Low-dose aspirin and risk of intracranial bleeds

Neurology ◽  
2017 ◽  
Vol 89 (22) ◽  
pp. 2280-2287 ◽  
Author(s):  
Lucía Cea Soriano ◽  
David Gaist ◽  
Montse Soriano-Gabarró ◽  
Susan Bromley ◽  
Luis A. García Rodríguez
Keyword(s):  
Low Dose ◽  
Reference Group ◽  
Population Based ◽  
The United Kingdom ◽  
Dose Aspirin ◽  
Increased Risk ◽  
Low Dose Aspirin ◽  
Adjusted Rate ◽  
Rate Ratios ◽  
Incident Cases

Objective:To quantify the risk of intracranial bleeds (ICBs) associated with new use of prophylactic low-dose aspirin using a population-based primary care database in the United Kingdom.Methods:A cohort of new users of low-dose aspirin (75–300 mg; n = 199,079) aged 40–84 years and a 1:1 matched cohort of nonusers of low-dose aspirin at baseline were followed (maximum 14 years, median 5.4 years) to identify incident cases of ICB, with validation by manual review of patient records or linkage to hospitalization data. Using 10,000 frequency-matched controls, adjusted rate ratios (RRs) with 95% confidence intervals (CIs) were calculated for current low-dose aspirin use (0–7 days before the index date [ICB date for cases, random date for controls]); reference group was never used.Results:There were 1,611 cases of ICB (n = 743 for intracerebral hemorrhage [ICH], n = 483 for subdural hematoma [SDH], and n = 385 for subarachnoid hemorrhage [SAH]). RRs (95% CI) were 0.98 (0.84–1.13) for all ICB, 0.98 (0.80–1.20) for ICH, 1.23 (0.95–1.59) for SDH, and 0.77 (0.58–1.01) for SAH. No duration of use or dose–response association was apparent. RRs (95% CI) for ≥1 year of low-dose aspirin use were 0.90 (0.72–1.13) for ICH, 1.20 (0.91–1.57) for SDH, and 0.69 (0.50–0.94) for SAH.Conclusion:Low-dose aspirin is not associated with an increased risk of any type of ICB and is associated with a significantly decreased risk of SAH when used for ≥1 year.

Comparing mortality of colorectal cancer and gastrointestinal bleeding among patients with long-term use of low dose aspirin: A population-based study of 689,209 patients.

2017 ◽  
Vol 35 (4_suppl) ◽  
pp. 527-527
Author(s):  
Joseph Sung ◽  
Kelvin Kf Tsoi
Keyword(s):  
Colorectal Cancer ◽  
Gastrointestinal Bleeding ◽  
Large Scale ◽  
Low Dose ◽  
Population Based ◽  
Dose Aspirin ◽  
Increased Risk ◽  
Incidence And Mortality ◽  
Low Dose Aspirin

527 Background: Aspirin, commonly used for prevention of cardiovascular and cerebrovascular diseases, is well-known to protect against colorectal cancer (CRC) development but increase risk of gastrointestinal bleeding (GIB). Few large-scale studies have compared the benefit and risk of long-term aspirin usage. This cohort study aims to evaluate the use of low-dose aspirin to prevent CRC and the risk of GIB associated with the aspirin use. Methods: A population-based clinical dataset was used to compare incidence and mortality of CRC and GIB patients receiving low-dose aspirin with sex-and-age matched controls (in 1:2 ratio). Patients with aspirin≤6 months were excluded. Clinical data of 206,243 aspirin users (mean dose 80 mg/day, mean duration 7.7 years) and 482,966 non-users were included. All patients must have at least 10-year follow up on clinical outcome. Results: Among aspirin users 5,776 (2.80%) were diagnosed with CRC; 2,097 (1.02%) died of the malignancy. 16,483 (3.41%) non-users were diagnosed with CRC; 7,963 (1.65%) died of CRC. Using the cox-proportional hazard regression, aspirin usage showed a modest but significant reduction in CRC mortality (HR = 0.65; 95% CI = 0.62 to 0.69). On the other hand, 11,187 (5.42%) aspirin users developed GIB, and 841 (0.41%) died. 15,186 (3.14%) non-users developed GIB, and 1,682 patients (0.35%) died. Aspirin users showed modest but significant increased risk of GIB-related mortality (HR = 1.24; 95% CI = 1.14 to 1.35). Conclusions: The long-term use of low dose aspirin shows preventive effect on CRC, but also increases the associated GIB risk. Considerations of prophylactic use of aspirin should balance the benefit and the risk of this treatment to the target population. [Table: see text]

