scholarly journals Myocardial Infarction as a Transient Risk Factor for Incident Venous Thromboembolism: Results from a Population-Based Case–Crossover Study

2019 ◽  
Vol 119 (08) ◽  
pp. 1358-1364 ◽  
Author(s):  
Joakim K. Sejrup ◽  
Trond Børvik ◽  
Gro Grimnes ◽  
Trond Isaksen ◽  
Kristian Hindberg ◽  
...  

AbstractPatients with myocardial infarction (MI) are at increased short-term risk of venous thromboembolism (VTE). The mechanisms behind this association are unclear. We aimed to investigate the impact of acute MI as a transient risk factor for incident VTE while taking other concomitant VTE risk factors into account. We conducted a case–crossover study of VTE patients (n = 707) recruited from the fourth survey of the Tromsø Study. VTE risk factors and hospitalizations were registered during the 90-day period preceding the VTE diagnosis (hazard period) and in four 90-day control periods. Conditional logistic regression was used to calculate odds ratios (ORs) with 95% confidence intervals (CIs) for VTE according to acute MI and after adjustment for other risk factors. Additionally, we applied a mediation analysis to quantify how much the known transient risk factors account for the observed effect of MI on VTE risk. MI was recorded in 13 (1.8%) of the hazard periods and in 6 (0.2%) of the control periods, which yielded a crude OR of 11.9 (95% CI: 3.9–36.7). Adjustment for immobilization and infection yielded an OR of 2.7 (95% CI: 0.6–11.2). The OR was attenuated to 2.6 (95% CI: 0.6–11.9) after further adjustment for major surgery, trauma, red blood cell transfusion, and central venous catheterization. Approximately 60% of the association between MI and VTE was mediated through infection and immobilization. In conclusion, our findings suggest that the increased VTE risk after MI may to a large extent be explained by concomitant conditions related to MI, particularly infections and immobilization.

TH Open ◽  
2019 ◽  
Vol 03 (01) ◽  
pp. e50-e57
Author(s):  
Vânia Morelli ◽  
Joakim Sejrup ◽  
Birgit Småbrekke ◽  
Ludvig Rinde ◽  
Gro Grimnes ◽  
...  

AbstractStroke is associated with a short-term increased risk of subsequent venous thromboembolism (VTE). It is unclear to what extent this association is mediated by stroke-related complications that are potential triggers for VTE, such as immobilization and infection. We aimed to investigate the role of acute stroke as a trigger for incident VTE while taking other concomitant VTE triggers into account. We conducted a population-based case-crossover study with 707 VTE patients. Triggers were registered during the 90 days before a VTE event (hazard period) and in four preceding 90-day control periods. Conditional logistic regression was used to estimate odds ratios with 95% confidence intervals (CIs) for VTE according to triggers. Stroke was registered in 30 of the 707 (4.2%) hazard periods and in 6 of the 2,828 (0.2%) control periods, resulting in a high risk of VTE, with odds ratios of 20.0 (95% CI: 8.3–48.1). After adjustments for immobilization and infection, odds ratios for VTE conferred by stroke were attenuated to 6.0 (95% CI: 1.6–22.1), and further to 4.0 (95% CI: 1.1–14.2) when other triggers (major surgery, red blood cell transfusion, trauma, and central venous catheter) were added to the regression model. A mediation analysis revealed that 67.8% of the total effect of stroke on VTE risk could be mediated through immobilization and infection. Analyses restricted to ischemic stroke yielded similar results. In conclusion, acute stroke was a trigger for VTE, and the association between stroke and VTE risk appeared to be largely mediated by immobilization and infection.


2008 ◽  
Vol 99 (06) ◽  
pp. 1085-1089 ◽  
Author(s):  
Marianna Politou ◽  
Christoforos Komporozos ◽  
Demosthenes Panagiotakos ◽  
Chrisoula Belessi ◽  
Anthi Travlou ◽  
...  

