4 characteristics of diabetic heart disease

As we all know, diabetes and heart disease are a pair of "difficult brothers." However, because the symptoms of diabetic heart disease are not typical, they are often overlooked or missed. So, what are the characteristics of diabetic heart disease compared with common coronary heart disease?

4 characteristics of diabetic heart disease

Feature 1: prone to orthostatic hypotension

Many people with diabetes often feel dizziness, vertigo, flustered, sweating, black eyes, and even fainting. When measuring blood pressure, it was found that the patient's systolic blood pressure decreased from 30 mmHg and the diastolic blood pressure decreased from 20 mmHg to 20 mmHg. This condition is called "post position hypotension".


When a normal person changes in position, the body can maintain normal blood pressure by increasing vascular tone and cardiac output. However, due to long-term hyperglycemia, diabetics cause autonomic nerves (especially sympathetic nerves) that innervate blood vessels, causing blood vessels to fail in time. Contraction, resulting in a transient drop in blood pressure. We know that most cardiovascular patients have high blood pressure, but the cardiovascular disease in diabetic patients may be low blood pressure. "Standing hypotension" is one of the characteristics of diabetic heart disease.

Feature 2: Speed ​​up the heartbeat during rest

Normal people have a faster heart rate during exercise and a slower heart rate during rest. However, some people with diabetes do not, but the heart rate increases at rest, and the heart rate is more than 90 times per minute. It is accompanied by symptoms such as palpitations, palpitation, chest tightness, and dizziness. This is also caused by long-term glucose toxicity. The reason for the impaired function. In addition, some people with diabetes show "fixed heart rate", that is, heart rate does not increase or slow down with activity or rest. This is because the patient's vagus nerve and sympathetic nerve are both paralyzed and the heart completely loses its autonomic innervation.

Feature 3: high incidence of painless myocardial infarction

In patients with common coronary heart disease, when myocardial ischemia and hypoxia, the tissue will produce a large amount of lactic acid, stimulating the sensory nerves of the heart, causing pain, commonly known as angina. However, after diabetes patients with coronary heart disease, even if the heart muscle has severe ischemia and hypoxia, patients often have no symptoms of angina, and even when there is a critical situation such as acute myocardial infarction, they are still unaware. This painless myocardial infarction is extremely easy. Misdiagnosis and missed diagnosis are also one of the causes of sudden death. This is because the sensory nerves of diabetic patients are generally passivated and even lose function, making the pain symptoms mild and atypical. Therefore, diabetic patients need to have regular cardiovascular related examinations (such as electrocardiogram) even if they do not have the corresponding symptoms of cardiovascular disease, so as to early detection and early intervention.

Feature 4: The age of onset of cardiovascular disease is advanced

In the eyes of ordinary people, cardiovascular and cerebrovascular diseases are mainly found in the middle-aged and elderly population. Epidemiological survey shows that the age of onset of cardiovascular disease in diabetic population is 5 to 10 years earlier than that of non-diabetic people. Many obese patients with type 2 diabetes are suffering from hypertension, coronary heart disease, and even acute myocardial infarction. Caused sudden death. This is because people with diabetes often have multiple cardiovascular risk factors (such as hypertension, dyslipidemia, obesity, smoking, etc.), the risk of cardiovascular disease is significantly increased, and the age is advanced.