scholarly journals Trends in the use of oral anticoagulants, antiplatelets and statins in four European countries: a population-based study

2021 ◽  
Author(s):  
Luis A. García Rodríguez ◽  
Lucía Cea Soriano ◽  
Francisco J. de Abajo ◽  
Francesca Valent ◽  
Jesper Hallas ◽  
...  
Keyword(s):  
Low Dose ◽  
Oral Anticoagulants ◽  
Population Based ◽  
European Countries ◽  
The United Kingdom ◽  
Dose Aspirin ◽  
Low Dose Aspirin ◽  
Prevalence Proportion ◽  
The Uk ◽  
Statin Use

Abstract Purpose To evaluate time trends in the prevalence of antithrombotic and statin use in four European countries. Methods Using population-based data from the United Kingdom, Denmark, Spain and Italy between 2010 and 2018, we calculated standardized annual prevalence proportions of antithrombotics and statin use, and changes in prevalence proportions (2018 vs. 2010). Results Prevalence proportion of statins increased from 24.8% to 24.6% (UK), 21.0% to 22.3% (Region of Southern Denmark [RSD]), 12.9% to 14.3% (Udine, Italy), and 20.3% to 23.2% (Spain). Prevalence proportions of antithrombotics declined in all four countries: 18.7% to 15.9% (UK; − 2.8% points), 18.9% to 18.1% (RSD; − 0.8% points), 17.7% to 16.6% (Udine; − 1.1% points) and 15.0% to 13.6% (Spain; − 1.4% points). These declines were driven by reductions in low-dose aspirin use: 15.3% to 8.9% (UK; − 6.4% points), 16.3% to 9.5% (RSD; − 6.8% points), 13.5% to 11.6% (Udine; − 1.9% points), and 10.2% to 8.8% (Spain; − 1.4% points). In the UK, low-dose aspirin use declined from 9.1% to 4.3% (− 4.8% points) for primary CVD prevention, and from 49.6% to 36.9% (− 12.7% points) for secondary prevention. Oral anticoagulant use gradually increased but did not fully account for the decrease in low-dose aspirin use. Conclusions Antithrombotic use in the UK, RSD, Udine and Spain declined between 2010 and 2018, driven by a reduction in use of low-dose aspirin that is not completely explained by a gradual increase in OAC use. Use of statins remained constant in the UK, and increased gradually in the RSD, Udine and Spain.

scholarly journals 3437 Associations of aspirin, non-aspirin NSAIDs, statins, and metformin with risk of biliary cancer: A Swedish population-based cohort study

2019 ◽  
Vol 3 (s1) ◽  
pp. 35-35
Author(s):  
Lorena Marcano Bonilla ◽  
Cathy Schleck ◽  
William Harmsen ◽  
Terry Therneau ◽  
Omid Sadr-Azodi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cohort Study ◽  
Low Dose ◽  
Population Based ◽  
Individual Risk ◽  
Swedish Population ◽  
Dose Aspirin ◽  
Increased Risk ◽  
Low Dose Aspirin ◽  
Time Varying Covariates

