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Determinants of Insufficient Optimal Medical Therapy after Acute Myocardial Infarction.

ABSTRACT: Objective Although the importance of evidence-based optimal medical therapy (OMT) after acute myocardial infarction (AMI) has been recognized, the prescription rate of OMT is not sufficiently high in real-word clinical settings. The purpose of this study was to identify the clinical characteristics of AMI patients who did not receive OMT. Methods The present study was a retrospective study. OMT was defined as the combination of antiplatelet therapy, angiotensin-converting enzyme (ACE) inhibitors/angiotensin II receptor blockers (ARBs), beta-blockers, and statins at the time of hospital discharge. Non-OMT was defined as the lack of either antiplatelet therapy, ACE inhibitors/ARBs, beta-blockers, or statins. Results A total of 457 AMI patients were included as the final study population, and 98 patients (22.4%) lacked at least 1 OMT medication. The prescription rates of antiplatelet therapy, ACE inhibitors/ARBs, beta-blockers, and statins were 98.7%, 87.5%, 90.4%, and 96.7%, respectively. In the multivariate logistic regression analysis, age [per 1-year increase: odds ratio (OR) 1.033, 95% confidence interval (CI) 1.007-1.059, p=0.014], hemodialysis (vs. no hemodialysis: OR 2.707, 95% CI 1.082-6.774, p=0.033), estimated glomerular filtration rate <30 mL/min/1.73 m2 without hemodialysis (OR 4.585, 95% CI 1.975-10.644, p<0.001), AMI caused by vasospastic angina (VSA) (vs. no VSA: OR 13.198, 95% CI 1.809-96.260, p=0.011), and asthma (vs. no asthma: OR 7.241, 95% CI 1.716-30.559, p=0.007) were significantly associated with non-OMT, whereas heart rate on admission (per 1-bpm increase: 0.987, 95% CI 0.975-0.999, p=0.033), any PCI (vs. no PCI: OR 0.156, 95% CI 0.066-0.373, p<0.001), and ST-elevation myocardial infarction (STEMI) (vs. NSTEMI: OR 0.384, 95% CI 0.218-0.675, p=0.001) were inversely associated with non-OMT. Conclusion An advanced age, VSA, bradycardia, asthma, impaired renal function, non-PCI revascularization, and non-ST-elevation myocardial infarction were significantly associated with non-OMT.

SUBMITTER: Haraguchi Y

PROVIDER: S-EPMC7364243 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Determinants of Insufficient Optimal Medical Therapy after Acute Myocardial Infarction.

Haraguchi Yumiko Y Sakakura Kenichi K Yamamoto Kei K Taniguchi Yousuke Y Tsukui Takunori T Seguchi Masaru M Wada Hiroshi H Momomura Shin-Ichi SI Fujita Hideo H

Internal medicine (Tokyo, Japan) 20200319 12

Objective Although the importance of evidence-based optimal medical therapy (OMT) after acute myocardial infarction (AMI) has been recognized, the prescription rate of OMT is not sufficiently high in real-word clinical settings. The purpose of this study was to identify the clinical characteristics of AMI patients who did not receive OMT. Methods The present study was a retrospective study. OMT was defined as the combination of antiplatelet therapy, angiotensin-converting enzyme (ACE) inhibitors ...[more]

