Advanced heart failure follows a particular trajectory: a progressive deterioration punctuated by acute episodes, each leaving the patient a little more weakened than the previous one. Unlike other terminal illnesses where the decline is more linear, this alternation between phases of relative stability and sudden decompensations makes recognizing the end of life more difficult for both relatives and caregivers. Identifying the signals of irreversible worsening helps guide care decisions and prepare appropriate support.
Trajectory of terminal heart failure: a stepwise decline
Most content describes the end of life as a distinct phase, almost detached from the rest of the illness. The ESC 2026 recommendations adopt a different perspective: the end of life is a continuum of the trajectory, not a sudden shift. The patient does not transition from a “stable” state to a “terminal” state overnight.
What characterizes advanced heart failure is the recurrence of close hospitalizations for decompensation. Each episode leads to additional functional loss, and recovery between crises becomes increasingly incomplete. The heart, already weakened, gradually loses its ability to maintain a minimal blood flow at rest.
This stepwise pattern explains why families struggle to pinpoint the moment when the disease shifts. A patient may seem to recover after a hospitalization, only to collapse a few weeks later. Understanding the end-of-life symptoms in heart failure first requires accepting this unpredictability inherent to heart disease.
Physical signs of irreversible worsening in heart failure
Some symptoms, taken in isolation, resemble those of simple decompensation. It is their persistence despite optimized treatments that signals a turning point.
Refractory dyspnea and profound fatigue
Shortness of breath at rest, which no longer responds to diuretics or oxygen therapy, is one of the most reliable markers. The patient can no longer lie flat and must remain in a semi-sitting position at all times. This refractory dyspnea persists despite optimized treatments.
The associated fatigue goes beyond simple tiredness. The patient gradually abandons daily activities (washing, eating, talking) not due to a lack of will, but because their body no longer has enough energy to perform them.
Diuretic-resistant fluid retention
Swelling in the lower limbs, ascites (fluid accumulation in the abdomen), and rapid weight gain are common in heart failure. In the terminal phase, fluid retention no longer responds to high-dose diuretics. The doctor increases dosages, combines several medications, and sometimes administers diuretics intravenously, without lasting results.
This resistance to decongestive treatments often marks the transition to refractory heart failure, the final stage of classification.
Altered consciousness and confusion
The decrease in cardiac output reduces blood flow to the brain. The patient becomes drowsy, confused, and sometimes disoriented in time and space. These episodes of confusion progressively worsen and become almost permanent in the last days.
Underestimated symptoms in the last weeks of life
Public content often focuses on shortness of breath and swelling. Other manifestations, less well-known, deserve attention.
- Chest pain or diffuse pain affects a significant proportion of patients with advanced heart failure. The ESC 2026 recommendations emphasize that this pain is often perceived by caregivers but too rarely treated adequately.
- Anorexia and cardiac cachexia result in marked muscle mass loss. The patient no longer feels hunger, and forced feeding sometimes worsens the digestive discomfort related to abdominal congestion.
- Anxiety and psychological distress accompany the sensation of suffocation. The vicious circle between dyspnea and anxiety is well documented, yet anxiolytic treatments remain underused in this population.
- Sleep disturbances, with frequent awakenings related to orthopnea (inability to breathe while lying flat), fragment rest and worsen overall exhaustion.
Integrated palliative care and end-of-life decisions in cardiology
The ESC 2026 recommendations advocate for structured access to a multidisciplinary palliative care team integrated into the cardiac pathway. The central point: this palliative care should begin alongside active treatments (circulatory support, continuous inotropes, evaluation for transplantation), and not only when all therapeutic options are exhausted.
This approach changes the usual timeline of decisions. End-of-life care planning is discussed while the patient still has the capacity to express their wishes, not in the urgency of a final decompensation.
The question of the implantable cardioverter-defibrillator
A specific issue in cardiology concerns the ICD (implantable cardioverter-defibrillator). Deactivating the ICD at the end of life prevents inappropriate and painful shocks. The decision-making process is complex: some patients perceive their device as a safety net, and the discussion about its deactivation sometimes causes significant distress.
Available data show that this conversation often comes too late, sometimes in the very last hours. Integrated palliative care teams allow this topic to be addressed earlier, when the patient can still participate in the reflection.
Opioids and management of terminal dyspnea
The use of low-dose morphine to relieve refractory dyspnea remains a topic of discussion among practitioners. Recommendations acknowledge its effectiveness in reducing the sensation of suffocation, but field feedback varies on appropriate dosing protocols depending on the patient’s profile.
The fear of hastening death still holds back some prescribers, while clinical data indicate that appropriately dosed opioids do not shorten life in this context.
Recognizing the terminal phase of heart failure relies less on an isolated symptom than on a constellation of converging signs: refractory dyspnea, resistance to diuretics, increasing confusion, rapid loss of autonomy. The early integration of palliative care into cardiac management remains the most documented lever to reduce patient suffering and support relatives during this period.
