Heart Attack

UPDATED ON: 20 Nov 2023, 10:35 AM
Medically Reviewed by

What is Heart Attack?

A heart attack is a life-threatening condition in which the supply of blood to the heart is suddenly and severely reduced or cut off, causing the muscle to die from lack of oxygen. It is one of the most common causes of death worldwide.

A woman pointing at her heart
Aerial Yoga lowers the risk of heart attacks significantly. Image courtesy: Adobe Stock

According to the World Health Organization (WHO), cardiovascular diseases account for 17.9 million deaths worldwide each year, making them the leading cause of mortality. In fact, over four out of five cardiovascular diseases are due to heart attacks and strokes. Heart attacks, also known as myocardial infarction, are the result of a coronary artery blockage that impairs the flow of oxygen-rich blood to the heart. The accumulation of cholesterol and other substances may be the cause of this blockage. Since a heart attack is a medical emergency, it could be fatal if blood flow is not restored quickly.

Causes of Heart Attack

A heart attack occurs due to a sudden, incomplete or partial blockage in the artery supplying blood to the heart. If the blood flow is not restored on time, it can result in permanent damage to the heart muscles. The causes of a heart attack include:

  • Poor diet: Consuming high amounts of saturated fats, trans fats, and cholesterol increases the risk of plaque buildup in arteries, leading to atherosclerosis—a major contributor to heart attacks.
  • Physical inactivity: Sedentary lifestyles contribute to obesity and other risk factors. Regular exercise helps maintain a healthy weight, lower blood pressure, and improve overall cardiovascular health.
  • Smoking: Tobacco smoke contains chemicals that damage blood vessels and decrease good cholesterol. Smoking is a significant risk factor for heart attacks.
  • Excessive alcohol consumption: Heavy drinking can elevate blood pressure and contribute to cardiomyopathy, a condition where the heart muscle weakens.
  • Hypertension (high blood pressure): Persistent high blood pressure puts strain on the heart and arteries, making them more susceptible to damage.
  • Diabetes: Uncontrolled diabetes can damage blood vessels and the heart muscle, increasing the likelihood of heart attacks.
  • Stress: Chronic stress can contribute to heart disease by elevating blood pressure and encouraging unhealthy coping mechanisms like overeating or smoking.
  • Genetics: A family history of heart disease can predispose individuals to similar issues, highlighting a genetic component in heart attack risk.
  • Age: The risk of heart attack increases with age, and factors such as hormonal changes and the cumulative effect of lifestyle choices become more pronounced.
  • Gender: Men generally face a higher risk of heart attacks, but the risk for women increases after menopause.

Key Facts About Heart Attack

Major Symptoms
  • Chest pain or discomfort
  • Radiating pain
  • Shortness of breath
  • Cold sweats
  • Nausea or vomiting
  • Fatigue
  • Dizziness or fainting
  • Anxiety or restlessness
  • Irregular heartbeat
  • Cyanosis
Necessary Health Tests
  • Medical history
  • Symptoms assessment
  • Physical examination
  • Chest X-ray
  • Blood tests
  • Electrocardiogram (ECG/EKG)
  • Echocardiogram
  • Coronary Angiography
  • Cardiac CT or MRI
  • Stress Test
Treatment
  • Call for emergency medical services immediately.
  • If trained, perform cardiopulmonary resuscitation (CPR) with an emphasis on chest compressions. It helps ensure the heart receives an adequate supply, reducing strain.
  • Chewing aspirin helps thin the blood and improve blood flow to the heart. It’s a common first-aid measure.
  • Nitroglycerin may be given to improve blood flow, and pain relievers can alleviate discomfort. But only after the doctor’s approval.

Symptoms of Heart Attack

Recognizing these symptoms promptly and seeking medical attention is crucial for the best outcome in a potential heart attack situation.