PMID: 32188806

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Project description:BackgroundOxygen (O2) is widely used in people with acute myocardial infarction (AMI). Previous systematic reviews concluded that there was insufficient evidence to know whether oxygen reduced, increased or had no effect on heart ischaemia or infarct size. Our first Cochrane review in 2010 also concluded there was insufficient evidence to know whether oxygen should be used. Since 2010, the lack of evidence to support this widely used intervention has attracted considerable attention, prompting further trials of oxygen therapy in myocardial infarction patients. It is thus important to update this Cochrane review.ObjectivesTo assess the effects of routine use of inhaled oxygen for acute myocardial infarction (AMI).Search methodsWe searched the following bibliographic databases on 6 June 2015: the Cochrane Central Register of Controlled Trials (CENTRAL) in the Cochrane Library, MEDLINE (OVID), Embase (OVID), CINAHL (EBSCO) and Web of Science (Thomson Reuters). LILACS (Latin American and Caribbean Health Sciences Literature) was last searched in September 2016. We also contacted experts to identify eligible studies. We applied no language restrictions.Selection criteriaRandomised controlled trials in people with suspected or proven AMI (ST-segment elevation myocardial infarction (STEMI) or non-STEMI) within 24 hours after onset, in which the intervention was inhaled oxygen (at normal pressure) compared to air, regardless of co-therapies provided to participants in both arms of the trial.Data collection and analysisTwo authors independently reviewed the titles and abstracts of identified studies to see if they met the inclusion criteria and independently undertook the data extraction. We assessed the quality of studies and the risk of bias according to guidance in the Cochrane Handbook for Systematic Reviews of Interventions. The primary outcome was death. The measure of effect used was the risk ratio (RR) with a 95% confidence interval (CI). We used the GRADE approach to evaluate the quality of the evidence and the GRADE profiler (GRADEpro) to import data from Review Manager 5 and create 'Summary of findings' tables.Main resultsThe updated search yielded one new trial, for a total of five included studies involving 1173 participants, 32 of whom died. The pooled risk ratio (RR) of all-cause mortality in the intention-to-treat analysis was 0.99 (95% CI 0.50 to 1.95; 4 studies, N = 1123; I2 = 46%; quality of evidence: very low) and 1.02 (95% CI 0.52 to 1.98; 4 studies, N = 871; I2 = 49%; quality of evidence: very low) when only analysing participants with confirmed AMI. One trial measured pain directly, and two others measured it by opiate usage. The trial showed no effect, with a pooled RR of 0.97 for the use of opiates (95% CI 0.78 to 1.20; 2 studies, N = 250). The result on mortality and pain are inconclusive. There is no clear effect for oxygen on infarct size (the evidence is inconsistent and low quality).Authors' conclusionsThere is no evidence from randomised controlled trials to support the routine use of inhaled oxygen in people with AMI, and we cannot rule out a harmful effect. Given the uncertainty surrounding the effect of oxygen therapy on all-cause mortality and on other outcomes critical for clinical decision, well-conducted, high quality randomised controlled trials are urgently required to inform guidelines in order to give definitive recommendations about the routine use of oxygen in AMI.

Project description:Abstract Funding Acknowledgements Type of funding sources: None. Background Adherence to medical therapy after myocardial infarction (MI) is a crucial part of patient care and indispensable for reaching clinical goals, however, data from low to middle income countries (LMIC) regarding adherence and persistence of optimal medical treatment (OMT) is scarce. Purpose To evaluate adherence and persistence to OMT after acute coronary syndrome (ACS) in a cohort of patients with ST elevation myocardial infarction (STEMI) in a low to middle income country. Methods We conducted a survey study evaluating adherence and persistence of OMT after 6 months of the index event in patients with STEMI. Patients were surveyed via phone call using the simplified medication adherence questionnaire (SMAQ) tool, which has been previously validated (both in English and Spanish) as a clinical tool to evaluate adherence to medication. We evaluated persistence of OMT as well. A secure electronic database was constructed to capture information, regarding adherence and persistence, and other clinically relevant variables. Study population The study included consecutive patients aged 18-99 years old with the diagnosis of STEMI form Mexico City’s STEMI Network, who received either pharmacoinvasive strategy (PIS) or Primary Percutaneous Coronary Intervention (pPCI) during the first 12 hours from symptom onset. This population is derived from the PHASE-Mx study (ClinicalTrials.gov Identifier: NCT03974581), which results have been previously published. Results A total of 602 patients were initially screened; among these, 158 patients (26.2%) were lost to contact, 5 patients (n = 0.008%) refused to answer and 65 patients (10.7%) died during follow up. The final analytic sample consisted of 375 patients; among them, 192 (51.2%) received primary PCI and 183 (48.8%) received pharmacoinvasive strategy. Mean age was 58 + 10 years old and most of the patients were male (90.1%). Hypertension (44.8%) and diabetes (32.0%) were common. Mean follow-up time after index STEMI was 650 (IQR: 416-832) days. After SMAQ evaluation, only 26.1% of the patients were considered to be adherent to their medications (>95% compliance), as shown in the Table 1. Persistence of OMT after STEMI included: ASA (84.6%), P2Y12i (71.5%), statin (83.6%), ACEI/ARB (77.1%) and beta blocker (63.7%) (Table 2). Conclusions In patients with STEMI in a low to middle income country, persistence and adherence to OMT were low. Actions to improve adherence to therapy after mayor cardiovascular events are needed. Risk factors associated to poor adherence included diabetes (OR 0.46), age (OR 0.76) and atrial fibrillation (OR 0.42).

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Determinants of Insufficient Optimal Medical Therapy after Acute Myocardial Infarction.

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Determinants of Insufficient Optimal Medical Therapy after Acute Myocardial Infarction.

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