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Luther T Clark

Publications and source records attributed to Luther T Clark.

At least 19 recordsLinked to original sources

Usefulness of the white blood cell count as a predictor of angiographic findings in an unselected population referred for coronary angiography.

There are limited data about the relative importance of the many different but inter-related inflammatory markers with respect to their ability to independently predict the presence and extent of coronary artery disease (CAD). In addition, studies demonstrating such associations have often been conducted in well-defined populations and have excluded patients with or not adjusted for co-morbidities associated with CAD. In a cohort of 389 men who underwent coronary angiography for a variety of clinical indications and across a spectrum of risk, the following inflammatory markers were measured at baseline to determine their relative abilities to predict angiographic outcomes: C-reactive protein, myeloperoxidase, tissue inhibitor of metalloproteinase-1, erythrocyte sedimentation rate, and white blood cell (WBC) count. This analysis was done in the context of traditional CAD risk factors and other co-morbidities associated with CAD (such as morbid obesity, renal dysfunction, heart failure, and so forth). WBC count was the only marker that was independently associated with angiographically documented CAD (p = 0.0184). Further, WBC count (odds ratio 1.31, 95% confidence interval 1.05 to 1.64, p = 0.0157) and plasma myeloperoxidase (odds ratio 1.35, 95% confidence interval 1.08 to 1.69, p = 0.0090) were the only inflammatory markers that were independently predictive of the presence of multivessel disease on coronary angiography. In conclusion, these data demonstrate that a simple baseline WBC count is independently associated with angiographic CAD, and that it can predict the presence of multivessel disease, even in the context of clinical CAD risk factors and other established inflammatory markers.

Aged↗

Adiponectin is an independent predictor of all-cause mortality, cardiac mortality, and myocardial infarction in patients presenting with chest pain.

AIMS: To determine the prognostic value of baseline plasma adiponectin levels in patients with known or suspected coronary artery disease referred for coronary angiography. METHODS AND RESULTS: Adiponectin was measured in 325 male patients with stable angina, troponin-negative unstable angina, and non-ST-segment elevation myocardial infarction (MI) undergoing coronary angiography at a Veterans Administration Medical Center. The patients were then followed prospectively for the occurrence of all-cause mortality, cardiac mortality, and MI. Follow-up data at 24 months were available for 97% of the patients. Adiponectin was the only biomarker to independently predict the individual endpoints of all-cause mortality, cardiac mortality, and MI. The 24-month survival rates for patients in the lower (< or =4.431 mg/L), middle (>4.431 and < or =8.008 mg/L), and upper (>8.008 mg/L) tertiles of plasma adiponectin values were 95.0, 90.4, and 83.5%, respectively (P = 0.0232 by log-rank test). Furthermore, when patients with chest pain were risk-stratified into those with and without a non-ST-segment elevation acute coronary syndrome (NSTEACS), adiponectin remained an independent predictor of both all-cause mortality and cardiac mortality in the NSTEACS subgroup. CONCLUSION: In a cohort of male patients undergoing coronary angiography, a single baseline determination of plasma adiponectin is independently predictive of the subsequent risk of death and MI.

Adiponectin↗

Usefulness of anemia in men as an independent predictor of two-year cardiovascular outcome in patients presenting with acute coronary syndrome.

Anemia has been shown to be an independent risk factor for the development of adverse cardiovascular outcomes in a variety of patient populations. In the case of patients presenting with acute coronary syndrome (ACS), anemia has been demonstrated to be a powerful and independent predictor of 30-day outcomes. However, there are limited and conflicting data about the long-term independent predictive value of anemia in patients with ACS. This is in contrast to non-ACS populations in which anemia has been shown to be an independent predictor of long-term outcomes. The present study investigated the long-term prognostic significance of anemia in a well-characterized cohort of 193 men with ACS who were referred for coronary angiography at a Veterans Affairs Medical Center. All patients were followed prospectively for the development of death or acute myocardial infarction (AMI), and follow-up data were available for all patients at 24 months. After controlling for a variety of baseline clinical, laboratory, and angiographic variables, hemoglobin (analyzed as a continuous variable and as a categorical variable using the World Health Organization cutoff of 13 g/dl for men) was a strong and independent predictor of the composite end point of death or AMI at 24 months when using a Cox proportional hazards model. At 24 months, the event-free survival was 64% in the group with a hemoglobin level < 13 g/dl compared with 81% in the group with a hemoglobin level > or = 13 g/dl (p = 0.0065 by log-rank test). In conclusion, these data demonstrate that baseline anemia is a strong and independent predictor of death or AMI at 2 years in patients with ACS.

