Hospitalization For Acute Myocardial Infarction Research Articles

Fagerstrom score predicts smoking status six months after hospitalization for acute myocardial infraction:a prospective study

Abstract Backround Cardiovascular patients who quit smoking reduce their risk for future disease and mortality by 1/3 after 2 years. Despite this, more than half of all cardiac patients continue to smoke after being discharged from the hospital. Fagerstrom score is a validated marker of nicotine addiction in smokers. Purpose The aim of this study is to investigate the predictive value of the Fargestrom score (F.Sc) as a smoking cessation tool in patients with acute myocardial infarction (AMI) at 3 and 6 months after discharge. Methods We investigated a) the predictive value of F.Sc for the smoking status in patients early after AMI and b) the effectiveness of medically assisted smoking cessation programs in the prevention of relapsing to smoking post discharge. In 103 smokers (58±12 years,79.6% males) we assessed F.Sc during hospitalization for AMI. Patients filled a questionnaire during a face-to-face interview were followed-up at 3 and 6 months. The questionnaire was divided into the following sections: demographics, habits related to smoking, knowledge of smoking risks to health and methods to quit smoking. We recorded the type of MI, number and type of diseased coronary vessels, peak cardiac enzymes levels, left ventricular ejection fraction by echocardiography, intervention during hospitalization, previous medical history. The hospital anxiety and depression scale (HADS) were used to assess the patient’s mental health condition. For the evaluation of nicotine addiction, we use F.Sc. Results 59 people were hospitalized for STEMI and 44 for NSTEMI. The peak levels of high-sensitivity (hs)-troponin T during hospitalization were 3843.2 [991.3–9338.8] ng/mL. 100 AMI patients underwent PCI and 3 received thrombolysis. All patients were smoking conventional cigarettes before admission for AMI. 29 (28.2%) οf participants had a previous diagnosis of CAD, 55 (53.4%) had hypertension, 49 (47.6%) had hyperlipidemia. The mean HADS-D value was 7.4 ± 1.6, and only 20/103 (19.41%) participants had HADS-D score equal or greater than 10. 28 patients (27.2%) did not quit smoking throughout the 6 months of follow-up (F.Sc: 8.1±1.6), 39 patients (37.8%) ceased smoking at 3 months but relapsed to smoking at 6 months (score:6.8±2.1) and only 34 (33%) had ceased smoking for 6 consecutive months (F.Sc:5.2±2 P<0.05 for all comparisons between subgroups). Out of 73 patients that abstained from smoking the first 3 months post-AMI, those who participated in a smoking cessation program displayed lower rate of relapsing to smoking compared with those who opted to cease smoking without any support(33.3% vs 61.8% p=0.012). Conclusion Fagerstrom score was found to be a valid quantitative predictor of smoking cessation in the period of 6-months follow-up AMI. Patients who participated in a smoking cessation program displayed lower relapse rates suggesting the effectiveness of these programs for smoking cessation in AMI patients.F.Sc and different smoking behaviorsAssociation of F.Sc with smoking status

Clinical profile and incidence of 36-month cardiovascular events in patients with MINOCA: a regional registry of 126 patients in a tertiary cardiology hospital

Abstract Introduction Atherosclerotic plaque rupture is the main etiology of acute myocardial infarction (AMI). In 5% to 6% of AMIs, however, no obstructive lesions greater than 50% are observed, which are then classified as MINOCA (Myocardial Infarction with Non-obstructive Coronary Arteries).The paradigm of MINOCA as a benign condition has been revisited in recent years, as reduced survival rates and a higher risk of subsequent AMIs have been observed when compared to control groups. Purpose To describe the clinical profile and the risk of cardiovascular outcomes in patients diagnosed with MINOCA in a tertiary cardiology hospital between March 2000 and June 2022. Methods In this single-center cohort, all patients meeting the diagnostic criteria for MINOCA with (1) AMI, as follows: (a) no coronary stenosis ≥ 50% in any potential infarct-related artery; and (b) no other clinically overt specific cause for the acute presentation were evaluated with a median follow-up of 30(9.5-67.3) months. Information was obtained by medical chart. Sample characteristics were described in frequencies and median values(p25%-p75%). The incidence of a new cardiovascular event within 36 months after the MINOCA was estimated using the Kaplan-Meier method and the log-rank test applied to compare groups, accompanied by confidence intervals at 95% and an alpha of 5%(R 3.6.1 for MacOS). Results Of the 126 patients, 57.1% were women about 50 years of age (42.0-57.8). 20.6% had diabetes, 47.6% dyslipidemia, 60.3% hypertension and 20% a previous AMI. The predominant clinical presentation was NSTEMI (55.6%) (Table 1), and 7 patients had an episode of aborted sudden death during hospitalization. 38.1% of patients did not have an identified etiology. The most prevalent pathophysiological mechanism was plaque disruption (16.7%), followed by coronary thromboembolism (13.5%) and spontaneous coronary dissection (SCAD) (13.5%). Among the less frequent causes, we had vasospasm (7.1%) and myocardial bridge (2.4%). Only 3.2% underwent optical coherence tomography (OCT) or intravascular ultrasound (IVUS). No provocative testing was performed. 44.4% underwent cardiac magnetic resonance (CMR), within a median time to perform of 180.0 (60.0-707.5) days after the event. Regarding the discharged medical therapy, 79.4% had a beta-blocker and ACEI/ARB prescribed, 14.3% started anticoagulation and only 34.1% received DAPT. The incidence of a composite outcome (CV death, new AMI, stroke and cardiovascular hospitalization) at 36 months was 15% (CI95% 8.9%-24.6%)(Figure 2). The incidence of new MI was 6.3%(N=8), of stroke 2.4% (N=3), and of cardiovascular hospitalization 17.5%(N=22), with only one death. Conclusion The risk of the primary outcome in 36 months is worthy of note. Notably, most of the incidence was attributable to CV hospitalization. An important number of patients were discharged without a known etiology for their clinical presentation, and, consequentially, lacked individualized treatment.Figure 1.Outcomes

