Acute Myocardial Infarction in Women: A Scientific Statement From the American Heart Association

Mental Stress-Induced-Myocardial Ischemia in Young Patients With Recent Myocardial Infarction: Sex Differences and Mechanisms

BACKGROUND

Mental stress-induced myocardial ischemia (MSIMI) is frequent in patients with coronary artery disease and is associated with worse prognosis. Young women with a previous myocardial infarction (MI), a group with unexplained higher mortality than men of comparable age, have shown elevated rates of MSIMI, but the mechanisms are unknown.

METHODS

We studied 306 patients (150 women and 156 men) ≤61 years of age who were hospitalized for MI in the previous 8 months and 112 community controls (58 women and 54 men) frequency matched for sex and age to the patients with MI. Endothelium-dependent flow-mediated dilation and microvascular reactivity (reactive hyperemia index) were measured at rest and 30 minutes after mental stress. The digital vasomotor response to mental stress was assessed using peripheral arterial tonometry. Patients received 99mTc-sestamibi myocardial perfusion imaging at rest, with mental (speech task) and conventional (exercise/pharmacological) stress.

RESULTS

The mean age of the sample was 50 years (range, 22-61). In the MI group but not among controls, women had a more adverse socioeconomic and psychosocial profile than men. There were no sex differences in cardiovascular risk factors, and among patients with MI, clinical severity tended to be lower in women. Women in both groups showed a higher peripheral arterial tonometry ratio during mental stress but a lower reactive hyperemia index after mental stress, indicating enhanced microvascular dysfunction after stress. There were no sex differences in flow-mediated dilation changes with mental stress. The rate of MSIMI was twice as high in women as in men (22% versus 11%, P=0.009), and ischemia with conventional stress was similarly elevated (31% versus 16%, P=0.002). Psychosocial and clinical risk factors did not explain sex differences in inducible ischemia. Although vascular responses to mental stress (peripheral arterial tonometry ratio and reactive hyperemia index) also did not explain sex differences in MSIMI, they were predictive of MSIMI in women only.

CONCLUSIONS

Young women after MI have a 2-fold likelihood of developing MSIMI compared with men and a similar increase in conventional stress ischemia. Microvascular dysfunction and peripheral vasoconstriction with mental stress are implicated in MSIMI among women but not among men, perhaps reflecting women's proclivity toward ischemia because of microcirculatory abnormalities.

Cardiovascular Disease and Breast Cancer: Where These Entities Intersect: A Scientific Statement From the American Heart Association

Cardiovascular disease (CVD) remains the leading cause of mortality in women, yet many people perceive breast cancer to be the number one threat to women's health. CVD and breast cancer have several overlapping risk factors, such as obesity and smoking. Additionally, current breast cancer treatments can have a negative impact on cardiovascular health (eg, left ventricular dysfunction, accelerated CVD), and for women with pre-existing CVD, this might influence cancer treatment decisions by both the patient and the provider. Improvements in early detection and treatment of breast cancer have led to an increasing number of breast cancer survivors who are at risk of long-term cardiac complications from cancer treatments. For older women, CVD poses a greater mortality threat than breast cancer itself. This is the first scientific statement from the American Heart Association on CVD and breast cancer. This document will provide a comprehensive overview of the prevalence of these diseases, shared risk factors, the cardiotoxic effects of therapy, and the prevention and treatment of CVD in breast cancer patients.

ECG-to-Decision Time Impact on 30-Day Mortality and Reperfusion Times for STEMI Care

OBJECTIVES

Little data are published on the unique care performance metric of electrocardiogram-to-decision time (E2Decide) for primary percutaneous coronary intervention (PCI) treatment of ST-elevation myocardial infarction (STEMI). The objective of this study is to evaluate E2Decide time on mortality and delayed reperfusion.

METHODS

This was a retrospective study of STEMI activations treated with primary PCI at 2 PCI-capable hospitals located in Duluth, Minnesota, and Fargo, North Dakota, originating in 3 different settings: (1) primary PCI-capable hospital emergency departments, (2) non-PCI facilities, and (3) in the field by emergency medical services. Analysis of variance, generalized linear modeling, and logistic regression models were used in this study.

RESULTS

There were 289 (96 females) STEMI patients included in our analyses. Non significant differences were observed in E2Decide time between male and female patients (9.7 vs. 11.1 min, respectively). Generalized linear modeling revealed that only non-PCI facilities significantly affected E2Decide time [β = 6.29; P = 0.007; 95% confidence interval (CI), 1.7-10.9] relative to PCI-capable hospitals. We found that E2Decide time was significantly associated with the metric decision-to-PCI, and that for every additional E2Decide minute, the decision-to-PCI increased by another 1.21 minutes (P < 0.001; 95% CI, 0.873-1.56). We also found a 20.3% increased odds of 30-day mortality for every 5-minute increase in E2Decide time (estimated odds ratio = 1.20; 95% CI, 1.04-1.38).

CONCLUSIONS

We observed that a delay in E2Decide time was significantly associated with a subsequent delay in decision-to-PCI time. E2Decide time was significantly associated with increased odds in 30-day mortality. This study demonstrates the potential value of the metric E2Decide time.

History of vasomotor symptoms, extent of coronary artery disease, and clinical outcomes after acute coronary syndrome in postmenopausal women

OBJECTIVE

Vasomotor symptoms (VMS) during menopausal transition have been linked to a higher burden of cardiovascular risk factors, subclinical vascular disease, and subsequent vascular events. We aim to investigate the association of VMS with the extent of coronary disease and their prognostic role after an acute coronary syndrome.

METHODS

The Ladies Acute Coronary Syndrome study enrolled consecutive women with an acute coronary syndrome undergoing coronary angiography. A menopause questionnaire was administered during admission. Angiographic data underwent corelab analysis. Six out of 10 enrolling centers participated in 1-year follow-up. Outcome data included the composite endpoint of all-cause mortality, recurrent myocardial infarction, stroke, and rehospitalization for cardiovascular causes within 1 year.

RESULTS

Of the 415 women with available angiographic corelab analysis, 373 (90%) had complete 1-year follow-up. Among them, 202 women had had VMS during menopausal transition. These women had the same mean age at menopause as those without VMS (50 years in both groups), but were younger at presentation (median age 71 vs 76 years; P < 0.001), despite a more favorable cardiovascular risk profile (chronic kidney dysfunction 4.5% vs 15.9%; P = 0.001; prior cerebrovascular disease 4.5 vs 12.2%; P = 0.018). Extent of coronary disease at angiography was similar between groups (mean Gensini score 49 vs 51; P = 0.6; mean SYNTAX score 14 vs 16; P = 0.3). Overall cardiovascular events at 1 year did not differ between groups (19% vs 22%; P = 0.5).

