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Myocardial ischemia refers to a pathological state in which the blood perfusion of the heart is reduced, resulting in a decrease in oxygen supply to the heart, abnormal myocardial energy metabolism, and inability to support the normal work of the heart. The blood supply to the heart is not static, but there are always fluctuations, but these fluctuations are regulated by the body itself, so that the supply and demand of blood are relatively constant, and the heart works properly. If any one of the causes causes myocardial ischemia, the body's regulation cannot meet the needs of the heart, which constitutes myocardial ischemia in the true sense.
Why does the heart have ischemia? Decreased blood pressure, decreased blood supply to the aorta, and blocked coronary arteries can directly lead to a decrease in blood supply to the heart; Valvular heart disease, changes in blood viscosity, and lesions of the heart muscle itself can also reduce the blood supply to the heart. There is also a condition in which the blood supply to the heart is not reduced, but the oxygen requirement of the heart increases, which is a type of relative myocardial ischemia.
The blood vessels that supply blood to the heart are called coronary arteries, and their openings are in the ascending aorta. Clinical results show that the main and most common cause of myocardial ischemia is coronary artery stenosis.
And the main cause of coronary artery stenosis is atherosclerosis. Heart disease caused by coronary atherosclerosis is often referred to as coronary heart disease. Therefore, coronary heart disease is the "main culprit" of myocardial ischemia.
Myocardial ischemia can have many adverse effects on the heart and throughout the body. Oxygen is essential for the activity of heart muscle cells, and oxygen is delivered to cells through the blood. The heart does not have an "oxygen storehouse" and is completely dependent on the blood supply to the myocardium, so once it is ischemia, it will immediately cause hypoxia.
The direct consequence of hypoxia is that the aerobic metabolism of myocardial cells is weakened, and the production capacity is reduced, so that the necessary energy ** for heart activity is insufficient, causing angina, arrhythmia, and decreased cardiac function. At the same time, metabolic wastes cannot be effectively removed in a timely manner, which is prone to adverse effects. Ischemia, hypoxia, and energy deficiency will eventually affect the systolic function of the heart.
Left ventricular failure usually occurs if the myocardium stops contracting in 20 25; If more than 40 percent of the heart muscle fails to contract, severe heart pump failure occurs. If this happens suddenly, a very dangerous cardiogenic shock can occur. Acute myocardial infarction is often associated with this condition Myocardial ischemia can also impair diastolic function.
The combination of poor systolic and diastolic tends to lead to increased ventricular filling pressure, pulmonary congestion, complex substance metabolism disorders, and myocardial electrical activity abnormalities. Therefore, once myocardial ischemia occurs, it is necessary to find the right symptom to avoid potential serious consequences. Cardiological ischemia is a type of coronary heart disease,** and the regimen is to choose nitrates (such as isosorbide mononitrate or its extended-release dosage form), which has the effect of dilating the coronary arteries of the heart and increasing the blood supply to the myocardium; Statins (such as avastatin, simvastatin) should also be taken to reduce cholesterol in the plasma on the one hand, stabilize the arterial plaque on the other, and prevent the plaque from falling off to form blood clots, causing stroke, etc.
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There are three types of myocardial ischemia.
Safe, asymptomatic myocardial ischemia: This asymptomatic type is found to have myocardial ischemia incidentally, and it is estimated that it accounts for 2% to 5% of middle-aged men (general population) who have no symptoms of coronary artery disease at all. The prognosis is similar to that of patients with angina.
Asymptomatic myocardial ischemia after myocardial infarction: It is more common for patients to have myocardial ischemia without angina after myocardial infarction. The prognosis for this type is worse than that of the group, especially when the left ventricular function is abnormal, and the mortality rate is 5% to 6%.
Angina with asymptomatic myocardial ischemia: studies have shown that 70% to 80% of patients with angina have both asymptomatic myocardial ischemia and can occur in different types of angina. It must be pointed out that patients with unstable angina pectoris with asymptomatic myocardial ischemia can often cause fatal arrhythmias, and the symptoms disappear after menstruation, but myocardial ischemia is present, which is an important indicator of poor prognosis.
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Hello, the typical symptoms of myocardial ischemia are angina, chest tightness, palpitations, shortness of breath, in addition, unexplained toothache, stomach pain can also be a signal from myocardial ischemia, can not be careless. To cope with the symptoms of myocardial ischemia, patients must establish healthy living habits: eat lightly, maintain a happy mood, avoid overwork, pay attention to keeping warm, and insist on taking medicine.