Abstract 13086: National Trends in Timely Ambulatory Follow-Up After Acute Myocardial Infarction and Congestive Heart Failure Cospitalizations Among Medicare Beneficiaries

Introduction: Following hospitalization for acute myocardial infarction (AMI) or congestive heart failure (CHF), close outpatient follow-up is warranted for symptom monitoring and initiation or titration of evidence-based therapies. Objective: To describe temporal trends in ambulatory care following CHF and AMI hospitalizations, between 2010 and 2019. Methods: We examined a 100% sample of Medicare fee-for-service beneficiaries discharged to the community after an AMI or CHF hospitalization. We assessed quarterly rates of timely post-discharge cardiology and primary care follow-up, defined as receipt of an ambulatory visit within 14 days of discharge. We assessed trends for five subgroups based upon known disparities in cardiovascular outcomes: sex, race/ethnicity, Medicaid dual-eligibility, county-level social deprivation index, and rurality. Results: The AMI cohort included 1,680,916 hospitalizations (54.9% male, 9.4% Black, 81.7% White) and the CHF cohort included 4,256,405 hospitalizations (47.7% male, 16.2% Black, 75.0% White). Timely cardiology follow-up after AMI increased from 26.8% in 2010 to 39.4% in 2019 (absolute change 12.6%) while follow-up after CHF increased from 22.0% to 33.4% (absolute change 11.5%). The proportion of patients without cardiology or primary care follow-up after AMI decreased to 36.1% in 2019 and to 41.6% for CHF. Though rates of timely follow-up increased for all demographic groups, female, Black, Hispanic, Medicaid dual-eligible patients, patients residing in rural areas, and patients residing in counties with high social deprivation were less likely to receive follow-up throughout the study. Conclusions: Rates of timely ambulatory care after AMI and CHF hospitalization have improved, but the majority of patients do not receive follow-up within 14 days of discharge. Efforts to improve post-hospital cardiology and primary care follow-up have the potential to improve clinical outcomes and reduce disparities.

Abstract 16309: Impact of the Pandemic on AMI Hospitalizations and Outcomes: A Comprehensive Medicare Fee-for-Service Analysis

Introduction: Studies suggest hospitalizations for acute myocardial infarction (AMI) declined early in the COVID-19 pandemic, but national patterns during the entire pandemic are not well characterized. This study aims to characterize the changes in AMI hospitalizations and 30-day mortality rates among Medicare Fee-For-Service (FFS) beneficiaries during the pandemic. Methods: We used Medicare FFS Part A data from March 2014 to November 2021 consisting of people aged ≥65 years. The dataset was divided by quarters each representing the four seasons, March 2014 to February 2020 defined as the prepandemic phase, March 2020 to May 2020 defined as the early pandemic phase, and June 2020 to August 2021 as the late pandemic phase. Patients with a principal discharge diagnosis of AMI were identified using ICD-9 and 10 codes. The number of AMI hospitalizations and crude 30-day mortality was calculated for each quarter. Results: Before the pandemic, number of AMI hospitalizations in the US were gradually declining from 48,258 per quarter in Q2 2017 to 42,639 in Q2 2019 (12 % decrease compared with 2017) with regular seasonal increases during the winter months (Q1). Thereafter, a sharp decline to 29,446 in Q2 2020 (31% decrease compared with 2019) was observed followed by a return to 34,105 in Q2 2021 (20% decrease compared with 2019). The crude 30-day mortality rate was 12.3% in the 12 months before the pandemic but increased to 13.3% in Q2 2020 during the early pandemic and remained the same at 13.3% after Q3 2020. Conclusions: In the US Medicare fee-for-service population, the number of AMI hospitalizations was in a steady decline before the pandemic, but dramatically declined during the first 3 months of the pandemic. In contrast, the crude 30-day mortality increased during the pandemic. Why these changes occurred remains a source of continuing investigation.