CONCLUSIONS

In postmenopausal women with an acute coronary syndrome, a history of VMS was associated with younger age at presentation, despite a lower vascular disease burden and similar angiographically defined coronary disease as compared with women without VMS. No difference could be found in terms of overall clinical outcomes. These results should be interpreted cautiously as all analyses were unadjusted and did not account for risk factor differences between women with and without a history of VMS.

Position matters: Validation of medicare hospital claims for myocardial infarction against medical record review in the atherosclerosis risk in communities study

PURPOSE

The objectives of this study were to investigate sensitivity and specificity of myocardial infarction (MI) case definitions using multiple discharge code positions and multiple diagnosis codes when comparing administrative data to hospital surveillance data.

METHODS

Hospital surveillance data for ARIC Study cohort participants with matching participant ID and service dates to Centers for Medicare and Medicaid Services (CMS) hospitalization records for hospitalizations occurring between 2001 and 2013 were included in this study. Classification of Definite or Probable MI from ARIC medical record review defined "gold standard" comparison for validation measures. In primary analyses, an MI was defined with ICD9 code 410 from CMS records. Secondary analyses defined MI using code 410 in combination with additional codes.

RESULTS

A total of 25 549 hospitalization records met study criteria. In primary analysis, specificity was at least 0.98 for all CMS definitions by discharge code position. Sensitivity ranged from 0.48 for primary position only to 0.63 when definition included any discharge code position. The sensitivity of definitions including codes 410 and 411.1 were higher than sensitivity observed when using code 410 alone. Specificity of these alternate definitions was higher for women (0.98) than for men (0.96).

CONCLUSION

Algorithms that rely exclusively on primary discharge code position will miss approximately 50% of all MI cases due to low sensitivity of this definition. We recommend defining MI by code 410 in any of first 5 discharge code positions overall and by codes 410 and 411.1 in any of first 3 positions for sensitivity analyses of women.

Spontaneous coronary artery dissection in women: What is known and what is yet to be understood

Spontaneous coronary artery dissection is a nonatherosclerotic etiology of acute coronary syndrome, including sudden cardiac death, which frequently affects younger women. This review highlights contemporary knowledge regarding spontaneous coronary artery dissection demographics, prevalence, diagnosis, presentation, and associated conditions and risks, inpatient treatment, major adverse clinical events, and outpatient management decisions.

Advances in Cardiovascular Health in Women over the Past Decade: Guideline Recommendations for Practice

Cardiovascular disease (CVD) remains the number one cause of death in women. It is estimated that 44 million women in the United States are either living with or at risk for heart disease. This article highlights the recent significant progress made in improving care, clinical decision-making, and policy implications for women with CVD. We provide our perspective supported by evidence-based advances in cardiovascular research and clinical care guidelines in seven areas: (1) primary CVD prevention and community heart care, (2) secondary prevention of CVD, (3) stroke, (4) heart failure and cardiomyopathies, (5) ischemia with nonobstructive coronary artery disease, (6) spontaneous coronary artery dissection, and (7) arrhythmias and device therapies. Advances in these fields have improved the lives of women living with and at risk for heart disease. With increase awareness, partnership with national organizations, sex-specific research, and changes in policy, the morbidity and mortality of CVD in women can be further reduced.

Sex-specific differences in hypertension and associated cardiovascular disease

Although intrinsic mechanisms that regulate arterial blood pressure (BP) are similar in men and women, marked variations exist at the molecular, cellular and tissue levels. These physiological disparities between the sexes likely contribute to differences in disease onset, susceptibility, prevalence and treatment responses. Key systems that are important in the development of hypertension and cardiovascular disease (CVD), including the sympathetic nervous system, the renin-angiotensin-aldosterone system and the immune system, are differentially activated in males and females. Biological age also contributes to sexual dimorphism, as premenopausal women experience a higher degree of cardioprotection than men of similar age. Furthermore, sex hormones such as oestrogen and testosterone as well as sex chromosome complement likely contribute to sex differences in BP and CVD. At the cellular level, differences in cell senescence pathways may contribute to increased longevity in women and may also limit organ damage caused by hypertension. In addition, many lifestyle and environmental factors - such as smoking, alcohol consumption and diet - may influence BP and CVD in a sex-specific manner. Evidence suggests that cardioprotection in women is lost under conditions of obesity and type 2 diabetes mellitus. Treatment strategies for hypertension and CVD that are tailored according to sex could lead to improved outcomes for affected patients.

A Report of the 24th Annual Congress on Women's Health-Workshop on Transforming Women's Health: From Research to Practice

Sex and gender are critical contributors to overall health and disease, and considering both in research informs the development of prevention strategies and treatment interventions for both men and women. The National Institutes of Health (NIH) Office of Research on Women's Health sponsored a preconference workshop on this topic at the 24th Annual Women's Health Congress, which was held in Crystal City, VA, in April 2016. The workshop featured presentations by NIH intramural and extramural scientists who presented data on a variety of topics including polycystic kidney disease, vaccine protection, depression, drug addiction, and cardiovascular disease. In this publication, we discuss the major points of each presentation and demonstrate the importance of considering sex and gender in biomedical research.

Sex-Based Differences in Discharge Disposition and Outcomes for ST-Segment Elevation Myocardial Infarction Patients Within a Regional Network

BACKGROUND

It is known that women with ST-segment elevation myocardial infarction (STEMI) have higher mortality in comparison to men. While the reasons for this sex-based difference are not completely understood, biologic differences and disparities in care have been implicated. Whether these differences persist within an urban, regional STEMI system of care with defined protocols is unclear. Our objective was to explore sex-related effects in outcomes in a large regional system of care.

MATERIALS AND METHODS

Data were drawn from a regional subset of the National Cardiovascular Data Registry for 33 hospitals in and around Dallas County, Texas from 2010 to 2015. We explored adjusted differences between women and men for discharge disposition, door to balloon (D2B), total ischemic time (TIS), length of stay, and in-hospital mortality rates.

RESULTS

Multivariate regressions to control for confounding factors, including age, D2B, and TIS, were significantly prolonged in women compared to men (D2B 58 vs. 54 minutes; TIS 206 vs. 178 minutes; both p < 0.001). Length of stay was 0.45 median days longer. Women were also much less likely to survive at discharge than men [odds ratio (OR): 0.63; 95% confidence interval (CI): 0.52-0.76]. Most notably, they were much less likely to be discharged to home than men (88% vs. 92%, p < 0.001).

CONCLUSIONS

In this study, we found that sex-based disparities persist for both cardiovascular outcomes and discharge disposition, even in a modern regionalized system of care.

The association between hope, marital status, depression and persistent pain in men and women following cardiac surgery

Background

Cardiac surgery is a major life event, and outcomes after surgery are associated with men’s and women’s ability to self-manage and cope with their cardiac condition in everyday life. Hope is suggested to impact cardiac health by having a positive effect on how adults cope with and adapt to illness and recommended lifestyle changes.

