Not everyone gets a warning, though. “In some cases, especially when the arrest is caused by a sudden electrical disturbance in the heart, collapse can happen without prior symptoms,” he added.

Are you witnessing any of the symptoms? (Photo: Getty Images/Thinkstock)

If someone is alone, is there enough time to call for help?

It depends on the situation. If warning symptoms like severe chest pain, intense breathlessness, or palpitations occur, there may be a brief but critical window to seek help. “Calling emergency services right away at the first sign of alarming symptoms can save lives. Delaying for even a few minutes can make a difference,” said Dr Sangoi.

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Once the heart goes into cardiac arrest and the person loses consciousness, there is not much that can help. “Brain injury can start within 4 to 6 minutes without blood flow. This is why recognising warning signs early is vital,” said Dr Sangoi.

Is there enough time? (Photo: Quora)

What to note?

Dr Sangoi stressed that if you feel something is seriously wrong, especially persistent chest pain, sudden sweating, dizziness, or a feeling that you might faint, don’t wait it out. “Call emergency services immediately, unlock the door if you can, and let someone nearby know. If you are at high risk due to heart disease, diabetes, or a family history of sudden cardiac death, regular check-ups and timely evaluation of symptoms are even more important,” said Dr Sangoi.

DISCLAIMER: This article is based on information from the public domain and/or the experts we spoke to. Always consult your health practitioner before starting any routine.