Sexual Health

What Is A Heart Attack? What Causes A Heart Attack?

If the heart muscle does not have enough blood (and consequently oxygen) it dies and a heart attack occurs. Another name for a heart attack is myocardial infarction, cardiac infarction and coronary thrombosis. According to Medilexicon"s medical dictionary, a heart attack is "infarction of a segment of heart muscle, usually due to occlusion of a coronary artery". (Infarction = the process whereby an area of dead tissue is caused by a loss of blood supply). A heart attack usually happens when a blood clot develops in one of the blood vessels that lead to the heart muscle (coronary arteries). The clot, if it is big enough, can stop the supply of blood to the heart. Blood supply to the heart can also be undermined if the artery suddenly narrows, as in a spasm. What are the symptoms of a heart attack? *Chest discomfort, mild pain *Coughing *Crushing chest pain *Dizziness *Dyspnea (shortness of breath) *Face seems gray *A feeling of terror that your life is coming to its end *Feeling really awful (general feeling) *Nausea *Restlessness *The person is clammy and sweaty *Vomiting If you experience these symptoms, or witness another person with them, call the emergency services immediately. In the United Kingdom the telephone number is 999, in the USA and Canada it is 911, Australia 000, and New Zealand 111. Many cell phones" emergency number is 112. Interesting related article What is heart failure? What causes heart failure? What is the difference between Diabetes Type 1 and Diabetes Type 2? What is hypertension? What causes hypertension? What are statins? How statins work and the side effects of statins What is cholesterol? What causes high cholesterol? What is a stroke? What causes a stroke? What is embolism? What are the different types of embolism? What is deep vein thrombosis (DVT)? What is fat? How much fat should I eat? What is salt? How much salt should I eat? A person who is having a heart attack usually feels the pain in his/her chest first. This pain then spreads to the neck, jaw, ears, arms, and wrists. With some patients, the pain also makes its way into the shoulder blades, the back, and the abdomen. The pain does not feel any better if the patient changes position, rests, or lies down. Often it is a constant pain, but it can come and go. Patients describe the pain as one of pressure, something squeezing. The pain can last from a few minutes to many hours. People with diabetes, and/or those over the age of 75 may experience a "silent heart attack". This is one that occurs with no pain at all. Studies indicate that about one fifth of mild heart attacks are not diagnosed. If this is the case, there are many people who are suffering progressive heart muscle damage because it is not being treated. What are the causes of a heart attack? *Age - this is considered to be the largest risk factor. When a man is over 45 years, and the woman is over 55 years of age, their risk of having a heart attack starts to rise significantly. *Angina - angina is an illness where not enough oxygen is reaching the patient"s heart. This raises the risk of a heart attack. In some cases a diagnosis of angina was wrong - it could have been a mild heart attack instead. The main difference between a heart attack and angina is that the patient with angina will feel better about 15 to 30 minutes after taking medication, while the heart attack patient won"t. *Blood cholesterol levels - if a person"s blood cholesterol levels are high, he/she runs a higher risk of developing blood clots in the arteries. Blood clots can block the supply of blood to the heart muscle, causing a heart attack. *Diabetes - people with diabetes have a higher risk of developing several diseases and conditions, many of them contribute to a higher risk of heart attack. *Diet - a person who consumes large quantities of, for example, animal fats, or saturated fats, will eventually have a higher risk of having a heart attack. *Genes - you can inherit a higher risk of heart attack from your parents, and/or their parents. *Heart surgery - patients who have had heart surgery have a higher risk of having a heart attack. *Hypertension (high blood pressure) - this could be due to lack of physical activity, overweight/obesity, diabetes, genes, and some other factors. *Obesity, overweight - as more and more people are overweight, especially children, experts believe heart attacks will become more common in future (if the overweight children become overweight adults). *Physical inactivity - people who do not exercise have a much higher risk of having a heart attack, compared to people who exercise regularly. *Previous heart attack - anybody who has already had a heart attack is more likely to have another one, compared to other people. *Smoking - people who smoke heavily or regularly run a much higher risk of heart attack, compared to people who never smoked and those who gave up. Smoking regularly means smoking every