Methods

We did a secondary analysis of 416 individuals (23% women) undergoing elective coronary artery bypass graft and/or valve surgery between March 2012 and September 2013 enrolled in randomized controlled trial. Hope was assessed using The Herth Hope Index (HHI) at three, six and 12 months following cardiac surgery. Linear mixed model analyses were performed to explore associations after cardiac surgery between hope, marital status, depression, persistent pain, and surgical procedure.

Results

For the total sample, no statistically significant difference between global hope scores from 3 to 12 months was observed (ranging from 38.3 ± 5.1 at 3 months to 38.7 ± 5.1 at 12 months), and no differences between men and women were observed at any time points. However, 3 out of 12 individual items on the HHI were associated with significantly lower scores in women: #1) I have a positive outlook toward life, #3) I feel all alone, and #6) I feel scared about my future. Over the study period, diminished hope was associated with older age, lower education, depression prior to surgery, and persistent pain at all measurement points. Isolated valve surgery was positively associated with hope. While neither sex nor marital status, as main effects, demonstrated significant associations with hope, women who were divorced/widowed/single were significantly more likely to have lower hope scores over the study period.

Conclusion

Addressing pain and depression, and promoting hope, particularly for women living alone may be important targets for interventions to improve outcomes following cardiac surgery.

Trial registration

Clinical Trials gov Identifier: NCT01976403. Date of registration: November 28, 2011.

The Heart as a Psychoneuroendocrine and Immunoregulatory Organ

The heart can be viewed not just as muscle pump but also as an important checkpoint for a complex network of nervous, endocrine, and immune signals. The heart is able to process neurological signals independently from the brain and to crosstalk with the endocrine and immune systems. The heart communicates with the psyche through the neuro-endocrine-immune system in a highly integrated way, in order to maintain the homeostasis of the whole body with peculiarities specific to males and females.

Postpartum Sudden Cardiac Death After Spontaneous Coronary Artery Dissection in a Patient With Fibromuscular Dysplasia

Spontaneous coronary artery dissection (SCAD) is a rare entity that can cause acute myocardial infarction and sudden cardiac death (SCD) which often goes unrecognized. We report a case of SCAD in a young postpartum female who presented with sudden cardiac arrest. The patient was managed medically and found to have fibromuscular dysplasia (FMD). After being stabilized in the critical care unit, coronary angiography was performed which showed dissection of the left main artery, intramural hematoma, and the culprit lesion. Further investigation showed dissection of the left vertebral artery which was all consistent with a diagnosis of FMD. The patient was followed as an outpatient and a repeated coronary angiography demonstrated healed dissection site. In conclusion, this case exemplifies that prompt diagnosis along with medical management without the need of coronary artery bypass graft, and percutaneous coronary intervention can improve survival in SCAD.

Childhood and Adolescent Adversity and Cardiometabolic Outcomes: A Scientific Statement From the American Heart Association

Adverse experiences in childhood and adolescence, defined as subjectively perceived threats to the safety or security of the child's bodily integrity, family, or social structures, are known to be associated with cardiometabolic outcomes over the life course into adulthood. This American Heart Association scientific statement reviews the scientific literature on the influence of childhood adversity on cardiometabolic outcomes that constitute the greatest public health burden in the United States, including obesity, hypertension, type 2 diabetes mellitus, and cardiovascular disease. This statement also conceptually outlines pathways linking adversity to cardiometabolic health, identifies evidence gaps, and provides suggestions for future research to inform practice and policy. We note that, despite a lack of objective agreement on what subjectively qualifies as exposure to childhood adversity and a dearth of prospective studies, substantial evidence documents an association between childhood adversity and cardiometabolic outcomes across the life course. Future studies that focus on mechanisms, resiliency, and vulnerability factors would further strengthen the evidence and provide much-needed information on targets for effective interventions. Given that childhood adversities affect cardiometabolic health and multiple health domains across the life course, interventions that ameliorate these initial upstream exposures may be more appropriate than interventions remediating downstream cardiovascular disease risk factor effects later in life.

Culprit plaque characteristics in women vs men with a first ST-segment elevation myocardial infarction: In vivo optical coherence tomography insights

BACKGROUND

It is unclear whether more severe coronary atherosclerosis is a prerequisite to an initial acute coronary event in women vs men.

HYPOTHESIS

Women may have more severe coronary atherosclerosis than men in patients with acute coronary event.

METHODS

We used intravascular optical coherence tomography (OCT) to evaluate gender differences in culprit-plaque morphology in patients with a first ST-segment elevation myocardial infarction (STEMI).We retrospectively enrolled 211 consecutive patients who experienced a first STEMI and underwent an OCT examination of their infarct-related artery before primary percutaneous coronary intervention.

RESULTS

Of the 211 patients enrolled, 162 (76.7%) were men and 49 (23.2%) were women. The women were significantly older than the men (mean age, 60.2 ± 8.2 vs 55.7 ± 11.2 years; P = 0.01) and less likely to be current smokers (P = 0.02). Moreover, the delay from symptom onset to reperfusion was longer in women than in men (7.6 ± 6.1 vs 5.5 ± 4.4 hours; P = 0.01). The OCT data indicated that there were no gender differences in culprit-plaque morphology, including lipid length, lipid arc, minimum fibrous cap thickness, or minimum lumen area. Additionally, no gender differences were found in the prevalence of plaque rupture, thin-cap fibroatheroma, residual thrombus, microvessels, macrophages, cholesterol crystals, or calcification.

CONCLUSIONS

Among patients presenting with a first STEMI, there were no differences in culprit plaque features between women and men.

Comparison of Delay Times Between Symptom Onset of an Acute ST-elevation Myocardial Infarction and Hospital Arrival in Men and Women <65 Years Versus ≥65 Years of Age.: Findings From the Multicenter Munich Examination of Delay in Patients Experiencing Acute Myocardial Infarction (MEDEA) Study

Early administration of reperfusion therapy in acute ST-elevation myocardial infarctions (STEMI) is crucial to reduce mortality. Although female sex and old age are key factors contributing to an inadequate long prehospital delay time, little is known whether women ≥65 years are a particular risk population. Hence, we studied the interaction of sex and age (<65 years or ≥65 years) and the contribution of chest pain to delay time during STEMI. Bedside interview data were collected in 619 STEMI patients from the Munich Examination of Delay in Patients Experiencing Acute Myocardial Infarction (MEDEA) study. Sex and age group stratification disclosed an excess delay risk for women ≥65 years, accounting for a 2.39 (95% confidence interval (CI) 1.39 to 4.10)-fold higher odds to delay longer than 2 hours compared with all other patient groups including younger women (p ≤0.002). Median delay time was 266 minutes in women ≥65 years and 148 minutes in younger women (p <0.001). Chest pain during STEMI had the lowest frequency both in women (81%) and men ≥65 years (83%) and the highest frequency (95%) in younger women. Experiencing non-chest pain was 2.32-fold (95% CI, 1.20 to 4.46, p <0.05) higher in women ≥65 years than in all other patients. Mediation analysis disclosed that the effect accounted for only 9% of the variance. Age specific educational strategies targeting women ≥65 years at risk are urgently needed. To tailor adequate strategies, more research is required to understand age- and sex driven barriers to timely identification of ischemic symptoms.