SummaryThere are limited and controversial data regarding the impact of factor XIII (FXIII) Val34Leu polymorphism in the pathogenesis of premature myocardial infarction (MI). We examined whether FXIII Val34Leu polymorphism is associated with the development of early MI.We recruited 159 consecutive patients who had survived their first acute MI under the age of 36 years (mean age=32.1 ± 3.6 years, 138 were men). The control group consisted of 121 healthy individuals matched with cases for age and sex, without a family history of premature coronary heart disease (CHD). FXIII Val34Leu polymorphism was tested with polymerase chain reaction and reverse hybridization. There was a lower prevalence of carriers of the Leu34 allele in patients than in controls (30.2 vs. 47.1%, p=0.006). FXIII Val34Leu polymorphism was associated with lower risk for acute MI after adjusting for major cardiovascular risk factors (odds ratio [OR] = 0.51, 95% confidence interval [CI] 0.27–0.95, p=0.03). Subgroup analysis according to angiographic findings (“normal” coronary arteries [n=29] or significant CHD [n=130]) showed that only patients with MI and significant CHD had lower prevalence of carriers of the Leu34 allele compared to controls after adjusting for major cardiovascular risk factors (OR = 0.42, 95% CI 0.22–0.83, p=0.01). Our data indicate that FXIII Val34Leu polymorphism has a protective effect against the development of MI under the age of 36 years, particularly in the setting of significant CHD.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
M Giustozzi ◽  
S Barco ◽  
L Valerio ◽  
F A Klok ◽  
M C Vedovati ◽  
...  

Abstract Introduction The interaction between sex and specific provoking risk factors for venous thromboembolism (VTE) may influence initial presentation and prognosis. Purpose We investigated the impact of sex on the risk of recurrence across subgroups of patients with first VTE classified according to baseline risk factors. Methods PREFER in VTE was an international, non-interventional registry (2013–2015) including patients with a first episode of acute symptomatic objectively diagnosed VTE. We studied the risk of recurrence in patients classified according to baseline provoking risk factors for VTE consisted of i) major transient (major surgery/trauma, >5 days in bed), ii) minor transient (pregnancy or puerperium, estroprogestinic therapy, prolonged immobilization, current infection or bone fracture/soft tissue trauma); iii) unprovoked events, iv) active cancer-associated VTE. Results A total of 3,455 patients diagnosed with first acute VTE were identified, of whom 1,623 (47%) were women. The percentage of patients with a major transient risk factor was 22.2% among women and 19.7% among men. Minor transient risk factors were present in 21.3% and 12.4%, unprovoked VTE in 51.6% and 61.6%, cancer-associated VTE in 4.9% of women and 6.3% of men, respectively. The proportions of cases treated with Vitamin-K antagonists (VKAs) and direct oral anticoagulants (DOACs) were similar between sexes. Median length of treatment of VKAs was 181.5 and 182.0 days and of DOACs was 113.0 and 155.0 days in women and men, respectively. At 12-months of follow-up, VTE recurrence was reported in 74 (4.8%) women and 80 (4.5%) men. Table 1 shows the sex-specific proportion of recurrences by VTE risk factor categories. Table 1 Major Transient (n=722) Minor transient (n=573) Cancer-associated (n=195) Unprovoked (1965) Women (361) Men (361) OR (95% CI) Women (346) Men (227) OR (95% CI) Women (79) Men (116) OR (95% CI) Women (837) Men (1128) OR (95% CI) One-year follow-up, n (N%)   Recurrent VTE, 21 (6.2) 10 (2.9) 0.46 (0.2; 0.9) 9 (2.7) 12 (5.4) 2.09 (0.9; 5.0) 6 (8.0) 5 (4.5) 0.54 (0.2; 1.9) 38 (4.7) 53 (4.7) 1.03 (0.7; 1.6)   Major bleeding, 6 (1.8) 5 (1.5) 0.83 (0.3; 2.7) 5 (1.5) 1 (0.5) 0.30 (0.1; 2.6) 1 (1.3) 3 (2.7) 2.07 (0.2; 20) 10 (1.2) 15 (1.4) 1.11 (0.6; 2.4)   All-cause death, 37 (10.2) 31 (8.5) 0.82 (0.5; 1.4) 10 (2.9) 14 (6.2) 2.21 (0.9; 5.1) 26 (32.9) 49 (42.2) 1.49 (0.8; 2.7) 33 (3.9) 30 (2.7) 0.66 (0.4; 1.1) Conclusions The proportion of patients with recurrent VTE events after first acute symptomatic VTE provoked by transient risk factors was not negligible during the first year of follow-up during in both women and men. These results may have implications on the decision whether to consider extended anticoagulant therapy in selected patients with provoked events. Acknowledgement/Funding This study was funded by Daiichi Sankyo.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lamiae Grimaldi-Bensouda ◽  
Bernard Begaud ◽  
Jacques Benichou ◽  
Clementine Nordon ◽  
Olivia Dialla ◽  
...  

