Gender gap in acute coronary heart disease: Myth or reality?

Assessing the effect of hypertension on the severity of coronary artery lesions in young female with acute coronary syndrome

BACKGROUND

The fact that hypertension is associated with atherosclerotic cardiovascular disease in the elderly has been confirmed. However, very little is known about its impact on the severity of coronary artery lesions in young people, especially in young women.

OBJECTIVE

To evaluate the effect of essential hypertension (EH) on the severity of coronary artery lesions in young women with acute coronary syndrome (ACS), and to provide a reference for clinical prevention and treatment.

METHODS

From January 2003 to January 2022, 5220 young women (aged ≤ 44 years) who underwent coronary angiography (CAG) due to chest pain symptoms were retrospectively analyzed, of whom 2684 were diagnosed with ACS. After patients with diabetes, hypercholesterolemia, and smoking were excluded, 1772 patients were enrolled. According to whether the patient has EH or not, they were divided into EH combined with ACS group (EH-ASC group; n = 824) and non-hypertension ACS group (control group; n = 948). The severity of coronary artery lesions and the follow-up results after percutaneous coronary intervention (PCI) were compared between the groups.

RESULTS

There was no significant difference in the type of ACS and the number of lesion vessels between the two groups (P > 0.05). The proportion of type B2 (17.11%) and type C (31.55%) lesions in the EH-ACS group was significantly higher than that (11.39% and 20.68%) in the control group (P < 0.05). The number of stents implanted (1.55 ± 0.95) and the length of stents (23.99 ± 6.77 mm) in the EH-ACS group were significantly greater than those (1.36 ± 0.75 and 22.34 ± 6.91 mm) the in control group (P < 0.05). During a follow-up period of 11-138 months, the cumulative rate of major adverse cardiac events (MACE) and target vessel revascularization (TVR) in the EH-ACS group (22.09% and 20.26%) was significantly higher than that (9.28% and 8.65%) in the control group (P < 0.05).

CONCLUSION

Hypertension exacerbates the severity of coronary artery lesions in young women with ACS. It is suggested that attention should be paid to the prevention and treatment of hypertension in young women, a special population, to reduce the prevalence of ACS, and a focus on improving hypertension awareness and management among young women could be beneficial in reducing the risk and severity of ACS.

Temporal trend of short-term mortality in acute myocardial between 2000-2017: A multi-centric Iranian registry

BACKGROUND

The study explores the enduring challenges of cardiovascular disease mortality, emphasizing myocardial infarction rates as a proxy for cardiovascular disease in Iran. It analyzes the 28-day mortality trends after Acute Myocardial Infarction (AMI) from 2000 to 2017.

METHODS

This retrospective cohort study is based on data from a multi-centric hospital-based registry in Isfahan. Univariate and multivariate frailty Cox regression analyses were performed to identify Hazard Ratios (HRs) for the 28-day mortality rate of AMI based on age, gender, and living region.

RESULTS

The study enrolled 121,284 patients with an average age of 62.00±12.82 years. Older age than 65 years was found to be associated with an increased risk of AMI (HR: 3.2, 95% CI: 2.7-3.8 from 2000 to 2002 and HR: 4.6, 95% CI: 3.7-5.7 for 2015-2017). There was also an association between living in the urban region and a decreased risk of AMI from 2000 to 2005 (HR: 0.64, 95% CI: 0.46-0.90), from 2000 to 2002 (HR: 0.55, 95% CI: 0.43-0.71 for 2003-2005). Results showed that the trend of change in 28-day mortality declined more significantly from 2006 to 2017 compared to 2000-2002. Younger age (61.76±12.69 vs 71.12±11.73), female gender (HR:0.77, 95%CI: 0.67,0.89), and living in urban regions (HR: 0.69, 95%CI: (0.52,0.94) were the protective factors for the 28-days mortality rate of AMI.

CONCLUSION

It can be concluded that 28-day mortality had a descending trend from 2006 to 2017. Older age, male gender, and living in a rural region were the risk factors that affected the 28-day mortality rate of AMI.

Impact of Sex- and Gender-Related Factors on Length of Stay Following Non-ST-Segment-Elevation Myocardial Infarction: A Multicountry Analysis

Background Gender-related factors are psycho-socio-cultural characteristics and are associated with adverse clinical outcomes in acute myocardial infarction, independent of sex. Whether sex- and gender-related factors contribute to the substantial heterogeneity in hospital length of stay (LOS) among patients with non-ST-segment-elevation myocardial infarction remains unknown. Methods and Results This observational cohort study combined and analyzed data from the GENESIS-PRAXY (Gender and Sex Determinants of Cardiovascular Disease: From Bench to Beyond Premature Acute Coronary Syndrome study), EVA (Endocrine Vascular Disease Approach study), and VIRGO (Variation in Recovery: Role of Gender on Outcomes of Young AMI [Acute Myocardial Infarction] Patients study) cohorts of adults hospitalized across Canada, the United States, Switzerland, Italy, Spain, and Australia for non-ST-segment-elevation myocardial infarction. In total, 5219 participants were assessed for eligibility. Sixty-three patients were excluded for missing LOS, and 2938 were excluded because of no non-ST-segment-elevation myocardial infarction diagnosis. In total, 2218 participants were analyzed (66% women; mean±SD age, 48.5±7.9 years; 67.8% in the United States). Individuals with longer LOS (51%) were more likely to be White race, were more likely to have diabetes, hypertension, and a lower income, and were less likely to be employed and have completed secondary education. No univariate association between sex and LOS was observed. In the adjusted multivariable model, age (0.62 d/10 y; P<0.001), unemployment (0.63 days; P=0.01), and some of countries included relative to Canada (Italy, 4.1 days; Spain, 1.7 days; and the United States, -1.0 days; all P<0.001) were independently associated with longer LOS. Medical history mediated the effect of employment on LOS. No interaction between sex and employment was observed. Longer LOS was associated with increased 12-month all-cause mortality. Conclusions Older age, unemployment, and country of hospitalization were independent predictors of LOS, regardless of sex. Individuals employed with non-ST-segment-elevation myocardial infarction were more likely to experience shorter LOS. Sociocultural factors represent a potential target for improvement in health care expenditure and resource allocation.