Defining Quality in Cardiovascular Imaging: A Scientific Statement From the American Heart Association

The aims of the current statement are to refine the definition of quality in cardiovascular imaging and to propose novel methodological approaches to inform the demonstration of quality in imaging in future clinical trials and registries. We propose defining quality in cardiovascular imaging using an analytical framework put forth by the Institute of Medicine whereby quality was defined as testing being safe, effective, patient-centered, timely, equitable, and efficient. The implications of each of these components of quality health care are as essential for cardiovascular imaging as they are for other areas within health care. Our proposed statement may serve as the foundation for integrating these quality indicators into establishing designations of quality laboratory practices and developing standards for value-based payment reform for imaging services. We also include recommendations for future clinical research to fulfill quality aims within cardiovascular imaging, including clinical hypotheses of improving patient outcomes, the importance of health status as an end point, and deferred testing options. Future research should evolve to define novel methods optimized for the role of cardiovascular imaging for detecting disease and guiding treatment and to demonstrate the role of cardiovascular imaging in facilitating healthcare quality.

Age and gender differences in medical adherence after myocardial infarction: Women do not receive optimal treatment – The Netherlands claims database

Background

Following myocardial infarction, medication is, besides lifestyle interventions, the cornerstone treatment to improve survival and minimize the occurrence of new cardiovascular events. Still, data on nationwide medication adherence are scarce. This study assesses medical adherence during one year following myocardial infarction, stratifying per type of infarct, age and gender.

Design

Retrospective cohort study.

Methods

In The Netherlands, all inhabitants are by law obliged to have health insurance and all claims data are centrally registered. In 2012 and 2013, all national diagnosis-codings of ST-segment elevation myocardial infarction (STEMI) and non-ST-segment elevation myocardial infarction (NSTEMI) were acquired. Furthermore, information on retrieved medication was extracted from the Dutch Pharmacy Information System. Twelve months after discharge, the retrieved medication at the pharmacy of each pharmacological therapy (aspirin-species, P2Y12-inhibitor, statin, beta-blocker, angiotensin-converting enzyme-/angiotensin 2-inhibitor, vitamin-K antagonists or novel oral anticoagulant) were analysed.

Results

In total, 59,534 patients (67 ± 13 years, 39,545 (66%) male, 57% NSTEMI) were included, of whom 52,672 (88%) patients were analysed for one-year medical adherence. STEMI patients more often achieved optimal medical adherence than NSTEMI patients (60% vs. 40%, p ≤ 0.001). In both STEMI and NSTEMI, use of all five indicated drugs was higher in male patients compared with female (STEMI male 61% vs. female 57%, p ≤ 0.001; NSTEMI male 43% vs. female 37%, p ≤ 0.001. With increasing age, a gradual decrease was observed in the use of aspirin, P2Y12-inhibitors and statins.

Conclusion

Age and gender differences existed in medical adherence after myocardial infarction. Medical adherence was lower in women, young patients and elderly patients, specifically in NSTEMI patients.

Efficacy and Safety of Adding Ezetimibe to Statin Therapy Among Women and Men: Insight From IMPROVE-IT (Improved Reduction of Outcomes: Vytorin Efficacy International Trial)

BACKGROUND

IMPROVE-IT (Improved Reduction of Outcomes: Vytorin Efficacy International Trial) showed that adding the nonstatin ezetimibe to statin therapy further reduced cardiovascular events in patients after an acute coronary syndrome. In a prespecified analysis, we explore results stratified by sex.

METHODS AND RESULTS

In IMPROVE-IT, patients with acute coronary syndrome and low-density lipoprotein cholesterol of 50 to 125 mg/dL were randomized to placebo/simvastatin 40 mg or ezetimibe/simvastatin 10/40 mg. They were followed up for a median of 6 years for the primary composite of cardiovascular death, myocardial infarction, hospitalization for unstable angina, coronary revascularization ≥30 days, and stroke. Among 18 144 patients in IMPROVE-IT, 4416 (24%) were women. At 12 months, the addition of ezetimibe to simvastatin significantly reduced low-density lipoprotein cholesterol from baseline compared with simvastatin monotherapy in men and women equally (absolute reduction, 16.7 mg/dL in men and 16.4 mg/dL in women). Women receiving ezetimibe/simvastatin had a 12% risk reduction over those receiving placebo/simvastatin for the primary composite end point (hazard ratio, 0.88; 95% confidence interval, 0.79-0.99) compared with a 5% reduction for men (hazard ratio, 0.95; 95% confidence interval, 0.90-1.01; P=0.26 for interaction). When the total number of primary events was considered, women had an 18% reduction with the addition of ezetimibe (relative risk, 95% confidence interval, 0.81; 0.71-0.94) and men had a 6% reduction (relative risk, 0.94; 95% confidence interval, 0.87-1.02; P=0.08 for interaction). The addition of ezetimibe did not increase the rates of safety events in either women or men.

CONCLUSIONS

IMPROVE-IT demonstrated that the benefit of adding ezetimibe to statin is present in both women and men, with a good safety profile supporting the use of intensive, combination, lipid-lowering therapy to optimize cardiovascular outcomes.

CLINICAL TRIAL REGISTRATION

URL: http://www.clinicaltrials.gov. Unique identifier: NCT00202878.

Comparison of Readmission Rates After Acute Myocardial Infarction in 3 Patient Age Groups (18 to 44, 45 to 64, and ≥65 Years) in the United States

Postacute myocardial infarction (AMI) readmissions are common among Medicare beneficiaries (≥65 years) and are associated with significant resource utilization. However, patterns of AMI readmissions for younger age groups in the United States are not known. In the Nationwide Readmissions Database, a nationally representative all-payer database of inpatient hospitalizations, we identified 212,171 index AMI hospitalizations in January to November 2013, weighted to represent 478,247 hospitalizations nationally (mean age 66.9 years, 38% women, 29% low income). This included 26,516 cases in the 18 to 44 age group, 183,703 in the 45 to 64 age group, and 268,027 in the ≥65 age group. The overall 30-day readmission rate was 14.5% and varied across age groups (9.7% [18 to 44], 11.2% [45 to 64], and 17.3% [≥65]). The cumulative cost of 30-day readmissions was $1.1 billion, of which $365 million was spent on those <65 years of age. In multivariable hierarchical models, the risk of readmission was higher in women and in low-income patients, but the effect varied by age (p value for age-gender and age-income interactions <0.05) and was more prominent in the younger age groups. Further, patients in all age groups continue to have a high hospitalization burden beyond the typical 30-day readmission period, with an overall 24% post-AMI 90-day readmission rate. In conclusion, readmissions in young and middle-aged AMI survivors pose a substantial burden on patients and on U.S. health-care resources. Women and low-income patients with AMI, particularly those in younger age groups, are more frequently readmitted, and readmissions continue to burden the health-care system beyond the typical 30-day window. Future investigations would need to be targeted toward a better understanding and improvement of the rehospitalization burden for vulnerable patient groups.