Abstract 18180: Contemporary Nationwide Trends in Major Adverse Cardiac and Cerebrovascular Events in Young Hospitalized Adults With Dependent Cannabis Use in Absence of Concomitant Tobacco, Alcohol or Cocaine Use Disorder, 2016-2019

Introduction: Recreational cannabis use has been on the rise among young adults in recent years. Dependent cannabis use disorder (CUD) has been linked to various cardiac events, but its impact on young adults in the absence of concomitant substance abuse remains unclear. We aim to analyze the nationwide trends in hospitalizations for major adverse cardiac and cerebrovascular events (MACCE) in this specific population. Methods: We identified hospitalized young adults (18-44 years) using National Inpatient Sample (2016 -2019), excluding those with concomitant substance abuse (tobacco, alcohol, and cocaine). They were divided into CUD+ and CUD- groups. We assessed the trends in hospitalizations for MACCE, including all-cause mortality (ACM), acute myocardial infarction (AMI), cardiac arrest (CA), and acute ischemic stroke (AIS), using ICD 10 codes. Results: Of 27.4 million hospitalizations among young adults without other substance abuse, 4.2% (1.1 million) had CUD. The rates of hospitalizations for MACCE (1.71% vs. 1.35%), AMI (0.86% vs. 0.54%), CA (0.27% vs. 0.24%), and AIS (0.27 vs. 0.24%), were higher in the CUD+ group compared to the CUD- group (P < 0.001). However, the rate of ACM hospitalizations (0.30% vs. 0.44%) were lower in the CUD+ group. From 2016 to 2019, the CUD+ group exhibited a relative increase of 5% in MACCE and 20% in AMI hospitalizations, which were lower compared to the respective increases of 22% and 36% in the CUD- group (Ptrend<0.05). Additionally, there was a relative decrease of 13% in ACM hospitalizations among the CUD+ group, whereas the CUD- group experienced a relative increase of 10% (Ptrend<0.05). Conclusion: The CUD+ group had higher rates of MACCE admissions, but the growing trends were more pronounced in the CUD- group through the years. Interestingly, the CUD+ group exhibited lower rates of ACM compared to the CUD- group. Further research is needed to better understand this complex relationship.

Abstract 12409: Ambient Fine Particulate Matter and Ozone Air Pollution Are Differentially Associated With Hospitalization for Unstable Angina and Acute Myocardial Infarction During Wildfire and Inversion Seasons

Background: Short-term increases (days to weeks) in fine particulate matter (PM 2.5 ) air pollution are associated with hospitalization for acute coronary syndromes (ACS). A changing climate is shifting sources of PM 2.5 toward summer wildfires in the western US. This study evaluated if short-term increases in PM 2.5 and ozone were associated with ACS risks in wildfire (June-October) and winter inversion (Nov.-March) seasons. Methods: Case-crossover analyses examined N=21,414 subjects with emergency or inpatient hospitalization at 11 Intermountain hospitals for ACS, including the primary diagnosis of myocardial infarction (AMI, n=20,287) or unstable angina (USA, n=1,127). PM 2.5 data were collected in January 1, 1999 to March 31, 2022 (ozone: 2006-2022) from community monitors on Utah’s Wasatch Front. Odds ratios (OR) and 95% confidence intervals (CI) were computed by Poisson regression with adjustment for weather data. Results: Subjects averaged 66±14 years of age and 31.0% were female. Overall PM 2.5 increases were associated with concurrent day (lag 0 days) ACS hospitalizations (OR=1.024 per +10 μg/m 3 , CI: 1.004, 1.043, p=0.019), driven by AMI (OR=1.025 per +10 μg/m 3 , CI: 1.004, 1.045, p=0.017). USA admissions were delayed to the second week [lag moving average (mAvg) days 7-13] after PM 2.5 increases (OR=1.090 per +10 μg/m 3 , CI: 1.024, 1.159, p=0.007) and PM 2.5 associations with USA were strengthened by adjustment for ozone. Analyzed by wildfire and inversion seasons, PM 2.5 associations differed for AMI and USA (Figure). Short-term increases in ozone in wildfire season were associated with lower USA risk at lag 1, lag 2, 3-day mAvg 0-2, and 1-week mAvg 0-6 and lower AMI risk at mAvg 7-13, but not with inversion season risks. Conclusions: Short-term increases in PM 2.5 air pollution were associated with ACS hospitalizations for AMI and USA, with patterns of risk differing between wildfire and inversion seasons. Ozone increases were not associated with greater risk.

Effect of temperature fluctuations in cold seasons on acute myocardial infarction hospitalisations in northeast China: a retrospective observational cohort study

ObjectiveThis study aimed to determine the potential influence of ambient temperature on the incidence of acute myocardial infarction (AMI).DesignA retrospective observational cohort study.SettingChangchun, a northeastern city in China, has a...

