Relation of the Ankle Brachial Index to Left Ventricular Ejection Fraction in Patients Without Coronary Artery Disease.

BACKGROUND: The low ankle brachial index (ABI) values are indicative of peripheral arterial disease, but have recently been found to be associated with reduced left ventricular ejection fraction (LVEF). This may relate to coexisting coronary artery disease (CAD). AIM: This study prospectively assessed a potential ABI-LVEF association in patients without CAD. METHODS AND RESULTS: We studied 55 patients (age 57 ± 13 years, 49% male) with normal coronary arteries with LVEF determination. ABI, pulse wave velocity (PWV), and augmentation index (AI) were performed after coronary angiography. ABI correlated with LVEF (r = 0.40, p = 0.002), but not with PWV or AI. On linear regression analysis, ABI was independently associated with LVEF (B = 0.42, p = 0.004). The median LVEF was lower in subjects with low ABI values compared to those with normal ABI values (33 vs. 61%; p = 0.001). CONCLUSION: ABI may be influenced by LVEF independently of CAD, arterial stiffness or pressure wave reflection.

Peripheral arterial disease: current perspectives and new trends in management.

Peripheral arterial disease (PAD) is defined as an arterial brachial index (ABI) of < or =0.90 in the lower extremities and results from a narrowing of the arteries as a result of progressive atherosclerosis. PAD affects 12-20% of Americans aged 65 years or older; however, most are asymptomatic and many do not seek treatment. Improved awareness and education in both the general population and among health care providers about these modifiable risk factors has the potential to improve general health and decrease morbidity and mortality secondary to atherosclerotic vascular disease.

The frequency and functional impact of overlapping hypertension on hypertrophic cardiomyopathy: a single-center experience.

Between 1995 and 2005, 196 adults with hypertrophic cardiomyopathy (HCM) were evaluated. Among these, 122 (62%, group 1) patients also had systemic hypertension. The clinical presentation, management, outcome, and echocardiographic findings of these patients were compared with 74 (38%, group 2) patients without systemic hypertension. Patients in group 1 were older at the time of HCM diagnosis and had a higher prevalence of diabetes (28% vs 9%; P=.02) and coronary artery disease (40% vs 25%; P=.03). In addition, echocardiography showed a significantly higher prevalence of systolic anterior motion of the anterior mitral valve in association with dynamic left ventricular outflow obstruction (52% vs 19%; P=.02) and mitral annular calcification (27% vs 13%; P=.03) in group 1 patients. Left ventricular wall thickness (17 mm vs 19 mm), end-diastolic diameter (42 mm vs 42 mm), resting outflow tract gradient >30 mm Hg (17% vs 16%), and ejection fraction (65% vs 64%) were similar in the two groups. HCM frequently coexists with systemic hypertension in the adult population. Presence of systemic hypertension in HCM patients is associated with older age and higher risk of diabetes, coronary artery disease, and noncardiac death.

Heart failure in subjects with chronic kidney disease: Best management practices.

Renal dysfunction is common in patients with heart failure (HF) and can complicate HF therapy. Treating patients with HF and kidney disease is difficult and requires careful assessment, monitoring and balancing of risk between potential benefits of treatment and adverse impact on renal function. In this review, we address the pathophysiological contexts and management options in this adversarial relation between the heart and the kidney, which exists in a substantial proportion of HF patients. Angiotensin converting enzyme inhibitors and ß-blockers are associated with similar reductions in mortality in patients with and without renal insufficiency but usually are less often prescribed in patients with renal insufficiency. Careful monitoring of side effects and renal function should be done in all patients with renal insufficiency and prompt measures should be adopted to prevent further complications.

Hypertension prevalence and prescribing trends in older US adults: 1999-2004.

To describe hypertension trends in US adults aged 65 years and older using Medicare Current Beneficiary Survey (MCBS) data, a cross-sectional, nationally representative health examination survey from MCBS files between 1999 and 2004 was investigated. Overall, 62% of beneficiaries, or an estimated 20 million US adults aged 65 years and older, were hypertensive as extrapolated from MCBS data. From 1999 to 2004, the prevalence rate of hypertension increased from 59% to 65% (P<.001). Nonwhite persons and women had a higher prevalence of hypertension than whites and men. A history of diabetes mellitus, prior myocardial infarction, coronary artery disease, or stroke was significantly associated with hypertension treatment. In addition, significant geographic variation in treatment was noted. There was a significant increase in hypertension prevalence in older Medicare beneficiaries from 1999 to 2004. Women, patients 85 years and older, and nonwhite patients were less likely to be treated with antihypertensive medications, and significant geographic variation existed in treatment.

Patient adherence and preference considerations in managing cardiovascular risk: focus on single pill and amlodipine/atorvastatin fixed combination.

Cardiovascular disease (CVD) accounts for in excess of 930,000 deaths in the United States each year. Risk factors for CVD often co-exist. Studies estimate that over half of the hypertensive population also has dyslipidemia. Observational data suggest that fewer than 10% of patients attain recommended therapeutic targets for both conditions. A variety of patient, regimen and system characteristics have been associated with the risk for non-adherence. Poly-pharmacy and complex drug regimens are associated with poor patient adherence and thus the use of fixed-dose combination therapies, may improve adherence by reducing the pill burden. The fixed-dose combination of amlodipine/atorvastatin offers a convenient and effective approach to manage two important CVD risk factors. The combination of amlodipine/atorvastatin has a synergistic effect. The half-life of both agents facilitates once-daily dosing and both can be administered at any time of the day with or without food. Amlodipine/atorvastatin combined pill can be used to initiate both agents or patients can be switched directly from single-agent therapy with one or both agents. The convenience of single-pill amlodipine/atorvastatin has the potential to improve patient adherence and the management of cardiovascular risk in selected patients, thereby improving clinical outcomes.

Hyperlipidemia in older adults.

Older adults carry the highest risk for coronary artery disease and the highest burden of atherosclerosis. Although most clinical trials of cholesterol-lowering therapy have not specifically targeted older persons, growing evidence supports treatment of elevated low-density lipoprotein cholesterol levels in older patients, especially those at high risk for coronary events. The decision to treat a high or high-normal cholesterol level in an elderly individual must be individualized based on chronologic and physiologic age. This article summarizes current data on lipid-lowering therapy in older adults and the management of hyperlipidemia in elderly patients.

Patent foramen ovale: assessment, clinical significance and therapeutic options.

Foramen ovale plays an important function in the fetus but is of no physiologic significance after birth and closes in most individuals. In about one fourth of the population, however, foramen ovale remains open for life and has been associated with cerebrovascular accidents, especially in younger patients, presumably through paradoxical embolism. Patent foramen ovale (PFO) has also been associated with hypoxia, migraine headaches and neurologic findings of decompression illness in scuba divers. Availability of transesophageal echocardiography and its frequent use in the management of patients with stroke has lead to frequent detection of PFO. In addition, the recent development of devices and techniques for percutaneous closure of PFO has resulted in widespread enthusiasm for such interventions, even when a clear etiologic role for PFO may not be established. In the United States, the Federal Drug Administration (FDA) has approved two such devices through compassionate investigational device exemption without adequate data from large randomized clinical studies. Other such devices are undergoing evaluation in clinical trials. Expert opinions have been helpful for clinical decision making in management of patients with PFO associated with stroke, hypoxia, decompression sickness and migraine headaches.