Chronic heart failure lies in the end stage of development of many cardiovascular diseases. Problems such as coronary heart disease, hypertensive heart disease and cardiomyopathy may all eventually develop into chronic heart failure, when cardiac function is seriously impaired with structural changes. As the heart is unable to pump enough blood supply to organs and meet metabolic needs at this time, a number of precarious complications may follow with a high mortality rate.
Acute myocardial infarction is myocardial necrosis caused by acute, persistent ischemia and hypoxia in the coronary arteries. Severe and persistent post sternal pains are common in clinical settings. Taking rest or nitrates cannot completely relieve patients’ symptoms.Taking rest or nitrates cannot completely relieve patients’ symptoms. Patients often have elevated serum myocardial enzyme activity and progressive ECG changes,
Commonly known as apoplexy, cerebral stroke is the second most common cause of death and disability in the world. Stroke is the most common cerebrovascular disease causing high disability rate and mortality rates. The incidence rate varies greatly in different regions of the world and is closely related with diet and living habits. In recent years, the overall incidence rate has increased year by year. China is a country with high incidence of stroke. Results of the third survey on death causes published in 2008 show that cerebrovascular disease has risen to the first place among various causes, and there has been an increasing number of young-age patients: 10% to 15% of young and middle-aged patients develop symptoms before 45, and it is hard for stroke patients to restore health.
Alzheimer's disease, commonly known as senile dementia, is a common neurodegenerative disease attacking central nervous system. The pathological features are mainly β-amyloid deposition in the brain, intracellular neurofibrillary tangles and neuron loss. Neuron loss is one of the root causes of functional impairment in Alzheimer's patients. As the disease progresses, patients with severe dementia will become completely dependent on caregivers and experience severe memory loss, with fragments of memory left. Patients will lose the ability of taking care of themselves in daily life and develop gatism, showing silence and limb stiffness. Results of health examination may indicate positive pyramidal tract signs and original reflections such as strong grip, groping and sucking. The patient would slip into coma eventually and usually die of infections and other complications.