OBJECTIVES/SPECIFIC AIMS: In an effort to elucidate the role of potentially cancer chemopreventive drugs, we leveraged the Mayo Clinic-Karolinska Institute collaboration to create a multidisciplinary team that included an epidemiologist, statisticians, and physicians. We performed a population-based cohort study to examine the association between low dose aspirin, non-aspirin NSAIDs, statins, metformin, other risk factors and the risk of biliary tract cancer (BTC), while assessing confounding by sex. METHODS/STUDY POPULATION: We conducted a nationwide Swedish population-based cohort study using the Swedish Prescribed Drug Registry, which virtually completely enumerates use of prescribed medications nationwide since 2005. BTC diagnosis (intrahepatic cholangiocarcinoma [iCCA], extrahepatic cholangiocarcinoma [eCCA] or gallbladder cancer [GBC]) was ascertained from the Swedish Cancer Registry. Age-scaled Cox models, with exposure as time-varying covariates, were used to calculate hazard ratios (HRs), separately for men and women. RESULTS/ANTICIPATED RESULTS: In the 5.7 million person cohort, the risk of iCCA was significantly lower in men using statins (HR 0.62,95%CI 0.39-1.00, p = 0.05), with a non-significant reduction in women. Statin use was associated with a significantly decreased risk of eCCA in both women (HR 0.60,0.38-0.94, p = 0.03) and men (HR 0.47,0.28-0.80, p = 0.01). Low dose aspirin (HR 0.76,0.60-0.97, p = 0.03) was associated with a lower risk of GBC only in women, while statins (HR 0.72,0.55-0.93, p = 0.01) showed a significantly decreased risk of GBC in women and a non-significant reduction in men. For all BTC subtypes, combined use of low dose aspirin and statins did not confer additional risk reductions beyond those achieved by statins alone. Male and female users of non-aspirin NSAIDs appeared to be at increased risk of BTC and its subtypes. Metformin did not significantly affect risk of BTC. DISCUSSION/SIGNIFICANCE OF IMPACT: Our collaborative efforts allowed us to develop the largest population-based cohort evaluating risk and protective factors for BTC. Our results provide strong evidence in favor of the chemopreventive roles of low dose aspirin and statins in a subtype- and sex-specific manner. Individual risk factors contribute to development of BTC subtypes in different magnitudes. The next steps to translate these findings into clinical practice require randomized clinical trials that validate our results and provide a more complete picture of the risk-benefit ratio.

scholarly journals The Risk of Gastrointestinal Hemorrhage in Low-Dose Aspirin Users with Diabetes Mellitus: Systematic Review and Meta-Analysis

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Yashuo Wang ◽  
Wei Wang ◽  
Bin Wang ◽  
Yunyang Wang
Keyword(s):  
Diabetes Mellitus ◽  
Low Dose ◽  
Meta Analysis ◽  
Quality Data ◽  
Cochrane Library ◽  
Knowledge Infrastructure ◽  
Dose Aspirin ◽  
Increased Risk ◽  
Low Dose Aspirin ◽  
Patients With Diabetes

Background. Our aim was to assess the risk of gastrointestinal (GI) hemorrhage associated with diabetes among patients taking low-dose aspirin (≤325 mg/day). Methods. A systematic search was conducted for publication in English and Chinese using term equivalents for “GI hemorrhage”, “aspirin”, and “diabetes mellitus” up till April 2020. Electronic databases include PUBMED, EMBASE, Cochrane Library databases, Chinese National Knowledge Infrastructure (CNKI), Wanfang Database, and VIP Database. Two independent authors searched databases and reviewed abstracts for comprehensive studies keeping adequate study quality. Data of weighted odds ratios were statistically evaluated and potential bias was checked. Results. Among 446 publications, eight case-control researches, including 1601 patients, were deemed for this meta-analysis. Patients with diabetes were associated with a higher risk of GI hemorrhage than patients without diabetes: the summary ORs were 3.10 (95% CI, 2.35–4.09). The heterogeneity of the reports was not significant (Chi2=3.39, P=0.85; I2=0%). Conclusion. The meta-analysis showed that aspirin users with diabetes were more likely to have GI hemorrhage. Hence, when treating diabetics with aspirin, the increased risk of GI bleeding should be taken in consideration.

scholarly journals Effect of Proton Pump Inhibitors on Risks of Upper and Lower Gastrointestinal Bleeding among Users of Low-Dose Aspirin: A Population-Based Observational Study