The relationship between insulin resistance, serum alkaline phosphatase, and left ventricular dysfunction following myocardial infarction

The occurrence of heart failure following acute myocardial infarction (AMI) significantly increases the risk of post-infarction mortality. Alkaline phosphatase (AP) is considered to be an independent predictor of cardiovascular disease (CVD) and adverse outcomes. Furthermore, in recent years, alkaline phosphatase has been associated with insulin resistance (IR). Our aim was to investigate the correlation between IR substitutes (triglyceride-glucose (TyG) index, triglyceride to high-density lipoprotein cholesterol (TG/HDL-C) ratio), AP, and LV dysfunction in patients admitted after AMI. The retrospective study included 810 patients who underwent coronary angiography for myocardial infarction at the First Hospital of Hebei Medical University from August 2018 to December 2021. Patients were categorized into three groups based on their serum AP levels. Clinical characteristics at admission, cardiac echocardiography findings, coronary angiography results, and biochemical markers such as serum AP levels and triglycerides (TG) were recorded during hospitalization. Left ventricular ejection fraction (LVEF) was assessed using cardiac echocardiography conducted from the time of admission until the coronary angiography procedure. A total of 774 patients with AMI were included in this study. The TyG index is significantly correlated with the TG/HDL-C ratio. (R = 0.739, P < 0.001). Binary logistic regression analysis revealed that elevated serum AP (OR 2.598, 95% CI 1.331–5.071, P = 0.005), presence of the left anterior descending (LAD) artery as the infarct-related artery (IRA) (OR 2.452, 95% CI 1.352–4.449, P = 0.003), and triglyceride (TG) levels (OR 0.652, 95% CI 0.429–0.992, P = 0.046) were protective risk factor for an admission LVEF < 40% following AMI. The serum alkaline phosphatase and LAD as IRA are independent risk factors for severe reduction in LVEF during hospitalization for AMI. Conversely, triglyceride are independent protective factor for severe reduction in LVEF during AMI hospitalization.

Relationship Between Community-Level Distress and Cardiac Rehabilitation Participation, Facility Access, and Clinical Outcomes After Inpatient Coronary Revascularization.

Although disparities in cardiac rehabilitation (CR) participation are well documented, the role of community-level distress is poorly understood. This study evaluated the relationship between community-level distress and CR participation, access to CR facilities, and clinical outcomes. A retrospective cohort study was conducted on a 100% sample of Medicare beneficiaries undergoing inpatient coronary revascularization between July 2016 and December 2018. Community-level distress was defined using the Distressed Community Index quintile at the beneficiary zip code level, with the first and fifth quintiles representing prosperous and distressed communities, respectively. Outpatient claims were used to identify any CR use within 1 year of discharge. Beneficiary and CR facility zip codes were used to describe access to CR facilities. Adjusted logistic regression models evaluated the association between Distressed Community Index quintiles, CR use, and clinical outcomes, including one-year mortality, all-cause hospitalization, and acute myocardial infarction hospitalization. A total of 414 730 beneficiaries were identified, with 96 929 (23.4%) located in the first and 67 900 (16.4%) in the fifth quintiles, respectively. Any CR use was lower for beneficiaries in distressed compared with prosperous communities (26.0% versus 46.1%, P<0.001), which was significant after multivariable adjustment (odds ratio, 0.41 [95% CI, 0.40-0.42]). A total of 98 458 (23.7%) beneficiaries had a CR facility within their zip code, which increased from 16.3% in prosperous communities to 26.6% in distressed communities. Any CR use was associated with absolute reductions in mortality (-6.8% [95% CI, -7.0% to -6.7%]), all-cause hospitalization (-5.9% [95% CI, -6.3% to -5.6%]), and acute myocardial infarction hospitalization (-1.3% [95% CI, -1.5% to -1.1%]), which were similar across each Distressed Community Index quintiles. Although community-level distress was associated with lower CR participation, the clinical benefits were universally received. Addressing barriers to CR in distressed communities should be considered a significant priority to improve survival after coronary revascularization and reduce disparities.

Outcomes of Acute Myocardial Infarction in Female Patients With Type 1 Diabetes Mellitus

There is a paucity of data on acute myocardial infarction (AMI) outcomes for female patients with type 1 diabetes (T1DM) compared with men. The National Inpatient Sample Database was queried from 2011 to 2019 for relevant International Classification of Diseases, Ninth and Tenth Revision procedural and diagnostic codes. Hospitalizations with an admitting diagnosis of non-ST-elevation myocardial infarction or ST-elevation myocardial infarction were compared between male and female patients with T1DM. A multivariate logistic regression adjusting for baseline characteristics and primary diagnosis was performed. A p <0.001 was considered significant. A total of 50,020 hospitalizations for AMI in patients with T1DM were identified, of which 23,980 (47.9%) were women. The baseline characteristics are listed in Table 1. Women experienced similar rates of all-cause and inhospital mortality (5.0% vs 4.7%, p=0.082). However, after adjusting for baseline characteristics and primary diagnosis, women had higher odds of mortality (adjusted odds ratio [aOR] 1.26, 95% confidence interval [CI] 1.15 to 1.38). Women were less likely to undergo cardiac catheterization (65.7% vs 68.2%; aOR 0.90, 95% CI 0.86 to 0.94) and coronary artery bypass grafting (5.6% vs 6.9%; aOR 0.76, 95% CI 0.70 to 0.82, p <0.001 for both). There was no difference in the use of percutaneous coronary intervention (41.0% vs 41.9%; aOR 1.01, 95% CI 0.97 to 1.05, p=0.042). The female gender is not protective against AMI in patients with T1DM. Women with T1DM, on average, experience AMI at the same age as men, are less likely to undergo surgical revascularization, and have higher odds of mortality.