Gender differences in the decrease of in-hospital mortality in patients with acute myocardial infarction during the last 20 years in Switzerland

Objective

To assess temporal trends of in-hospital mortality in patients with acute myocardial infarction (AMI) enrolled in the Swiss nationwide registry (AMIS Plus) over the last 20 years with regard to gender, age and in-hospital treatment.

Methods

All patients with AMI from 1997 to 2016 were stratified according to ST-segment elevation myocardial infarction (STEMI) or non-STEMI (NSTEMI), and gender using logistic regression analyses.

Results

Among 51 725 patients, 30 398 (59%) had STEMI and 21 327 (41%) had NSTEMI; 73% were men (63.9±12.8 years) and 27% were women (71.7±12.5 years). Over 20 years, crude in-hospital STEMI mortality decreased from 9.8% to 5.5% in men and from 18.3% to 6.9% in women. In patients with NSTEMI, it decreased from 7.1% to 2.1% in men and from 11.0% to 3.6% in women. After adjustment for age, mortality decreased per additional admission year by 3% in men with STEMI (OR 0.97, 95% CI 0.96 to 0.98, P<0.001), by 5% in women with STEMI (OR 0.95, 95% CI 0.93 to 0.96, P<0.001), by 6% in men with NSTEMI (OR 0.94, 95% CI 0.93 to 0.96, P<0.001) and by 5% in women with NSTEMI (OR 0.95, 95% CI 0.93 to 0.97, P<0.001). In patients <60 years, a decrease in mortality was seen in women with STEMI (OR 0.94, 95% CI 0.90 to 0.99, P=0.025) and NSTEMI (OR 0.87, 95% CI 0.80 to 0.94, P<0.001) but not in men with STEMI (OR 1.01, 95% CI 0.98 to 1.04, P=0.46) and NSTEMI (OR 0.98, 95% CI 0.94 to 1.03, P=0.41). The mortality decrease in patients with AMI was closely associated with the increase in reperfusion therapy.

Conclusion

From 1997 to 2016, in-hospital mortality of patients with AMI in Switzerland has halved and was more pronounced in women, particularly in the age category <60 years.

Trial registration number

NCT01305785; Results.

Pregnancy and the Risk of Spontaneous Coronary Artery Dissection: An Analysis of 120 Contemporary Cases

BACKGROUND

Because of the rarity of this condition, information on pregnancy-associated spontaneous coronary artery dissection is limited. We reviewed a large number of contemporary pregnancy-associated spontaneous coronary artery dissection cases in an attempt to define the clinical characteristics and provide management recommendations.

METHODS AND RESULTS

A literature search for cases of pregnancy-associated spontaneous coronary artery dissection reported between 2000 and 2015 included 120 cases; 75% presented with ST-segment-elevation myocardial infarction, and 80% had anterior myocardial infarction. Left anterior descending coronary artery was involved in 72% of cases, left main segment in 36%, and 40% had multivessel spontaneous coronary artery dissection. Ejection fraction was reduced to <40% in 44% of cases. Percutaneous coronary intervention was successful in only 50% of cases. Coronary artery bypass surgery was performed in 44 cases because of complex anatomy, hemodynamic instability, or failed percutaneous coronary intervention. Maternal complications included cardiogenic shock (24%), mechanical support (28%), urgent percutaneous coronary intervention (28%), urgent coronary artery bypass surgery (27.5%), maternal mortality (4%), and fetal mortality (2.5%). During follow-up for 305±111 days, there was a high incidence of symptoms because of persistent or new spontaneous coronary artery dissections, and 5 women needed heart transplantation or ventricular assist device implantation.

CONCLUSIONS

Pregnancy-associated spontaneous coronary artery dissection is commonly associated with left anterior descending, left main, and multivessel involvement, which leads to a high incidence of reduced ejection fraction, and life-threatening maternal and fetal complications. Percutaneous coronary intervention is associated with low success rate and high likelihood of complications, and coronary artery bypass surgery is often required. Recurrent ischemic events because of persistent or new spontaneous coronary artery dissection are common during long-term follow-up.

An integrative review of fatigue experienced by women before and during myocardial infarction

AIMS AND OBJECTIVES

To explore the extant literature for key features of prodromal and acute myocardial infarction fatigue experienced by women, including estimates of severity, narrative descriptors, impacts on activities of daily living and frequency, and to describe what is known from the current evidence base.

BACKGROUND

Several studies, conducted across the globe, have investigated prodromal and acute myocardial infarction symptoms experienced by women and suggested that fatigue is prevalent, and they have also sporadically described specific characteristics of fatigue, such as narrative descriptors and severity. However, no review specific to this acute and prodromal fatigue could be located in the literature.

DESIGN

Integrative review, guided by Whittemore and Knafl's approach and the Theory of Unpleasant Symptoms.

METHODS

We used a comprehensive, systematic approach to searching, screening, selecting, evaluating and analysing the records. Data were collected in February 2017.

RESULTS

Twenty-one articles were included in the review, including nine quantitative, six qualitative and six mixed-methods studies, with the majority (14) published in the USA. The average age of participants across the studies was the early 60s. Distress, quality, intensity and timing of prodromal myocardial infarction fatigue were more completely described in the literature than acute myocardial infarction fatigue.

CONCLUSIONS

Fatigue is the most common prodromal myocardial infarction symptom experienced by women and is also a common acute symptom. Additional research exploring prodromal and acute myocardial infarction fatigue is necessary.

RELEVANCE TO CLINICAL PRACTICE

As healthcare professionals work with women across the healthcare spectrum, recognising fatigue as an important potential myocardial infarction symptom is essential. Not only can women be educated about this symptom and other possible myocardial infarction symptoms, but clinicians can consider fatigue as an important symptom in a constellation of factors when evaluating women's health and the potential for coronary disease and myocardial infarction.

Sex as a Biological Variable in Emergency Medicine Research and Clinical Practice: A Brief Narrative Review

The National Institutes of Health recently highlighted the significant role of sex as a biological variable (SABV) in research design, outcome and reproducibility, mandating that this variable be accounted for in all its funded research studies. This move has resulted in a rapidly increasing body of literature on SABV with important implications for changing the clinical practice of emergency medicine (EM). Translation of this new knowledge to the bedside requires an understanding of how sex-based research will ultimately impact patient care. We use three case-based scenarios in acute myocardial infarction, acute ischemic stroke and important considerations in pharmacologic therapy administration to highlight available data on SABV in evidence-based research to provide the EM community with an important foundation for future integration of patient sex in the delivery of emergency care as gaps in research are filled.

