Empagliflozin was shown to reduce risk of cardiovascular death among high-risk patients with type 2 diabetes mellitus (1), which led to the U.S. Food and Drug Administration (FDA) expanding its ...labeling in December 2016 for reducing cardiovascular risk. ...we sought to determine specialty-specific prescriber trends of SGLT2i in a large U.S. tertiary care system over the last 5 years. ...these data from an integrated tertiary care system may not be generalizable to all settings.
Despite significant progress in primary prevention, the rate of myocardial infarction has not decreased in young adults. We sought to compare the risk factor profiles and outcomes between individuals ...who experienced a first myocardial infarction at a very young (≤40 years) and a young (age 41-50 years) age.
We evaluated all patients ≤50 years of age admitted with a Type 1 myocardial infarction to 2 large academic hospitals from 2000 to 2016. Risk factors were determined by review of electronic medical records. The primary outcomes of interest were all-cause and cardiovascular mortality.
Among 2097 consecutive young patients with myocardial infarction, 431 (20.5%) were ≤40 years of age. When compared with their older counterparts, very young patients had similar risk profiles, with the exception of greater substance abuse (17.9% vs 9.3%, P < .001) and less hypertension (37.9% vs 50.9%, P < .001). Spontaneous coronary artery dissection was more prevalent in very young patients (3.1% vs 1.1%, P = .003). Over a median follow-up of 11.2 years, very young myocardial infarction patients had a similar risk of all-cause and cardiovascular mortality.
Despite being, on average, 10 years younger and having a lower prevalence of hypertension, very young myocardial infarction patients had similar 1-year and long-term outcomes when compared with those aged 41 to 50 years at the time of their index infarction. Our findings suggest the need for aggressive secondary prevention measures in very young patients who experience a myocardial infarction.
Amyloidosis refers to a range of protein misfolding disorders that can cause organ dysfunction through progressive fibril deposition. Cardiac involvement often leads to significant morbidity and ...mortality and increasingly has been recognized as an important cause of heart failure. The two main forms of cardiac amyloidosis, light chain (AL) and transthyretin (ATTR) amyloidosis, have distinct mechanisms of pathogenesis. Recent insights have led to the development of novel pharmacotherapies with the potential to significantly impact each disease. This review will summarize the preclinical and clinical data for these emerging treatments for AL and ATTR amyloidosis.
Type 2 myocardial infarction (MI) and myocardial injury are associated with increased short-term mortality. However, data regarding long-term mortality are lacking.
This study compared long-term ...mortality among young adults with type 1 MI, type 2 MI, or myocardial injury.
Adults age 50 years or younger who presented with troponin >99th percentile or the International Classification of Diseases code for MI over a 17-year period were identified. All cases were adjudicated as type 1 MI, type 2 MI, or myocardial injury based on the Fourth Universal Definition of MI. Cox proportional hazards models were constructed for survival free from all-cause and cardiovascular death.
The cohort consisted of 3,829 patients (median age 44 years; 30% women); 55% had type 1 MI, 32% had type 2 MI, and 13% had myocardial injury. Over a median follow-up of 10.2 years, mortality was highest for myocardial injury (45.6%), followed by type 2 MI (34.2%) and type 1 MI (12%) (p < 0.001). In an adjusted model, type 2 MI was associated with higher all-cause (hazard ratio: 1.8; 95% confidence interval: 1.2 to 2.7; p = 0.004) and cardiovascular mortality (hazard ratio: 2.7; 95% confidence interval: 1.4 to 5.1; p = 0.003) compared with type 1 MI. Those with type 2 MI or myocardial injury were younger and had fewer cardiovascular risk factors but had more noncardiovascular comorbidities. They were significantly less likely to be prescribed cardiovascular medications at discharge.
Young patients who experience a type 2 MI have higher long-term all-cause and cardiovascular mortality than those who experience type 1 MI, with nearly one-half of patients with myocardial injury and more than one-third of patients with type 2 MI dying within 10 years. These findings emphasize the need to provide more aggressive secondary prevention for patients who experience type 2 MI and myocardial injury.
