food and Drug Administration safety communications in 2010 and 2014, retrieval rates remain low. Previous studies have shown that longer filter dwell times are associated with greater risk for filter complications and more difficulty with filter retrievals. Recent findings suggest that complications are more frequent in the first 30 days after placement. Summary The decision to retrieve an optional IVCF is individualized and requires diligent follow-up with consistent re-evaluation of the need for the indwelling IVCF, particularly in those on long-term anticoagulation therapy.


2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 1232.1-1232
Author(s):  
M. Di Battista ◽  
S. Barsotti ◽  
A. Della Rossa ◽  
M. Mosca

Background:Cardiovascular (CV) diseases, namely myocardial infarction and stroke, are not among the most known and frequent complications of systemic sclerosis (SSc), but there is growing evidence that SSc patients have a higher prevalence of CV diseases than the general population [1].Objectives:To compare two algorithms for CV risk estimation in a cohort of patients with SSc, finding any correlation with clinical characteristics of the disease.Methods:SSc patients without previous myocardial infarction or stroke were enrolled. Traditional CV risk factors, SSc-specific characteristics and ongoing therapies were assessed. Framingham and QRISK3 algorithms were then used to estimate the risk of develop a CV disease over the next 10 years.Results:Fifty-six SSc patients were enrolled. Framingham reported a median risk score of 9.6% (IQR 8.5), classifying 24 (42.9%) subjects at high risk, with a two-fold increase of the mean relative risk in comparison to general population. QRISK3 showed a median risk score of 15.8% (IQR 19.4), with 36 (64.3%) patients considered at high-risk. Both algorithms revealed a significant role of some traditional risk factors and a noteworthy potential protective role of endothelin receptor antagonists (p=0.003). QRISK3 was also significantly influenced by some SSc-specific characteristics, as limited cutaneous subset (p=0.01), interstitial lung disease (p=0.04) and non-ischemic heart involvement (p=0.03), with the first two that maintain statistically significance in the multivariate analysis (p=0.02 for both).Conclusion:QRISK3 classifies more SSc patients at high-risk to develop CV diseases than Framingham, and it seems to be influenced by some SSc-specific characteristics. If its predictive accuracy were prospectively verified, the use of QRISK3 as a tool in the early detection of SSc patients at high CV risk should be recommended.References:[1]Ngian GS, Sahhar J, Proudman SM, Stevens W, Wicks IP, Van Doornum S. Prevalence of coronary heart disease and cardiovascular risk factors in a national cross-sectional cohort study of systemic sclerosis. Ann Rheum Dis. 2012;71:1980-3.Disclosure of Interests:None declared


2016 ◽  
Vol 34 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Brenda J. Weigel ◽  
Elizabeth Lyden ◽  
James R. Anderson ◽  
William H. Meyer ◽  
David M. Parham ◽  
...  

Purpose Patients with metastatic rhabdomyosarcoma (RMS), except those younger than 10 years with embryonal RMS, have an estimated long-term event-free survival (EFS) of less than 20%. The main goal of this study was to improve outcome of patients with metastatic RMS by dose intensification with interval compression, use of the most active agents determined in phase II window studies, and use of irinotecan as a radiation sensitizer. Patients and Methods Patients with metastatic RMS received 54 weeks of therapy: blocks of therapy with vincristine/irinotecan (weeks 1 to 6, 20 to 25, and 47 to 52), interval compression with vincristine/doxorubicin/cyclophosphamide alternating with etoposide/ifosfamide (weeks 7 to 19 and 26 to 34), and vincristine/dactinomycin/cyclophosphamide (weeks 38 to 46). Radiation therapy occurred at weeks 20 to 25 (primary) but was also permitted at weeks 1 to 6 (for intracranial or paraspinal extension) and weeks 47 to 52 (for extensive metastatic sites). Results One hundred nine eligible patients were enrolled, with a median follow-up of surviving patients of 3.8 years (3-year EFS for all patients, 38% [95% CI, 29% to 48%]; survival, 56% [95% CI, 46% to 66%]). Patients with one or no Oberlin risk factor (age > 10 years or < 1 year, unfavorable primary site of disease, ≥ three metastatic sites, and bone or bone marrow involvement) had a 3-year EFS of 69% (95% CI, 52% to 82%); high-risk patients with two or more risk factors had a 3-year EFS of 20% (95% CI, 11% to 30%). Toxicity was similar to that on prior RMS studies. Conclusion Patients with metastatic RMS with one or no Oberlin risk factor had an improved 3-year EFS of 69% on ARST0431 compared with an historical cohort from pooled European and US studies; those with two or more risk factors have a dismal prognosis, and new approaches are needed for this very-high-risk group.


