![]() ![]() Drugs with antiarrhythmic activity should be avoided in these patients before pacemaker implantation. The immediate implantation of a pacemaker is justifiable in group 3 patients. In the symptomatic patients from group 2, 24-hour-ECG is indicated when there is a history of palpitations, dizziness or severe heart failure. In group 1, further diagnostic or therapeutic consequences need to be drawn. More invasive electrophysiological investigations should be undertaken only with caution. Three patients who were not anticoagulated suffered a stroke. Seventeen patients remained without treatment, 13 received a permanent pacemaker, 9 of whom had additional medication, while 12 were anticoagulated. ![]() Carotid sinus massage was performed in three patients and sinus node recovery time was measured in another three. All patients had had an ECG and 15 a 24-hour-ECG. Forty-four patients (17 women, 27 men, mean age 64.5 +/- 14.5 years) were "discovered" and divided into three groups: Group 1: asymptomatic patients with pathological ECG (n = 7), Group 2: symptomatic patients with pathological ECG (n = 22), Group 3: main symptom syncope (n = 15). A retrospective study was conducted by selecting patients' charts with this diagnosis during the period 1979-1983. For additional information visit Linking to and Using Content from MedlinePlus.Incidence, clinical picture, ECG features, as well as chosen diagnostic and therapeutic measures were investigated in patients attending the Basel University Medical Outpatients Department with the diagnosis of sick sinus syndrome. Any duplication or distribution of the information contained herein is strictly prohibited without authorization. Links to other sites are provided for information only - they do not constitute endorsements of those other sites. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. ![]() The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. Sick sinus syndrome, also known as sinus node dysfunction (SND), is a disorder of the sinoatrial (SA) node caused by impaired pacemaker function and impulse transmission producing a constellation of abnormal rhythms. This site complies with the HONcode standard for trustworthy health information: verify here. You may also hear it referred to as sinus node dysfunction (SND). This disorder is most commonly seen in people over 70 years of age. Learn more about A.D.A.M.'s editorial policy editorial process and privacy policy. Sick sinus syndrome occurs when the sinus node becomes diseased enough to cause bradycardia (slow heart rate) that produces symptoms. is among the first to achieve this important distinction for online health information and services. follows rigorous standards of quality and accountability. is accredited by URAC, for Health Content Provider (URAC's accreditation program is an independent audit to verify that A.D.A.M. These include digitalis, calcium channel blockers, beta-blockers, and antiarrhythmics.Ī.D.A.M., Inc. Some medicines can make abnormal heart rhythms worse, especially when doses are high. When there are periods of both slow and fast heart rates (rhythms) the condition often will be called tachy-brady syndrome. A period of fast heart rates is often followed by very slow heart rates. Many of these PPMs are implanted as a preventive measure, in absence of symptomatic bradycardia. These include atrial fibrillation, atrial flutter, atrial tachycardia. Aims: Many tachy-brady syndrome (TBS) patients, are implanted a permanent pacemaker (PPM) to allow continuation of anti-arrhythmic drug (AAD) therapy to maintain sinus rhythm. Tachycardias (rapid heart rhythms) that start in the upper chambers of the heart may be part of the syndrome. Sinus bradycardia occurs more often than the other types of the condition. It is the most common reason people need to have an artificial pacemaker implanted. Sick sinus syndrome is uncommon, but not rare. However, these diseases may have nothing to do with the syndrome. ![]() In children, heart surgery on the upper chambers is a common cause of sick sinus syndrome.Ĭoronary heart disease, high blood pressure, and aortic and mitral valve diseases may occur with sick sinus syndrome. It is often due to scar-like damage to electrical pathways in the heart muscle tissue. Sick sinus syndrome most often occurs in people older than age 50. ![]()
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