Aged↗

Percutaneous coronary intervention in a patient with congenital factor XI deficiency and acquired inhibitor.

BACKGROUND: Factor XI deficiency has been associated with bleeding diathesis mostly secondary to trauma and post-operatively depending on the severity of deficiency. Cases with factor XI deficiency having undergone cardiac surgery and coronary intervention after appropriate replacement therapy have been reported in the past. The presence of inhibitor in factor XI deficiency poses a hematological challenge and literature regarding coronary intervention in such patients is limited. Immunosuppressive therapy, plasma exchange and factor VII product transfusions have been used prior to cardiac interventions in few such reported cases. METHOD: We report our approach in such a case of Percutaneous Transluminal Coronary Angioplasty in a 72-year-old male of Jewish origin who has congenital factor XI deficiency complicated with acquired inhibitor. RESULTS: In some cases, the acuity of the coronary syndrome may mandate immediate coronary intervention. However, patient's history of factor XI deficiency and acquired inhibitor pose a major dilemma of further course of action. We performed percutaneous balloon angioplasty in this case with no anti-coagulant and with favorable outcome. CONCLUSION: Under these circumstances of significant coagulation disorder and based on the case report, we recommend that balloon angioplasty be undertaken with no additional anti-coagulation other than Aspirin.

Aged↗

Impact of completeness of percutaneous coronary intervention revascularization on long-term outcomes in the stent era.

BACKGROUND: The importance of completeness of revascularization by percutaneous coronary intervention in patients with multivessel disease is unclear in that there is little information on the impact of incomplete revascularization outside of randomized trials. The objective of this study is to compare long-term mortality and subsequent revascularization for percutaneous coronary intervention patients receiving stents who were completely revascularized (CR) with those who were incompletely revascularized (IR). METHODS AND RESULTS: Patients from New York State's Percutaneous Coronary Interventions Reporting System were subdivided into patients who were CR and IR. Then subsets of IR patients were contrasted with CR patients. Differences in long-term survival and subsequent revascularization for CR and IR patients were compared after adjustment for differences in preprocedural risk. A total of 68.9% of all stent patients with multivessel disease who were studied were IR, and 30.1% of all patients had total occlusions and/or > or =2 IR vessels. At baseline, the following patients were at higher risk: those who were older and those with more comorbid conditions, worse ejection fraction, and more renal disease and stroke. After adjustment for these baseline differences, IR patients were significantly more likely to die at any time (adjusted hazard ratio=1.15; 95% confidence interval, 1.01 to 1.30) than CR patients. IR patients with total occlusions and a total of > or =2 IR vessels were at the highest risk compared with CR patients (hazard ratio=1.36; 95% confidence interval, 1.12 to 1.66). CONCLUSIONS: IR with stenting is associated with an adverse impact on long-term mortality, and consideration should be given to either achieving CR, opting for surgery, or monitoring percutaneous coronary intervention patients with IR more closely after discharge.

Adult↗

A risk score to predict in-hospital mortality for percutaneous coronary interventions.

OBJECTIVES: Our purpose was to develop a risk score to predict in-hospital mortality for percutaneous coronary intervention (PCI) using a statewide population-based PCI registry. BACKGROUND: Risk scores predicting adverse outcomes after PCI have been developed from a single or a small group of hospitals, and their abilities to be generalized to other patient populations might be affected. METHODS: A logistic regression model was developed to predict in-hospital mortality for PCI using data from 46,090 procedures performed in 41 hospitals in the New York State Percutaneous Coronary Intervention Reporting System in 2002. A risk score was derived from this model and was validated using 2003 data from New York. RESULTS: The risk score included nine significant risk factors (age, gender, hemodynamic state, ejection fraction, pre-procedural myocardial infarction, peripheral arterial disease, congestive heart disease, renal failure, and left main disease) that were consistent with other reports. The point values for risk factors range from 1 to 9, and the total risk score ranges from 0 to 40. The observed and recalibrated predicted risks in 2003 were highly correlated for all PCI patients as well as for those in the higher-risk subgroup who suffered myocardial infarctions within 24 h before the procedure. The total risk score for mortality is strongly associated with complication rates and length of stay in the 2003 PCI data. CONCLUSIONS: The risk score accurately predicted in-hospital death for PCI procedures using future New York data. Its performance in other patient populations needs to be further studied.

