Basis for Sex-Dependent Outcomes in Acute Coronary Syndrome

Sex-Related Differences in Thrombus Burden in STEMI Patients Undergoing Primary Percutaneous Coronary Intervention

BACKGROUND

Women have a worse prognosis after ST-segment elevation myocardial infarction (STEMI) than men. The prognostic role of thrombus burden (TB) in influencing the sex-related differences in clinical outcomes after STEMI has not been clearly investigated.

OBJECTIVES

The aim of this study was to assess the sex-related differences in TB and its clinical implications in patients with STEMI.

METHODS

Individual patient data from the 3 major randomized clinical trials of manual thrombus aspiration were analyzed, encompassing a total of 19,047 patients with STEMI, of whom 13,885 (76.1%) were men and 4,371 (23.9%) were women. The primary outcome of interest was 1-year cardiovascular (CV) death. The secondary outcomes of interest were recurrent myocardial infarction, heart failure, all-cause mortality, stroke, stent thrombosis (ST), and target vessel revascularization at 1 year.

RESULTS

Patients with high TB (HTB) had worse 1-year outcomes compared with those presenting with low TB (adjusted HR for CV death: 1.52; 95% CI: 1.10-2.12; P = 0.01). In unadjusted analyses, female sex was associated with an increased risk for 1-year CV death regardless of TB. After adjustment, the risk for 1-year CV death was higher only in women with HTB (HR: 1.23; 95% CI: 1.18-1.28; P < 0.001), who also had an increased risk for all-cause death and ST than men.

CONCLUSIONS

In patients with STEMI, angiographic evidence of HTB negatively affected prognosis. Among patients with HTB, women had an excess risk for ST, CV, and all-cause mortality than men. Further investigations are warranted to better understand the pathophysiological mechanisms leading to excess mortality in women with STEMI and HTB.

Improvement of long-term clinical outcomes by successful PCI in the very elderly women with ACS

BACKGROUND

Whether very elderly women with acute coronary syndromes (ACS) should receive aggressive percutaneous coronary intervention (PCI) is still controversial. We assessed the effectiveness and long-term clinical outcomes of successful PCI in this population and identified prognostic factors which might contribute to the incidence of major adverse cardiovascular and cerebrovascular events (MACCE) in the very elderly female PCI cohort.

METHODS

Female ACS patients aged ≥ 80 years were consecutively enrolled (n = 729) into the study. All the patients were divided into female PCI group (n = 232) and medical group (n = 497). MACCE was followed up, including non-fatal myocardial infarction (MI), stroke, heart failure requiring hospitalization (HFRH), cardiovascular (CV) death, and the composite of them. After propensity score matching (1:1), the incidences of MACCE were compared between the two groups. Clinical and coronary artery lesion characteristics were compared between the female PCI patients with (n = 56) and without MACCE (n = 176). Multivariate Cox regression analysis was performed to identify risk factors which independently associated with MACCE in the female PCI patients. MACCE of male PCI patients, who aged ≥ 80 years and hospitalized in the same period (n = 264), was also compared with that of the female PCI patients.

RESULTS

A total of 32% very elderly female ACS patients received PCI in the present study. (1) Compared to female medical group, PCI procedure significantly alleviated the risks of MACCE: non-fatal MI (6.2% vs. 20.2%, P < 0.001), HFRH (10.9% vs. 22.5%, P = 0.012), CV death (12.4% vs. 28.7%, P < 0.001) and the composite MACCE (24.0% vs. 44.2%, P < 0.001) during the median follow-up period of 36 months. (2) Between very elderly female and male PCI patients, there were no significant differences in occurrence of MACCE (P = 0.232) and CV death (P = 0.951). (3) Multivariate Cox analysis revealed that ST-segment elevation myocardial infarction (STEMI) (HR 1.944, 95% CI 1.11-3.403, P = 0.02) and elevated log- N-Terminal pro-brain natriuretic peptide (NT-proBNP) (HR 1.689, 95% CI 1.029-2.773, P = 0.038) were independently associated with the incidence of MACCE in the female PCI patients.

CONCLUSIONS

PCI procedure significantly attenuated the risk of MACCE and improved the long-term clinical outcomes in very elderly female ACS patients. Aggressive PCI strategy may be reasonable in this population.

Multiple interventions following an acute coronary syndrome event increase uptake into cardiac rehabilitation

AIMS

Cardiac rehabilitation (CR) improves morbidity and mortality. Uptake varies for patients following acute coronary syndrome (ACS). Entry into CR is often dependent on the management strategy received, lower following percutaneous coronary intervention (PCI), higher following coronary artery bypass grafting (CABG). This study sought to investigate differences in CR uptake following an ACS event for those patients receiving multiple treatments.

METHODS

Data was from the National Audit of CR between 2016 and 2019. Patients with ACS were categorised as: no intervention; one treatment (such as any PCI, CABG, any valve surgery and any device therapy); two treatments; or three or more treatments. Baseline demographics and logistic regression were used to analyse the effect of multiple treatment intervention on uptake into CR.

RESULTS

A total of 6833 ACS patients were included in the analysis (0 treatments 2014, 1 treatment 3104, ≥2 treatments 2799). Patients who received ≥2 therapeutic interventions were more likely to be male, partnered and >2 comorbidities. Logistic regression showed a positive relationship between uptake total intervention. Similar associations were seen: being younger, male, partnered and having any comorbidity. The hospital stay, history of angina, diabetes and stroke was negatively correlated with an uptake.

CONCLUSION

This study showed for the first time that multiple interventions following ACS is a significant predictor of uptake into CR. The findings align with recent trends with medically managed myocardial infarction uptake. Our findings identify factors associated with poor uptake to CR which should be considered as part of strategy to increase participation.

Sex Differences in the Outcomes of Elderly Patients with Acute Coronary Syndrome

Background

The impact of sex on the outcome of patients with acute coronary syndrome (ACS) has been suggested, but little is known about its impact on elderly patients with ACS.