Association of prior bariatric surgery with financial and clinical outcomes of acute myocardial infarction

BackgroundSuperior clinical outcomes after hospitalization for cardiovascular-related disease such as acute heart failure have been linked with prior history of bariatric surgery, but similar analyses in acute myocardial infarction (MI) are currently limited. ObjectiveThis work examines clinical outcomes and resource utilization in patients with acute MI hospitalizations with a prior history of bariatric surgery. SettingAcademic university-affiliated hospital in the United States. MethodsAll adult patients with hospitalizations with a primary diagnosis of acute MI were queried using the 2016–2020 Nationwide Readmissions Database. The study population was comprised of patients with an International Classification of Diseases, Tenth Revision (ICD-10) diagnosis code for obesity (body mass index ≥35 kg/m2) as well as those with a prior history of bariatric surgery regardless of their body mass index status. Comparison was made between those with a prior history of bariatric surgery and those without. Univariate analysis and multivariate regression models were used to examine the association between bariatric surgery and outcomes of interest, which included in-hospital mortality, medical complications, and resource utilization. ResultsOf an estimated 2,736,606 hospitalizations for acute MI, 296,902 patients (10.8%) had a diagnosis of obesity and/or a prior history of bariatric surgery. The bariatric cohort was more frequently female and had a lower prevalence of congestive heart failure, chronic lung disease, diabetes, and electrolyte derangements than the nonbariatric cohort. After risk adjustment, prior history of bariatric surgery was associated with significantly lower odds of in-hospital mortality, cardiogenic shock, and acute kidney injury. Additionally, prior history of bariatric surgery was linked to a decreased duration of hospital stay and lower hospitalization costs as well as lower odds of nonhome discharge. ConclusionAmong acute MI patients with obesity, prior history of bariatric surgery was associated with decreased odds of in-hospital mortality, improved clinical outcomes, and lower resource utilization. Expansion of bariatric surgery programs may provide improved access to a medical intervention that is intertwined with cardiovascular health.

Incidence and Predictors of Acute Limb Ischemia in Patients With Acute Myocardial Infarction—Insight from National Readmission Database

Acute limb ischemia (ALI) has been a rare complication of acute myocardial infarction (AMI), however, with the increasing use of mechanical circulatory devices it is seen more frequently. The incidence and predictors of ALI in patients with AMI in contemporary clinical practice are unknown. A retrospective review of patients with index hospitalization for AMI in the Nationwide Readmission Database from 2016 to 2019 was done. We evaluated the annual incidence of ALI and its impact on outcomes. We used multivariate logistic regression analysis to determine predictors of ALI. In 1,283,586 patients with AMI, 3,971 patients (0.31%) had ALI and 365 (0.03%) had limb amputation. The 3 major predictors of ALI were peripheral artery disease (odds ratio [OR] 11.91, 95% confidence interval [CI]: 10.78 to 13.51), intravascular microaxial left ventricular assist device (OR 4.39, 95% CI 3.86 to 5.00), and veno-arterial extracorporeal membrane oxygenation (OR 4.37, 95% CI 3.19 to 6.01). Intra-aortic balloon pump had a substantially lower predictive ability (OR 1.81, 95% CI 1.63 to 2.0, p<0.0001) than other forms of mechanical circulatory support. The mortality rate in patients with ALI was significantly higher than those without ALI (19.49% vs 4.85%, p<0.0001). Patients who developed ALI had higher rates of amputation (1.59% vs 0.02%, p<0.0001). This observational nationwide study showed that ALI is an important complication in patients with AMI and is more frequently seen in patients who have peripheral artery disease, and require a left ventricular assist device or venoarterial extracorporeal membrane oxygenation. This complication was also associated with significantly higher in-hospital mortality.

A time-series analysis of short-term ambient ozone exposure and hospitalizations from acute myocardial infarction in Henan, China

Epidemiological studies in recent years have identified an association between exposure to air pollutants and acute myocardial infarction (AMI); however, the association between short-term ozone (O3) exposure and AMI hospitalization remains unclear, particularly in developing countries. Therefore, this study collected information on 24,489 AMI patients, including daily air pollutant and meteorological data in Henan, China, between 2016 and 2021. A distributed lagged nonlinear model combined with a Poisson regression model was used to estimate the nonlinear lagged effect of O3 on AMI hospitalizations. We also quantified the effects of O3 on the number of AMI hospitalizations, hospitalization days, and hospitalization costs. The results showed that single- and dual-pollution models of O3 at lag0, lag1, and lag (01–07) were risk factors for AMI hospitalizations, with the most significant effect at lag03 (RR = 1.132, 95% CI:1.083–1.182). Further studies showed that males, younger people (15–64 years), warm seasons, and long sunshine duration were more susceptible to O3. Hospitalizations attributable to O3 during the study period accounted for 11.66% of the total hospitalizations, corresponding to 2856 patients, 33,492 hospital days, and 90 million RMB. Maintaining O3 at 10–130 µg/m3 can prevent hundreds of AMI hospitalizations and save millions of RMB per year in Henan, China. In conclusion, we found that short-term exposure to O3 was significantly associated with an increased risk of hospitalization for AMI in Henan, China, and that further reductions in ambient O3 levels may have substantial health and economic benefits for patients and local healthcare facilities.Graphical

Mortality in Patients Hospitalized With Acute Myocardial Infarction Without Standard Modifiable Risk Factors: The ARIC Study Community Surveillance.

