When the heart weakens and pumps inefficiently, fluid backs up into the lungs — the patient feels they are "breathing through water". Acute oedema is a true emergency, but it's usually preceded by days of warning signals that can be caught early.

In short — what to do

  1. Call 998 immediately — acute oedema is not treated at home.
  2. Sit them up with legs dangling over the bed's edge — upright with legs down pulls fluid away from the lungs.
  3. Open a window and loosen tight clothing.
  4. No water or food, and keep them as calm as possible.
  5. Gather their medicines and reports to hand to the team.

Videos for this topic

A heart patient "drowning" while standing? Acute pulmonary oedema

23 seconds

The biggest mistake is laying them flat to rest: lying down sends the fluid back into the lungs. Sit them upright with the legs hanging down, and do not wait for pink frothy sputum, which is a late sign. Sitting up is only first aid: call an ambulance at once, because pulmonary oedema is not treated at home.

Watch it on Instagram

Abu Saleem learned the lesson: sudden breathlessness in a heart patient

13 seconds

Do not lay them on the sofa or bed. Sit them straight up with the legs hanging down, and call an ambulance as fast as you can.

Waking at night gasping and sleeping propped high — a cardiac alarm not to ignore
Waking at night gasping and sleeping propped high — a cardiac alarm not to ignore
The full details

Early warning signs (days before the crisis)

  • Breathlessness on exertion that used to be tolerable.
  • Needing more pillows to sleep, or waking at night gasping.
  • Increasing feet and ankle swelling.
  • Rapid weight gain (2–3 kg in days) — fluid, not fat.
  • A new night cough.

In the acute crisis: what to do

  1. Call 998 immediately — acute oedema is not treated at home.
  2. Sit them up with legs dangling over the bed's edge — upright with legs down pulls fluid away from the lungs.
  3. Open a window and loosen tight clothing.
  4. No water or food, and keep them as calm as possible.
  5. Gather their medicines and reports to hand to the team.

998 now if

  • Severe gasping, "bubbling" breathing, or pink frothy sputum.
  • Blue lips, cold sweat, or confusion.
  • Accompanying chest pain — a heart attack may be the trigger.

For the heart patient's family

The bathroom scale is the best early-alarm device: daily weight at the same time — a two-kilo jump in two days deserves a call to the doctor before it becomes an emergency night.

This content is for general health education only and is not medical advice. Always seek guidance from a qualified healthcare professional. In an emergency, call 998.

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