Aged↗

Tissue inhibitor of metalloproteinase-1 (TIMP-1) is an independent predictor of all-cause mortality, cardiac mortality, and myocardial infarction.

BACKGROUND: Matrix metalloproteinases and their inhibitors have been implicated in both vascular and ventricular remodeling, and in atherosclerotic plaque rupture. The prognostic value of plasma tissue inhibitor of metalloproteinase-1 (TIMP-1) levels in patients with established or suspected coronary artery disease is unknown. METHODS: Tissue inhibitor of metalloproteinase-1 and matrix metalloproteinase-9 (MMP-9) levels, along with a number of other established biomarkers, were measured in 389 male patients undergoing coronary angiography at a Veterans Administration Medical Center. The patients were then followed prospectively for the occurrence of all-cause mortality, cardiac mortality, and myocardial infarction (MI). RESULTS: Follow-up data at 24 months were available for 97% of the patients. For the entire cohort of patients, TIMP-1 was the only biomarker to independently predict all-cause mortality and MI. In addition, the ratio of TIMP-1 to matrix metalloproteinase-9 was independently predictive of cardiac mortality at 24 months. The 24-month survival rates for patients in the lower quartile (< 66.5 ng/mL), interquartile (66.5-100 ng/mL), and upper quartile (> 100 ng/mL) of plasma TIMP-1 values were 95.3%, 89.3%, and 72.2%, respectively (P < .001). Furthermore, when patients with chest pain were risk stratified into those with and without an acute coronary syndrome, TIMP-1 remained an independent predictor of all-cause mortality in both subgroups. CONCLUSIONS: In a cohort of male patients undergoing coronary angiography, a single baseline determination of plasma TIMP-1 is independently predictive of the subsequent risk of death and MI.

Aged↗

The metabolic syndrome: recognition and management.

The National Cholesterol Education Program defines the metabolic syndrome as three or more of five abnormalities: waist circumference of >40 in (102 cm) for men or >35 in (88 cm) for women, triglyceride level of > or =150 mg/dL, high-density lipoprotein cholesterol of <40 mg/dL in men or <50 mg/dL in women, blood pressure of > or =130 or > or =85 mm Hg, and fasting glucose of > or =110 mg/dL. It is related to insulin resistance, but the two terms are not synonymous. Both are associated strongly with obesity. The metabolic syndrome is important as an indicator of increased risk of cardiovascular disease (CVD) in patients with and without clinical CVD. The CVD risk of the metabolic syndrome is greater than that conferred by any single CVD risk factor. Since risk factors tend to cluster, if one component of the metabolic syndrome is present, one should assess for other risk factors. The metabolic syndrome is also predictive of new-onset type 2 diabetes. Early diagnosis provides justification for measures that can improve components of the syndrome and reduce CVD risk. The management strategy for metabolic syndrome focuses on overall CVD risk rather than single risk factors; effective therapy includes priority for weight reduction and increased physical activity. Pharmacotherapy is typically needed for control of high blood pressure, hypercoagulability, and increased levels of blood glucose and triglycerides.

Adult↗

Ethnic differences in achievement of cholesterol treatment goals. Results from the National Cholesterol Education Program Evaluation Project Utilizing Novel E-Technology II.

BACKGROUND: African Americans (AA) have the highest coronary heart disease mortality rate of any ethnic group in the United States. Data from the National Cholesterol Education Program Evaluation ProjecT Utilizing Novel E-Technology (NEPTUNE) II survey were used to assess ethnic differences in low-density lipoprotein cholesterol (LDL-C) goal achievement. METHODS: NEPTUNE II surveyed patients with treated dyslipidemia to assess achievement of treatment goals established by the Adult Treatment Panel III of the National Cholesterol Education Program. United States physicians working in primary care or relevant subspecialties enrolled 10 to 20 consecutive patients (May to September 2003), and patient data were recorded in Personal Digital Assistants and uploaded to a central database via the internet. RESULTS: Among 4,885 patients receiving treatment for dyslipidemia, 79.7% were non-Hispanic white (NHW) and 8.4% were AA. Non-Hispanic white and AA patients had significantly different frequencies of treatment success, with 69.0% and 53.7%, respectively, having achieved their LDL-C goal (P<.001). African-American patients were more likely to be in the highest risk category, and less likely to be using lipid drug therapy, taking high-efficacy statins, and receiving care from a subspecialist, but the difference in goal achievement remained significant (P<.001) after adjustment for these and other predictors of treatment success. CONCLUSIONS: The frequency of treatment success in dyslipidemia management was significantly lower in AA than NHW patients. Additional research is needed to elucidate reasons for this disparity and to evaluate strategies for improving goal achievement among AA patients receiving therapy for dyslipidemia.