Background Prevention strategies targeting standard modifiable cardiovascular risk factors (SMuRFs; diabetes, hypertension, smoking, hypercholesterolemia) are critical to improving cardiovascular disease outcomes. However, acute myocardial infarction (AMI) among individuals who lack 1 or more SMuRFs is not uncommon. Moreover, the clinical characteristics and prognosis of SMuRFless individuals are not well characterized. Methods and Results We analyzed AMI hospitalizations from 2000 to 2014 captured by the ARIC (Atherosclerosis Risk in Community) study community surveillance. AMI was classified by physician review using a validated algorithm. Clinical data, medications, and procedures were abstracted from the medical record. Main study outcomes included short- and long-term mortality within 28 days and 1 year of AMI hospitalization. Between 2000 and 2014, a total of 742 (3.6%) of 20 569 patients with AMI were identified with no documented SMuRFs. Patients without SMuRFs were less likely to receive aspirin, nonaspirin antiplatelet therapy, or beta blockers and less often underwent angiography and revascularization. Compared with those with one or more SMuRFs, patients without SMuRFs had significantly higher 28-day (odds ratio, 3.23 [95% CI, 1.78-5.88]) and 1-year (hazard ratio, 2.09 [95% CI, 1.29-3.37]) adjusted mortality. When examined across 5-year intervals from 2000 to 2014, the incidence of 28-day mortality significantly increased for patients without SMuRFs (7% to 15% to 27%), whereas it declined for those with 1 or more SMuRFs (7% to 5% to 5%). Conclusions Individuals without SMuRFs presenting with AMI have an increased risk of all-cause mortality with an overall lower prescription rate for guideline-directed medical therapy. These findings highlight the need for evidence-based pharmacotherapy during hospitalization and the need to discover new markers and mechanisms for early risk identification in this population.

Derivation and Validation of Spontaneous Coronary Artery Dissection Prediction Score in Patients With Myocardial Infarction

Spontaneous coronary artery dissection (SCAD) is an important cause of acute myocardial infarction (AMI); however, the prevalence of SCAD and its predictors in AMI are unknown. We sought to derive and validate a simple score that can help predict SCAD in patients with AMI. We analyzed the Nationwide Readmissions Database and created a risk score for SCAD in patients with an index hospitalization for AMI. We used a multivariate logistic regression analysis to determine the independent predictors of SCAD, and each was assigned points proportional to its regression coefficient. Among 1,155,164 patients with AMI, 8,630 (0.75%) had SCAD. Based on the derivation cohort, the independent predictors of SCAD were fibromuscular dysplasia (odds ratio [OR] 67.0, 95% confidence interval [CI] 42.0 to 107.9, p <0.01), Marfan or Ehlers-Danlos syndrome (OR 4.7, 95% CI 1.7 to 12.5, p <0.01), polycystic ovarian syndrome (OR 5.4, 95% CI 3.0 to 9.8, p <0.01), female gender (OR 1.99, 95% CI 1.9 to 2.1, p <0.01), and aortic aneurysm (OR 1.41, 95% CI 1.1 to 1.7, p <0.01). The SCAD risk score included fibromuscular dysplasia (5 points), Marfan or Ehlers-Danlos syndrome (2 points), polycystic ovarian syndrome (2 points), female gender (1 point), and aortic aneurysm (1 point). The C-statistics of the score were 0.58 (derivation cohort) and 0.61 (validation cohort). In conclusion, the SCAD score is an easy bedside clinical tool that can help clinicians identify patients with AMI who are at risk for SCAD.

Body Weight in Adolescent Men in Sweden and Risk of an Early Acute Coronary Event: A Prospective Population-Based Study.

Background Coronary heart disease remains the dominant cause of death worldwide. To improve cardiovascular disease prevention, knowledge of early key risk factors, especially those that are modifiable, is essential. The ongoing global obesity epidemic is of particular concern. We aimed to determine whether body mass index at conscription predicts early acute coronary events among men in Sweden. Methods and Results This was a population-based Swedish cohort study of conscripts (n=1 668 921; mean age, 18.3 years; 1968-2005), with follow-up through linkage to the nationwide Swedish patient and death registries. Risk of a first acute coronary event (hospitalization for acute myocardial infarction or coronary death) during follow-up (1-48 years) was calculated with generalized additive models. Objective baseline measures of fitness and cognition were included in the models in secondary analyses. During follow-up, there were 51 779 acute coronary events, of which 6457 (12.5%) were fatal within 30 days. Compared with men at the lowest end of the normal body mass index spectrum (body mass index, 18.5 kg/m2), an increasing risk for a first acute coronary event was observed, with hazard ratios (HRs) peaking at 40 years of age. After multivariable adjustments, men with a body mass index of 35 kg/m2 had an HR of 4.84 (95% CI, 4.29-5.46) for an event before the age of 40 years. Conclusions An increased risk of an early acute coronary event was detectable within normal levels of body weight at the age of 18 years, increasing to almost 5-fold in the highest weight category at 40 years of age. Given increasing levels of body weight and prevalence of overweight and obesity in young adults, the current decrease in coronary heart disease incidence in Sweden may flatten or even reverse in the near future.

