Cardiovascular Diseases

A meta-analysis of data from randomized, parallel-designed, placebo-controlled studies involving >44,000 patients demonstrated that those who had taken the cycloxygenase-2 (COX-2) inhibitor celecoxib (50–800 mg TDD) had a lower incidence of adverse cardiorenal events including hypertension, edema, or congestive heart failure than those taking nonselective non-steroidal anti-inflammatory drugs (NSAIDs), according to an oral and poster presentation at the 21st annual scientific meeting of the American Society of Hypertension (ASH) in New York, NY.

While the increased risk of vascular events associated with cyclooxygenase-2 (COX-2) inhibitors has been well established, new data are emerging that demonstrate similar risk increases associated with non-steroidal anti-inflammatory drugs (NSAIDs) that are not selective for COX-2. The data, published in the British Medical Journal (BMJ), were from a meta-analysis of published and unpublished randomized trials. The study comes more than a year after the withdrawals of the COX-2-selective NSAIDs rofecoxib and valdecoxib from the US market.

A meta-analysis of data from national hospital records in Denmark and from the country's national prescription registry showed that the use of selective cyclooxygenase-2 (COX-2) inhibitors in all doses and nonselective non-steroidal anti-inflammatory drugs (NSAIDs) in high doses raised the risk of death in patients who experienced first-time acute myocardial infarction (MI).

An observational cohort study found that the risk of major congenital malformations for infants who were exposed to angiotensin-converting enzyme (ACE) inhibitors during their first trimester increased by a factor of more than 2, while exposure to other antihypertensive medications did not demonstrate an increased risk.

A cohort study with a nested case-control analysis of first hospitalizations for heart failure (HF) associated the use of non-steroidal anti-inflammatory drugs (NSAIDs) with a 30% increase in the target end point among patients aged 60 to 84 years.

Phase 3 clinical trials demonstrated that the once-daily, highly selective beta blocker nebivolol lowers blood pressure in a dose-dependent manner and is well tolerated at all doses, according to presenters at the 21st annual scientific meeting of the American Society of Hypertension (ASH), in New York, NY.

A review of agents in late-stage development for the treatment of atherosclerosis and thrombosis (June 2006).

Angiotensin-converting enzyme (ACE) inhibitors and angiotensin receptor blockers (ARBs) play a role in the treatment of hypertension (HTN) and heart failure (HF). The literature shows that in patients with HTN with comorbidities, such as HF, myocardial infarction (MI), diabetes mellitus, chronic kidney disease, and stroke, ACE inhibitors and ARBs appear to provide added benefit beyond solely lowering blood pressure. In addition, clinical trials have also demonstrated that ACE inhibitors and ARBs may be beneficial in the prevention of diabetes, atrial fibrillation (AF), and recurrent stroke. This review evaluates the practice guidelines and current literature to assess the implications for the use of ACE inhibitors or ARBs in HTN and HF.

The 55th Annual Scientific Session of the American College of Cardiology (ACC) assembled from March 11 to March 14, 2006, in Atlanta, Ga, to exchange new and continuing research in cardiovascular disease. The program featured more than 1,600 oral and poster presentations of original research and hundreds of invited lectures and interactive sessions, with many offering the opportunity to update attendees' knowledge of available and investigational pharmaceuticals.

Aspirin is the cornerstone of therapy in the treatment and prevention of cardiovascular disease. The potential benefit of aspirin therapy may be significantly reduced in patients with aspirin resistance, creating a clinical and economic burden on the healthcare system. The purpose of this article is to clarify the term "aspirin resistance," describe the proposed mechanisms, review the clinical outcome studies with associated resistance testing, and discuss the potential pharmacologic management of this problem. Literature searches were performed using MEDLINE (January 1966 to January 2006) for review articles on aspirin resistance and antiplatelet activity. Aspirin's primary mechanism of action is to irreversibly inhibit cyclooxygenase-1 (COX-1); however, there are reports of alternative biochemical pathways producing platelet aggregation. The addition of thienopyridines to aspirin should be considered for the management of aspirin-resistant patients. (Formulary. 2006;41:192–201.)