day. How is a heart attack diagnosed? Any doctor, nurse, or health care professional, will send a patient straight to hospital if he/she suspects the person may have a heart attack. In hospital several tests may be done: *ECG (Electrocardiograph) An ECG is a medical device that monitors the electrical activity of the heart muscles. Our hearts produce a small electric signal at every beat. A heart specialist (cardiologist) can use this device to see how well the heart is functioning, whether there is any damage to the heart muscle, or abnormalities with the heart rhythm. A doctor can tell, when checking the data coming from the ECG, whether the patient has had a heart attack recently, or even earlier. Visit our specialized news sections Cardiovascular / Cardiology News Cholesterol News Statins News Heart Disease News Hypertension (High Blood Pressure) News Stroke News Obesity / Weight Loss News Vascular News Sleep / Sleep Disorder News Smoking / Quit Smoking News *Cardiac enzyme tests When a person has a heart attack some enzymes make their way into the bloodstream. A blood test can detect these enzymes. Usually, enzyme blood levels are checked regularly over a few days. *Chest x-ray This can be useful to see if the heart has any swelling. What are the treatments for a heart attack? The faster the heart attack patient can be treated, the more successful his/her treatment will be. These days, the majority of heart attacks can be treated effectively. It is crucial to remember that the patient"s survival depends largely on how quickly he can be taken to hospital. Treatment during a heart attack *CPR (cardio-pulmonary resuscitation) Some heart attack patients stop breathing; they do not move or respond when spoken to or touched, they may also be coughing. If this is the case CPR should be started straight away. This involves: Manual chest compressions and mouth-to-mouth 30 chest compressions to the heart followed by two mouth-to-mouth resuscitation breaths (mouth-to-mouth) Defibrillator This is a CPS medical device. It sends electric shocks across the patient"s chest - the aim is to use electricity to shock the heart back into proper activity. *300mg of Aspirin A 300mg dose of aspirin is often given to patients during a heart attack. Aspirin will help stop the clot in the artery from growing. *Thrombolytics These dissolve the blood clots. These include alteplase and streptokinase. They should be injected into the patient as soon as possible. If the blood supply to the muscle can be restored soon enough, much of the affected heart muscle will survive. *Painkillers Morphine is sometimes injected into the patient to control the pain and discomfort. Experts say this also reduces anxiety. Treatment after the heart attack Most patients will need several different medications after their heart attack. The aim being to prevent future heart attacks from occurring. *Aspirin and other Anti-platelets Our blood has platelets. These are tiny particles that help the blood to clot. They can eventually, if they are very sticky, stick to fatty deposits, or plaques, and form a thrombosis. A thrombosis is a clot. A thrombosis in a coronary artery can cause a heart attack. Anti-platelets reduce the stickiness of the platelets. Patients are often prescribed a daily 75mg dose of aspirin - this is called low-dose aspirin. Those who have stomach ulcers may be given medication to prevent the aspirin from damaging their stomachs. Patients who suffer from asthma may be prescribed clopidogrel, rather than aspirin. *Beta-blockers These drugs make the heart beat more slowly and with less force, thus easing the heart"s workload. They also stabilize the heart"s electrical activity. Examples include metoprolol, propranolol, timolol, and atenolol. *ACE (Angiotensin-converting enzyme) inhibitors These drugs help ease the workload on the heart by opening up blood vessels and lowering blood pressure. Experts say ACE inhibitors also protect the heart from further damage. Patient will have a blood test to make sure their kidneys are working properly before starting on this type of medication. Then, about ten days after starting treatment, the patient will undergo further tests to make sure his/her kidneys are still working fine. Over a period of about 3 weeks the patient"s dose is gradually increased. Examples of ACE inhibitors include lisinopril, perindopril and ramipril. *Statins Statins make the liver produce less cholesterol, consequently lowering blood cholesterol levels. Patients with high cholesterol levels have a higher risk of developing fatty deposits in their blood vessels, especially their arteries. Statins include atorvastatin, fluvastatin, pravastatin, rosuvastatin and simvastatin. *Surgery after a heart attack If the patient"s heart has been severely damaged he/she may need to be operated on. The most common surgeries performed on heart attack patients are: *Angioplasty This can be performed either

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