Characteristics and outcomes of 795 patients with renal cell cancer following hospitalization for acute myocardial infarction.

e16516 Background: Renal cell cancer (RCC), as with many cancers, is associated with a hypercoagulable state as well as the potential risk of anemia that can lead to various cardio/cerebrovascular complications. Some of the treatments used in RCC like vascular endothelial growth factor (VEGF) inhibitors increase the thrombotic risk. Thus, the management of RCC patients following an episode of Acute Myocardial Infarction (AMI) can be more complex than that of the general population. We, therefore, conducted an in-depth analysis to study the characteristics and outcomes of AMI among RCC patients in the United States. Methods: We used the 2019 National Inpatient Sample (NIS), a yearly set of hospitalization records from the United States. Patients with a primary diagnosis of AMI and a diagnosis of RCC were identified. We excluded all patients below the age of 18 and those with other malignancies. Multiple patient characteristics were compared via Chi-Square tests. We also compared the odds of requiring Coronary artery bypass graft surgery (CABG) and Percutaneous coronary intervention (PCI) among the two groups. The overall mortality rate and adjusted odds ratios were estimated. Results: Our study found 633410 cases of AMI among adults in the United States in 2019. Among them, 795 (0.1%) had a diagnosis of RCC. A higher number of RCC patients were Male (75.5% vs. 62.7%, p &lt; 0.01), racially classified as White (77.1% vs. 73.0%, p &lt; 0.01), aged 60 or more (88.7% vs. 69.8%, p &lt; 0.01), covered by Medicare (72.3% vs. 56.1%, p &lt; 0.01), had hypertension (66.7% vs. 82.7%, p &lt; 0.01), were diabetics (45.9% vs. 41.4%, p &lt; 0.01) or had anemia (42.1% vs. 22.1%, p &lt; 0.01). A lower percentage of RCC patients underwent various procedures following their AMI, as only 6.3% underwent CABG (vs. 7.5% in the non-RCC group), and 27.6% (vs. 45.8% in the non-RCC group) underwent PCI. Patients with RCC were also older (71.62 years vs. 66.64 years, p &lt; 0.01), had a longer hospitalization (5.51 days vs.4.34 days, p &lt; 0.01), which was also associated with a more expensive mean hospital charge ($114572.98 vs. $106241.24). Unfortunately, we also found that the presence of RCC among AMI patients was also linked with a higher odds ratio of mortality (7.5% vs. 4.4%, aOR 1.643, 95% CI 1.249- 2.160, p &lt; 0.01). Conclusions: Our study confirms various differences in patient characteristics among AMI cases with and without RCC. While fewer RCC patients underwent procedures such as CABG or PCI, they experienced a less favorable outcome, including a longer and more costly stay and higher odds of in-hospital death. It is thus vital to screen RCC patients for potential risk factors for AMI, promote primary and secondary prevention measures, and improve hospitalization protocols to identify potential complications.

Impact of mineralocorticoid receptor gene NRC2 on the prediction of arrhythmia after acute myocardial infarction

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Patients with acute myocardial infarction (AMI) suffer from distress that causes a rise in cortisol (stress hormone) which acts through glucocorticoid receptors (GR) and mineralocorticoid receptors (MR). Both receptors are present in cardiomyocyte nuclei (1-4). The animal model study in 2017 showed that activated MR increases cardiomyocyte oxidative stress leading to adverse electrophysiological remodelling that causes arrhythmias. 1.4% of tachyarrhythmias which is the main cause of cardiac death occur within the first month in AMI patients. MR are encoded by the human gene NR3C2 (nuclear receptor subfamily 3 group C member (5-6). Thus, we hypothesized that NR3C2 rs2070950, rs4635799 and rs5522 gene polymorphisms might have an extensive impact on rhythm disorders that occur in a cohort of AMI patients. Aim The aim is to evaluate the impact of the NR3C2 rs2070950, rs4635799 and rs5522 genes polymorphism in patients that developed rhythm and conduction disorders after suffering AMI. Methods The study included 301 patients treated at our hospital after suffering from AMI; all study subjects underwent primary percutaneous coronary intervention (PCI) and guideline-directed medical treatment (1). Patients' blood samples that were collected upon arrival had cortisol and troponin I levels checked and SNPs of the NR3C2 gene (rs2070950, rs4635799 and rs5522) assessed. To avoid inaccuracies all patients with a previous history of coronary syndrome or PCI were excluded. Rhythm conduction disorders and NR3C2 gene polymorphism were analyzed using the exact Fisher’s test. All the statistical analyses were performed with SPSS 27.0 software. The value of p &amp;lt; 0.05 was considered statistically significant. Results Patients with ventricular and atrial events in the early phase of AMI had higher levels of serum cortisol than the patients that did not have rhythm disorders (p=0.001) (Table 1). Rhythm disorders such as ventricular tachycardia (VT), ventricular flutter (VF) and atrial flutter or atrial fibrillation (AF/AFL) that occurred during hospitalization for AMI were notably associated with rs5522 gene polymorphism. During a hospital stay for AMI higher rs5522 TT genotype frequency was noticed in patients with AF/AFL than in patients without. C allele recurrence was 19.6%. Moreover, the protective effect was detected for AF/AFL there is also a protective effect in VA. (Table 2). Despite this, the gene polymorphism and high-grade atrioventricular block (HAVB) were unrelated. Genes rs2070950 and rs4635799 were not found significant to rhythm and conduction disorders. Conclusions Patients with the rs5522 TT allele are more prone to experience a higher frequency of arrhythmias. However, if at least one rs5522 C is found it associates with a smaller risk of arrhythmias post-AMI, meaning that this gene possibly limits damaging effects on cardiomyocytes that are caused by cortisol.

