Keywords: sick sinus syndrome
Referred to as “sick sinus syndrome sick sinus syndrome, also known as the sinus node dysfunction, sinus node pacemaker function and (or) sinoatrial conduction disturbances caused by the sinus node and its surrounding tissue lesions, resulting in a variety of heart rhythm disorders and clinical symptoms. Most of symptoms in more than 40 years of age. According to the Shanghai Medical University Affiliated Zhongshan Hospital, there are clear symptoms of patients age 40 to 50 and 60 to 70-year-old is the most common.
Cause: frequent cause cardiomyopathy, coronary heart disease, myocarditis, also found in connective tissue disease, metabolic or infiltrative disorders, many cases of unknown etiology. Shanghai Medical University, Zhongshan Hospital, SSS unknown etiology accounted for 37.9%. Literature autopsy data show that cardiac conduction system of unknown cause degenerative changes to the SSS the most common cause. In addition to the sinus node and its neighboring tissue, the rest of the cardiac conduction system, may be involved, resulting in multiple potential pacing and conduction dysfunction. Merger the atrioventricular junction pacing or conduction failure, also known as dual-node disease; involved the left and right bundle branch called conduction system disease.
Mostly slow the progression of serious symptoms from the onset of symptoms to up to 5 to 10 years or longer. The small number of acute episodes, seen in acute myocardial infarction and acute myocarditis.
Clinical manifestations: clinical manifestations of varying severity, can be intermittent seizures. More to slow the heart rate the cerebral blood for lack of symptoms mainly due to insufficient blood supply to the brain, heart, kidneys and other organs. The light, fatigue, dizziness, vertigo, insomnia, memory, unresponsive or irritability, easily misdiagnosed as neurotic levy. Severe cases can cause temporary black