AbstractPharmacovigilance reports of cerebral and cardiovascular events in those who use decongestants have triggered alerts related to their use. We aimed to assess the risk of stroke and myocardial infarction (MI) associated with the use of decongestants. We conducted a nested case-crossover study of patients with incident stroke and MI identified in France between 2013 and 2016 in two systematic disease registries. Decongestant use in the three weeks preceding the event was assessed using a structured telephone interview. Conditional logistic multivariable models were used to estimate the odds of incident MI and stroke, also accounting for transient risk factors and comparing week 1 (index at-risk time window, immediately preceding the event) to week 3 (reference). Time-invariant risk factors were controlled by design. In total, 1394 patients with MI and 1403 patients with stroke, mainly 70 years old or younger, were interviewed, including 3.2% who used decongestants during the three weeks prior to the event (1.0% definite exposure in the index at-risk time window, 1.1% in the referent time window; adjusted odds ratio (aOR), 0.78; 95%CI, 0.43–1.42). Secondary analysis yielded similar results for individual events (MI/stroke). We observed no increased risk of MI or stroke for patients 70 years of age and younger without previous MI or stroke who used decongestants.


Author(s):  
Ine Van den Wyngaert ◽  
Katrien De Troeyer ◽  
Bert Vaes ◽  
Mahmoud Alsaiqali ◽  
Bert Van Schaeybroeck ◽  
...  

Climate change leads to more days with extremely hot temperatures. Previous analyses of heat waves have documented a short-term rise in mortality. The results on the relationship between high temperatures and hospitalisations, especially in vulnerable patients admitted to nursing homes, are inconsistent. The objective of this research was to examine the discrepancy between heat-related mortality and morbidity in nursing homes. A time-stratified case-crossover study about the impact of heat waves on mortality and hospitalisations between 1 January 2013 and 31 December 2017 was conducted in 10 nursing homes over 5 years in Flanders, Belgium. In this study, the events were deaths and hospitalisations. We selected our control days during the same month as the events and matched them by day of the week. Heat waves were the exposure. Conditional logistic regression models were applied. The associations were reported as odds ratios at lag 0, 1, 2, and 3 and their 95% confidence intervals. In the investigated time period, 3048 hospitalisations took place and 1888 residents died. The conditional logistic regression showed that odds ratios of mortality and hospitalisations during heat waves were 1.61 (95% confidence interval 1.10–2.37) and 0.96 (95% confidence interval 0.67–1.36), respectively, at lag 0. Therefore, the increase in mortality during heat waves was statistically significant, but no significant changes in hospitalisations were obtained. Our result suggests that heat waves have an adverse effect on mortality in Flemish nursing homes but have no significant effect on the number of hospitalisations.


Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Sunao Kojima ◽  
Kunihiko Matsui ◽  
Kayo Ueda ◽  
Hiroshi Nitta ◽  
Hisao Ogawa

Introduction: Air pollution, a mixture of gases and particles that come from manmade and natural sources, has been shown to increase hospi¬tal admission and mortality attributable to cardiovascular diseases. Asian dust (AD), a windblown sand dust originating from mineral soil in the desert, and PM2.5, which comes from cars and trucks, power plants, industrial boilers, other industrial sources and wildfires, are the standard for particulate matter representing air pollution. Hypothesis: We assessed the hypothesis that AD and PM2.5 were associated with the incidence of acute myocardial infarction (AMI) in Kumamoto prefecture. Methods: Kumamoto prefecture is located in southwestern Japan and has a stable population of 1.8 million. A total of 3,670 AMI patients in 2009-2012 in Kumamoto prefecture were entirely registered and 199 AMI patients whose onset date was not definite were excluded in the present study. A time-stratified case-crossover study was conducted to assess the association between particulate matters and AMI incidence. Within-subject comparisons were made between a case and control periods in this design. The study estimated the odds ratios and 95% confidence intervals associated with AMI incidence during the case day to a few previous days using conditional logistic regression. Results: The case-crossover analysis showed that PM2.5 was not significantly associated with the incidence of AMI (Figure upper). However, the results after adjustment for temperature and relative humidity revealed a close association between AD and the incidence of AMI (Figure lower). The strong association was observed on day 1. Adding co-pollutants including oxidants, nitrogen dioxide and sulfur dioxide in the basic model did not substantially alter the results. Conclusions: AD increases the incidence of AMI compared with PM2.5. Attention should be called to patients already at high risk for cardiovascular disease in case of an official announcement of AD warning.