P66 PROGNOSTIC IMPACT OF PERCUTANEOUS CORONARY INTERVENTION IN ACUTE MYOCARDIAL INFARCTION PATIENTS OLDER THAN 75 YEARS. REAL–WORLD FINDINGS FROM THE LOMBARDY REGION

Abstract Background Older patients, generally defined as individuals age &amp;gt;75 years, are less likely to receive percutaneous coronary intervention (PCI) for treatment of acute myocardial infarction (AMI) compared to younger patients. This is due to the paucity of evidence derived from randomized trials, concerns about possible PCI–related side effects, and multimorbidity. We investigated the prognostic impact of PCI in a large population of patients hospitalized with AMI in the period 2003–2018, by using the administrative Lombardy Health Database. Methods We analyzed data of all patients &amp;gt;75 years hospitalized with AMI (both STEMI and NSTEMI) from 2003 to 2018 in Lombardy. Patients were grouped according to whether they were treated or not with PCI during index hospitalization. The primary outcome was in–hospital mortality. One–year mortality and 1–year re–hospitalization for acute heart failure (AHF) or AMI were considered as secondary endpoints. Results During the study period, 116,063 patients (mean age 83±6; 48% males; 46% STEMI) were hospitalized with a primary diagnosis of AMI. Thirty–seven percent of them (n=42,912) were treated with PCI. The in–hospital mortality rate in the entire cohort was 12%. It was significantly lower in patients treated with PCI than in those not treated with PCI (6% vs. 15%; P&amp;lt;0.0001). In the overall population, 1–year mortality was 32% and 1–year re–hospitalization for AHF/AMI was 19%. Both these endpoints were less frequent in PCI–treated patients (16% vs. 41% and 15% vs. 21%, respectively; P&amp;lt;0.0001). The adjusted risk of the study endpoints was significantly lower in patients treated with PCI: OR 0.37 (95% CI 0.36–0.39) for in–hospital mortality; HR 0.37 (95% CI 0.36–0.38) for 1–year mortality; HR 0.74 (95% CI 0.71–0.77) for 1–year re–hospitalization for AHF/AMI. Similar results were found in STEMI and NSTEMI patients considered separately. Conclusions Our real–world data showed that in patients with AMI &amp;gt;75 years of age, PCI use is associated with a significantly lower in–hospital mortality and up to 1 year. This work was partly financed by the Italian Ministry of Health and the Lombardia Region (Grant NET–2016–02364191; EASY–NET)

Impact of Diabetes on Outcomes in Patients Hospitalized With Acute Myocardial Infarction: Insights From the Atherosclerosis Risk in Communities Study Community Surveillance.

Background Diabetes is associated with increased risk of acute myocardial infarction (AMI). The demographic trends, clinical presentation, management, and outcomes of patients with diabetes who are hospitalized with AMI have not been recently reported. Methods and Results The ARIC (Atherosclerosis Risk in Communities) study conducted hospital surveillance of AMI in 4 US communities. AMI was classified by physician review using a validated algorithm. Medications and procedures were abstracted from the medical record. From 2000 to 2014, 21 094 weighted hospitalizations for AMI were sampled. The prevalence of diabetes steadily increased, from 35% to 41% to 43% (P-trend<0.0001) across 2000 to 2004, 2005 to 2009, and 2010 to 2014, respectively. Patients with diabetes were older (61 versus 59 years of age), more often Black (44% versus 31%), and more commonly women (42% versus 34%). The burden of cardiovascular comorbidities was higher with diabetes and increased temporally. Patients with diabetes less often presented with ST-segment elevation (9% versus 17%) or acute chest pain (72% versus 80%), and had higher mean GRACE (Global Registry of Acute Coronary Syndrome) score (123 versus 109), Thrombolysis in Myocardial Ischemia (TIMI) score (4.3 versus 4.0), and Killip class (1.9 versus 1.5). Patients with diabetes had a lower adjusted probability of receiving aspirin (relative probability, 0.95 [95% CI, 0.91-0.99]), nonaspirin antiplatelets (0.93 [95% CI, 0.86-0.99]), coronary angiography (0.85 [95% CI, 0.78-0.92]), and coronary revascularization (0.85 [95% CI, 0.76-0.92]). Diabetes was associated with a 52% higher hazard of all-cause 1-year mortality (hazard ratio, 1.52 [95% CI, 1.23-1.89]). Conclusions Diabetes is associated with higher risk of death in patients hospitalized with AMI, highlighting the need for adherence to evidence-based therapies in this high-risk population.