Black or African American↗

Effects of alcoholism on coronary artery disease and left ventricular dysfunction in male veterans.

BACKGROUND: Heavy alcohol consumption is a well-known cause of dilated cardiomyopathy and hypertension, but its effects on coronary atherosclerosis are less well understood. The objective of this study was to compare coronary anatomy and left ventricular dysfunction in patients with and without alcoholism associated with heavy consumption. METHODS: We studied 100 consecutive alcoholic male patients presenting with chest pain to the Department of Veterans Affairs New York Harbor Healthcare System (VA) between 1994 and 2002. Alcoholism was defined as a history of either chronic alcohol-related pancreatitis or liver cirrhosis. Patients were compared to age-matched controls (n = 200) that were known to be nonalcoholic. All patients underwent coronary angiography. RESULTS: Baseline demographic characteristics were similar between the two groups. The prevalence of significant coronary artery disease (CAD) (defined as coronary arterial luminal diameter stenosis > 50%) was lower in the alcoholic group than in the control group (42% vs. 58%; p = 0.013). Among patients with CAD, those with a history of alcoholism had fewer vessels with stenoses (1.6 +/- 0.6 vs. 2.3 +/- 0.7; p < 0.001) than the control group, and were more likely to have single-vessel CAD (64% vs. 8%; p < 0.05). The alcoholic group also had lower mean left ventricular ejection fraction (LVEF) compared to the control group (43 +/- 13% vs. 49 +/- 9%; p < 0.001), and a higher prevalence of left ventricular dysfunction (LVEF < 40%; 37% vs. 13%; p < 0.05). In the alcoholic group, there was a lower prevalence of CAD in patients with left ventricular dysfunction as compared to those without left ventricular dysfunction (21% vs. 49%; p = 0.006). CONCLUSIONS: In a group of male VA patients presenting with chest pain, alcoholism was associated with a lower incidence and a lesser severity of angiographically-defined CAD, but had greater left ventricular dysfunction. There appears to be an inverse relationship between CAD and left ventricular function in patients with a history of heavy alcohol consumption.

Aged↗

Comparison of efficacy and safety of rosuvastatin versus atorvastatin in African-American patients in a six-week trial.

The lipid-modifying effects of statin therapy in hypercholesterolemic African-Americans have not been well characterized. This study compared the efficacy and safety of rosuvastatin and atorvastatin treatment for 6 weeks in hypercholesterolemic African-American adults. In the African American Rosuvastatin Investigation of Efficacy and Safety (ARIES) trial (4522US/0002), 774 adult African-Americans with low-density lipoprotein cholesterol > or = 160 and < or = 300 mg/dl and triglycerides < 400 mg/dl were randomized to receive open-label rosuvastatin 10 or 20 mg or atorvastatin 10 or 20 mg for 6 weeks. At week 6, significantly greater reductions in low-density lipoprotein cholesterol, total cholesterol, non-high-density lipoprotein cholesterol, and apolipoprotein B concentrations, as well as lipoprotein and apolipoprotein ratios, were seen with rosuvastatin versus milligram-equivalent atorvastatin doses (analysis of variance with Bonferroni-adjusted critical p < 0.017 for all comparisons). Rosuvastatin 10 mg also increased high-density lipoprotein cholesterol significantly more than atorvastatin 20 mg (p < 0.017). Although statistical comparisons were not performed, larger proportions of rosuvastatin-treated patients than atorvastatin-treated patients achieved National Cholesterol Education Program Adult Treatment Panel III low-density lipoprotein cholesterol goals. The median high-sensitivity C-reactive protein levels were significantly reduced statistically from baseline with rosuvastatin 20 mg and atorvastatin 20 mg among all patients and with rosuvastatin 10 and 20 mg and atorvastatin 20 mg in those patients with a baseline C-reactive protein level > 2.0 mg/L. The 2 study medications were well tolerated during the 6-week study period. In conclusion, rosuvastatin 10 and 20 mg improved the overall lipid profile of hypercholesterolemic African-Americans better than did milligram-equivalent doses of atorvastatin.