When women win, we all win-Call for a gendered global NCD agenda

Gender is a social determinant of health, interacting with other factors such as income, education, and housing and affects health care access and health care outcomes. This paper reviews key literature and policies on health disparities and gender disparities within health. It examines noncommunicable disease (NCD) health outcomes through a gender lens and challenges existing prevailing measures of success for NCD outcomes that focus primarily on mortality. Chronic respiratory disease, one of the four leading contributors to NCD mortality, is highlighted as a case study to demonstrate the gender gap. Women have different risk factors and higher morbidity for chronic respiratory disease compared to men but morbidity is shadowed by a penultimate research focus on mortality, which results in less attention to the gap in women's NCD outcomes. This, in turn, affects how resources, programs, and interventions are implemented. It will likely slow progress in reducing overall NCD burden if we do not address risk factors in an equitable fashion. The article closes with recommendations to address these gender gaps in NCD outcomes. At the policy level, increasing representation and inclusion in global public health leadership, prioritizing NCDs among marginalized populations by global health societies and political organizations, aligning the gendered global NCD agenda with other well-established movements will each catalyze change for gender-based disparities in global NCDs specifically. Lastly, incorporating gender-based indicators and targets in major NCD-related goals and advancing gender-based NCD research will strengthen the evidence base for women's unique NCD risks and health outcomes.

The prevalence of risk factors and pattern of obstructive coronary artery disease in young Indians (< 45 years) undergoing percutaneous coronary intervention: A gender-based multi-center study

Objectives

In a retrospective study, we aimed to explore the prevalence of risk factors and trends of obstructive coronary artery disease (CAD) in Indian females <45 years of age compared to males of the same age group who underwent percutaneous coronary intervention (PCI).

Materials and Methods

This was a retrospective, observational, multi-centre study of young Indian females and males (<45 years) who underwent PCI as per the guidelines at three high-volume centres in India.

Results

In a group of 3656 patients under the age of 45 who had PCI, 3.1% of those with obstructive CAD were young women (n = 113), while 6.9% were young men (n = 254). Traditional risk factors such as hypertension (p = 0.73), diabetes (p = 0.61), and family history of premature CAD (p = 0.63) were equally common in both genders, whereas dyslipidaemia (p < 0.001), overweight (p < 0.006), smoking (p = 0.004) and, alcoholism (p < 0.001) were more common in young males. Acute coronary syndrome was the most common clinical presentation. Single-vessel disease was common, with the involvement of the left anterior descending artery as the most common angiographic feature. The prevalence of cardiogenic shock was 4.4% in females and 4.1% in males, while the in-hospital mortality rate was 1.77% in young females and 2% in young males.

Conclusions

Obstructive CAD in young men and women accounted for 10% of all CAD cases requiring PCI. Although men account for the majority of patients, CAD in women under the age of 45 is not uncommon. Traditional risk factors are becoming more prevalent in younger women.

Heterogenicity of diabetes as a risk factor for all-cause mortality after acute myocardial infarction: Age and sex impact

AIM

Type 2 diabetes mellitus (T2DM) is a risk factor for mortality after acute myocardial infarction (AMI). We studied the impact of T2DM related to sex and age on post-AMI long-term mortality.

METHODS

A retrospective study included post-AMI patients. Data were obtained from electronic medical records. We defined the study groups by T2DM, stratified by age-sex.

OUTCOME

up-to-10 years post-discharge all-cause mortality.

RESULTS

16,168 patients were analyzed, 40.3% had T2DM. Ten-year mortality rates were 50.3% with T2DM vs. 33.1% without T2DM, adjHR = 1.622 (p < 0.001). Females (adjHR = 1.085, p = 0.052) and increased age (adjHR = 1.056 for one-year increase, p < 0.001) were associated with a higher risk of mortality (borderline statistical significance for sex). The relationship between T2DM and mortality was stronger in females than in males at < 50 and 60-69 years (p-for-interaction 0.025 and 0.009 respectively), but not for other age groups.

CONCLUSIONS

The study implies heterogeneity in the impact of T2DM on mortality of post-AMI patients, being greater among young patients, particularly females, and no significant impact in octogenarians. That implies that young women with T2DM should have advanced measures for early detection of coronary artery disease and tight control of cardiovascular risk factors to lower the propensity to develop AMI.

Sex-specific differences and long-term outcome of patients with coronary artery disease and chronic kidney disease: the Coronary Artery Disease and Renal Failure (CAD-REF) Registry

BACKGROUND

Cardiovascular morbidity and mortality are closely linked to chronic kidney disease (CKD). Sex-specific long-term outcome data of patients with coronary artery disease (CAD) and CKD are scarce.

METHODS

In the prospective observational multicenter Coronary Artery Disease and REnal Failure (CAD-REF) Registry, 773 (23.1%) women and 2,579 (76.9%) men with angiographically documented CAD and different stages of CKD were consecutively enrolled and followed for up to 8 years. Long-term outcome was evaluated using survival analysis and multivariable Cox-regression models.

RESULTS

At enrollment, women were significantly older than men, and suffered from more comorbidities like CKD, hypertension, diabetes mellitus, and multivessel coronary disease. Regarding long-term mortality, no sex-specific differences were observed (Kaplan-Meier survival estimates: 69% in women vs. 69% in men, plog-rank = 0.7). Survival rates decreased from 89% for patients without CKD at enrollment to 72% for patients with CKD stages 1-2 at enrollment and 49% for patients with CKD stages 3-5 at enrollment (plog-rank < 0.001). Cox-regression analysis revealed that sex or multivessel coronary disease were no independent predictors of long-term mortality, while age, CKD stages 3-5, albumin/creatinine ratio, diabetes, valvular heart disease, peripheral artery disease, and left-ventricular ejection fraction were predictors of long-term mortality.

CONCLUSIONS

Sex differences in CAD patients mainly exist in the cardiovascular risk profile and the extent of CAD. Long-term mortality was not depended on sex or multivessel disease. More attention should be given to treatment of comorbidities such as CKD and peripheral artery disease being independent predictors of death. Clinical Trail Registration ClinicalTrials.gov Identifier: NCT00679419.

Prediction of recurrent event in patients with coronary heart disease: the EUROASPIRE Risk Model

AIMS

Most patients with established atherosclerotic cardiovascular disease (CVD) are at very high risk for developing recurrent events. Since this risk varies a lot between patients there is a need to identify those in whom an even more intensive secondary prevention strategy should be envisaged. Using data from the EUROASPIRE IV and V cohorts of coronary heart disease (CHD) patients from 27 European countries, we aimed at developing and internally and externally validating a risk model predicting recurrent CVD events in patients aged < 75 years.

METHODS AND RESULTS

Prospective data were available for 12 484 patients after a median follow-up time of 1.7 years. The primary endpoint, a composite of fatal CVD or new hospitalizations for non-fatal myocardial infarction (MI), stroke, heart failure, coronary artery bypass graft, or percutaneous coronary intervention (PCI), occurred in 1424 patients. The model was developed based on data from 8000 randomly selected patients in whom the association between potential risk factors and the incidence of the primary endpoint was investigated. This model was then validated in the remaining 4484 patients. The final multivariate model revealed a higher risk for the primary endpoint with increasing age, a previous hospitalization for stroke, heart failure or PCI, a previous diagnosis of peripheral artery disease, self-reported diabetes and its glycaemic control, higher non-high-density lipoprotein cholesterol, reduced renal function, symptoms of depression and anxiety and living in a higher risk country. The model demonstrated excellent internal validity and proved very adequate in the validation cohort. Regarding external validity, the model demonstrated good discriminative ability in 20 148 MI patients participating in the SWEDEHEART register. Finally, we developed a risk calculator to estimate risks at 1 and 2 years for patients with stable CHD.