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Background Transthyretin cardiac amyloidosis (ATTR-CMP) is an increasingly recognized and treatable cause of heart failure with preserved ejection fraction. Multimodality cardiac imaging is ...recommended for ATTR-CMP diagnosis, but its cost-effectiveness in current clinical practice has not been well studied. Methods and Results Using a microsimulation model, we compared the cost-effectiveness of a combination of strategies involving
technetium pyrophosphate (PYP), cardiac magnetic resonance imaging, and endomyocardial biopsy for the diagnosis of ATTR-CMP. We developed a decision analytic model to project health care costs and lifetime quality-adjusted life years for symptomatic, older patients who present with congestive heart failure, with an increased left ventricular wall thickness and a 13% prevalence of ATTR-CMP. Rates of clinical events, costs, and quality-of-life values were estimated from published literature. The analysis was conducted from a US health care system perspective with health and cost outcomes discounted annually at 3%. In the base-case scenario, using a fixed tafamidis price of $16 000 annually (previously identified cost-effective price), total health care costs per person were lowest for the PYP-only strategy ($209 415) and highest for endomyocardial biopsy strategy ($215 881). Of the 7 strategies examined, the PYP-only strategy had the highest net monetary benefit using a willingness-to-pay threshold of $100 000/quality-adjusted life year. Results were sensitive to variations in model inputs for PYP and cardiac magnetic resonance imaging specificity, cost of tafamidis, and willingness-to-pay thresholds. Conclusions Our model-based analyses showed that a PYP-only strategy to diagnose ATTR-CMP is the most cost-effective strategy, at willingness-to-pay threshold of $100 000/quality-adjusted life year. At higher threshold ($150 000/quality-adjusted life year), sequential tests involving PYP and cardiac magnetic resonance imaging may be considered cost effective.
(1) reported results from the THAOS (Transthyretin Amyloid Outcome Survey) registry of transthyretin cardiac amyloid (ATTR) amyloidosis, in which they compared differences between patients carrying ...wild-type ATTR (wt-ATTR) cardiac amyloidosis and those carrying the mutant variant cardiomyopathy (Val122Ile) prevalent in African American patients and the most common form of mutant ATTR (mt-ATTR) in the United States.
Abstract Background Diabetes mellitus (DM) and Lp(a) are well-established predictors of coronary artery disease (CAD) outcomes. However, their combined association remains poorly understood. ...Objective To investigate the relationship between elevated Lp(a) and DM with CAD outcomes. Methods Retrospective analysis of the MGB Lp(a) Registry involving patients ≥ 18 years who underwent Lp(a) measurements between 2000 and 2019. Exclusion criteria were severe kidney dysfunction, malignant neoplasms, and prior atherosclerotic cardiovascular disease (ASCVD). The primary outcome was a combination of cardiovascular death or myocardial infarction (MI). Elevated Lp(a) was defined as > 90th percentile (≥ 216 nmol/L). Results Among 6,238 patients who met the eligibility criteria, the median age was 54, 45% were women, and 12% had DM. Patients with DM were older, more frequently male, and had a higher prevalence of additional cardiovascular risk factors. Over a median follow-up of 12.9 years, patients with either DM or elevated Lp(a) experienced higher rates of the primary outcome. Notably, those with elevated Lp(a) had a higher incidence of the primary outcome regardless of their DM status. The annual event rates were as follows: No-DM and Lp(a) < 90th% − 0.6%; No-DM and Lp(a) > 90th% − 1.3%; DM and Lp(a) < 90th% − 1.9%; DM and Lp(a) > 90th% − 4.7% ( p < 0.001). After adjusting for confounders, elevated Lp(a) remained independently associated with the primary outcome among both patients with DM (HR = 2.66 95%CI: 1.55–4.58, p < 0.001) and those without DM (HR = 2.01 95%CI: 1.48–2.74, p < 0.001). Conclusions Elevated Lp(a) constitutes an independent and incremental risk factor for CAD outcomes in patients with and without DM.
Lipoprotein (a) Lp(a) is a robust predictor of coronary heart disease outcomes, with targeted therapies currently under investigation. We aimed to evaluate the association of high Lp(a) with standard ...modifiable risk factors (SMuRFs) for incident first acute myocardial infarction (AMI).
This retrospective study used the Mass General Brigham Lp(a) Registry, which included patients aged ≥18 years with an Lp(a) measurement between 2000 and 2019. Exclusion criteria were severe kidney dysfunction, malignant neoplasm, and prior known atherosclerotic cardiovascular disease. Diabetes, dyslipidemia, hypertension, and smoking were considered SMuRFs. High Lp(a) was defined as >90th percentile, and low Lp(a) was defined as <50th percentile. The primary outcome was fatal or nonfatal AMI. A combination of natural language processing algorithms,
(
) codes, and laboratory data was used to identify the outcome and covariates. A total of 6238 patients met the eligibility criteria. The median age was 54 (interquartile range, 43-65) years, and 45% were women. Overall, 23.7% had no SMuRFs, and 17.8% had ≥3 SMuRFs. Over a median follow-up of 8.8 (interquartile range, 4.2-12.8) years, the incidence of AMI increased gradually, with higher number of SMuRFs among patients with high (log-rank
=0.031) and low Lp(a) (log-rank
<0.001). Across all SMuRF subgroups, the incidence of AMI was significantly higher for patients with high Lp(a) versus low Lp(a). The risk of high Lp(a) was similar to having 2 SMuRFs. Following adjustment for confounders and number of SMuRFs, high Lp(a) remained significantly associated with the primary outcome (hazard ratio, 2.9 95% CI, 2.0-4.3;
<0.001).
Among patients with no prior atherosclerotic cardiovascular disease, high Lp(a) is associated with significantly higher risk for first AMI regardless of the number of SMuRFs.
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