Adult↗

Results of the National Cholesterol Education (NCEP) Program Evaluation ProjecT Utilizing Novel E-Technology (NEPTUNE) II survey and implications for treatment under the recent NCEP Writing Group recommendations.

The most recent national survey of compliance with the National Cholesterol Education Program (NCEP) Adult Treatment Panel (ATP) guidelines was completed before ATP III and showed significant underachievement of low-density lipoprotein (LDL) cholesterol goals. The NCEP Evaluation ProjecT Utilizing Novel E-Technology (NEPTUNE) II was a national survey conducted in 2003. Of the 4,885 patients, 67% achieved their LDL cholesterol treatment goal, including 89%, 76%, and 57%, respectively, in the 0 or 1 risk factor, > or = 2 risk factors or coronary heart disease (CHD), and CHD risk equivalent categories. The percentage with triglyceride concentrations > or = 200 mg/dl (2.25 mmol/L) in each risk category who achieved their LDL cholesterol and non-high-density lipoprotein cholesterol goals was 64%, 52%, and 27%, respectively. Patients with diabetes (55%) and other CHD risk equivalents (40%) were less likely to have achieved their LDL cholesterol targets than those with CHD (62%). Of the 1,447 patients with cardiovascular disease, 75% could be classified as very high risk according to the new July 2004 NCEP Writing Group recommendations, and 17.8% of those at very high risk had an LDL cholesterol level of <70 mg/dl (<1.81 mmol/L). In conclusion, these results suggest improved lipid management compared with previous surveys. The largest treatment gaps were found for features new to ATP III as of July 2004, including goal achievement for patients with CHD risk equivalents and for non-high-density lipoprotein cholesterol targets. Most of those (75%) with cardiovascular disease in NEPTUNE II would be considered very high risk and candidates for aggressive therapy to reach the new optional treatment goals.

Anticholesteremic Agents↗

Volume-outcome relationships for percutaneous coronary interventions in the stent era.

BACKGROUND: Most studies that are the basis of recommended volume thresholds for percutaneous coronary interventions (PCIs) predate the routine use of stent placement. METHODS AND RESULTS: Data from New York's Percutaneous Coronary Interventions Reporting System in 1998 to 2000 (n=107 713) were used to examine the impact of annual hospital volume and annual operator volume on in-hospital mortality, same-day coronary artery bypass graft (CABG) surgery, and same-stay CABG surgery after adjustment for differences in patients' severity of illness. For a hospital-volume threshold of 400, the odds ratios for low-volume hospitals versus high-volume hospitals were 1.98 (95% CI, 1.17, 3.35) for in-hospital mortality, 2.07 (95% CI, 1.36, 3.15) for same-day CABG surgery, and 1.51 (95% CI, 1.03, 2.21) for same-stay CABG surgery. For an operator-volume threshold of 75, the odds ratios for low-volume versus high-volume operators were 1.65 (95% CI, 1.05, 2.60) for same-day CABG surgery and 1.55 (95% CI, 1.10, 2.18) for same-stay CABG surgery. Operator volume was not significantly associated with mortality. Also, for hospital volumes below 400 and operator volumes below 75, the respective odds of mortality, same-day CABG surgery, and same-stay CABG surgery were 5.92, 4.02, and 3.92 times the odds for hospital volumes of 400 or higher and operator volumes of 75 or higher. CONCLUSIONS: Higher-volume operators and hospitals continue to experience lower risk-adjusted PCI outcome rates.

Angioplasty, Balloon, Coronary↗

Relationship of lower extremity skin blood flow to the ankle brachial index in patients with peripheral arterial disease and normal volunteers.