But if you want to cure the disease, you have to rely on medicine. My friend is a doctor, and the musk pill recommended to me is **myocardial ischemia and angina, which can not only effectively alleviate the symptoms of myocardial ischemia, but also prevent angina pectoris and myocardial infarction when taken for a long time.
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However, there are many manifestations of chest tightness, chest pain, palpitation, shortness of breath, nausea, burning sensation in the back of the esophagus, and can radiate to the back and left shoulder.
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Symptoms of myocardial ischemia: chest tightness, shortness of breath (including dyspnea), chest pain (precordial area), and even dizziness, headache, nausea, vomiting...
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Brain atrophy, dementia, Parkinson's symptoms (women are alert to breast disease and uterine fibroids).
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Myocardial ischemia**Pay attention to a low-fat diet, low-cholesterol diet, and quit smoking. Break time and quality are guaranteed. It is recommended to try oral salvia tablets.
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I have stomach pain in the middle of the night every day, and I get better after I get up, and it doesn't sting during the day, and it doesn't affect my appetite!
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In China, the incidence of cardiovascular disease is high, myocardial ischemia is one of the most common cardiovascular diseases, if not checked in time, myocardial infarction, sudden death and other serious phenomena may occur, so what are the symptoms of myocardial ischemia?
1. Chest tightness and chest pain
This is the most typical symptom of myocardial ischemia. Patients with myocardial ischemia When you are physically tired or nervous, there may be a dull pain in the precordial area, sometimes there may be severe pain, and this pain may also radiate to the shoulder, last for a few minutes, and after rest, it can be slowly relieved. In addition, some patients will experience chest pain and tightness after a full meal, cold, and alcohol.
When this symptom appears, it should be taken seriously, and early examination and ** can prevent sudden death.
2. Palpitation and shortness of breath
Most patients with myocardial ischemia will experience chest tightness, palpitation, and shortness of breath when performing physical activities, which can be relieved by rest on their own. For patients with myocardial ischemia, exercise should be based on the actual situation and according to the ability of the patient.
3. Heart palpitations and breathlessness
When sleeping at night or lying flat during the day, you suddenly feel palpitations, breathlessness, and difficulty breathing, which requires immediate sitting or standing to relieve it.
4. Sudden bradycardia
If myocardial ischemia occurs, the patient may have sudden bradycardia, or a decrease in blood pressure, and even fainting in severe cases, which requires the patient to go to the hospital for examination and **.
5. Fatigue
After work or study, patients with myocardial ischemia are prone to fatigue, weakness, chest tightness, and lack of energy.
6. Left shoulder and left arm pain
If myocardial ischemia progresses further, the patient will experience not only chest pain, but also the left shoulder and the upper part of the left arm.
7. When sleeping, I suddenly feel palpitations and suffocation
During sleep, people with myocardial ischemia may experience sudden palpitations and difficulty breathing, which can only be relieved by sitting up or standing up, and if you find yourself with such symptoms, remember not to ignore it.
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Myocardial ischemia can cause chest tightness, chest pain, or breathlessness.
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Patients with coronary heart disease should maintain a good mood and try to avoid excessive emotions. Daily life should be a combination of work and rest. Pay attention to dietary conditioning, develop good eating habits, eat less foods rich in fat and cholesterol, try to control sugar intake, eat more fruits and vegetables, eat more fish, and drink milk.
Quit smoking and alcohol. Stick to proper physical activity.
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1. Typical symptoms.
1. Sullen pain in the retrosternal or precordial area, or constriction-like pain occurs during exertion or mental tension, and radiates to the left shoulder and left upper arm for 3 5 minutes, which can be relieved by itself after rest, accompanied by heavy sweating.
2. Chest tightness, palpitations, and shortness of breath occur during physical activity, which are relieved by themselves when resting.
3. Exercise-related sore throat, burning, tightness, toothache, etc.
4. Chest pain and tightness after full meals, cold, and drinking.
5. When the pillow is low at night, you feel chest tightness and breathlessness, and you need to lie in a high pillow position to feel comfortable; Sudden chest pain, palpitations, and difficulty breathing while asleep or lying flat during the day require immediate sitting or standing to relieve relief.
6. Palpitation, chest tightness, shortness of breath or chest pain and discomfort during sexual life or straining to defecate.