Methods

This study analyzed the impact of sex on in-hospital and 1-year outcomes of elderly (≥75 years of age) patients with ACS hospitalized in our department between January 2013 and December 2017.

Results

A total of 711 patients were included: 273 (38.4%) women and 438 (61.6%) men. Their age ranged from 75 to 94 years, similar between women and men. Women had more comorbidities (hypertension (79.5% vs. 72.8%, p=0.050), diabetes mellitus (35.2% vs. 26.5%, p=0.014), and hyperuricemia (39.9% vs. 32.4%, p=0.042)) and had a higher prevalence of non-ST-segment elevation ACS (NSTE-ACS) (79.5% vs. 71.2%, p=0.014) than men. The prevalence of current smoking (56.5% vs. 5.4%, p < 0.001), creatinine levels (124.4 ± 98.6 vs. 89.9 ± 54.1, p < 0.001), and revascularization rate (39.7% vs. 30.0%, p=0.022) were higher, and troponin TnT and NT-proBNP tended to be higher in men than in women. The in-hospital mortality rate was similar (3.5% vs. 4.4%, p=0.693), but the 1-year mortality rate was lower in women than in men (14.7% vs. 21.7%, p=0.020). The multivariable analysis showed that female sex was a protective factor for 1-year mortality in all patients (OR = 0.565, 95% CI 0.351–0.908, p=0.018) and in patients with STEMI (OR = 0.416, 95% CI 0.184–0.940, p=0.035) after adjustment.

Conclusions

Among the elderly patients with ACS, the 1-year mortality rate was lower in women than in men, which could be associated with comorbidities and ACS type.

Gender-based difference in early mortality among patients with ST-segment elevation myocardial infarction: insights from Kermanshah STEMI Registry

Introduction: This study aimed to evaluate the in-hospital mortality of patients with ST-segment elevation myocardial infarction (STEMI), according to gender and other likely risk factors.

Methods: This study reports on data relating to 1,484 consecutive patients with STEMI registered from June 2016 to May 2018 in the Western Iran STEMI Registry. Data were collected using a standardized case report developed by the European Observational Registry Program (EORP). The relationship between in-hospital mortality and potential predicting variables was assessed multivariable logistic regression. Differences between groups in mortality rates were compared using chi-square tests and independent t-tests.

Results: Out of the 1484 patients, 311(21%) were female. Women were different from men in terms of age (65.8 vs. 59), prevalence of hypertension (HTN) (63.7% vs. 35.4%), diabetes mellitus (DM) (37.7% vs. 16.2%), hypercholesterolemia (36.7% vs. 18.5%) and the history of previous congestive heart failure (CHF) (6.6% vs. 3.0%). Smoking was more prevalent among men (55.9% vs. 13.2%). Although the in-hospital mortality rate was higher in women (11.6% vs. 5.5%), after adjusting for other risk factors, female sex was not an independent predictor for in-hospital mortality. Multivariable analysis identified that age and higher Killip class (≥II) were significantly associated with in-hospital mortality rate.

Conclusion: In-hospital mortality after STEMI in women was higher than men. However, the role of sex as an independent predictor of mortality disappeared in regression analysis. The gender based difference in in-hospital mortality after STEMI may be related to the poorer cardiovascular disease (CVD) risk factor profile of the women.

Does sex predict quality of life after acute coronary syndromes: an Australian, state-wide, multicentre prospective cohort study

OBJECTIVE

Women have reported higher mortality and major adverse cardiovascular events (MACE) following acute coronary syndromes (ACSs) compared with men. With this in mind, we aimed to identify predictors of poor quality of life (QoL) post-ACS as our primary outcome. We examined predictors of MACE, major cerebrovascular events and major bleeding as our secondary outcome.

DESIGN

Prospective cohort study.

SETTING

30 metropolitan centres across the Victorian Cardiac Outcomes Registry network.

PARTICIPANTS

16 517 patients treated with percutaneous coronary intervention (PCI) for ACS (22.9% females). Selection/inclusion criteria: consecutive patients with successful or attempted PCI for ACS from 2013 to 2016, alive at 30 days post-PCI.

EXCLUSION CRITERIA

patients not fulfilling ACS criteria. At 30 days, 2497 (64.7% females) completed the QoL EQ-5D-3L instrument.

PRIMARY AND SECONDARY OUTCOME MEASURES

QoL, assessed using the EuroQo-5Dimensions (EQ-5D-3L) instrument by telephone at 30 days. Independent predictors of QoL were identified by univariate and multivariate logistic regression analyses.

RESULTS

Women were significantly older with more diabetes, cerebrovascular disease and renal failure. Regarding the primary outcome, female sex was independently associated with moderate/severe impairment in all EQ-5D-3L domains including mobility (OR 2.38, 95% CI 2.06 to 2.75, p<0.001), personal care (OR 2.14, 95% CI 1.73 to 2.66, p<0.001), activities of daily living (OR 1.84, 95% CI 1.63 to 2.08, p<0.001), pain/discomfort (OR 1.44, 95% CI 1.24 to 1.67, p<0.001) and anxiety/depression (OR 1.49, 95% CI 1.30 to 1.70, p<0.001). Women had significantly lower self-rated Visual Analogue Scale scores (80.0 for both groups, IQR 60-85 vs 70-90, p<0.001). There was no significant difference between the sexes in secondary outcomes.

CONCLUSIONS

Female sex was a predictor of poorer QoL following PCI for ACS including significantly higher pain, anxiety and depression. This was independent of age, comorbidities and ACS presentation. There is a clinical need for a tailored approach in female ACS management, for example, emphasis on management of depressive and anxiety symptoms.