CONCLUSION

In patients with CHD, fatal and non-fatal rates of recurrent CVD events are high. However, there are still opportunities to optimize their management in order to prevent further disease or death. The EUROASPIRE Risk Calculator may be of help to reach this goal.

Inequalities and Deteriorations in Cardiovascular Health in Premenopausal US Women, 1990-2016

Coronary heart disease (CHD) mortality rates in the United States have declined by up to two thirds in recent decades. Closer examination of these trends reveals substantial inequities in the distribution of mortality benefits. It is worrying that the uneven distribution of CHD that exists from lowest to highest social class-the social gradient-has become more pronounced in the United States since 1990 and is most pronounced for women.Here we consider ways in which this trend disproportionately affects premenopausal women aged 35 to 54 years. We apply a social determinants of health framework focusing on intersecting axes of inequalities-notably gender, class, ethnicity, geographical location, access to wealth, and class-among other power relations to which young and middle-aged women are especially vulnerable, and we argue that increasing inequalities may be driving these unprecedented deteriorations. We conclude by discussing interventions and policies to target and alleviate inequality axes that have potential to promote greater equity in the distribution of CHD mortality and morbidity gains.The application of this framework in the context of women's cardiovascular health can help shed light regarding why we are seeing persistently poorer outcomes for premenopausal US women.

Adherence to Treatment of Female Patients With Coronary Heart Disease After a Percutaneous Coronary Intervention

BACKGROUND

Adherence to treatment is essential to prevent the progression of coronary heart disease (CHD), which is the most common cause of death among women. Coronary heart disease in women has special characteristics: the conventional risk factors are more harmful to women than men, accumulation of risk factors is common, and women have nontraditional risk factors such as gestational diabetes and preeclampsia. In addition, worse outcomes, higher incidence of death, and complications after percutaneous coronary intervention have been reported more often among females than among male patients.

OBJECTIVE

The aim of this study was to test a model of adherence to treatment among female patients with CHD after a percutaneous coronary intervention.

METHODS

A cross-sectional, descriptive, and explanatory survey was conducted in 2013 with 416 patients with CHD, of which the 102 female patients were included in this substudy. Self-reported instruments were used to assess female patient adherence to treatment. Data were analyzed using descriptive statistics and a structural equation model.

RESULTS

Motivation was the strongest predictor for female patients' perceived adherence to treatment. Informational support, physician support, perceived health, and physical activity were indirectly, but significantly, associated with perceived adherence to treatment via motivation. Furthermore, physical activity was positively associated with perceived health, whereas anxiety and depression were negatively associated with it.

CONCLUSIONS

Secondary prevention programs and patient education have to take into account individual or unique differences. It is important to pay attention to issues that are known to contribute to motivation rather than to reply on education alone to improve adherence.

Anger and Coronary Artery Disease in Women Submitted to Coronary Angiography: A 48-Month Follow-Up

Background

Anger control was significantly lower in patients with coronary artery disease (CAD), regardless of traditionally known risk factors, occurrence of prior events or other anger aspects in a previous study of our research group.

Objective

To assess the association between anger and CAD, its clinical course and predictors of low anger control in women submitted to coronary angiography.

Methods

This is a cohort prospective study. Anger was assessed by use of Spielberger’s State-Trait Anger Expression Inventory (STAXI). Women were consecutively scheduled to undergo coronary angiography, considering CAD definition as ≥ 50% stenosis of one epicardial coronary artery.

Results

During the study, 255 women were included, being divided into two groups according to their anger control average (26.99). Those with anger control below average were younger and had a family history of CAD. Patients were followed up for 48 months to verify the occurrence of major cardiovascular events.

Conclusion

Women with CAD undergoing coronary angiography had lower anger control, which was associated with age and CAD family history. On clinical follow-up, event-free survival did not significantly differ between patients with anger control above or below average.

Gender-Related Particularities in Acute Myocardial Infarction – a Study on a Patient Cohort from North East Romania

Introduction: Cardiovascular disease is the leading cause of death among women irrespective of race or ethnicity, and about half of these deaths are caused by coronary artery disease. Several studies have reported that cardiovascular diseases manifest themself with a delay of about 7–10 years in women and that they have higher in-hospital mortality. It has not yet been established whether female gender itself, through biological and sociocultural differences, represents a risk factor for early in-hospital mortality in ST-segment elevation acute myocardial infarction (STEMI). The aim of our study was to identify the angiographic particularities in women with STEMI from North East Romania.

Material and Methods: For one year, 207 (31.7%) women and 445 (68.3%) men diagnosed with acute myocardial infarction were hospitalized in the Cardiology Clinic of the “Prof. Dr. George I. M. Georgescu” Institute of Cardiovascular Diseases in Iași, Romania.

Results: The highest incidence of symptom onset was between 6:00 a.m. and 12:00 a.m., this morning polarization being more obvious in women. Within the first two hours of admission to the hospital, coronary angiography was performed in 78.1% of men and only 67.3% of women, the difference being statistically significant (p <0.05). We found that a large number of women had multivascular coronary disease (47.9% vs. 42.3%). At the same time, we found that left main disease and multivascular disease were more frequent in women than in men (3.8% vs. 0.7%, p = 0.001 for left main plus two-vessel disease, and 19.4% vs. 14.8%, p = 0.0005 for three-vessel disease).

Conclusions: In women, coronary events began more frequently in the morning, with atypical symptoms; also, fewer women presented to the hospital within the first 12 hours after the onset of the acute event. Compared to men, women from North East Romania present a higher incidence of multivascular atherosclerotic coronary lessions, indicating a higher severity of STEMI in the female population from this geographical area.

The effects of percutaneous transluminal coronary intervention on biomarkers of oxidative stress in the erythrocytes of elderly male patients

OBJECTIVES

Oxidative stress plays a key role in the pathogenesis of coronary artery disease. The aim of this study was to compare the effects of percutaneous transluminal coronary angioplasty (PTCA) and elective coronary angiography (EC) on erythrocytic antioxidant defense in elderly male patients.

METHODS

Twenty-three stable angina pectoris (SAP) patients undergoing PTCA and 18 patients with ischemic symptoms scheduled to undergo diagnostic EC were included in the study. The concentrations of malondialdehyde (MDA) and reduced glutathione (GSH) and the activities of Zn,Cu-superoxide dismutase (SOD-1), catalase (CAT), and cytosolic glutathione peroxidase (GSH-Px) were examined in the erythrocytes before, immediately after and 2 weeks following PTCA or EC.