Sleep Characteristics and Carotid Atherosclerosis Among Midlife Women

Introduction

Midlife, which encompasses the menopause transition in women, can be a time of disrupted sleep and accelerated atherosclerosis accumulation. Short or poor sleep quality has been associated with cardiovascular disease (CVD) risk; few studies have investigated relations among midlife women. We tested whether shorter actigraphy sleep time or poorer subjective sleep quality was associated with carotid atherosclerosis among midlife women.

Aims and Methods

Two hundred fifty-six peri- and postmenopausal women aged 40-60 years completed 3 days of wrist actigraphy, hot flash monitoring, questionnaires (Pittsburgh Sleep Quality Index [PSQI], Berlin), a blood draw, and carotid ultrasound [intima media thickness (IMT), plaque]. Associations of objective (actigraphy) and subjective (PSQI) sleep with IMT/plaque were tested in regression models (covariates: age, race, education, body mass index, blood pressure, lipids, insulin resistance, medications, snoring, depressive symptoms, sleep hot flashes, and estradiol).

Results

Shorter objective sleep time was associated with higher odds of carotid plaque (for each hour shorter sleep, plaque score ≥ 2, odds ratio (OR) [95% confidence interval, CI] = 1.58 [1.11-2.27], p = .01; plaque score = 1, OR [95% CI] = 0.95 [0.68-1.32], p = .75, vs. no plaque, multivariable). Poorer subjective sleep quality was associated with higher mean IMT [β, b (standard error, SE) = 0.004 (0.002), p = .03], maximal IMT [b (SE) = 0.009 (0.003), p = .005], and plaque [plaque score ≥ 2, OR (95% CI) = 1.23 (1.09-1.40), p = .001; score = 1, OR (95% CI) = 1.06 (0.93-1.21), p = .37, vs. no plaque] in multivariable models. Findings persisted additionally adjusting for sleep hot flashes and estradiol.

Conclusions

Shorter actigraphy-assessed sleep time and poorer subjective sleep quality were associated with increased carotid atherosclerosis among midlife women. Associations persisted adjusting for CVD risk factors, hot flashes, and estradiol.

Sex and gender differences in hypertensive kidney injury

Hypertension is a complex, multifaceted disorder, affecting ~1 in 3 adults in the United States. Although hypertension occurs in both men and women, there are distinct sex differences in the way in which they develop hypertension, with women having a lower incidence of hypertension until the sixth decade of life. Despite observed sex differences in hypertension, little is known about the molecular mechanisms underlying the development of hypertension in females, primarily because of their underrepresentation in both clinical and experimental animal studies. The first goal of this review is to provide a concise overview of the participation of women in clinical trials, including a discussion of the importance of including females in basic science research, as recently mandated by the National Institutes of Health. The remaining portion of the review is dedicated to identifying clinical and experimental animal studies that concentrate on gender and sex differences in hypertensive kidney disease, ending with a proposed role for T cells in mediating sex differences in blood pressure.

Assessing Years of Life Lost Versus Number of Deaths in the United States, 1995-2015

OBJECTIVES

To assess years of life lost to each cause of death in the United States between 1995 and 2015, and compare it with the number of deaths.

METHODS

We used Vital Statistics mortality data and defined "life-years lost" as remaining life expectancy for each decedent's age, sex, and race. We calculated the share of life-years lost to each cause of death in each year, and examined reasons for changes.

RESULTS

In 2015, heart disease caused the most deaths, but cancer caused 23% more life-years lost. Life-years lost to heart disease declined 6% since 1995, whereas life-years lost to cancer increased 16%. The increase for cancer was entirely attributable to population growth and longer life expectancy; had these factors remained constant, life-years lost to heart disease and cancer would have fallen 56% and 38%, respectively. Accidents (including overdoses), suicides, and homicides each caused twice the share of life-years lost as deaths. Measuring life-years lost highlighted racial disparities in heart disease, homicides, and perinatal conditions.

CONCLUSIONS

Life-years lost may provide additional context for understanding long-term mortality trends.

Sex Differences in Clinical Characteristics, Psychosocial Factors, and Outcomes Among Patients With Stable Coronary Heart Disease: Insights from the STABILITY (Stabilization of Atherosclerotic Plaque by Initiation of Darapladib Therapy) Trial

Background

Greater understanding of differences between men and women with coronary heart disease is needed.

Methods and Results

In this post hoc analysis of the STABILITY (Stabilization of Atherosclerotic Plaque by Initiation of Darapladib Therapy) trial, we described psychosocial factors, treatments, and outcomes of men versus women with stable coronary heart disease and explored the association of sex with psychosocial characteristics and cardiovascular risk. Cox proportional hazards models were used to assess the relationship between sex and outcomes. Interactions among sex, psychosocial factors, and the composite of cardiovascular death, nonfatal myocardial infarction, and nonfatal stroke were tested. Of 15 828 patients, 2967 (19%) were women. Among women, 21.2% felt often or always stressed at home (versus 9.8% of men), and 19.2% felt often or always sad or depressed (versus 10.1% of men; all P<0.0001). The median duration of follow‐up was 3.7 years (25th–75th percentiles: 3.5–3.8 years). Use of evidence‐based medications for coronary heart disease at baseline and 24 months was similar between sexes, as were event rates for all outcomes analyzed. In the multivariable model including psychosocial measures, female sex was associated with lower cardiovascular risk. There was a statistically significant interaction (P=0.03) such that the lower risk in women varied by depressive symptom frequency, whereby women who were more depressed had a risk similar to men.

Conclusions

Female sex was independently associated with better long‐term clinical outcomes, although this was modified by frequency of depressive symptoms. This suggests that emotional state may be an important target for improving outcomes in patients with coronary heart disease, specifically in women.

Clinical Trial Registration

STABILITY ClinicalTrials.gov number (NCT00799903).

Characteristics and Health Care Preferences Associated with Cardiovascular Disease Risk among Women Veterans

BACKGROUND

Women veterans are at increased risk for cardiovascular disease (CVD), but little is known about comorbidities and healthcare preferences associated with CVD risk in this population.

METHODS

We describe the prevalence of CVD-relevant health behaviors, mental health symptoms, and health care use characteristics and preferences among participants of the National Survey of Women Veterans (conducted 2008-2009).

FINDINGS

Fifty-four percent of respondents were at risk for CVD (defined as a diagnosis of hypertension, diabetes, current tobacco use, or obesity without CVD). In unadjusted analysis, ORs for being at risk for CVD were greater among those interested in gender-specific clinical settings (OR, 2.0; 95% CI, 1.2-3.4) and gender-specific weight loss programs (OR, 1.8; 95% CI, 1.1-2.9). ORs were also greater for women who were physically inactive (OR, 1.9; 95% CI, 1.1-3.3), with current symptoms of depression (OR, 2.5; 95% CI, 1.1-6.1), anxiety (OR, 2.1; 95% CI, 1.2-3.6), and posttraumatic stress disorder (OR, 2.4; 95% CI, 1.2-4.8). Adjusting for age, race/ethnicity, marital status, education level, employment, and source of health care use, the ORs for CVD risk were higher for women with current posttraumatic stress disorder symptoms (2.5; 95% CI, 1.1-5.3) and gender-specific health care preferences (2.0; 95% CI, 1.1-3.4), and gender-specific weight loss programs (1.9; 95% CI, 1.1-3.2).

