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Diastolic dysfunction: assessment and implications on the single ventricle circulation.

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Diastolic dysfunction (DD) is common in single ventricle (SV) patients and linked to poor outcomes. New methods are emerging to better assess DD and guide treatment in these complex Fontan patients.

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Area of Science:

  • Cardiology
  • Pediatric Cardiology
  • Congenital Heart Disease

Background:

  • Single ventricle (SV) physiology requires palliative Fontan circulation.
  • Heart failure is a common long-term complication in SV patients.
  • Diastolic dysfunction (DD) significantly impacts outcomes but is challenging to assess.

Purpose of the Study:

  • To review current literature on assessing DD in SV patients.
  • To explore the relationship between DD and clinical outcomes.
  • To highlight emerging techniques for DD evaluation.

Main Methods:

  • Literature review of recent studies on DD in SV.
  • Analysis of diagnostic approaches including provocative testing and advanced imaging.
  • Exploration of novel technologies like ultrafast ultrasound (UFUS).

Main Results:

  • DD is prevalent in SV patients and associated with adverse outcomes.
  • Provocative testing and strain imaging improve DD detection.
  • Emerging technologies like UFUS offer new insights into myocardial and hemodynamic properties.

Conclusions:

  • Assessing DD in SV patients remains complex, requiring integrated parameter analysis.
  • New techniques show promise for improved DD assessment and treatment monitoring.
  • Further research is needed to refine DD characterization and management strategies.