Ultimate Diagnostics Medical laboratory

Understanding Difference Between Heart Attack vs Heart Arrest vs Heart Failure

Understanding the difference between heart attack, heart arrest, and heart failure is critical for both exams and real life.
A heart attack happens when blood flow to the heart muscle is blocked, causing muscle injury while the heart may still beat.
A heart arrest is an electrical failure where the heart suddenly stops, leading to no pulse and no breathing.
Heart failure means the heart is still beating but pumps weakly, causing fluid buildup, breathlessness, and swelling.

These conditions are often confused, but they are not the same. A heart attack can trigger heart arrest or lead to heart failure, yet each needs different management. This visual explains the differences clearly in a simple, memorable way.