2021 ◽  
Vol 6 (2) ◽  
pp. 185-191
Author(s):  
Hiral Parekh ◽  
Sneha Chaudhari

This was a prospective study conducted in pregnant patients with high risk factors who got admitted in the Department of Obstetrics and Gynaecology at Care Hospital, Jamnagar during the period from May 2018 to September 2020. Background: High-risk pregnancies causes many adverse perinatal outcomes. Doppler ultrasound is a non-invasive technique to study the feto-maternal circulation to guide the clinical management. Objective: This study aims at evaluating the role of colour Doppler in high-risk pregnancies and their perinatal outcome. Materials and Methods: This was a prospective study carried out for 29 months in the Department of Radiology with antenatal women in the age group of 18-35 years with singleton pregnancy of gestational age of <28 weeks to >35 weeks having high-risk factors considered in study. The risk factors considered were pregnancy induced hypertension (PIH), gestational diabetes, anemia, oligohydramnios, polyhydramnios and IUGR. Doppler study of umbilical artery and fetal middle cerebral artery (MCA) arteries was done and amniotic fluid index (AFI) was measured. Parameters in the form of resistive index, pulsatility index, and systolic/diastolic ratio were taken. obstetric history was taken with regular interval follow up. Results: The study was carried out with 50 patients. High-risk pregnancy was more common in the age group of 21-25 years. The most common high-risk factor in pregnancy was oligohydramnios which accounted for 30% of cases. Out of 50 high-risk pregnancies, 5 (10 %) of cases resulted in intrauterine growth restriction (IUGR). Out of 50 high-risk cases, in 36 cases, umbilical artery findings were abnormal. 3 patients had intrauterine death (IUD) and 27 patients had poor perinatal outcome. Umbilical artery abnormality showed significant sensitivity and negative predictive value for adverse (poor + IUD) perinatal. Correlation was seen between high risk pregnancy and need of emergency caesarean section and induction and associated adverse perinatal outcome. Conclusion: Combination of different arterial waveform study enhance the diagnostic accuracy in identifying those intrauterine growth restricted foetuses that were at risk. Keywords: Colour Doppler, high risk pregnancy, perinatal outcome.


2009 ◽  
Vol 98 (3) ◽  
pp. 164-168 ◽  
Author(s):  
J. Virkkunen ◽  
M. Venermo ◽  
J. Saarinen ◽  
J. Salenius

Background and Aims: The ability to predict post-operative mortality reliably will be of assistance in making decisions concerning the treatment of an individual patient. The aim of this study was to test the GAS score as a predictor of post-operative mortality in vascular surgical patients. Material and Methods: A total of 157 consecutive patients who underwent an elective vascular surgical procedure were included in the study. The Cox proportional hazards model was used in analyzing the importance of various preoperative risk factors for the postoperative outcome. ASA and GAS were tested in predicting the short and long-term outcome. On the basis of the GAS cut-off value 77, patients were selected into low-risk (GAS low: GAS < 77) and high-risk (GAS high: GAS > = 77) groups, and the examined risk factors were analyzed to determine which of them had predictive value for the prognosis. Results: None of the patients in the GAS low group died, and mortality in the GAS high group was 4.8% (p = 0.03) at 30 days' follow-up. The 12-month survival rates were 98.6% and 78.6% (p = 0.0001), respectively, with the respective 5-year survival rates of 76.7% and 44.0% (p = 0.0001). The only independent risk factor for 30-day mortality was the renal risk factor (OR 20.2). The combination of all three GAS variables(chronic renal failure, cardiac disease and cerebrovascular disease), excluding age, was associated with a 100% two-year mortality. Conclusions: Mortality is low for patients with GAS<77. For the high-risk patients (GAS> = 77), due to its low predictive value for death, GAS yields limited value in clinical practice. In cases of patients with all three risk factors (renal, cardiac and cerebrovascular), vascular surgery should be considered very carefully.


2020 ◽  
Vol 2 (35) ◽  
pp. 149-159
Author(s):  
Aline Okipney ◽  
Jéssica Romanelli Amorim de Souza ◽  
Antonio Carlos Ligocki Campos ◽  
Leticia Fuganti Campos ◽  
Paula Rodrigues Anjo ◽  
...  

