Heart Attack
A heart attack, medically known as a myocardial infarction, occurs when blood flow to part of the heart muscle becomes blocked or severely reduced. Without adequate oxygen-rich blood, the affected heart muscle can become damaged. Prompt medical treatment is essential to restore blood flow and limit heart damage.
At DHEE Hospitals Cardiology, timely evaluation and comprehensive cardiac care can help diagnose heart attack symptoms, manage underlying coronary artery disease and reduce the risk of future cardiovascular complications.
What Is a Heart Attack?
The heart muscle needs a continuous supply of oxygen-rich blood through the coronary arteries. A heart attack commonly occurs when a fatty deposit or plaque within a coronary artery ruptures and a blood clot forms at the site, reducing or blocking blood flow.
The longer the heart muscle remains without sufficient blood supply, the greater the potential for permanent damage. This is why a suspected heart attack requires immediate medical attention.
What Causes a Heart Attack?
The most common cause of a heart attack is coronary artery disease. Plaque can gradually build up inside the coronary arteries, narrowing them and reducing blood flow.
A heart attack can occur when plaque ruptures and a blood clot suddenly blocks the affected artery.
Other, less common causes can also reduce blood flow to the heart, including severe coronary artery spasm or certain conditions affecting the coronary arteries.
Warning Signs of a Heart Attack
Heart attack symptoms can vary between individuals. Common warning signs include:
- Chest pain or discomfort: Pressure, squeezing, tightness, heaviness or fullness in the chest.
- Pain or discomfort spreading to other areas: This may involve one or both arms, the shoulder, back, neck or jaw.
- Shortness of breath: This can occur with or without chest discomfort.
- Cold sweating: Sudden unexplained sweating may accompany other symptoms.
- Nausea or vomiting: Some people may experience digestive symptoms.
- Dizziness or light-headedness: This may occur particularly with weakness or other symptoms.
- Unusual fatigue: Sudden or unexplained tiredness can sometimes be a symptom.
A heart attack does not always cause severe chest pain. Some people may experience mild or less typical symptoms.
Heart Attack Symptoms in Women
Women can experience typical heart attack symptoms such as chest pressure or discomfort. However, some women may also experience symptoms such as shortness of breath, unusual fatigue, nausea, dizziness or discomfort in the back, shoulder or jaw.
These symptoms can sometimes be mistaken for indigestion, stress or tiredness. New or unexplained symptoms should be taken seriously, particularly when several symptoms occur together.
Heart Attack Symptoms in Older Adults and People With Diabetes
Some older adults and people with diabetes may experience less typical symptoms or fewer noticeable symptoms during a heart attack. Breathlessness, weakness, fatigue or dizziness may be more prominent in some cases.
People with diabetes, high blood pressure, high cholesterol, previous heart disease or other cardiovascular risk factors should discuss concerning symptoms with a healthcare professional promptly.
What Should You Do If You Suspect a Heart Attack?
A suspected heart attack is a medical emergency. Do not wait for symptoms to become severe or disappear on their own.
- Call your local emergency medical service immediately.
- Stop physical activity and sit or rest while waiting for medical assistance.
- Avoid driving yourself to the hospital when emergency medical transport is available.
- Follow the instructions provided by emergency medical professionals.
- If the person becomes unresponsive and is not breathing normally, begin CPR and use an AED if available and appropriate.
Rapid medical assessment and treatment can be critical in reducing damage to the heart muscle.
How Is a Heart Attack Diagnosed?
When a heart attack is suspected, doctors use the patient’s symptoms, physical examination and diagnostic tests to determine whether a heart attack has occurred.
Evaluation may include:
- Electrocardiogram (ECG): Records the heart’s electrical activity and can identify changes associated with certain types of heart attack.
- Blood tests: Cardiac biomarkers such as troponin can help identify damage to heart muscle.
- Echocardiogram: May be used to assess heart function and identify areas of abnormal movement.
- Coronary angiography: Can identify blockages or narrowing in the coronary arteries and may help guide treatment.
The specific tests required depend on the patient’s symptoms and clinical condition.
How Is a Heart Attack Treated?
The primary goals of treatment are to restore blood flow to the heart, limit heart muscle damage and prevent further complications. Treatment depends on the type of heart attack, the location and severity of the blockage and the patient’s overall health.
Medications
Depending on the situation, doctors may use medications to reduce clot formation, improve blood flow, control blood pressure or cholesterol and reduce the workload on the heart.
The exact medications and treatment plan are determined by the treating medical team.
Angioplasty and Stent Placement
Coronary angioplasty may be performed to restore blood flow through a blocked or severely narrowed coronary artery. A catheter is guided to the affected artery and a balloon may be used to widen the narrowed area.