RESULTS

The MDA concentrations were significantly higher and SOD-1, CAT, and GSH-Px activities were significantly lower in the PTCA group than in the EC group at baseline. Two weeks after treatment, the activities of the enzymes significantly increased in both groups, whereas the MDA concentrations decreased only in the PTCA patients.

CONCLUSIONS

The results confirm that an advanced state of atherosclerosis is related to greater levels of oxidative stress. The study indicates that both procedures may induce antioxidant defenses; however, PTCA exclusively induces a long-term reduction in lipid peroxidation.

[Management of NSTEMI in a hospital without interventional cardiology and without use of GRACE score: Does the clinician appreciation match the GRACE score calculated retrospectively for the coronarography delay?]

PURPOSE

The management of non-ST segment elevation acute coronary syndromes (NSTEACS) remains an issue for mobidity, mortality, and an economic stake. The first aim of the study was to evaluate the additional value of the GRACE score for the compliance with the recommended times to coronary angiography in an hospital without interventional cardiology. We also analysed the in-hospital and 6-month mortality and the predictive factors of compliance for the coronarography delays.

METHODS

Retrospective monocenter cross-sectional study including consecutive patients with chest pain suggestive of a NSTEACS during 1 year. Data of the delay to coronarography were collected and GRACE score was calculated a posteriori.

RESULTS

The time to perform coronary angiography was non-compliant in 49% of cases (27 patients out of 55). The calculation of the GRACE score would have allowed correcting the delay for two patients of our cohort. Clinical appreciation, troponin elevation, ECG modifications were associated with the delay compliance. Age <75 years predisposed to recommended delays. Renal failure and history of coronaropathy were significantly associated with non compliant delays. A non-compliant delay was significantly associated with higher mortality.

CONCLUSION

In our experience, the knowledge of the GRACE score had little impact on the timing of coronary angiography. However, as a predictor of mid and long term mortality, GRACE score remains SCA ST+ useful to intensify surveillance of high-risk patients.

Diabetes as a risk factor for acute coronary syndrome in women compared with men: a meta-analysis, including 10 856 279 individuals and 106 703 acute coronary syndrome events

BACKGROUND

Diabetes mellitus is a significant cause of death and disability worldwide and is a strong risk factor for acute coronary syndrome (ACS). Whether diabetes confers the same excess risk of ACS in both sexes is unknown. Therefore, we undertook a meta-analysis to estimate the relative risk (RR) for ACS associated with diabetes in men and women.

METHODS

We systematically searched PubMed, Embase, and Cochrane Library databases for both case-control and cohort studies published between January 1, 1966, and January 1, 2015. Studies were included if they reported sex-specific estimates of the RR, hazard ratio, or odds ratio for the association between diabetes and ACS. We pooled the sex-specific RR and the ratio between women and men using a random-effect model with inverse-variance weighting.

RESULTS

We included 9 case-control and 10 cohort studies with data for 10 856 279 individuals and at least 106 703 fatal and nonfatal ACS events. The pooled maximum-adjusted RR of ACS associated with diabetes was 2.46 (95% CI, 1.92-3.17) in women and 1.68 (95% CI, 1.39-2.04) in men. In patients with diabetes compared with those without diabetes, women had a significantly greater risk of ACS-the pooled women-to-men RR and the ratio of relative risks was 1.38 (95% CI, 1.25-1.52; P < .001), with no evidence of publication bias.

CONCLUSIONS

The excess risk of ACS associated with diabetes is significantly higher in women than in men. This finding may be explained by more adverse cardiovascular risk profiles and suggests that further work is needed to clarify the relevant biological, behavioural, and social mechanisms.

Vascular or chronological age: which is the better marker to estimate the cardiovascular risk in patients with type 1 diabetes?

AIMS

To evaluate whether using vascular age (VA) instead of chronological age (CA) in the Framingham score would enhance the cardiovascular disease (CVD) risk estimation in patients with type 1 diabetes (T1D).

METHODS

This was a cross-sectional study comprising 58 T1D patients and 38 control subjects matched by age, gender and body mass index. To estimate the VA, we used carotid intima-media thickness normality estimation tables that took into account age, gender and ethnic group.

RESULTS

Compared to the control group, T1D patients had an older VA with an 8.8-year difference (p < 0.001), a higher CVD risk stratification comparing CA and VA (p < 0.001). In the group of T1D patients, there was a 9.4-year difference between VA and CA (p < 0.001), mainly due to a greater increase in women compared to men (11.2 vs 6.4 years, respectively) and 29.3 % of the patients with T1D increased their CVD risk stratification using VA as a parameter. Still, in the group of T1D patients, women had a higher increase in VA for each 1-year increase in CA than men (1.2 years vs 0.8 years, respectively, p < 0.001). This difference persisted as we compared women with T1D with women in the control group (0.4 years), p = 0.006.

CONCLUSIONS

T1D patients have an increased VA, a marker of subclinical atherosclerosis. The use of VA age may contribute to the identification of high CVD risk in T1D. In patients with T1D, a younger chronological age, particularly in women, might not be a protective factor for CVD.

Pain experiences of men and women after cardiac surgery

AIMS AND OBJECTIVES

To compare the prevalence and severity of pain in men and women during the first year following cardiac surgery and to examine the predictors of persistent postoperative pain 12 months post surgery.

BACKGROUND

Persistent pain has been documented after cardiac surgery, with limited evidence for differences between men and women.

DESIGN

Prospective cohort study of patients in a randomised controlled trial (N = 416, 23% women) following cardiac surgery.

METHODS

Secondary data analysis of data collected prior to surgery, across postoperative days 1-4, at two weeks, and at one, three, six and 12 months post surgery. The main outcome was worst pain intensity (Brief Pain Inventory-Short Form).

RESULTS

Twenty-nine percent (97/339) of patients reported persistent postoperative pain at rest at 12 months that was worse in intensity and interference for women than for men. For both sexes, a more severe co-morbidity profile, lower education and postoperative pain at rest at one month post surgery were associated with an increased probability for persistent postoperative pain at 12 months. Women with more concerns about communicating pain and a lower intake of analgesics in the hospital had an increased probability of pain at 12 months.

CONCLUSION

Sex differences in pain are present up to one year following cardiac surgery. Strategies for sex-targeted pain education and management pre- and post-surgery may lead to better pain outcomes.

RELEVANCE TO CLINICAL PRACTICE

These results suggest that informing patients (particularly women) about the benefits of analgesic use following cardiac surgery may result in less pain over the first year post discharge.

Sex Versus Gender-Related Characteristics: Which Predicts Outcome After Acute Coronary Syndrome in the Young?

BACKGROUND

"Gender" reflects social norms for women and men, whereas "sex" defines biological characteristics. Gender-related characteristics explain some differences in access to care for premature acute coronary syndrome (ACS); whether they are associated with cardiovascular outcomes is unknown.