Topiramate safely decreases body mass, hypertension. Topiramate reduces body weight and blood pressure with generally mild-to-moderate adverse effects, according to a randomized, placebo-controlled trial involving obese subjects with hypertension.

A recent meta-analysis published in the Journal of the American Medical Association (JAMA) found that statins have no effect on cancer risk. The finding is in contrast with at least 7 retrospective analyses that suggest that statins reduce the risk of developing cancer.

The serine protease inhibitor aprotinin (Trasylol, Bayer) may increase the risk of renal failure, myocardial infarction, heart failure, stroke, and encephalopathy among patients undergoing coronary artery bypass graft (CABG) surgery, according to an observational study in the New England Journal of Medicine (NEJM).

Beta blockers, touted for 3 decades as first-line drugs in the treatment of hypertension, are less than optimum in comparison to other antihypertensive drugs and raise the risk of stroke, according to a meta-analysis published online by The Lancet.

Early invasive strategy, recommended by the current guidelines in the treatment of patients with acute coronary syndromes (ACS), did not excel when compared with its more conservative alternative in a randomized study published in the New England Journal of Medicine.

Utilizing statin therapy, researchers have provided further evidence that absolute reductions in LDL-C reduce the incidence of coronary heart disease (CHD) and other major vascular events.

Dronedarone, a class III multichannel blocker developed for maintenance of sinus rhythm and ventricular rate control, reduces the risk of all-cause hospitalizations and death in patients with atrial fibrillation/flutter (AF/AFl), according to a post-hoc analysis of 2 randomized, placebo-controlled clinical trials.

The calcium sensitizer levosimendan was associated with an improvement in the clinical course of patients compared with placebo when used for the treatment of acute decompensated heart failure (ADHF), but the drug failed to reduce 6-month mortality when compared with dobutamine in a similar set of patients.

Drugs that reduce brachial blood pressure similarly can have different effects on central blood pressure. This finding may explain differences in clinical end points between antihypertensive drugs that lower blood pressure similarly, said Bryan Williams, MD, lead investigator of the Conduit Artery Function Evaluation (CAF?) trial, a substudy of the Anglo-Scandinavian Cardiac Outcomes Trial (ASCOT).

In a trial comparing high-dose atorvastatin with moderate-dose simvastatin in patients with stable coronary heart disease (CHD), the aggressive LDL-lowering strategy offered no significant advantage over the less aggressive strategy in reducing the number of coronary events, said Terje R. Pedersen, MD.

A nicotinic acetylcholine receptor partial agonist is an effective smoking cessation aid, said Serena Tonstad, MD, PhD, professor of nutrition at the Ulleval University Hospital, Oslo, Norway.

The anti-anginal agent ranolazine, in phase 3 clinical trials, reduced anginal frequency in patients experiencing 3 or more anginal attacks per week despite daily treatment with amlodipine 10 mg/d said Peter Stone, MD, lead investigator of the Evaluation of Ranolazine in Chronic Angina (ERICA) trial.

An exploratory analysis of PROactive (Prospective Pioglitazone Clinical Trial In Macrovascular Events Study) demonstrated a significant reduction in the risk of a second coronary event in patients with type 2 diabetes who took pioglitazone.

Oral anticoagulant therapy proved superior to the combination of clopidogrel and aspirin in preventing adverse vascular outcomes in patients with atrial fibrillation (AF). This outcome was observed in a large, multicenter trial at the 2005 AHA meeting in Dallas, comparing warfarin therapy with combination antiplatelet therapy in patients with AF.

The American Heart Association (AHA) Scientific Sessions comprise the world's largest conference for scientists and healthcare professionals focusing on cardiovascular disease.