7. Sudden bradycardia, decreased blood pressure or syncope.
2. Accompanying symptoms.
Mild myocardial ischemia generally has no accompanying symptoms, but as the degree of ischemia increases, arrhythmias, cardiac insufficiency and other manifestations will occur, which can manifest as cardiovascular system, digestive system and systemic symptoms.
1. Arrhythmia-related symptoms: It can be seen in a variety of myocardial ischemic diseases, with myocardial infarction and ischemic cardiomyopathy being the most common, which can have no obvious manifestations, or manifest as chest tightness, palpitations, and may be accompanied by symptoms such as general fatigue, dizziness, and syncope.
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Myocardial ischemia can manifest differently in different patients, most patients present with chest tightness and shortness of breath after exertion, and chest pain in severe cases. The pain may be radiated to the back, neck, and shoulders, and in severe cases, there may be a sense of impending death.
In addition, long-term severe myocardial ischemia can cause ischemic cardiomyopathy, leading to heart failure, which can be manifested as palpitations, shortness of breath, edema of both lower limbs, oliguria and other symptoms after activity.
Some patients with myocardial ischemia may also present with symptoms of arrhythmias, manifested by tachycardia, bradycardia, premature contractions, and other serious arrhythmias. Patients with myocardial ischemia should go to the hospital in time and take medication regularly.
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The main manifestation is chest pain, which is typically located in the precordium or behind the sternum, in the fist-sized or palm-sized range, and is a burning, crushing pain, accompanied by a feeling of suffocation. Myocardial ischemia is not only manifested by angina, but also arrhythmias, such as premature contractions, ventricular tachycardia, and ventricular fibrillation.
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Some patients will have dyspnea, chest tightness, and discomfort in the lying position after myocardial ischemia, which can be gradually relieved after sitting upright.
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Myocardial ischemia. The symptoms are as follows:
1. Most patients with myocardial ischemia mainly present with chest pain, which is usually located in the precordial area or behind the sternum, with a range the size of a fist or a palm, and is a burning and squeezing pain, accompanied by a feeling of suffocation. Myocardial ischemia is not just angina.
Some patients may also experience arrhythmias, such as premature beats.
ventricular tachycardia, ventricular fibrillation;
2. Some patients will have dyspnea, chest tightness, and discomfort in lying position after myocardial ischemia, which can be gradually relieved after sitting upright;
3. The manifestations of myocardial ischemia are ever-changing, and some patients present with epigastric discomfort, toothache or back pain.
If the above discomfort occurs, activity is worsened, rest is reduced, and myocardial ischemia should be considered.
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One is that symptoms of chest tightness, palpitations, and shortness of breath will occur during a lot of physical activity, but they can be relieved by resting for a while.
Second, when tired or nervous, the patient will have dull pain in the retrosternal or precordial area, or constriction-like pain, and may also radiate to the left shoulder and upper arm, the pain is continuous, the time is not very long, and it can be relieved by itself after resting for a while, and some patients often sweat a lot.
The third is that the patient has symptoms of chest pain and tightness after eating, cold, and drinking.
Fourth, when the pillow is relatively low when the patient sleeps, he feels chest tightness and breathlessness, and prefers to sleep on a high pillow; Sudden onset of chest pain, heart palpitations, or difficulty breathing while asleep or lying flat during the day must be relieved immediately by sitting up or standing.
In addition, most patients will have unexplained tiredness, lack of energy, severe myocardial ischemia patients will have sudden bradycardia, blood pressure drop, and even syncope.
Myocardial ischemia refers to a pathological state in which the blood perfusion of the heart is reduced, resulting in a decrease in oxygen supply to the heart, abnormal myocardial energy metabolism, and inability to support the normal work of the heart. The blood supply to the heart is not static, but there are always fluctuations, but these fluctuations are regulated by the body itself, so that the supply and demand of blood are relatively constant, and the heart works properly. If any one of the causes causes myocardial ischemia, the body's regulation cannot meet the needs of the heart, which constitutes myocardial ischemia in the true sense. >>>More
It is important to know that myocarditis is diagnosed with myocarditis, so a patient who is usually diagnosed with myocarditis is not necessarily a true myocarditis. In addition to premature beats, the so-called sequelae are whether it progresses to cardiomyopathy, which will not manifest as insomnia, etc., and will not have chest tightness and myocardial ischemia, and you may need to adjust autonomic nerve dysfunction, which is the manifestation of cardiovascular neurosis.
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