OBJECTIVES

This study estimated associations between gender and sex with recurrent ACS and major adverse cardiac events (MACE) (e.g., ACS, cardiac mortality, revascularization) over 12 months in patients with ACS.

METHODS

We studied 273 women and 636 men age 18 to 55 years from GENESIS-PRAXY (GENdEr and Sex determInantS of cardiovascular disease: from bench to beyond-Premature Acute Coronary SYndrome), a prospective observational cohort study, who were hospitalized for ACS between January 2009 and April 2013. Gender-related characteristics (e.g., social roles) were assessed using a self-administered questionnaire, and a composite measure of gender was derived. Outcomes included recurrent ACS and MACE over 12 months.

RESULTS

Feminine roles and personality traits were associated with higher rates of recurrent ACS and MACE compared with masculine characteristics. This difference persisted for recurrent ACS, after multivariable adjustment (hazard ratio from score 0 to 100: 4.50; 95% confidence interval: 1.05 to 19.27), and was a nonstatistically significant trend for MACE (hazard ratio: 1.54; 95% confidence interval: 0.90 to 2.66). A possible explanation is increased anxiety, the only condition that was more prevalent in patients with feminine characteristics and that rendered the association between gender and recurrent ACS nonstatistically significant (hazard ratio: 3.56; 95% confidence interval: 0.81 to 15.61). Female sex was not associated with outcomes post-ACS.

CONCLUSIONS

Younger adults with ACS with feminine gender are at an increased risk of recurrent ACS over 12 months, independent of female sex.

Revascularization Treatment of Emergency Patients with Acute ST-Segment Elevation Myocardial Infarction in Switzerland: Results from a Nationwide, Cross-Sectional Study in Switzerland for 2010-2011

BACKGROUND

Cardiovascular diseases are the leading cause of death worldwide and in Switzerland. When applied, treatment guidelines for patients with acute ST-segment elevation myocardial infarction (STEMI) improve the clinical outcome and should eliminate treatment differences by sex and age for patients whose clinical situations are identical. In Switzerland, the rate at which STEMI patients receive revascularization may vary by patient and hospital characteristics.

AIMS

To examine all hospitalizations in Switzerland from 2010-2011 to determine if patient or hospital characteristics affected the rate of revascularization (receiving either a percutaneous coronary intervention or a coronary artery bypass grafting) in acute STEMI patients.

DATA AND METHODS

We used national data sets on hospital stays, and on hospital infrastructure and operating characteristics, for the years 2010 and 2011, to identify all emergency patients admitted with the main diagnosis of acute STEMI. We then calculated the proportion of patients who were treated with revascularization. We used multivariable multilevel Poisson regression to determine if receipt of revascularization varied by patient and hospital characteristics.

RESULTS

Of the 9,696 cases we identified, 71.6% received revascularization. Patients were less likely to receive revascularization if they were female, and 80 years or older. In the multivariable multilevel Poisson regression analysis, there was a trend for small-volume hospitals performing fewer revascularizations but this was not statistically significant while being female (Relative Proportion = 0.91, 95% CI: 0.86 to 0.97) and being older than 80 years was still associated with less frequent revascularization.

CONCLUSION

Female and older patients were less likely to receive revascularization. Further research needs to clarify whether this reflects differential application of treatment guidelines or limitations in this kind of routine data.

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

Cardiovascular disease is the leading cause of mortality in American women. Since 1984, the annual cardiovascular disease mortality rate has remained greater for women than men; however, over the last decade, there have been marked reductions in cardiovascular disease mortality in women. The dramatic decline in mortality rates for women is attributed partly to an increase in awareness, a greater focus on women and cardiovascular disease risk, and the increased application of evidence-based treatments for established coronary heart disease. This is the first scientific statement from the American Heart Association on acute myocardial infarction in women. Sex-specific differences exist in the presentation, pathophysiological mechanisms, and outcomes in patients with acute myocardial infarction. This statement provides a comprehensive review of the current evidence of the clinical presentation, pathophysiology, treatment, and outcomes of women with acute myocardial infarction.

Long-term outcomes for women versus men with unstable angina/non-ST-segment elevation myocardial infarction managed medically without revascularization: insights from the TaRgeted platelet Inhibition to cLarify the Optimal strateGy to medicallY manage Acute Coronary Syndromes trial

BACKGROUND

Women with acute coronary syndromes (ACS) are less likely to undergo invasive revascularization than men, but sex-specific differences in long-term outcomes and platelet reactivity among medically managed ACS patients remain uncertain. We examined sex-specific differences in long-term ischemic and bleeding outcomes and platelet reactivity for medically managed ACS patients randomized to prasugrel versus clopidogrel plus aspirin.

METHODS

Data from 9,326 patients enrolled in TRILOGY ACS were analyzed to determine differences in long-term ischemic and bleeding outcomes between women (n = 3,650 [39%]) and men (n = 5,676 [61%]) randomized to prasugrel 10 mg/d (5 mg/d for patients ≥75 years and/or <60 kg) versus clopidogrel 75 mg/d. Sex-specific differences in 30-day platelet reactivity were analyzed in 2,564 (27%) patients participating in a platelet function substudy.

RESULTS

Compared with men, women were older, weighed less, were less likely to have prior myocardial infarction or revascularization, and had lower baseline creatinine clearance and hemoglobin level values. Rates of the composite of cardiovascular death/myocardial infarction/stroke (20.2% vs 19.1%; P = .56), all-cause mortality (12.2% vs 11.7%; P = .88), and Global Use of Strategies to Open Occluded Arteries severe/life-threatening/moderate bleeding (3.8% vs 2.8%; P = .74) through 30 months were similar in women versus men. After adjustment, women had significantly lower risk for ischemic outcomes and all-cause mortality. There were no sex-specific, treatment-related differences in 30-day platelet reactivity.

CONCLUSIONS

Long-term ischemic and bleeding outcomes in medically managed ACS patients were similar for women versus men, as was treatment-related platelet reactivity. Women had a higher baseline risk profile and, after adjustment, significantly lower risk of the primary composite end point and all-cause death through 30 months.

A gender-based approach to developing a healthy lifestyle and healthy weight intervention for diverse Utah women

Utah women from some cultural minority groups have higher overweight/obesity rates than the overall population. We utilized a gender-based mixed methods approach to learn about the underlying social, cultural and gender issues that contribute to the increased obesity risk among these women and to inform intervention development. A literature review and analysis of Utah's Behavioral Risk Factor Surveillance System data informed the development of a focus group guide. Focus groups were conducted with five groups of women: African immigrants from Burundi and Rwanda, African Americans, American Indians/Alaskan Natives, Hispanics/Latinas, and Pacific Islanders. Six common themes emerged: (1) health is multidimensional and interventions must address health in this manner; (2) limited resources and time influence health behaviors; (3) norms about healthy weight vary, with certain communities showing more preference to heavier women; (4) women and men have important but different influences on healthy lifestyle practices within households; (5) women have an influential role on the health of families; and (6) opportunities exist within each group to improve health. Seeking insights from these five groups of women helped to identify common and distinct cultural and gender themes related to obesity, which can be used to help elucidate core obesity determinants.