Changes in posture of the lower extremities induce changes in skin blood flow, known as veno-arteriolar response (VAR). We investigated the relationship between ankle brachial index (ABI) and VAR in patients (ABI<0.9) with peripheral arterial disease (PAD) and age-matched normal controls (ABI>1). We measured ankle pressure, ABI at rest, and post-exercise ABI. Using laser Doppler flowmetry, skin blood flow was measured with the lower extremity in extended and flexed positions and the fractional change (extended-flexed/extended) in blood flow (VAR) was calculated. With external pressure applied serially to the lower extremity in the extended position using a sphygmomanometer, the pressure (PVAR) at which the VAR was similar to that in the flexed position was recorded. Patients and controls did not differ by age or comorbidity, except higher cigarette smoking in patients (95.8% vs. 4.3%, p=0.001). VAR and PVAR were significantly lower in patients than controls (0.42+/-0.16 vs. 0.65+/-0.11 flux/min, p=0.001 and 29+/-8 vs. 48+/-9 mm Hg, p=0.001, respectively). There was significant correlation between ABI-post and VAR (r=0.6, p=0.01) and between the VAR and PVAR (r=0.8, p=0.001). VAR<0.3 flux/min was 100% sensitive, 80% specific, and area under curve of 0.88, p=0.001 for detecting PAD as defined by ABI<0.9. Similarly, PVAR of 22 mm Hg was 100% sensitive, 85% specific, and area under curve of 0.94, p=0.001 for detecting PAD. Skin blood flow by this method correlates with the presence and severity of an abnormal ABI. This may offer a method of monitoring the effect of therapy and regression of peripheral atherosclerosis.

Adult↗

Acute coronary syndromes in black Americans: is treatment different? Should it be?

Black Americans with acute coronary syndromes (ACS) are at greater risk and have poorer outcomes than white Americans. The reasons for this appears, at least in part, to be due to a greater burden of baseline risk factors, longer delays prior to seeking medical care, and underutilization of aggressive treatment strategies in high-risk individuals. A guiding principle of treatment of ACS is that patients at highest risk should receive the most immediate and aggressive therapy. However, compared with whites, blacks with ACS paradoxically receive less aggressive medical therapy, and are less often referred for cardiac catheterization, percutaneous coronary interventions, and bypass surgery. Treatment is--but should not be--different in black Americans. Changing this and improving care for ACS in blacks requires better strategies for decreasing patient delays, earlier recognition and diagnosis of ACS, and more effective implementation of evidence-based treatment guidelines.

Black or African American↗

Issues in minority health: atherosclerosis and coronary heart disease in African Americans.

Cardiovascular disease (in particular, CHD) is the leading cause of death in the United States for Americans of both sexes and of all racial and ethnic backgrounds. African Americans have the highest overall CHD mortality rate and the highest out-of-hospital coronary death rate of any ethnic group in the United States, particularly at younger ages. Contributors to the earlier onset of CHD and excess CHD deaths among African Americans include a high prevalence of coronary risk factors, patient delays in seeking medical care, and disparities in health care. The clinical spectrum of acute and chronic CHD in African Americans is the same as in whites; however, African Americans have a higher risk of sudden cardiac death and present clinically more often with unstable angina and non-ST-segment elevation myocardial infarction than whites. Although generally not difficult, the accurate diagnosis and risk assessment for CHD in African Americans may at times present special challenges. The high prevalence of hypertension and type 2 diabetes mellitus may contribute to discordance between symptomatology and the severity of coronary artery disease, and some noninvasive tests appear to have a lower predictive value for disease. The high prevalence of modifiable risk factors provides great opportunities for the prevention of CHD in African Americans. Patients at high risk should be targeted for intensive risk reduction measures, early recognition/diagnosis of ischemic syndromes, and appropriate referral for coronary interventions and cardiac surgical procedures. African Americans who have ACSs receive less aggressive treatment than their white counterparts but they should not. Use of evidence-based therapies for management of patients who have ACSs and better understanding of various available treatment strategies are of utmost importance. Reducing and ultimately eliminating disparities in cardiovascular care and outcomes require comprehensive programs of education and advocacy(Box 4) with the goals of (1) increasing provider and public awareness of the disparities in treatment; (2) decreasing patient delays in seeking medical care for acute myocardial infarction and other cardiac disorders; (3) more timely and appropriate therapy for ACSs; (4) improved access to preventive, diagnostic, and interventional cardiovascular therapies; (5) more effective implementation of evidence-based treatment guidelines; and (6) improved physician-patient communications.

Black or African American↗