CONCLUSIONS

Risk for CVD was common and preferences for gender-specific care and posttraumatic stress disorder were associated with being at risk for CVD. Women's health clinics may be a good location for targeted CVD prevention interventions for women veterans both in and outside the Veterans Health Administration.

Gender differences in risk profile and outcome of Middle Eastern patients undergoing percutaneous coronary intervention

Objectives:

To determine the gender differences in cardiovascular risk profile and outcomes among patients undergoing percutaneous coronary intervention (PCI).

Methods:

In a prospective multicenter study of consecutive Middle Eastern patients managed with PCI from January 2013 to February 2014 in 12 tertiary care centers in Amman and Irbid, Jordan. Clinical and coronary angiographic features, and major cardiovascular events were assessed for both genders from hospital stay to 1 year.

Results:

Women comprised 20.6% of 2426 enrolled patients, were older (mean age 62.9 years versus 57.2 years), had higher prevalence of hypertension (81% versus 57%), diabetes (66% versus 44%), dyslipidemia (58% versus 46%), and obesity (44% versus 25%) compared with men, p<0.001. The PCI for ST-segment elevation myocardial infarction was indicated for fewer women than men (23% versus 33%; p=0.001). Prevalence of single or multi-vessel coronary artery disease was similar in women and men. More women than men had major bleeding during hospitalization (2.2% versus 0.6%; p=0.003) and at one year (2.5% versus 0.9%; p=0.007). There were no significant differences between women and men in mortality (3.1% versus 1.7%) or stent thrombosis (2.1% versus 1.8%) at 1 year.

Conclusion:

Middle Eastern women undergoing PCI had worse baseline risk profile compared with men. Except for major bleeding, no gender differences in the incidence of major adverse cardiovascular events were demonstrated.

Quality and Equitable Health Care Gaps for Women: Attributions to Sex Differences in Cardiovascular Medicine

The present review synthesizes evidence and discusses issues related to health care quality and equity for women, including minority population subgroups. The principle of "sameness" or women and men receiving equitable, high-quality care is a near-term target, but optimal population health cannot be achieved without consideration of the unique, gendered structural determinants of health and the development of unique care pathways optimized for women. The aim of this review is to promote enhanced awareness, develop critical thinking in sex and gender science, and identify strategic pathways to improve the cardiovascular health of women. Delineation of the components of high-quality health care, including a women-specific research agenda, remains a vital part of strategic planning to improve the lives of women at risk for or living with cardiovascular disease.

Sex-based differences in quality of care and outcomes in a health system using a standardized STEMI protocol

BACKGROUND

Recent data from the National Cardiovascular Data Registry indicate that women with ST-segment-elevation myocardial infarction (STEMI) continue to have higher mortality and reported delays in treatment compared with men. We aimed to determine whether the sex difference in mortality exists when treatment disparities are reduced.

METHODS

Using a prospective regional percutaneous coronary intervention (PCI)-based STEMI system database with a standardized STEMI protocol, we evaluated baseline characteristics, treatment, and clinical outcomes of STEMI patients stratified by sex.

RESULTS

From March 2003 to January 2016, 4,918 consecutive STEMI patients presented to the Minneapolis Heart Institute at Abbott Northwestern Hospital regional STEMI system including 1,416 (28.8%) women. Compared with men, women were older (68.4 vs 60.9 years) with higher rates of hypertension (66.7% vs 55.7%), diabetes (21.7% vs 17.4%), and cardiogenic shock (11.5% vs 8.0%) (all P < .001). Pre-revascularization medications and PCI were performed with same frequencies, but women were less likely to receive statin or antiplatelet therapy at discharge. After age adjustment, women had similar in-hospital mortality to men (5.1% vs 4.8%, P = .60) despite slightly longer door-to-balloon time (95 vs 92 minutes, P = .004). Five-year follow-up confirmed absence of a sex disparity in age-adjusted survival post-STEMI.

CONCLUSIONS

Previously reported treatment disparities between men and women are diminished in a regional PCI-based STEMI system using a standardized STEMI protocol. No sex differences in short-term or long-term age-adjusted mortality are present in this registry despite some treatment disparities. These results suggest that STEMI health care disparities and mortality in women can be improved using STEMI protocols and systems.

Reporting of sex and gender in randomized controlled trials in Canada: a cross-sectional methods study

BACKGROUND

Accurate reporting on sex and gender in health research is integral to ensuring that health interventions are safe and effective. In Canada and internationally, governments, research organizations, journal editors, and health agencies have called for more inclusive research, provision of sex-disaggregated data, and the integration of sex and gender analysis throughout the research process. Sex and gender analysis is generally defined as an approach for considering how and why different subpopulations (e.g., of diverse genders, ages, and social locations) may experience health conditions and interventions in different or similar ways.The objective of this study was to assess the extent and nature of reporting about sex and/or gender, including whether sex and gender analysis (SGA) was carried out in a sample of Canadian randomized controlled trials (RCTs) with human participants.

METHODS

We searched MEDLINE from 01 January 2013 to 23 July 2014 using a validated filter for identification of RCTs, combined with terms related to Canada. Two reviewers screened the search results to identify the first 100 RCTs that were either identified in the trial publication as funded by a Canadian organization or which had a first or last author based in Canada. Data were independently extracted by two people from 10% of the RCTs during an initial training period; once agreement was reached on this sample, the remainder of the data extraction was completed by one person and verified by a second.

RESULTS

The search yielded 1433 records. We screened 256 records to identify 100 RCTs which met our eligibility criteria. The median sample size of the RCTs was 107 participants (range 12-6085). While 98% of studies described the demographic composition of their participants by sex, only 6% conducted a subgroup analysis across sex and 4% reported sex-disaggregated data. No article defined "sex" and/or "gender." No publication carried out a comprehensive sex and gender analysis.

CONCLUSIONS

Findings highlight poor uptake of sex and gender considerations in the Canadian RCT context and underscore the need for better articulated guidance on sex and gender analysis to improve reporting of evidence, inform policy development, and guide future research.

Gender differences in coronary angiography, subsequent interventions, and outcomes among patients with acute coronary syndromes

BACKGROUND

The objective was to investigate whether gender disparities are found in referrals of patients with acute coronary syndromes to percutaneous coronary interventions (PCIs) or coronary artery bypass grafting (CABG) and, furthermore, to study gender differences in complications and mortality.