Influence of gender on the risk of death and adverse events in patients with acute myocardial infarction undergoing pharmacoinvasive strategy

Pharmacoinvasive treatment is an acceptable alternative for patients with ST-segment elevation myocardial infarction (STEMI) in developing countries. The present study evaluated the influence of gender on the risks of death and major adverse cardiovascular events (MACE) in this population. Seven municipal emergency rooms and the Emergency Mobile Healthcare Service in São Paulo treated STEMI patients with tenecteplase. The patients were subsequently transferred to a tertiary teaching hospital for early (<24 h) coronary angiography. A total of 469 patients were evaluated [329 men (70.1%)]. Compared to men, women had more advanced age (60.2 ± 12.3 vs. 56.5 ± 11 years; p = 0.002); lower body mass index (BMI; 25.85 ± 5.07 vs. 27.04 ± 4.26 kg/m2; p = 0.009); higher rates of hypertension (70.7 vs. 59.3%, p = 0.02); higher incidence of hypothyroidism (20.0 vs. 5.5%; p < 0.001), chronic renal failure (10.0 vs. 8.8%; p = 0.68), peripheral vascular disease (PVD; 19.3 vs. 4.3%; p = 0.03), and previous history of stroke (6.4 vs. 1.3%; p = 0.13); and higher thrombolysis in myocardial infarction risk scores (40.0 vs. 23.7%; p < 0.001). The overall in-hospital mortality and MACE rates for women versus men were 9.3 versus 4.9% (p = 0.07) and 12.9 versus 7.9% (p = 0.09), respectively. By multivariate analysis, diabetes (OR 4.15; 95% CI 1.86-9.25; p = 0.001), previous stroke (OR 4.81; 95% CI 1.49-15.52; p = 0.009), and hypothyroidism (OR 3.75; 95% CI 1.44-9.81; p = 0.007), were independent predictors of mortality, whereas diabetes (OR 2.05; 95% CI 1.03-4.06; p = 0.04), PVD (OR 2.38; 95% CI 0.88-6.43; p = 0.08), were predictors of MACE. In STEMI patients undergoing pharmacoinvasive strategy, mortality and MACE rates were twice as high in women; however, this was due to a higher prevalence of risk factors and not gender itself.

Sex differences in epidemiology and risk factors of acute coronary syndrome in Chinese patients with type 2 diabetes: a long-term prospective cohort study

Objective

Diabetic patients with acute coronary syndrome (ACS) are at higher risk of poor outcome than are non-diabetic patients with ACS. Few studies have focused on sex-related ACS incidence, ACS-related mortality or risk factors to affects sex specific ACS in Chinese with Type 2 diabetes mellitus (T2DM). Based on a hospital-based cohort of Chinese patients with T2DM, we aimed to investigate whether there was sex difference in ACS or ACS-related mortality or risk factors of ACS.

Methods

Totally 2,135 Hong Kong Chinese with T2DM were recruited during 1994-1996 and followed up until August 2012. We systematically analyzed sex-related ACS incidence and ACS-related mortality and risk factors with χ²-squared test, descriptive statistics and survival analysis.

Results

Regular follow-up was completed in 2,105 subjects (98.6%), with a median period of 14.53 years. The occurrence of ACS was recorded among 414 patients (19.7%) and ACS-related death among 104 patients (4.9%). ACS incidences increased with age in both men and women, and men had a higher prevalence of ACS than women across different age categories and different follow-up periods (log rank χ²=20.32, P<0.001). The transition of ACS incidences from slow to rapid increase were about 5 years earlier in men (at 51-55 years) than in women (55-60 years). Among ACS patients, cumulative ACS-related mortalities was similar between men and women (log rank χ²=0.063, P=0.802). Besides age and albuminuria, different profiles of risk factors accounted for the occurrence of ACS between men and women.

Conclusions

Our findings demonstrated sex differences in ACS incidence and risk factors, but not in ACS-related mortality in Chinese patients withT2DM. These findings suggest that screening and prevention campaigns should be optimized for men and women, which may help to identify diabetic patients at higher risk of coronary heart disease.

Long-term outcome in men and women after CABG; results from the IMAGINE trial

BACKGROUND

The aim of this study is to determine sex differences in long-term outcome after coronary artery bypass grafting (CABG).

METHODS

The international randomized controlled IMAGINE study included 2553 consecutive patients with a left ventricular ejection fraction of >40% who underwent isolated CABG. Median follow-up was 32 months (IQR 17-42 months). The composite endpoint comprised of death, myocardial infarction (MI), cerebrovascular event, angina, revascularization and congestive heart failure. Cox regression analysis was used to examine sex differences in outcome post-CABG.

RESULTS

Of the 2553 patients, 2229 were men and 324 (13%) were women. Women were older and more often reported diabetes and hypertension. Smoking and impaired renal function were more prevalent in men. Women experienced a higher event rate during follow-up (composite endpoint 18% vs 12%; P = 0.007). Cox regression showed an increased risk of the composite endpoint in women after adjustment for age (HR 1.48 (95% CI: 1.11-1.97)) which was non-significant after additional adjustment for other confounders (HR 1.26 (95% CI: 0.92-1.72)).

CONCLUSION

Women have a worse long-term outcome after CABG than men in univariate analysis. However, after adjusting for potential confounders female sex became a non-significant predictor for prognosis, possibly due to the small sample size of women. Definite answers regarding sex-differences in long-term outcome after CABG should come from future pooling of studies comprising a larger number of women.

Epidemiology, risk factors and management of cardiovascular diseases in IBD

IBD is an established risk factor for venous thromboembolism. In the past few years, studies have suggested that patients with IBD might also be at an increased risk of coronary heart disease and stroke. The increased risk is thought to be similar to the level of risk seen in patients with other chronic systemic inflammatory diseases such as rheumatoid arthritis. The risk of developing these conditions is particularly increased in young adults with IBD, and more so in women than in men. Conventional cardiovascular risk factors are not over-represented in patients with IBD, so the increased risk could be attributable to inflammation-mediated atherosclerosis. Patients with IBD often have premature atherosclerosis and have biochemical and genetic markers similar to those seen in patients with atherosclerotic cardiovascular disease. The role of chronic inflammation in IBD-associated cardiovascular disease merits further evaluation. Particular attention should be given to the increased risk observed during periods of increased disease activity and potential modification of the risk by immunosuppressive and biologic therapies for IBD that can modify the disease activity. In addition, preclinical studies suggest that cardiovascular medications such as statins and angiotensin-converting enzyme inhibitors might also favourably modify IBD disease activity, which warrants further evaluation.