Spectrum and dosing of urate-lowering drugs in a large cohort of chronic kidney disease patients and their effect on serum urate levels: a cross-sectional analysis from the German Chronic Kidney Disease study

Background

Despite a plethora of studies on the effect of urate-lowering therapy (ULT) in patients with chronic kidney disease (CKD), current guidelines on the treatment of hyperuricaemia and gout vary, especially concerning the need for dose adjustment of allopurinol, whose main metabolite is accumulating with declining renal function. Data on allopurinol dosing and its relationship to renal function, co-medication and sex and the resulting urate level in large cohorts are missing.

Methods

We studied a subgroup of 2378 patients of the German Chronic Kidney Disease (GCKD) study to determine prescription patterns of ULT among CKD patients under nephrological care and the relationship of ULT dose to urate levels. Prescription and dosing of ULT were manually abstracted from the patient’s paper charts at the baseline visit, in which all currently used medications and their dosing were recorded.

Results

In this cohort, 39.6% were women, the mean estimated glomerular filtration rate (eGFR) was 51.3 ± 19.3 mL/min/1.73 m² and the mean age was 59.0 ± 12.4 years. Of the 2378 examined patients, 666 (28.0%) received ULT. The dose of ULT was available for 572 patients. The main ULT agent was allopurinol (94.4%), followed by febuxostat (2.9%) and benzbromarone (2.6%). Of the 540 patients who used allopurinol with a reported daily dose, 480 had an eGFR <60 mL/min/1.73 m² and 320 had an eGFR <45 mL/min/1.73 m², 31.5% of the latter (n = 101) received a dose >150 mg/day, the recommended maximal dose for this level of eGFR. The prescribed dose was not related to eGFR: the median eGFR for patients taking 100, 150 and 300 mg/day was 40 [interquartile range (IQR) 32–49], 43 (34–52) and 42 (35–54) mL/min/1.73 m², respectively. Patients with lower doses of allopurinol had higher serum urate levels than patients with higher (than recommended) allopurinol doses. Sex, alcohol intake, eGFR, use of diuretics and treatment with allopurinol were independent determinants of serum urate levels in multivariate regression analysis.

Conclusions

The most frequently used drug to lower serum urate levels in this CKD cohort was allopurinol. Even in patients regularly seen by nephrologists, the dose of allopurinol is often not adjusted to the current eGFR. Patients with higher ULT doses achieved better control of their serum urate levels. Lowering of serum urate in CKD patients requires balancing potential adverse effects of allopurinol with suboptimal control of serum urate levels.

Sex differences in characteristics and outcome in acute coronary syndrome patients in the Netherlands

BACKGROUND

Sex differences in acute coronary syndrome (ACS) have been reported, but little is known about the situation in the Netherlands.

METHODS

This registry is a merge of available data on ACS patients in the electronic data capture systems of 11 centres with 24/7 interventional cardiology services. We included patients >18 years undergoing a cardiac catheterisation between 2010-2012. We evaluated sex differences in clinical and procedural characteristics and 1‑year mortality.

RESULTS

A total of 29,265 ACS patients (8,720 women and 20,545 men) were registered. Women were on average 4.5 years older (68.5 vs 63.0 years, p < 0.001) and had a higher prevalence of hypertension (62.7 vs 49.8%, p < 0.001) and insulin-dependent diabetes mellitus (9.6 vs 6.8%, p < 0.001) than men. Women less often presented with ST-elevation myocardial infarction (43.7% vs 47.6%, p < 0.001) and appeared to have less extensive coronary artery disease than men. Women less often underwent coronary angiography by radial access (52.5 vs 55.9%, p < 0.001). One-year mortality was higher in women than in men (7.3% and 5.6%, p < 0.001). More specific, the relationship between sex and mortality was age-dependent and showed higher mortality in women ≤71 years, but lower mortality in older women compared with men (p-interaction <0.001).

CONCLUSION

We found differences in clinical and procedural characteristics and outcome between women and men admitted for ACS, which are in line with other Western countries. The limitations of our registry, based on existing local databases, can be overcome by the use of the prospective Netherlands Heart Registry that is currently in development.

Sex Differences in Cardiac Troponin Testing in Patients Presenting to the Emergency Department with Chest Pain

BACKGROUND

Elevated cardiac troponin (cTn), with signs/symptoms of ischemia, is a key element in a diagnosis of myocardial infarction (MI). Underdiagnosis of MI in women has been attributed to atypical symptoms, inconsistent ECG findings, and less diagnostic testing. We sought to determine if there are sex differences in cTn testing following presentation to the emergency department (ED) with a chief complaint of ischemic chest pain (CP) and if presentation affects diagnostic assessment.

METHODS

All adults presenting to six hospital EDs in the Vancouver, Canada with a chief complaint of ischemic CP from 2009 to 2013 were included. The highest cTn level within 24 hours of ED presentation was used. CP was classified into cardiac- or respiratory dominant based on standard Canadian Emergency Department Triage and Acuity Scale coding. Chi-square testing was used to test for sex differences in CP categories and cTn testing within 24 hours. Logistic regression models were used to examine the association between sex, cTn testing, and CP categories.

RESULTS

Of 27,063 patients with ischemic CP, cardiac presentation was more common in men than women, irrespective of age. Among cardiac CP, 24.7% of men were <50 years compared to 18.2% of women; however, more women (19.9%) than men (11.6%) were >80 years. Overall, women were 1.8% less likely to have cTn testing; in patients <50 years, testing was markedly lower in women compared to men [odds ratio, OR (95% confidence intervals, CI) 0.78 (0.70-0.87)]. The odds of cardiac catheterization within 90 days of ED presentation were lower in women [OR, (95% CI) 0.52 (0.44-0.63)]. Even with cardiac CP, 17.7% of women versus 32.7% of men had cardiac catheterization.

CONCLUSIONS

In men and women presenting to the ED with ischemic CP, cTn testing overall is similar except among young women under 50 years old, where it is markedly lower. Women undergo less cardiac catheterization, irrespective of CP type.