2019 ◽  
Vol 72 (5) ◽  
pp. 779-783
Author(s):  
Victor A. Ognev ◽  
Anna A. Podpriadova ◽  
Anna V. Lisova

Introduction:The high level of morbidity and mortality from cardiovascular disease is largely due toinsufficient influence on the main risk factors that contribute to the development of myocardial infarction.Therefore, a detailed study and assessment of risk factors is among the most important problems of medical and social importance. The aim: To study and evaluate the impact of biological, social and hygienic, social and economic, psychological, natural and climatic risk factors on the development of myocardial infarction. Materials and methods: A sociological survey was conducted in 500 people aged 34 to 85. They were divided into two groups. The main group consisted of 310 patients with myocardial infarction. The control group consisted of 190 practically healthy people, identical by age, gender and other parameters, without diseases of the cardiovascular system. Results: It was defined that 30 factors have a significant impact on the development of myocardial infarction.Data analysis revealed that the leading risk factors for myocardial infarction were biological and socio-hygienic. The main biological factors were: hypertension and hypercholesterolemia. The man socio-hygienic factor was smoking. Conclusions: Identification of risk factors provides new opportunities for the development of more effective approaches for the prevention and treatment of myocardial infarction.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
T.J Jernberg ◽  
E.O Omerovic ◽  
E.H Hamilton ◽  
K.L Lindmark ◽  
L.D Desta ◽  
...  

Abstract Background Left ventricular dysfunction after an acute myocardial infarction (MI) is associated with poor outcome. The PARADISE-MI trial is examining whether an angiotensin receptor-neprilysin inhibitor reduces the risk of cardiovascular death or worsening heart failure (HF) in this population. The aim of this study was to examine the prevalence and prognosis of different subsets of post-MI patients in a real-world setting. Additionally, the prognostic importance of some common risk factors used as risk enrichment criteria in the PARADISE-MI trial were specifically examined. Methods In a nationwide myocardial infarction registry (SWEDEHEART), including 87 177 patients with type 1 MI between 2011–2018, 3 subsets of patients were identified in the overall MI cohort (where patients with previous HF were excluded); population 1 (n=27 568 (32%)) with signs of acute HF or an ejection fraction (EF) <50%, population 2 (n=13 038 (15%)) with signs of acute HF or an EF <40%, and population 3 (PARADISE-MI like) (n=11 175 (13%)) with signs of acute HF or an EF <40% and at least one risk factor (Age ≥70, eGFR <60, diabetes mellitus, prior MI, atrial fibrillation, EF <30%, Killip III-IV and STEMI without reperfusion therapy). Results When all MIs, population 1 (HF or EF <50%), 2 (HF or EF <40%) and 3 (HF or EF <40% + additional risk factor (PARADISE-MI like)) were compared, the median (IQR) age increased from 70 (61–79) to 77 (70–84). Also, the proportion of diabetes (22% to 33%), STEMI (38% to 50%), atrial fibrillation (10% to 24%) and Killip-class >2 (1% to 7%) increased. After 3 years of follow-up, the cumulative probability of death or readmission because of heart failure in the overall MI population and in population 1 to 3 was 17.4%, 26.9%, 37.6% and 41.8%, respectively. In population 2, all risk factors were independently associated with death or readmission because of HF (Age ≥70 (HR (95% CI): 1.80 (1.66–1.95)), eGFR <60 (1.62 (1.52–1.74)), diabetes mellitus (1.35 (1.26–1.44)), prior MI (1.16 (1.07–1.25)), atrial fibrillation (1.35 (1.26–1.45)), EF <30% (1.69 (1.58–1.81)), Killip III-IV (1.34 (1.19–1.51)) and STEMI without reperfusion therapy (1.34 (1.21–1.48))) in a multivariable Cox regression analysis. The risk increased with increasing number of risk factors (Figure 1). Conclusion Depending on definition, post MI HF is present in 13–32% of all MI patients and is associated with a high risk of subsequent death or readmission because of HF. The risk increases significantly with every additional risk factor. There is a need to optimize management and improve outcomes for this high risk population. Figure 1 Funding Acknowledgement Type of funding source: Private company. Main funding source(s): Novartis


BMJ Open ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. e044564
Author(s):  
Kaizhuang Huang ◽  
Jiaying Lu ◽  
Yaoli Zhu ◽  
Tao Cheng ◽  
Dahao Du ◽  
...  