Gender differences in presentation, management and inhospital outcome in patients with ST-segment elevation myocardial infarction: data from 5000 patients included in the ORBI prospective French regional registry

BACKGROUND

Gender differences in presentation, management and outcome in patients with ST-segment elevation myocardial infarction (STEMI) have been reported.

AIM

To determine whether female gender is associated with higher inhospital mortality.

METHODS

Data from ORBI, a regional STEMI registry of 5 years' standing, were analysed. The main data on presentation, management, inhospital outcome and prescription at discharge were compared between genders. Various adjusted hazard ratios were then calculated for inhospital mortality (women versus men).

RESULTS

The analysis included 5000 patients (mean age 62.6±13 years), with 1174 women (23.5%). Women were on average 8 years older than men, with more frequent co-morbidities. Median ischaemia time was 215 minutes (26 minutes longer in women; P<0.05). Reperfusion strategies in women less frequently involved fibrinolysis, coronary angiography, radial access and thrombo-aspiration. Female gender, especially in patients aged<60 years, was associated with poorer inhospital prognosis (including higher inhospital mortality: 9% vs. 4% in men; P<0.0001), and underutilization of recommended treatments at discharge. Moreover, excess female inhospital mortality was independent of presentation, revascularization time and reperfusion strategy (hazard ratio for women 1.33, 95% confidence interval 1.01-1.76; P=0.04).

CONCLUSIONS

One in four patients admitted for STEMI was female, with significant differences in presentation. Female gender was associated with less-optimal treatment, both in the acute-phase and at discharge. Efforts should be made to reduce these differences, especially as female gender was independently associated with an elevated risk of inhospital mortality.

Sex-related differences in access to care among patients with premature acute coronary syndrome

BACKGROUND

Access to care may be implicated in disparities between men and women in death after acute coronary syndrome, especially among younger adults. We aimed to assess sex-related differences in access to care among patients with premature acute coronary syndrome and to identify clinical and gender-related determinants of access to care.

METHODS

We studied 1123 patients (18-55 yr) admitted to hospital for acute coronary syndrome and enrolled in the GENESIS-PRAXY cohort study. Outcome measures were door-to-electrocardiography, door-to-needle and door-to-balloon times, as well as proportions of patients undergoing cardiac catheterization, reperfusion or nonprimary percutaneous coronary intervention. We performed univariable and multivariable logistic regression analyses to identify clinical and gender-related determinants of timely procedures and use of invasive procedures.

RESULTS

Women were less likely than men to receive care within benchmark times for electrocardiography (≤ 10 min: 29% v. 38%, p = 0.02) or fibrinolysis (≤ 30 min: 32% v. 57%, p = 0.01). Women with ST-segment elevation myocardial infarction (MI) were less likely than men to undergo reperfusion therapy (primary percutaneous coronary intervention or fibrinolysis) (83% v. 91%, p = 0.01), and women with non-ST-segment elevation MI or unstable angina were less likely to undergo nonprimary percutaneous coronary intervention (48% v. 66%, p < 0.001). Clinical determinants of poorer access to care included anxiety, increased number of risk factors and absence of chest pain. Gender-related determinants included feminine traits of personality and responsibility for housework.

INTERPRETATION

Among younger adults with acute coronary syndrome, women and men had different access to care. Moreover, fewer than half of men and women with ST-segment elevation MI received timely primary coronary intervention. Our results also highlight that men and women with no chest pain and those with anxiety, several traditional risk factors and feminine personality traits were at particularly increased risk of poorer access to care.

Characteristics, treatment and one-year outcomes of patients with acute coronary syndrome in a tertiary hospital in India

BACKGROUND

Coronary artery disease (CAD) is a major cause of death in India. Data on outcome of CAD is scarce in the Indian population. This study determined the characteristics, treatment and one-year outcomes of acute coronary syndrome (ACS) in an Indian Cardiac Centre.

METHODS

We carried out a cross sectional retrospective analysis of 1468 ACS patients hospitalized between January 2008 and December 2010 and followed up for 1 year in the Institute of Cardiovascular Diseases, Madras Medical Mission, Chennai. Mortality at 1 year, its determinants and 1 year major adverse cardiac events (MACE) were determined.

RESULTS

The patients were aged 62.2 ± 11.2 years; males (75.2%) and had ST segment elevation myocardial infarction (STEMI) (33.9%), non ST segment elevation myocardial infarction (44.2%) and unstable angina (21.9%). Key pharmacotherapy included aspirin (98.2%), clopidogrel (95.1%), statins (95.6%), angiotensin converting enzyme inhibitor/angiotensin receptor blocker (50.6%) and beta blocker (83.1%). Angiography rate was 80.6%. In the STEMI group, 53.3% had primary angioplasty, 20.3% were thrombolysed and 16.1% received sole medical therapy. Overall coronary artery bypass graft rate was 12.4%. At one year, all-cause mortality and composite MACE were 2.5% and 9.7%, respectively. MACE included death (2.5%), reinfarction (4.0%), resuscitated cardiac arrest (1.8%), stroke (1.1%) and bleeding (0.4%). Main factors associated with mortality were combined left ventricular systolic and diastolic dysfunction (OR = 20.0, 95% CI = 6.63-69.4) and positive troponin I (OR = 12.56, 95% CI = 1.78-25.23). Troponin I independently predicted mortality.

CONCLUSIONS

ACS population was older than previously described in India. Evidence-based pharmacotherapy and interventions, and outcomes were comparable to the developed nations.

Age- and gender-specific reference values of pulse wave velocity for African adults: preliminary results

Pulse wave velocity (PWV) is an independent predictor of cardiovascular (CV) risk. Higher PWV values have been observed in Africans; however, there are no established age- and gender-adjusted reference values for this population. Therefore, PWV was measured using a validated device (Complior SP) in 544 subjects recruited from an occupational cohort of employees of a public university in Angola. Since high blood pressure (BP) is an important factor influencing PWV, a subsample of 301 normotensive subjects (aged 22-72 years) was selected for this study. A subset of 131 individuals without CV risk factors was considered the healthy group (HG), while the entire group (n = 301) comprised the less healthy group (LHG). Predictors of PWV were evaluated using multiple regression analyses and age- and gender-specific percentile tables and curves were constructed. Age and PWV means were 36 ± 9.7 years and 6.6 ± 1.0 m/s in the HG, respectively, and 39.9 ± 10.2 years and 7.3 ± 1.3 m/s in the LHG. Age and plasma uric acid (UA) were the only significant PWV predictors in the HG, while age, mean BP (MBP), and gender showed significant prediction of PWV in the multiple regression analysis in the LHG. Age- and gender-adjusted reference values of PWV were provided for healthy and less healthy normotensive Africans. Considering the small sample size of our cohort, these preliminary results should be used cautiously until data on robust sample of the general population can be obtained.