  • Chest pain or discomfort: The most common symptom is persistent, gripping pain or pressure in the chest, often described as squeezing or fullness.
  • Radiating pain: The pain may extend to the arms, especially the left arm, jaw, neck, or back. This radiating discomfort is a classic sign of a heart attack.
  • Shortness of breath: Difficulty breathing or sudden shortness of breath can occur, often accompanying chest discomfort.
  • Cold sweats: Profuse sweating, particularly cold sweats, may be experienced even without physical exertion.
  • Nausea or vomiting: Feeling nauseous or actually vomiting can be a symptom, sometimes accompanied by indigestion or heartburn-like symptoms.
  • Fatigue: Unexplained extreme fatigue or weakness, often sudden in onset, can signal a heart attack.
  • Dizziness or fainting: Light-headedness, dizziness, or fainting may occur due to decreased blood flow to the brain.
  • Anxiety or restlessness: A feeling of impending doom or extreme anxiety may be present, sometimes without an obvious cause.
  • Irregular heartbeat: Some individuals may experience palpitations or irregular heartbeats during a heart attack.
  • Cyanosis: The skin may turn pale, gray, or ashen, especially around the lips or extremities, due to inadequate oxygenation

Diagnosis of Heart Attack

Diagnosing a heart attack involves a combination of clinical evaluation, medical history, and various diagnostic tests. Here’s a concise overview:

  • Medical history: Assessing the patient’s medical history, including risk factors like smoking, diabetes, and family history of heart disease.
  • Symptoms assessment: Inquiring about symptoms such as chest pain, shortness of breath, and fatigue.
  • Physical examination: Checking vital signs like blood pressure, heart rate, and respiratory rate
  • Chest X-ray: Assessing the heart and lungs to rule out other potential causes of symptoms.
  • Blood tests: Measuring cardiac biomarkers like troponin and creatine kinase-MB, released into the bloodstream during a heart attack.
  • Electrocardiogram (ECG/EKG): Recording the heart’s electrical activity to identify abnormal patterns indicative of a heart attack.
  • Echocardiogram: Using sound waves to create a detailed image of the heart’s structure and function.
  • Coronary angiography: Injecting contrast dye into coronary arteries to visualize blood flow and locate blockages or narrowed arteries.
  • Cardiac CT or MRI: Providing detailed images of the heart to assess its structure, function, and blood vessels.
  • Stress test: Monitoring the heart’s response to physical exertion, helping to identify coronary artery disease

Prompt and accurate diagnosis is crucial for timely intervention and improving outcomes in cases of heart attacks.

Treatment of Heart Attack

In the event of a heart attack, immediate action is crucial. You can do these things in such a situation:

  • Call for emergency medical services immediately.
  • If trained, perform cardiopulmonary resuscitation (CPR) with an emphasis on chest compressions. It helps ensure the heart receives an adequate supply, reducing strain.
  • Chewing aspirin helps thin the blood and improve blood flow to the heart. It’s a common first-aid measure.
  • Nitroglycerin may be given to improve blood flow, and pain relievers can alleviate discomfort. But only after the doctor’s approval.

Along with this, try to stay calm, and if possible, have the person sit and rest while awaiting medical help. Also, avoid driving to the hospital unless absolutely necessary. And do not forget that a quick response can increase the chance of survival so do not ignore your signs of a heart attack.

Heart Attack Related FAQs

What is a silent heart attack?

A silent heart attack, also known as an asymptomatic heart attack, occurs when a person experiences a heart attack without the typical chest pain or other noticeable symptoms. It can go unnoticed, making it crucial to be aware of other subtle signs like fatigue or shortness of breath.

Is a heart attack painful?

Yes, a heart attack is often associated with chest pain or discomfort. The pain may also radiate to the arms, neck, jaw, shoulder, or back.

Is it gas or a heart attack?

It can be challenging to differentiate, as symptoms like chest pain and shortness of breath can occur with both. However, persistent symptoms or those worsening over time should prompt immediate medical attention.

What is the difference between cardiac arrest and heart failure?

Cardiac arrest is a sudden loss of heart function, while heart failure is a chronic condition where the heart can't pump blood effectively. Cardiac arrest is an emergency, and heart failure requires ongoing management.

What is the first sign of a heart attack?

The most common sign is chest discomfort or pain. Other symptoms may include shortness of breath, nausea, lightheadedness, and discomfort in other upper body areas.

When should I go to a doctor for chest pain?

If you experience persistent or intense chest pain, especially accompanied by other symptoms like shortness of breath, seek immediate medical attention. Don't wait, as prompt intervention can be crucial in the case of a heart attack.

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