Requires treatment: cardiac arrhythmias resulting from sinus node dysfunction in people with frequent, severe symptoms of sinus-node dysfunction, the main treatment is usually a permanent pacemaker, an implanted device that generates electrical impulses to regulate the heartbeat. Cardiac arrhythmias resulting from a-v node problems in people with a-v node problems, the passage of heartbeat signals may be blocked to different degrees. women and viagra Some patients with less severe degrees of a-v block do not need treatment. Others may simply be monitored with frequent ekgs, especially if they don't have any symptoms and have a heart rate that is adequate for their daily activities. People with the most severe form of a-v block (called third-degree a-v block) can be treated with a special dual-chambered permanent pacemaker, a pacemaker with one electrode in the atrium and one in the ventricle. viagra use age Hypothyroidism hypothyroidism is treated with replacement doses of thyroid hormones. Synthetic forms of these hormones are available levothyroxine (synthroid, levothroid and others), liothyronine (cytomel, triostat) or liotrix (thyrolar) as well as thyroid extract. When to call a professional call your doctor if your pulse is less than 60 beats per minute. This is especially important if you have had dizziness, weakness, lack of energy or fainting spells. buy viagra Prognosis in well-trained athletes with normal bradycardia, the slow heartbeat is often a sign of overall good health. In other people with bradycardia, the outlook depends on the underlying disorder. For example, the prognosis is usually good in people with hypothyroidism, since treatment with thyroid hormones can relieve bradycardia and other symptoms related to low hormone levels. In some elderly patients, hormone dosages may need to be increased very slowly over several weeks to prevent straining the heart. order viagra At one time, the prognosis for people with third-degree a-v block was poor, with 50% of patients dying within one year of diagnosis. non prescription viagra boots Now, however, the availability of permanent pacemakers has improved the prognosis for many people with cardiac arrhythmias. Additional info american heart association (aha) 7272 greenville ave. viagra sold walmart Dallas, tx 75231 toll-free: (800) 242-8721 national heart, lung, and blood institute (nhlbi) p. cheapest viagra pills O. Box 30105 bethesda, md 20824-0105 phone: (301) 592-8573 tty: (240) 629-3255 fax: (301) 592-8563 e-mail: nhlbiinfo@rover. Nhlbi. Nih. Gov american college of cardiology heart house 9111 old georgetown road bethesda, md 20814-1699 phone: (301) 897-5400 toll-free: (800) 253-4636, ext. how to get viagra prescription uk 694 fax: (301) 897-9745 e-mail: resource@acc. generic viagra no rx Org     online medical reviewer: faculty of harvard medical school date last reviewed: 1/28/2005 date last modified: 2/17/2005 source: from harvard health decision guides, har. cheap viagra online viagra without a doctor prescription