Gender differences in the management of acute coronary syndrome patients: One year results from HPIAR (HP-India ACS Registry)

INTRODUCTION

Data from high-income countries suggest that women receive less intensive diagnostic and therapeutic management than men for acute coronary syndrome (ACS). There is a paucity of such data in the Indian population, which is 69% rural and prior studies focused mostly on urban populations. The objective of the present study was to identify the gender based differences in ACS management, if any, in a predominantly rural population.

METHODS

Data from 35 hospitals across Himachal Pradesh covering >90% of state population were collected for one year (July 2015-June 2016). A total of 2118 ACS subjects met inclusion criteria and baseline characteristics, in-hospital treatments and mortality rates were analyzed.

RESULTS

Women constituted less than one-third of ACS population. Women were older compared to men and were more likely to present with NSTEMI/UA. Misinterpretation of initial symptoms and late presentation were also common in women. Fewer women received optimal guideline based treatment and PCI (0.9% vs 4.2%, p<0.01). Compare to men, women more often had Killip class >1 (27.3% vs 20.4%, p<0.01) and higher in-hospital mortality (8.5% vs 5.6%, p=0.009). On multivariate analysis the association between female gender and mortality was attenuated (adjusted odds ratio [OR]=1.36 [0.77-2.38]).

CONCLUSION

The present study from India, is the first of its kind to evaluate the gender based differences among ACS patients, in a predominantly rural population. Our analysis demonstrates a significant gender based difference between symptom awareness and delay in presentation, management and in-hospital outcome. Further studies are warranted across other parts of country to investigate this gender disparity.

Sex Differences in Diagnoses, Treatment, and Outcomes for Emergency Department Patients With Chest Pain and Elevated Cardiac Troponin

OBJECTIVE

While sex differences in the treatment and outcomes of subjects with acute coronary syndromes are well documented, little is known about the impact of cardiac troponin (cTn) levels obtained in the emergency department (ED) on the observed sex differences. We sought to determine whether cTn levels by chest pain features modify sex differences in diagnosis, treatment, and outcomes in patients presenting with chest pain suggestive of ischemia.

METHODS

All adults presenting to two hospitals in Vancouver, Canada, between May 2008 and March 2013 with ischemic chest pain and with cTn testing were included in the study. Outcomes were obtained through data linkage with population-based administrative data sets, including Vital Statistics (death), Discharge Abstract Database (hospitalizations), and PharmaNet (medications). Cumulative event rates for the composite major adverse cardiac event (MACE) endpoint (death, myocardial infarction [MI], incident admission for heart failure or for angina requiring diagnostic catheterization or revascularization) were estimated for each sex and cTn level using the Kaplan-Meier method; Cox models were used to estimate hazard ratios and 95% confidence interval (CIs) for 1-year MACE and 7-day catheterization. Logistic models were used to estimate odds ratios (ORs) and 95% CI for 90-day medication use.

RESULTS

Over the 5-year study period, 25,539 patients presented to the ED with chest pain of which 7,272 (2,933 females and 4,339 males) met the inclusion criteria. Among patients with chest pain with cardiac features/history and cTn > 99th percentile, females were less likely to be diagnosed with MI (46.4% vs. 57.5%). Females in the cTnI > 99th percentile group had the worst outcomes with a 1-year MACE rate of 22.7% (95% CI = 18.5-27.7) versus 18.8% (95% CI = 16.2-21.6), although this difference was attenuated and not statistically significant after adjustment for baseline differences. Overall, females underwent fewer diagnostic catheterizations than males within 7 days of admission to the ED. Even when cTn was above the 99th percentile and the chest pain was cardiac in nature, 48.4% of females underwent a diagnostic catheterization compared to 64.3% of males (p < 0.001). Within 90 days of discharge, females were less likely to use the evidence-based cardiac medications. The most striking sex differences were noted when cTnI levels were > 99th percentile and when the chest pain was cardiac in nature; males filled 25% more prescriptions for statins than their female counterparts. Adjustment for baseline differences did not attenuate this difference.

CONCLUSIONS

Sex differences in diagnosis and treatment after presentation to the ED with chest pain are not explained by differences in chest pain features or levels of cTn. Even when females have cardiac chest pain and cTn levels > 99th percentile, they are less likely to be diagnosed with MI, less likely to undergo diagnostic cardiac catheterization within 7 days, and less likely to use evidence-based cardiac medications, but they have the highest 1-year MACE rate. The higher MACE rate appears to be driven by the higher burden of comorbid conditions.

Relations of Sex to Diagnosis and Outcomes in Acute Coronary Syndrome

BACKGROUND

The atypical presentation of women with acute coronary syndrome (ACS) has been related to delayed diagnosis and treatment, which may explain worse outcome compared with men.

METHODS AND RESULTS

We analyzed pooled data of 2520 patients of 2 prospective cohorts in terms of differences in presentation and management of women and men suggestive of ACS. Using logistic regression, we established 2 diagnostic models and tested their diagnostic performance in both sexes separately. Sex-specific differences in management of patients with ACS were ascertained and a 2-year follow-up was performed. Women were older than men (median 67 versus 61 years, P=0.001), had more often dyspnea (22% versus 18%, P=0.024), nausea or vomiting (26% versus 16%, P=0.001) and radiating chest pain (47% versus 40%, P=0.001). Classical risk factors (smoking, diabetes mellitus, dyslipidemia or known coronary artery disease) were less frequent in women. Diagnostic models showed no significant sex-related differences in diagnostic performance in a "first contact" setting (medical history and symptoms) or after "complete triage" (including ECG and biomarkers). Women with ACS underwent coronary angiography (73.8% versus 84.3%, P<0.001) and revascularization (53.8% versus 70.1%, P<0.001) less frequently. Two-year incidence of myocardial infarction and death was similar in both sexes, but revascularization and cardiac rehospitalization were more frequent in men.