Introduction: The intestinal microbiota has a symbiotic relationship with the human being. Its alteration, known as dysbiosis, can result in several diseases. Some risk factors may predict the occurrence of this condition. The purpose of this study was to evaluate the effectiveness of the National Dysbiosis Survey (INDIS) in the risk stratification of hospitalized adult patients that presented with intestinal dysbiosis. Methods: 100 patients hospitalized at the Hospital das Clínicas da UFPR were interviewed through INDIS. In this questionnaire, risk factors for dysbiosis of each patient were established and the dysbiosis degree was stratified in low, medium, high, and very high risk. Results: Most patients were classified as medium (43%) and high risk (39%) of dysbiosis. The univariate analysis revealed an association between the degree of dysbiosis and elderly patients (p=0.034), number of comorbidities (p<0.001), presence of diarrhea or constipation (p<0.001) and medication in use [antibiotic and/or proton pump inhibitor (PII); p<0.001]. In the multivariate analysis, the most important influence in classification was the presence of diarrhea or constipation (OR=3.00, 95% CI [1.73, 5.21] p<0.001) and medication in use (Score 3: OR = 53.4, 95% CI [2.73, 1045.5], p=0.009 and Score 4-8: OR = 1709.1, 95% CI [50.27, 58103.5] p<0.001), both independent predictors of high and very high risk of dysbiosis. Conclusion: The risk degree of intestinal dysbiosis is greater in the presence of diarrhea or constipation, the use of antibiotics and/or PII, and in elderly patients. Once the risks of dysbiosis have been defined, INDIS proved to be an effective and rapid tool for risk stratification of dysbiosis in the study population, future studies should determine the relevance of therapeutic interventions with the purpose of normalizing the intestinal flora.


Author(s):  
Houyong Zhu ◽  
Xiaoqun Xu ◽  
Xiaojiang Fang ◽  
Fei Ying ◽  
Liuguang Song ◽  
...  

Background Long‐term antithrombotic strategies for patients with chronic coronary syndrome with high‐risk factors represent an important treatment dilemma in clinical practice. Our aim was to conduct a network meta‐analysis to evaluate the efficacy and safety of long‐term antithrombotic strategies in patients with chronic coronary syndrome. Methods and Results Four randomized studies were included (n=75167; THEMIS [Ticagrelor on Health Outcomes in Diabetes Mellitus Patients Intervention Study], COMPASS [Cardiovascular Outcomes for People Using Anticoagulation Strategies], PEGASUS‐TIMI 54 [Prevention of Cardiovascular Events in Patients With Prior Heart Attack Using Ticagrelor Compared to Placebo on a Background of Aspirin–Thrombolysis in Myocardial Infarction 54], and DAPT [Dual Anti‐platelet Therapy]). The odds ratios (ORs) and 95% CIs) were calculated as the measure of effect size. The results of the network meta‐analysis showed that, compared with aspirin monotherapy, the ORs for trial‐defined major adverse cardiovascular and cerebrovascular events were 0.86; (95% CI, 0.80–0.93) for ticagrelor plus aspirin, 0.89 (95% CI, 0.78–1.02) for rivaroxaban monotherapy, 0.74 (95% CI, 0.64–0.85) for rivaroxaban plus aspirin, and 0.72 (95% CI, 0.60,–0.86) for thienopyridine plus aspirin. Compared with aspirin monotherapy, the ORs for trial‐defined major bleeding were 2.15 (95% CI, 1.78–2.59]) for ticagrelor plus aspirin, 1.51 (95% CI, 1.23–1.85) for rivaroxaban monotherapy, and 1.68 (95% CI, 1.37–2.05) for rivaroxaban plus aspirin. For death from any cause, the improvement effect of rivaroxaban plus aspirin was detected versus aspirin monotherapy (OR, 0.76; 95% CI, 0.65–0.90), ticagrelor plus aspirin (OR, 0.79; 95% CI, 0.66–0.95), rivaroxaban monotherapy (OR, 0.82; 95% CI, 0.69–0.97), and thienopyridine plus aspirin (OR, 0.58; 95% CI, 0.41–0.82) regimens. Conclusions All antithrombotic strategies combined with aspirin significantly reduced the incidence of major adverse cardiovascular and cerebrovascular events and increased the risk of major bleeding compared with aspirin monotherapy. Considering the outcomes of all ischemic and bleeding events and all‐cause mortality, rivaroxaban plus aspirin appears to be the preferred long‐term antithrombotic regimen for patients with chronic coronary syndrome and high‐risk factors.


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