IntroductionDelirium in the postoperative period is a wide-reaching problem that affects important clinical outcomes. The incidence and risk factors of delirium in individuals with acute myocardial infarction (AMI) after primary percutaneous coronary intervention (PCI) has not been completely determined and no relevant systematic review and meta-analysis of incidence or risk factors exists. Hence, we aim to conduct a systematic review and meta-analysis to ascertain the incidence and risk factors of delirium among AMI patients undergoing PCI.Methods and analysesWe will undertake a comprehensive literature search among PubMed, EMBASE, Cochrane Library, PsycINFO, CINAHL and Google Scholar from their inception to the search date. Prospective cohort and cross-sectional studies that described the incidence or at least one risk factor of delirium will be eligible for inclusion. The primary outcome will be the incidence of postoperative delirium. The quality of included studies will be assessed using a risk of bias tool for prevalence studies and the Cochrane guidelines. Heterogeneity of the estimates across studies will be assessed. Incidence and risk factors associated with delirium will be extracted. Incidence data will be pooled. Each risk factor reported in the included studies will be recorded together with its statistical significance; narrative and meta-analytical approaches will be employed. The systematic review and meta-analysis will be presented according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses.Ethics and disseminationThis proposed systematic review and meta-analysis is based on published data, and thus there is no requirement for ethics approval. The study will provide an up to date and accurate incidence and risk factors of delirium after PCI among patients with AMI, which is necessary for future research in this area. The findings of this study will be disseminated through publication in a peer-reviewed journal.PROSPERO registration numberCRD42020184388.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
H Wienbergen ◽  
A Fach ◽  
S Meyer ◽  
J Schmucker ◽  
R Osteresch ◽  
...  

Abstract Background The effects of an intensive prevention program (IPP) for 12 months following 3-week rehabilitation after myocardial infarction (MI) have been proven by the randomized IPP trial. The present study investigates if the effects of IPP persist one year after termination of the program and if a reintervention after >24 months (“prevention boost”) is effective. Methods In the IPP trial patients were recruited during hospitalization for acute MI and randomly assigned to IPP versus usual care (UC) one month after discharge (after 3-week rehabilitation). IPP was coordinated by non-physician prevention assistants and included intensive group education sessions, telephone calls, telemetric and clinical control of risk factors. Primary study endpoint was the IPP Prevention Score, a sum score evaluating six major risk factors. The score ranges from 0 to 15 points, with a score of 15 points indicating best risk factor control. In the present study the effects of IPP were investigated after 24 months – one year after termination of the program. Thereafter, patients of the IPP study arm with at least one insufficiently controlled risk factor were randomly assigned to a 2-months reintervention (“prevention boost”) vs. no reintervention. Results At long-term follow-up after 24 months, 129 patients of the IPP study arm were compared to 136 patients of the UC study arm. IPP was associated with a significantly better risk factor control compared to UC at 24 months (IPP Prevention Score 10.9±2.3 points in the IPP group vs. 9.4±2.3 points in the UC group, p<0.01). However, in the IPP group a decrease of risk factor control was observed at the 24-months visit compared to the 12-months visit at the end of the prevention program (IPP Prevention Score 10.9±2.3 points at 24 months vs. 11.6±2.2 points at 12 months, p<0.05, Figure 1). A 2-months reintervention (“prevention boost”) was effective to improve risk factor control during long-term course: IPP Prevention Score increased from 10.5±2.1 points to 10.7±1.9 points in the reintervention group, while it decreased from 10.5±2.1 points to 9.7±2.1 points in the group without reintervention (p<0.05 between the groups, Figure 1). Conclusions IPP was associated with a better risk factor control compared to UC during 24 months; however, a deterioration of risk factors after termination of IPP suggests that even a 12-months prevention program is not long enough. The effects of a short reintervention after >24 months (“prevention boost”) indicate the need for prevention concepts that are based on repetitive personal contacts during long-term course after coronary events. Figure 1 Funding Acknowledgement Type of funding source: Foundation. Main funding source(s): Stiftung Bremer Herzen (Bremen Heart Foundation)


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