CONCLUSIONS

In a large cohort of patients with suspected ACS, sex differences in clinical presentation did not impair diagnostic accuracy. Two-year outcomes were comparable. Our findings suggest a benefit of chest pain units to minimize sex differences in ACS management and prognosis.

CLINICAL TRIAL REGISTRATION

URL: https://www.clinicaltrials.gov. Unique identifiers: NCT02355457 (BACC), NCT03227159 (stenoCardia).

Sex-specific differences in risk factors for in-hospital mortality and complications in patients with acute coronary syndromes : An observational cohort study

BACKGROUND

The goal of this observational cohort study was to examine gender-specific differences in the incidence of acute coronary syndrome (ACS), in-hospital complications and mortality.

METHODS

A cohort of 1550 patients with the primary diagnosis of ACS were enrolled in the study over a period of 4 years. The in-hospital mortality and complications were analyzed as the main outcome measures.

RESULTS

Women were significantly older compared to men (71 ± 11 years vs. 64 ± 12 years, p < 0.001) and had higher in-hospital mortality and complications due to this age difference. The prevalence of smoking was lower while hypertension and history of angina pectoris was more frequent in women, independent of age. Percutaneous transluminal coronary angioplasty (PTCA) with or without stenting as well as coronary catheterization significantly reduced in-hospital mortality and complications while thrombolytic therapy was associated with a 3.3 times increased mortality odds ratio (OR, p = 0.01). Other significant predictors of in-hospital mortality were in-hospital complications (OR 25, p < 0.001) and ST segment elevation myocardial infarction (STEMI, OR 4.5, p < 0.001).

CONCLUSIONS

Women differed from men in terms of ACS clinical characteristics, treatment, invasive procedures and survival outcome and some of these effects were age-related. The future emphasis should be based on the prevention of modifiable risk factors and identification of subgroups of female patients that could benefit from more aggressive therapeutic strategies.

Treatment and outcomes of acute coronary syndromes in women: An analysis of a multicenter quality improvement Chinese study

BACKGROUND

Variations in care and outcomes by sex in patients with acute coronary syndrome (ACS) have been reported worldwide. The aims of this study are to describe ACS management according to sex in China and the effects of a quality improvement program in Chinese male and female ACS patients.

METHODS AND RESULTS

Clinical Pathways for Acute Coronary Syndromes - Phase 2 (CPACS-2) was a cluster randomized trial to test whether a clinical pathways-based intervention would improve ACS management in China. The study enrolled 15,141 hospitalized patients [4631 (30.6%) were women] from 75 hospitals throughout China between October 2007 and August 2010. The intervention included clinical pathway implementation and performance measurement using standardized indicators with 6 monthly audit-feedback cycles. Eight key performance indicators reflecting in hospital management of ACS were measured. After adjustment for differences in patient characteristics and comorbidities at presentation, women were significantly less likely to undergo coronary angiography when indicated (RR 0.88 [0.85 to 0.92], P<0.001), less likely to receive guideline recommended medical therapies at discharge (RR 0.94 [0.91 to 0.98], P=0.003) and more likely to be hospitalized for shorter (mean difference -0.42 [-0.73 to -0.12] days, P=0.007). However, in-hospital clinical outcomes did not differ by sex. There was no evidence of heterogeneity in the relative effects of the quality improvement initiative by sex.

CONCLUSIONS

Sex disparities were apparent in some key quality of care indicators for patients with suspected with ACS presenting to hospitals in China. The beneficial effect of the quality improvement program was consistent in women and men.

CLINICAL TRIAL REGISTRATION

http://www.anzctr.org.au/default.aspx. Unique identifier: ACTRN12609000491268.

Sex differences in the management of acute coronary syndromes in Italy: data from the MANTRA registry

AIMS

Several studies have shown sex differences in acute coronary syndromes (ACS), but their understanding is far from complete. Thus, the study aims to evaluate sex differences in management and outcomes of unselected patients with ACS.

METHODS AND RESULTS

From 22 April 2009 to 29 December 2010, 6394 consecutive patients with ACS (44.7% ST-elevation myocardial infarction) were prospectively enrolled and followed for 6 months. Women (N = 1894, 29.6%) were older, had more comorbidities, and worse clinical presentation than men. Fewer women underwent reperfusion [68.0% women vs. 84.1% men, P < 0.0001, adjusted odds ratio (OR): 0.53, 95% confidence interval (CI): 0.43-0.66] in ST-elevation myocardial infarction, and coronary angiography during hospitalization (72.2% women vs. 81.1% men, P < 0.0001, adjusted OR: 0.70, 95% CI: 0.57-0.85) in no-ST-elevation ACS. Women had worse outcomes than men during hospitalization, and at 6-month follow-up. At multivariable analysis, female sex was significantly associated with a higher risk of in-hospital Thrombolysis in Myocardial Infarction major bleedings (OR: 1.80, 95% CI: 1.09-2.96, P = 0.02), but not of 6-month death.

CONCLUSION

Women with ACS in clinical practice present a clustering of high-risk features that may contribute to their worse outcomes as compared with men, although female sex is not an independent predictor of death at 6-month follow-up.

Acute coronary syndromes in women and men

Evidence of sex-related disparities in the care and outcomes of patients with acute coronary syndrome (ACS) emerged >30 years ago, and yet the mechanisms behind these sex-specific differences remain unclear. In this Review, we discuss the current literature on differences between women and men in the clinical presentation, pathophysiology, evaluation, management, and outcomes of ACS. Although the symptoms of ACS and the benefits of therapy generally overlap between women and men, women continue to receive less-aggressive invasive and pharmacological therapy than men. In addition, young women in particular have worse short-term and long-term outcomes than men. To understand better the mechanisms behind these continued disparities, we have identified areas of future research that need to be urgently addressed in fields that range from clinical evaluation and management, to increasing representation of women in research.

