Cardiac insufficiency – when the body slows down

Things rarely start with a bang, rather with small everyday adjustments: taking shorter distances and more breaks, walking at a slower pace. Heart failure does not present a sudden change, but a process – one that many people only recognise as a disease at a late stage.

Sergei Fink

18 June 2026

A medical professional in a blue coat shows a bearded man in a clinic a tablet with medical data. The man listens attentively, and they appear to be having a conversation about his health.
Personal counselling supports people with obesity on their path to sustainable treatment. (Symbolic image: Adobe Stock)

At first, most people do not notice that anything has changed. They change their behaviour, not how they explain it. 

They stop to catch their breath. 
They avoid taking the stairs. 
They sleep with an extra pillow.
Not because they are sick, rather because it feels easier. 

Heart failure is not cardiac arrest
The term sounds more dramatic than it actually is. Heart failure does not mean that the heart stops beating. It means that it no longer pumps enough blood to optimally supply the body. 

This can manifest itself in the following ways: 

  • Shortness of breath during exertion or when lying down 
  • Getting tired quickly 
  • Swollen legs or feet 
  • Weight gain due to fluid retention 
  • Waking up at night with difficulty breathing 

Many symptoms are unremarkable, which often leads to them being ignored. 

Why heart failure is good at hiding itself
Heart failure often develops gradually as a secondary effect of other diseases: high blood pressure, cardiac arrest, diabetes, irregular heartbeat.
The body will compensate for a long time. And as long as it can do that, everything seems to be fine. It is only when these reserves are depleted that everyday life becomes difficult. The problem lies not in a lack of medical treatment, but in the overlap of symptoms with those of other illnesses, and in some cases, not having them checked out.  

Medical diagnostics: less effort, more clarity
Heart failure can be easily diagnosed: consultation, medical examination, blood tests, ultrasound. While this is not a high-tech marathon, a focused approach and regular check-ups can provide clarity. The earlier it is diagnosed, the greater the scope for taking action, both medically and in the patient’s day-to-day life. 

Treatment does not mean a standstill
Many people think: heart failure – that’s it then.
In reality, things are often different because modern medicine can: 

  • Significantly alleviate symptoms 
  • Reduce hospital stays 
  • Improve quality of life 
  • Extend life 

Exercise is not off limits, but rather part of the patient’s treatment. Medication can also have a supportive effect. 

Heart failure is one of the most common reasons why older people end up in hospital. Not because of one-off emergencies, but due to a recurring deterioration of their symptoms. This demonstrates that good care does not begin in hospital, but well before that. Coordination, early adjustment of treatment and patients who are aware of their symptoms relieve the pressure on the system more than any individual measure. Compassana’s symptom checker can also help to identify symptoms at an early stage.

Please note: 
This article is for general information purposes only and is not intended to be a substitute for medical advice. If you or a loved one is suffering from persistent shortness of breath, swelling or lack of energy, please consult a doctor or specialist.