METHODS

All consecutive coronary angiographies (CAs) and PCIs performed in Sweden and Iceland are prospectively registered in the Swedish Coronary Angiography and Angioplasty Registry. For the present analysis, data of patients with acute coronary syndromes, enrolled in 2007-2011, were used to analyze gender differences in revascularization, in-hospital complications, and 30-day mortality.

RESULTS

A total of 106,881 CAs were performed during the study period. In patients with significant coronary artery disease, the adjusted odds ratio (OR) for women to undergo PCI compared with men was 0.95 (95% CI 0.92-0.99) and 0.81 (0.76-0.87) for referrals to CABG. In patients with 1-vessel disease, women were less likely to undergo PCI than men, but women with 2- or 3-vessel or left main stem disease were more likely to undergo PCI. All in-hospital complications after CA followed by PCI were more frequent among women (adjusted OR 1.58 [1.47-1.70]). There was no gender difference in adjusted 30-day mortality after PCI (1.02 [0.92-1.12]) and after CABG (0.97 [0.72-1.31]).

CONCLUSIONS

After CA showing 1-vessel disease, women as compared with men were less likely to undergo PCI. In the group with 2- or 3-vessel disease or left main stem stenosis, women were more likely to undergo PCI but less likely to undergo CABG. However, there was no gender difference in 30-day mortality.

Delayed Care and Mortality Among Women and Men With Myocardial Infarction

BACKGROUND

Women with ST-segment-elevation myocardial infarction (STEMI) have higher mortality rates than men. We investigated whether sex-related differences in timely access to care among STEMI patients may be a factor associated with excess risk of early mortality in women.

METHODS AND RESULTS

We identified 6022 STEMI patients who had information on time of symptom onset to time of hospital presentation at 41 hospitals participating in the ISACS-TC (International Survey of Acute Coronary Syndromes in Transitional Countries) registry (NCT01218776) from October 2010 through April 2016. Patients were stratified into time-delay cohorts. We estimated the 30-day risk of all-cause mortality in each cohort. Despite similar delays in seeking care, the overall time from symptom onset to hospital presentation was longer for women than men (median: 270 minutes [range: 130-776] versus 240 minutes [range: 120-600]). After adjustment for baseline variables, female sex was independently associated with greater risk of 30-day mortality (odds ratio: 1.58; 95% confidence interval, 1.27-1.97). Sex differences in mortality following STEMI were no longer observed for patients having delays from symptom onset to hospital presentation of ≤1 hour (odds ratio: 0.77; 95% confidence interval, 0.29-2.02).

CONCLUSIONS

Sex difference in mortality following STEMI persists and appears to be driven by prehospital delays in hospital presentation. Women appear to be more vulnerable to prolonged untreated ischemia.

CLINICAL TRIAL REGISTRATION

URL: https://www.clinicaltrials.gov/. Unique identifier: NCT01218776.

Analyzing cardiovascular treatment guidelines application to women and minority populations

Despite nearly 30 years of treatment guidelines for cardiovascular diseases and risk factors and a parallel growth in the understanding of cardiovascular disease disparities by sex and race/ethnicity, such disparities persist. The goals of this review are to consider the possible role of three factors: the one-size-fits-all approach of most treatment guidelines, adoption of guideline-recommended treatments in clinical practice, and patient adherence to recommended practice, especially the relationship between adherence and patient perceptions. Guideline authors repeatedly call for more inclusion of women and minorities in the clinical trials that make guidelines possible, but despite challenges, guidelines are largely effective when implemented, as shown by a wealth of post hoc analyses. However, the data also suggest that one-size-fits-all treatment guidelines are not sufficiently generalizable and there is evidence of a distinct lag time between definitive clinical evidence and its widespread implementation. Patient perspectives may also play both a direct and indirect role in adherence to treatments. What emerges from the literature is an important continuing need for increased inclusion of women and minority subgroups in clinical trials to allow analyses that can provide evidence for differential treatments when needed. Increased effort is needed to implement definitive clinical improvements more rapidly. Patient input and feedback may also help inform clinical practice and clinical research with a better understanding of how to enhance patient adherence, but evidence for this is lacking for the groups most affected by disparities.

Cardiovascular susceptibility to in vivo ischemic myocardial injury in male and female rat offspring exposed to prenatal hypoxia

Intrauterine growth restriction (IUGR) following prenatal hypoxia exposure leads to a higher risk of developing cardiovascular disease (CVD) in later life. Our aim was to evaluate cardiac susceptibility and its pathophysiological mechanisms following acute myocardial infarction (MI) in adult rat offspring exposed to prenatal hypoxia. Male and female rat offspring, which experienced normoxia (21% O2) or hypoxia (11% O2) in utero underwent sham or MI surgery at 12 weeks of age. Echocardiographic data revealed that both sexes had systolic dysfunction following MI surgery, independent of prenatal hypoxia. Male offspring exposed to prenatal hypoxia, however, had left ventricular dilatation, global dysfunction, and signs of diastolic dysfunction following MI surgery as evident by increased left ventricular internal diameter (LVID) during diastole (MI effect, P<0.01), Tei index (MI effect, P<0.001), and E/E′ ratio (prenatal hypoxia or MI effect, P<0.01). In contrast, diastolic dysfunction in female offspring was not as evident. Cardiac superoxide levels increased only in prenatal hypoxia exposed male offspring. Cardiac sarcoendoplasmic reticulum Ca2+-ATPase2a (SERCA2a) levels, a marker of cardiac injury and dysfunction, decreased in both male and female MI groups independent of prenatal hypoxia. Prenatal hypoxia increased cardiac ryanodine receptor 2 (RYR2) protein levels, while MI reduced RYR2 in only male offspring. In conclusion, male offspring exposed to prenatal hypoxia had an increased susceptibility to ischemic myocardial injury involving cardiac phenotypes similar to heart failure involving diastolic dysfunction in adult life compared with both offspring from healthy pregnancies and their female counterparts.

Utility of Imaging in Risk Stratification of Chest Pain in Women

OPINION STATEMENT

Recent decades have seen a growing recognition that the understanding of sex differences in cardiovascular disease (CVD) is vital to optimal diagnosis and management, particularly of women (Mosca et al. Circulation 124:2145-54, 2011). There is simultaneously an increasing appreciation of the multifactorial nature of ischemic heart disease (IHD) in many patients, in whom disease may extend beyond the epicardial coronaries. While obstructive coronary artery disease (CAD) remains underdiagnosed in women and still represents a major burden of disease, women also present with nonobstructive CAD more commonly than men (Patel et al. N Engl J Med 362:886-95, 2010). Indeed, microvascular dysfunction, coronary artery vasospasm, and coronary dissections contribute to a larger proportion of IHD in women than men (Bairey Merz et al. J Am Coll Cardiol 47:S21-9, 2006). Here, we review the symptom presentation of women with IHD and the noninvasive modalities used to risk stratify women with suspected IHD.