Items in AFP with MESH term: Adrenergic beta-Antagonists
ABSTRACT: Several large clinical trials conducted over the past decade have shown that pharmacologic interventions can dramatically reduce the morbidity and mortality associated with heart failure. These trials have modified and enhanced the therapeutic paradigm for heart failure and extended treatment goals beyond limiting congestive symptoms of volume overload. Part II of this two-part article presents treatment recommendations for patients with left ventricular systolic dysfunction. The authors recommend that, if tolerated and not contraindicated, the following agents be used in patients with left ventricular systolic dysfunction: an angiotensin-converting enzyme inhibitor in all patients; a beta blocker in all patients except those who have symptoms at rest; and spironolactone in patients who have symptoms at rest or who have had such symptoms within the past six months. Diuretics and digoxin should be reserved, as needed, for symptomatic management of heart failure. Other treatments or treatment programs may be necessary in individual patients.
ABSTRACT: Diastolic heart failure, a major cause of morbidity and mortality, is defined as symptoms of heart failure in a patient with preserved left ventricular function. It is characterized by a stiff left ventricle with decreased compliance and impaired relaxation, which leads to increased end diastolic pressure. Signs and symptoms are similar to those of heart failure with systolic dysfunction. The diagnosis of diastolic heart failure is best made with Doppler echocardiography. Based on current knowledge, pharmacologic treatment of diastolic heart failure should focus on normalizing blood pressure, promoting regression of left ventricular hypertrophy, avoiding tachycardia, treating symptoms of congestion, and maintaining normal atrial contraction when possible. Diuretic therapy is the mainstay of treatment for preventing pulmonary congestion, while beta blockers appear to be useful in preventing tachycardia and thereby prolonging left ventricular diastolic filling time. Angiotensin-converting enzyme inhibitors and angiotensin-receptor blockers may be beneficial in patients with diastolic dysfunction, especially those with hypertension. Evidence from adequately powered randomized controlled trials, however, is not available yet. The outcomes of ongoing clinical trials may provide much-needed information to move from intuitive treatment to therapy based on evidence that matters: decreased morbidity and mortality and improved quality of life.
Are Beta Blockers Effective First-line Treatments for Hypertension? - Cochrane for Clinicians
Inhaled Beta Agonists for Chronic, Nonspecific Cough in Children? - Cochrane for Clinicians
Beta-Blocker Use in Patients with COPD - Cochrane for Clinicians
ABSTRACT: Heart failure caused by systolic dysfunction affects more than 5 million adults in the United States and is a common source of outpatient visits to primary care physicians. Mortality rates are high, yet a number of pharmacologic interventions may improve outcomes. Other interventions, including patient education, counseling, and regular self-monitoring, are critical, but are beyond the scope of this article. Angiotensin-converting enzyme inhibitors and beta blockers reduce mortality and should be administered to all patients unless contraindicated. Diuretics are indicated for symptomatic patients as needed for volume overload. Aldosterone antagonists and direct-acting vasodilators, such as isosorbide dinitrate and hydralazine, may improve mortality in selected patients. Angiotensin receptor blockers can be used as an alternative therapy for patients intolerant of angiotensin-converting enzyme inhibitors and in some patients who are persistently symptomatic. Digoxin may improve symptoms and is helpful for persons with concomitant atrial fibrillation, but it does not reduce cardiovascular or all-cause mortality. Serum digoxin levels should not exceed 1.0 ng per mL (1.3 nmol per L), especially in women.
ABSTRACT: Coronary artery disease is the leading cause of mortality in the United States. In patients who have had a myocardial infarction or revascularization procedure, secondary prevention of coronary artery disease by comprehensive risk factor modification reduces mortality, decreases subsequent cardiac events, and improves quality of life. Options for secondary prevention include medical therapy and surgical revascularization in the form of coronary artery bypass grafting or percutaneous coronary intervention. Medical therapy focuses on comprehensive risk factor modification. Therapeutic lifestyle changes (including weight management, physical activity, tobacco cessation, and dietary modification) improve cardiac risk factors and are universally recommended by evidence-based guidelines. Treatment of hypertension and dyslipidemia reduces morbidity and mortality. Recommendations for persons with diabetes mellitus generally encourage glucose control, but current evidence has not shown reductions in mortality with intensive glucose management. Aspirin, angiotensin-converting enzyme inhibitors, and beta blockers reduce recurrent cardiac events in patients after myocardial infarction. Surgical revascularization by coronary artery bypass grafting is recommended for those with significant left main coronary artery stenosis, significant stenosis of the proximal left anterior descending artery, multivessel coronary disease, or disabling angina. Percutaneous coronary intervention may be considered in select patients with objective evidence of ischemia demonstrated by noninvasive testing.
ABSTRACT: Medication classes historically used in the management of glaucoma include beta blockers, miotics, sympathomimetics and carbonic anhydrase inhibitors. Because topically applied medications are more site specific, they are preferred in the treatment of glaucoma. Compared with oral medications, topical agents are associated with a decreased incidence of systemic side effects. With topical administration, conjunctival and localized skin allergic reactions are relatively common, whereas severe reactions, including death, are rare. Recently introduced topical agents for glaucoma therapy include dorzolamide and brinzolamide, the first topical carbonic anhydrase inhibitors; brimonidine and apraclonidine, more ocular-specific alpha agonists; and latanoprost, a prostaglandin analog, which is a new class of glaucoma medication. Latanoprost has the unique side effect of increasing iris pigmentation. Like their predecessors, the newer agents lower intraocular pressure by a statistically significant degree. Preservation of visual field, the more substantial patient-oriented end point, continues to be studied.
Treatment Guidelines for Heart Failure Stress Multidrug Approach - Special Medical Reports
ABSTRACT: Social phobia is a highly prevalent yet often overlooked psychiatric disorder that can cause severe disability but fortunately has shown responsiveness to specific pharmacotherapy and psychotherapy. Recognition of its essential clinical features and the use of brief, targeted screening questions can improve detection within family practice settings. Cognitive behavioral therapy, with or without specific antidepressant therapy, is the evidence-based treatment of choice for most patients. Adjunctive use of benzodiazepines can facilitate the treatment response of patients who need initial symptom relief. The use of beta blockers as needed has been found to be helpful in the treatment of circumscribed social and performance phobias. Treatment planning should consider the patient's preference, the severity of presenting symptoms, the degree of functional impairment, psychiatric and substance-related comorbidity, and long-term treatment goals.