Gender disparities in the presentation, management and outcomes of acute coronary syndrome patients: data from the 2nd Gulf Registry of Acute Coronary Events (Gulf RACE-2)

Background

Gender-related differences in mortality of acute coronary syndrome (ACS) have been reported. The extent and causes of these differences in the Middle-East are poorly understood. We studied to what extent difference in outcome, specifically 1-year mortality are attributable to demographic, baseline clinical differences at presentation, and management differences between female and male patients.

Methodology/Principal Findings

Baseline characteristics, treatment patterns, and 1-year mortality of 7390 ACS patients in 65 hospitals in 6 Arabian Gulf countries were evaluated during 2008–2009, as part of the 2nd Gulf Registry of Acute Coronary Events (Gulf RACE-2). Women were older (61.3±11.8 vs. 55.6±12.4; P<0.001), more overweight (BMI: 28.1±6.6 vs. 26.7±5.1; P<0.001), and more likely to have a history of hypertension, hyperlipidemia or diabetes. Fewer women than men received angiotensin-converting enzyme inhibitors (ACE), aspirin, clopidogrel, beta blockers or statins at discharge. They also underwent fewer invasive procedures including angiography (27.0% vs. 34.0%; P<0.001), percutaneous coronary intervention (PCI) (10.5% vs. 15.6%; P<0.001) and reperfusion therapy (6.9% vs. 20.2%; P<0.001) than men. Women were at higher unadjusted risk for in-hospital death (6.8% vs. 4.0%, P<0.001) and heart failure (HF) (18% vs. 11.8%, P<0.001). Both 1-month and 1-year mortality rates were higher in women than men (11% vs. 7.4% and 17.3% vs. 11.4%, respectively, P<0.001). Both baseline and management differences contributed to a worse outcome in women. Together these variables explained almost all mortality disparities.

Conclusions/Significance

Differences between genders in mortality appeared to be largely explained by differences in prognostic variables and management patterns. However, the origin of the latter differences need further study.

Update on ischemic heart disease and critical care cardiology

This article summarizes the main developments reported during the year 2012 concerning ischemic heart disease, together with the most relevant innovations in the management of acute cardiac patients.

A novel major histocompatibility complex locus confers the risk of premature coronary artery disease in a Chinese Han population

Several novel loci have been proved to be associated with coronary artery disease and/or myocardial infarction risk by genome-wide association studies, however, the available coronary artery disease risk variants explain only a small proportion of the predicted genetic heritability of the disease. Recently, a novel coronary artery disease locus on chromosome 6p21.3 in the major histocompatibility complex was identified in an European population. We hereby investigated whether this single nucleotide polymorphisms (rs3869109) confers the risk of premature coronary artery disease in a Chinese Han population. A total of 422 patients were studied including 210 cases with coronary stenosis ≥50% or previous myocardial infarction (male <55 years and female <65 years) and 212 controls without documented coronary artery disease. Ligase detection reaction was performed to detect rs3869109. The 3 genotypes AA, AG, and GG were present in rs3869109. There were significant differences between the control and premature coronary artery disease groups in the frequencies of the rs3869109 variants and alleles (all P < 0.05). The distribution of 3 genotypes and alleles at rs3869109 does not differ between women and men (all P > 0.05). There was a significant association between rs3869109 genotypes and the severity of premature coronary artery disease (P = 0.038). Multivariate logistic regression showed that carriers with AG and GG genotypes at rs3869109 have a higher risk of premature coronary artery disease than carriers of AA genotype (odds ratio [OR] 1.997, 95% CI: 1.166-3.419, P = 0.012; OR 1.695, 95% CI: 1.044-2.752, P = 0.033; respectively). Our results indicate that the rs3869109 variants are associated with premature coronary artery disease in a Chinese Han population, suggesting this genetic risk marker is useful in early coronary artery disease risk prediction.

Gender-specific combined effects of smoking and hypertension on cardiovascular disease mortality in elderly Koreans: THe Kangwha Cohort Study

OBJECTIVE

We examined gender-specific combined effects of smoking and hypertension on risk of mortality from cardiovascular disease in elderly Korean men and women.

STUDY DESIGN

This study followed a cohort of 6097 residents (2593 men, 3504 women) in the general population of Kangwha County, aged ≥55 years in March 1985 and examined their cause-specific mortality for 20.8 years, up to December 31, 2005. All participants were followed up more than once after the 1985 survey.

MAIN OUTCOME MEASURES

We calculated hazard ratios for mortality for the combined sets of smoking habits and blood pressure levels using the Cox proportional-hazard model. The set of non-smokers with normal blood pressure served as a reference group.

RESULTS

During the 20.8 years of follow-up, 759 people died from cardiovascular disease. The risk of mortality from cardiovascular disease and stroke according to smoking or hypertension was not different between men and women. However, the risk among smokers combined with hypertension was higher in men than in women; the multivariable-adjusted hazard ratios (95% CI) for mortality from cardiovascular disease and stroke were 4.52 (1.67-12.21) and 6.37 (1.57-25.85) in men and 2.11 (1.37-3.24) and 2.41 (1.44-4.01) in women, respectively.

CONCLUSIONS

The magnitude of the joint effects of smoking and hypertension on cardiovascular disease and stroke mortality was different between men and women. This study suggests that combining quitting smoking with lowering blood pressure could contribute to preventing cardiovascular disease and stroke, especially in men.

Association of two variants in the interleukin-6 receptor gene and premature coronary heart disease in a Chinese Han population

Two novel single nucleotide polymorphisms (SNPs; rs7529229 and rs2228145) in the interleukin-6 receptor (IL6R) gene have recently been associated with coronary heart disease (CHD) in a European population. We sought to replicate this finding and to investigate associations of these two SNPs with the severity and clinical phenotypes of premature CHD in a Chinese Han population. A total of 418 patients were studied, including 187 cases with coronary stenosis ≥50 % or acute myocardial infarction (males < 55 years and females < 65 years) and 231 controls without documented CHD. A ligase detection reaction was performed to detect rs7529229 and rs2228145. There were no differences between the controls and premature CHD groups in the frequencies for the three genotypes and alleles of rs7529229 and rs2228145 (all P > 0.05), nor did they differ between the two groups when grouped by gender (all P > 0.05). There were also no associations between these two SNPs and the severity of coronary lesions or clinical phenotypes of premature CHD (all P > 0.05). Our results do not support an association between rs7529229 or rs2228145 with premature CHD in the Chinese Han population. Further studies are warranted to elucidate the role of these two SNPs in the development of atherosclerosis and CHD.