Differences in Terminal Hospitalization Care Between U.S. Men and Women

CONTEXT

In many settings, men and women receive different care.

OBJECTIVES

We sought to determine whether men and women receive different care during terminal hospitalizations.

METHODS

We analyzed data of 98,314 adult patients who died while hospitalized in 458 acute care hospitals in the U.S. during 2011. We examined sex-based differences in lengths of stay (LOS), resuscitation status, and intensive interventions and processes of care, adjusting for patient- and hospital-level characteristics.

RESULTS

Women represented half of the sample (48,509; 49.34%), were older than men (73.8 vs. 70.6 years, P < 0.0001), and less likely to be married (27.7% vs. 48.3%, P < 0.001). Among all patients, median LOS was four days (interquartile range 2-10); 19.1% of subjects received cardiopulmonary resuscitation; 37.6% had a do-not-resuscitate order during the admission; and 51.6% received mechanical ventilation. Compared with men, women had slightly shorter hospitalizations (adjusted LOS: -0.16 days; 95% CI -0.19, -0.12) and were more likely to have a do-not-resuscitate order (odds ratio [OR] 1.08; 95% CI 1.05, 1.11). Women remained less likely to receive care in an intensive care unit (OR 0.95; 95% CI 0.93, 0.98), cardiopulmonary resuscitation (OR 0.83; 95% CI 0.80, 0.86), mechanical ventilation (OR 0.94; 95% CI 0.91, 0.97), hemodialysis (adjusted OR 0.81; 95% CI 0.78, 0.86), or surgical procedures (OR 0.88; 95% CI 0.84, 0.93).

CONCLUSION

Men who die in hospitals receive more aggressive care than women. Further research should examine potential causes of this overall pattern.

Sex-Based Disparities in Incidence, Treatment, and Outcomes of Cardiac Arrest in the United States, 2003-2012

BACKGROUND

Recent studies have shown improving survival after cardiac arrest. However, data regarding sex-based disparities in treatment and outcomes after cardiac arrest are limited.

METHODS AND RESULTS

We performed a retrospective analysis of all patients suffering cardiac arrest between 2003 and 2012 using the Nationwide Inpatient Sample database. Annual rates of cardiac arrest, rates of utilization of coronary angiography/percutaneous coronary interventions/targeted temperature management, and sex-based outcomes after cardiac arrest were examined. Among a total of 1 436 052 discharge records analyzed for cardiac arrest patients, 45.4% (n=651 745) were females. Women were less likely to present with ventricular tachycardia/ventricular fibrillation arrests compared with men throughout the study period. The annual rates of cardiac arrests have increased from 2003 to 2012 by 14.0% (Ptrend<0.001) and ventricular tachycardia/ventricular fibrillation arrests have increased by 25.9% (Ptrend<0.001). Women were less likely to undergo coronary angiography, percutaneous coronary interventions, or targeted temperature management in both ventricular tachycardia/ventricular fibrillation and pulseless electrical activity/asystole arrests. Over a 10-year study period, there was a significant decrease in in-hospital mortality in women (from 69.1% to 60.9%, Ptrend<0.001) and men (from 67.2% to 58.6%, Ptrend<0.001) after cardiac arrest. In-hospital mortality was significantly higher in women compared with men (64.0% versus 61.4%; adjusted odds ratio 1.02, P<0.001), particularly in the ventricular tachycardia/ventricular fibrillation arrest cohort (49.4% versus 45.6%; adjusted odds ratio 1.11, P<0.001).

CONCLUSIONS

Women presenting with cardiac arrests are less likely to undergo therapeutic procedures, including coronary angiography, percutaneous coronary interventions, and targeted temperature management. Despite trends in improving survival after cardiac arrest over 10 years, women continue to have higher in-hospital mortality when compared with men.

Gender Differences in Predictors of Quality of Life at the Initiation of Radiation Therapy

PURPOSE/OBJECTIVES

To evaluate gender differences in quality of life (QOL), demographic, clinical, and symptom characteristics.


DESIGN

Prospective, observational.


SETTING

Two radiation oncology departments in northern California.


SAMPLE

185 patients before initiation of radiation therapy (RT).


METHODS

At their RT simulation visit, patients completed a demographic questionnaire, a measure of QOL, and symptom-specific scales. Backward elimination regression analyses were conducted to determine the significant predictors of QOL
.

MAIN RESEARCH VARIABLES

QOL, gender, and 20 potential predictors
.

FINDINGS

In women, depressive symptoms, functional status, age, and having children at home explained 64% of the variance in QOL. In men, depressive symptoms, state anxiety, number of comorbidities, being a member of a racial or ethnic minority, and age explained 70% of the variance in QOL
.

CONCLUSIONS

Predictors of QOL differed by gender. Depressive symptom score was the greatest contributor to QOL in both genders.
.

IMPLICATIONS FOR NURSING

Nurses need to assess for QOL and depression at the initiation of RT. Knowledge of the different predictors of QOL may be useful in the design of gender-specific interventions to improve QOL.

Premature cardiovascular disease following a history of hypertensive disorder of pregnancy

BACKGROUND

Following an episode of hypertensive disorder of pregnancy (HDP) women have an increased risk of cardiovascular disease over their lifetime. At the time of acute coronary syndrome we compared clinical information between women with and without a history of hypertension in pregnancy to gain further insight into the pathophysiology of cardiovascular disease in this population.

METHODS

GENESIS-PRAXY (GENdEr and Sex determInantS of cardiovascular disease: from bench to beyond-PRemature Acute Coronary SYdrome) is a prospective multicenter study, with recruitment between January 2009 and April 2013, including 242 parous women with premature acute coronary syndrome.