2020 ◽  
Vol 9 (4) ◽  
pp. 928
Author(s):  
Luis A. García Rodríguez ◽  
Angel Lanas ◽  
Montse Soriano-Gabarró ◽  
Pareen Vora ◽  
Lucía Cea Soriano
Keyword(s):  
Observational Study ◽  
Gastrointestinal Bleeding ◽  
Proton Pump Inhibitors ◽  
Proton Pump ◽  
Low Dose ◽  
Population Based ◽  
Lower Gastrointestinal Bleeding ◽  
Aspirin Therapy ◽  
Dose Aspirin ◽  
Low Dose Aspirin

Estimates of the effect of proton pump inhibitors (PPIs) on risks of upper and lower gastrointestinal bleeding (UGIB and LGIB) among low-dose aspirin users in routine clinical practice are variable (UGIB) or lacking (LGIB). We aimed to establish these risks in the same observational study population. Using UK primary care data, we followed 199,049 new users of low-dose aspirin (75–300 mg/day) and matched non-users at start of follow-up to identify incident UGIB/LGIB cases. In nested case–control analyses, adjusted odds ratios (ORs) were calculated for concomitant PPI use vs. past (discontinued) PPI use among current low-dose aspirin users. For UGIB (n = 987), ORs (95% CIs) were 0.69 (0.54–0.88) for >1 month PPI use and 2.65 (1.62–4.3) for ≤1 month PPI use. Among the latter group, ORs (95% CIs) were 3.05 (1.75–5.33) for PPI initiation after start of aspirin therapy, and 1.66 (0.63–4.36) for PPI initiation on/before start of aspirin therapy. For LGIB (n = 1428), ORs (95% CIs) were 0.98 (0.81–1.17) for >1 month PPI use and 1.12 (0.73–1.71) for ≤1 month PPI use. Among low-dose aspirin users, maintaining PPI use (>1 month) was associated with a significantly reduced UGIB risk. Neither short nor long-term PPI use affected LGIB risk.

Methimazole Treatment and Risk of Acute Pancreatitis: A Population-based Cohort Study

2020 ◽  
Vol 105 (12) ◽  
pp. e4527-e4530
Author(s):  
Alessandro Pecere ◽  
Marina Caputo ◽  
Andrea Sarro ◽  
Andrealuna Ucciero ◽  
Angelica Zibetti ◽  
...  
Keyword(s):  
Acute Pancreatitis ◽  
Absolute Risk ◽  
Population Based ◽  
Age Classes ◽  
Population Based Study ◽  
Increased Risk ◽  
Hospital Discharge Records ◽  
Adjusted Rate ◽  
Administrative Health Databases ◽  
Rate Ratios

Abstract Context A warning has been recently issued by the European Medicine Agency (EMA) regarding a potential increased risk of acute pancreatitis (AP) in methimazole (MMI) users. Objective To investigate the association between MMI and the diagnosis of AP in a population-based study. Materials and Methods A retrospective analysis of administrative health databases was conducted (2013–2018). Relevant data were obtained from: (1) inhabitants registry, (2) hospital discharge records (ICD-9-CM 577.0), and (3) drug claims registry (ATC H03BB02). We evaluated AP risk in MMI users in 18 months of treatment, stratifying results by trimester. Poisson regression was used to estimate the age- and sex-adjusted rate ratios (RR), and the relative 95% confidence intervals (CI), comparing rates of AP between MMI users and nonusers. The absolute risk of AP in MMI users was also calculated. Results A total of 23 087 new users of MMI were identified. Among them, 61 hospitalizations occurred during the study period. An increase in AP risk was evident during the first 3 trimesters of therapy (RR 3.40 [95% CI: 2.12–5.48]; RR 2.40 [95% CI: 1.36–4.23]; RR 2.80 [95% CI: 1.66–4.73]), but disappeared thereafter. The AP absolute risk in MMI users during the first 18 months of treatment was less than 0.4% in all sex and age classes. Conclusions Our results support the EMA warning, suggesting an increased risk of AP associated with MMI use. However, such an increase seems limited to the first months of MMI treatment. Moreover, in absolute terms, the probability of AP is low among patients, well below 1%.

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