Refractory Heart Failure

Introduction

Refractory heart failure (RHF) is the most advanced stage of heart failure (HF), where symptoms persist despite optimal medical therapy. Managing this condition is challenging and requires a multidisciplinary approach.

Causes and Risk Factors

  • Progression from chronic heart failure
  • Ineffective response to standard treatments
  • Severe comorbidities, such as kidney disease, diabetes, or pulmonary hypertension
  • Frequent hospitalizations leading to worsening cardiac function

Symptoms

  • Severe shortness of breath (dyspnea) at rest
  • Persistent fluid retention (swelling in legs, ascites)
  • Fatigue and weakness
  • Frequent hospital admissions for decompensation

Diagnosis

  • Echocardiography: To assess ejection fraction and heart structure
  • Blood tests: Including BNP/NT-proBNP to evaluate heart stress
  • Right heart catheterization: To measure pulmonary pressures
  • Cardiac MRI or CT: To assess structural abnormalities

Treatment Strategies

  1. Optimization of Medical Therapy
    • Increasing or adjusting guideline-directed medications such as ARNIs, beta-blockers, MRAs, and SGLT2 inhibitors
  2. Advanced Therapies
    • Cardiac resynchronization therapy (CRT) if indicated
    • Left ventricular assist device (LVAD) for mechanical support
  3. Heart Transplantation
    • Considered for eligible patients with end-stage HF
  4. Palliative Care
    • Symptom management and improving quality of life, especially in patients ineligible for advanced interventions

Prognosis

Without advanced interventions, RHF has a high mortality rate. Therefore, early referral to specialized heart failure centers is crucial.

Conclusion

Refractory heart failure is a critical condition that requires aggressive and specialized management. Patients should be under the care of a multidisciplinary team, considering advanced therapies when appropriate.

Source recommendations

1. 2022 AHA/ACC/HFSA Guideline for the Management of Heart Failure

  1. https://www.ahajournals.org/doi/10.1161/CIR.0000000000001063
  2. https://pubmed.ncbi.nlm.nih.gov/35378257/
  3. https://www.sciencedirect.com/science/article/pii/S0735109721083959
  4. https://professional.heart.org/en/science-news/2022-guideline-for-the-management-of-heart-failure
  5. https://www.acc.org/Latest-in-Cardiology/ten-points-to-remember/2022/03/29/19/53/2022-AHA-ACC-HFSA-Heart-Failure-Guideline-gl-hf

2. 2021 ESC Guidelines for the Diagnosis and Treatment of Acute and Chronic Heart Failure

  1. https://pubmed.ncbi.nlm.nih.gov/34447992/
  2. https://www.escardio.org/Guidelines/Clinical-Practice-Guidelines/Acute-and-Chronic-Heart-Failure
  3. https://academic.oup.com/eurheartj/article/42/36/3599/6358045
  4. https://onlinelibrary.wiley.com/doi/full/10.1002/ejhf.2333
  5. https://academic.oup.com/eurheartj/article/44/37/3627/7246292

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