RESULTS

The median age was 50years (IQR 6) and HDP was common; 43 (17.8%) women had prior gestational hypertension, 33 (13.6%) preeclampsia and 166 (68.6%) a prior normotensive pregnancy. Women with a history of HDP commonly had chronic hypertension and diabetes and those presenting with ST-elevation myocardial infarction were more likely to have a history of preeclampsia (aOR 3.12, 95% CI 1.22-8.01) than were women with prior normotensive pregnancies. Neither gestational hypertension (aOR 1.40, 95% CI 0.60-3.26) nor preeclampsia (aOR 0.63, 95% CI 0.23-1.74) was associated with a higher composite risk of three-vessel, left main or proximal left anterior descending coronary disease.

CONCLUSION

In this study of women with premature cardiovascular disease, ST-elevation myocardial infarction was associated with a history of preeclampsia possibly because of persistent endothelial dysfunction. High-risk coronary lesions on angiography did not appear to have an association with preeclampsia or gestational hypertension despite a high burden of traditional risk factors.

Advances in understanding gender difference in cardiometabolic disease risk

Gender differences exist in cardiovascular or metabolic disease risk, beyond the protective effect of estrogens, mostly burdening the postmenopausal female. We aimed to review herein sex differences in pro-inflammatory states, the independence of inflammation from insulin resistance, differences in high-density lipoprotein dysfunction, in gene-environment interactions, and in the influence of current and former smoking on cardiometabolic risk. Sex differences in absorption of long-chain fatty acids are highlighted. Differences exist in the first manifestation of cardiovascular disease, men being more likely to develop coronary heart disease as a first event, compared to women who have cerebrovascular disease or heart failure as a first event. Autoimmune activation resulting from pro-inflammatory states, a fundamental mechanism for numerous chronic diseases in people prone to metabolic syndrome, is much more common in women, and these constitute major determinants. Therapeutic approaches to aspects related to sex difference are briefly reviewed.

Soy Isoflavone Protects Myocardial Ischemia/Reperfusion Injury through Increasing Endothelial Nitric Oxide Synthase and Decreasing Oxidative Stress in Ovariectomized Rats

There is a special role for estrogens in preventing and curing cardiovascular disease in women. Soy isoflavone (SI), a soy-derived phytoestrogen, has similar chemical structure to endogenous estrogen-estradiol. We investigate to elucidate the protective mechanism of SI on myocardial ischemia/reperfusion (MI/R) injury. Female SD rats underwent bilateral ovariectomy. One week later, rats were randomly divided into several groups, sham ovariectomy (control group), ovariectomy with MI/R, or ovariectomy with sham MI/R. Other ovariectomy rats were given different doses of SI or 17β-estradiol (E2). Four weeks later, they were exposed to 30 minutes of left coronary artery occlusion followed by 6 or 24 hours of reperfusion. SI administration significantly reduced myocardial infarct size and improved left ventricle function and restored endothelium-dependent relaxation function of thoracic aortas after MI/R in ovariectomized rats. SI also decreased serum creatine kinase and lactate dehydrogenase activity, reduced plasma malonaldehyde, and attenuated oxidative stress in the myocardium. Meanwhile, SI increased phosphatidylinositol 3 kinase (PI3K)/Akt/endothelial nitric oxide synthase (eNOS) signal pathway. SI failed to decrease infarct size of hearts with I/R in ovariectomized rats if PI3K was inhibited. Overall, these results indicated that SI protects myocardial ischemia/reperfusion injury in ovariectomized rats through increasing PI3K/Akt/eNOS signal pathway and decreasing oxidative stress.

Temporal Trends and Sex Differences in Revascularization and Outcomes of ST-Segment Elevation Myocardial Infarction in Younger Adults in the United States

BACKGROUND

Older women presenting with ST-segment elevation myocardial infarction (STEMI) are less likely to receive revascularization and have worse outcomes relative to their male counterparts.

OBJECTIVES

This study sought to determine temporal trends and sex differences in revascularization and in-hospital outcomes of younger patients with STEMI.

METHODS

We used the 2004 to 2011 Nationwide Inpatient Sample databases to identify all patients age 18 to 59 years hospitalized with STEMI. Temporal trends and sex differences in revascularization strategies, in-hospital mortality, and length of stay were analyzed.

RESULTS

From 2004 to 2011, of 1,363,492 younger adults (age <60 years) with acute myocardial infarction, 632,930 (46.4%) had STEMI. Younger women with acute myocardial infarction were less likely than men to present with STEMI (adjusted odds ratio [OR]: 0.74; 95% confidence interval [CI]: 0.73 to 0.75). Younger women with STEMI were less likely to receive reperfusion as compared with younger men (percutaneous coronary intervention adjusted OR: 0.74; 95% CI: 0.73 to 0.75) (coronary artery bypass grafting adjusted OR: 0.61; 95% CI: 0.60 to 0.62) (thrombolysis adjusted OR: 0.80; 95% CI: 0.78 to 0.82). From 2004 to 2011, use of percutaneous coronary intervention for STEMI increased in both younger men (63.9% to 84.8%; ptrend < 0.001) and women (53.6% to 77.7%; ptrend < 0.001). In-hospital mortality was significantly higher in younger women compared with men (4.5% vs. 3.0%; adjusted OR: 1.11; 95% CI: 1.07 to 1.15). There was an increasing trend in risk-adjusted in-hospital mortality in both younger men and women during the study period. Length of stay decreased in both younger men and women (ptrend < 0.001).

CONCLUSIONS

Younger women are less likely to receive revascularization for STEMI and have higher in-hospital mortality as compared with younger men. Use of percutaneous coronary intervention for STEMI and in-hospital mortality have increased, whereas length of stay has decreased in both sexes over the past several years.

Sex Disparities in Post-Acute Myocardial Infarction Pharmacologic Treatment Initiation and Adherence: Problem for Young Women

BACKGROUND

The prevalence of the use of secondary prevention cardiovascular medications is lower among women than men, but it is unclear if this is a result of lower treatment initiation among women or lower treatment adherence. We aimed to map the treatment pathway for survivors of acute myocardial infarction (AMI) by sex and age.