A stent may then be placed to help keep the artery open and maintain blood flow.
Coronary Artery Bypass Surgery
In some patients with extensive or complex coronary artery disease, coronary artery bypass grafting (CABG) may be considered. This surgery creates an alternative pathway for blood to reach the heart muscle around narrowed or blocked coronary arteries.
What Happens After a Heart Attack?
Recovery after a heart attack depends on the extent of heart muscle damage, the treatment received and the patient’s overall health.
After the acute treatment, your cardiologist may recommend medications, lifestyle changes, cardiac rehabilitation and regular follow-up to support recovery and reduce the risk of another cardiovascular event.
Cardiac Rehabilitation After a Heart Attack
Cardiac rehabilitation is a structured programme that can support recovery after certain heart conditions and procedures. It may include supervised physical activity, education about heart-healthy lifestyle changes and guidance on managing cardiovascular risk factors.
Your doctor can advise whether cardiac rehabilitation is appropriate for you and when it is safe to begin.
Risk Factors for a Heart Attack
Several factors can increase the risk of coronary artery disease and heart attack, including:
- High blood pressure
- High LDL cholesterol
- Diabetes
- Smoking or tobacco use
- Obesity or excess body weight
- Physical inactivity
- Unhealthy dietary patterns
- Family history of heart disease
- Increasing age
- Previous cardiovascular disease
Some risk factors cannot be changed, but many can be managed through lifestyle measures, regular health checks and appropriate medical treatment.
How Can You Reduce the Risk of a Heart Attack?
Reducing cardiovascular risk involves addressing the factors that can be changed and following an appropriate preventive care plan.
- Keep blood pressure under control.
- Monitor and manage cholesterol levels.
- Manage diabetes and blood sugar levels.
- Stop smoking and avoid tobacco products.
- Maintain a healthy body weight.
- Follow a balanced, heart-healthy diet.
- Stay physically active as advised by your healthcare professional.
- Take prescribed medications as directed.
- Attend regular health and cardiac check-ups when recommended.
Can a Heart Attack Happen Without Chest Pain?
Yes. Some heart attacks may cause mild or no obvious chest pain. Symptoms such as unexplained breathlessness, unusual fatigue, nausea, dizziness or discomfort in the back, arm, shoulder or jaw can occur.
This is one reason it is important not to dismiss sudden or unexplained symptoms, particularly if you have cardiovascular risk factors.
Can a Heart Attack Happen at a Young Age?
Although the risk of heart attack generally increases with age, younger adults can also develop coronary artery disease and experience a heart attack. Risk factors such as smoking, diabetes, high blood pressure, high cholesterol, obesity and family history can contribute to cardiovascular risk.
When Should You Seek Emergency Medical Care?
Seek emergency medical care immediately if you develop new or unexplained chest pressure, squeezing or discomfort, especially when accompanied by shortness of breath, sweating, nausea, dizziness or discomfort spreading to the arm, back, neck or jaw.
Do not wait for symptoms to become severe or attempt to determine the cause yourself. Early medical assessment is important when a heart attack is suspected.
Heart Attack Care at DHEE Hospitals Cardiology
DHEE Hospitals Cardiology provides evaluation and management of cardiovascular conditions, including coronary artery disease and heart attack. Prompt diagnosis, appropriate treatment and ongoing management of cardiovascular risk factors are important components of heart care.
If you are experiencing symptoms that could indicate a heart attack, seek emergency medical care immediately rather than waiting for a routine cardiology consultation.
Frequently Asked Questions About Heart Attack
What is the main cause of a heart attack?
The most common cause is coronary artery disease, where plaque builds up in the coronary arteries. A plaque rupture followed by formation of a blood clot can suddenly block blood flow to the heart muscle.
Can a heart attack be prevented?
Not every heart attack can be prevented, but managing risk factors such as high blood pressure, high cholesterol, diabetes, smoking, physical inactivity and excess body weight can help reduce cardiovascular risk.
Is a heart attack the same as cardiac arrest?
No. A heart attack occurs when blood flow to part of the heart muscle is blocked or severely reduced. Cardiac arrest occurs when the heart suddenly stops pumping blood effectively. A heart attack can sometimes lead to cardiac arrest, but the two conditions are different.
Can you recover fully after a heart attack?
Recovery varies from person to person and depends on factors such as the extent of heart muscle damage, how quickly treatment was provided and overall health. Following the recommended treatment, medications, lifestyle measures and follow-up plan can support recovery.
Does having one heart attack increase the risk of another?
A previous heart attack is an important cardiovascular risk factor. Long-term management of cholesterol, blood pressure, diabetes and other risk factors, together with prescribed treatment and lifestyle changes, can help reduce future cardiovascular risk.
