Difference Between Heart Attack and Cardiac Arrest: Causes, Symptoms & Treatment
When it comes to heart emergencies, two words tend to create confusion — heart attack and cardiac arrest. While both are dangerous, they are not the same. Knowing the difference between heart attack and cardiac arrest can save lives by procuring timely treatment.
What is a Heart Attack?
Heart attack occurs when the blood supply to a region of the heart is cut off, most commonly as the result of a clot in the coronary arteries. When heart muscle has insufficient oxygen, it starts to become damaged. Typical symptoms are:
- Chest pressure or pain
- Pain radiating to the arm, jaw, or back
- Shortness of breath
- Cold sweats or dizziness
Someone experiencing a heart attack is generally awake and aware, but needs immediate medical care. Prompt treatment can stop permanent damage.

What is Cardiac Arrest?
Cardiac arrest is not the same. Cardiac arrest happens when the heart actually stops working because of an electrical disturbance. This stops blood flowing to the brain and rest of the body. Signs are immediate:
- Collapsed suddenly
- There is no pulse or breathing
- Loss of awareness
Cardiac arrest is a medical emergency in which every second counts. Sudden CPR and defibrillation are life-saving measures until the patient can be treated in an advanced manner.
Differences Between Heart Attack and Cardiac Arrest
Cause: Blocked blood flow causes heart attack; electrical disturbance causes cardiac arrest.
Symptoms: Heart attack occurs slowly with warning signs; cardiac arrest happens suddenly and unexpectedly.
Outcome: Heart attack can cause cardiac arrest if not immediately treated.
👉 Understanding these key differences between heart attack and cardiac arrest is crucial for timely recognition and life-saving treatment.

Treatment & Prevention
For Heart Attack: Drugs, lifestyle modification, and in some instances, surgery or angioplasty.
For Cardiac Arrest: CPR immediately, defibrillation, followed by treatment at the hospital.
Precautionary measures such as a healthy diet, regular exercise, periodic check-ups and knowing the difference between heart attack and cardiac arrest can go a long way in curbing risks.
Takeaway
While both conditions are life-threatening, the difference between heart attack and cardiac arrest lies in their causes, symptoms, and required emergency responses. Awareness can empower you to act quickly and potentially save a life.
If you or a loved one is at risk of heart disease, don’t wait for an emergency. Visit Divine Heart Multispeciality Hospital for expert cardiac care, advanced diagnostics, and round-the-clock emergency services.
Address: Viraj Khand Rd, Viraj Khand – 5, Institutional Area, Gomti Nagar, Lucknow, Uttar Pradesh 226010
Phone: 0522 272 1992