METHODS AND RESULTS

This retrospective population-based cohort study used linked administrative data sets in British Columbia (2004-2011), which include health care, prescription drugs, sociodemographic, and mortality information. The study cohort included all individuals admitted to hospital for AMI in 2007-2009 and survived for 1 year after hospital discharge. Patients were evaluated for whether they initiated and then subsequently filled prescriptions angiotensin-converting enzyme inhibitors, β-blockers, and statins. More than two thirds of AMI survivors initiated treatment on all appropriate medications, given their contraindications, within 2 months of discharge. Younger men were significantly more likely than younger women to initiate appropriate treatment (adjusted odds ratio, 1.38; 95% confidence interval, 1.10-1.75). By the end of 1 year after discharge, only one third of all AMI survivors filled all appropriate prescriptions for at least 80% of the year. There was no significant difference in adherence to medication therapy between women and men.

CONCLUSIONS

The majority of AMI survivors either discontinue treatment or do not refill their prescriptions consistently. Women <55 years are significantly less likely to be on optimal therapy by the end of 1 year after discharge, which is driven by a sex disparity in treatment initiation and not treatment adherence.

Earlier onset of diabesity-Induced adverse cardiac remodeling in female compared to male mice

OBJECTIVE

Emerging evidence suggests female type 2 diabetes (T2DM) patients may fare worse than males with respect to cardiovascular complications. Hence the impact of sex on relative progression of left ventricular (LV) remodeling in obese db/db mice was characterized.

METHODS

The changes in parameters of LV hypertrophy (heart weight, pro-hypertrophic gene expression, cardiomyocyte size) and fibrosis (LV collagen deposition and oxidative stress), in parallel with body weight and blood glucose and lipid profiles, in male and female db/db T2DM mice, at 10, 14, and 18 weeks of age, were determined.

RESULTS

Diabesity-induced cardiac remodeling was at least comparable in female (compared to male) mice. Females exhibited enhanced systemic oxidative stress and nonesterified fatty acid levels. Progression of LV pro-hypertrophic (β-myosin heavy chain, B-type natriuretic peptide) and pro-oxidant gene expression (NADPH oxidase subunit Nox2, plasminogen activator inhibitor-1 PAI-I) was, however, exaggerated in females when expressed relative to 10-week-old db/db mice. Increased cardiomyocyte width was also evident earlier in db/db females than males. No other gender differences were observed.

CONCLUSIONS

Progressive, age-dependent development of cardiac remodeling in db/db mice parallels impairments in glucose handling and oxidative stress. Certain aspects of the T2DM-induced LV remodeling response may have an earlier and/or exaggerated onset in diabetic females.

Quality of life among Patients with Acute Coronary Syndrome in Malaysia

OBJECTIVES

This study's objectives were to estimate the quality of life (QOL) of Malaysian patients with acute coronary syndrome (ACS) during admission and at 12 months, to explore the factors associated with the QOL, and to compare utility scores derived from tariffs from local and foreign populations.

METHODS

Data collected from patients with ACS between 2008 and 2009 for a study on cardiac rehabilitation at the Sarawak General Hospital were used for this study. QOL data were obtained using a validated version of the EuroQol five-dimensional questionnaire at baseline and at 12 months. Health utility scores were calculated using visual analogue scale scores and utility tariffs from Malaysia and the United Kingdom.

RESULTS

Data from 104 subjects from the earlier study was used. The mean age was 56.1 years, with 88.5% being men. The mean hospitalization duration was 6.3 days. The mean utility score was 0.75 at baseline and 0.82 at 12 months. There was a statistically significant improvement in utility from baseline to 12 months based on the Malaysian tariff (P = 0.014) but not with the UK tariff (P = 0.086). The QOL of patients was associated with sex and diagnosis of ST-segment elevation myocardial infarction.

CONCLUSIONS

Our results showed that there was a significant improvement in the QOL from baseline to 12 months. Only sex and diagnosis affected the QOL score at baseline because of limited variables available for testing. It also reconfirms the importance of applying the appropriate, country-specific utility tariffs in QOL studies. Despite limitations, the study is useful toward describing QOL among a group of Malaysian patients with ACS.

Update on ischemic heart disease and intensive cardiac care

This article summarizes the main developments reported in 2014 on ischemic heart disease, together with the most important innovations in intensive cardiac care.

Sex, socioeconomic status, access to cardiac catheterization, and outcomes for acute coronary syndromes in the context of universal healthcare coverage

BACKGROUND

Sex and neighborhood socioeconomic status (nSES) may independently affect the care and outcomes of acute coronary syndrome, partly through barriers in timely access to cardiac catheterization. We sought to determine whether sex modifies the association between nSES and the receipt of cardiac catheterization and mortality after an acute coronary syndrome in a universal healthcare system.

METHODS AND RESULTS

We studied 14 012 patients with acute coronary syndrome admitted to cardiology services between April 18, 2004, and December 31, 2011, in Southern Alberta, Canada. We used multivariable logistic regression to compare the odds of cardiac catheterization within 2 and 30 days of admission and the odds of 30-day and 1-year mortality for men and women by quintile of neighborhood median household income. Significant relationships between nSES and the receipt of cardiac catheterization and mortality after acute coronary syndrome were detected for women but not men. When examined by nSES, each incremental decrease in neighborhood income quintile for women was associated with a 6% lower odds of receiving cardiac catheterization within 30 days (P=0.01) and a 14% higher odds of 30-day mortality (P=0.03). For men, each decrease in neighborhood income quintile was associated with a 2% lower odds of receiving catheterization within 30 days (P=0.10) and a 5% higher odds of 30-day mortality (P=0.36).

CONCLUSIONS

Associations between nSES and receipt of cardiac catheterization and 30-day mortality were noted for women but not men in a universal healthcare system. Care protocols designed to improve equity of access to care and outcomes are required, especially for low-income women.