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The basics of ventricular function
1Department of Paediatrics, The Royal Brompton and Harefield NHS Trust, and The National Heart and Lung Institute, London, UK. d.penny@rbh.nthames.nhs.uk
Insights
Understanding ventricular function in congenital heart disease is key. This review simplifies cardiac cycle mechanics to explain ventricular performance for non-experts, aiding assessment without complex math.
Area of Science:
- Cardiology
- Physiology
Background:
- Congenital heart disease (CHD) necessitates robust assessment of ventricular function.
- Existing ventricular function indexes are numerous but not universally ideal.
- Advanced mathematical models are often used, posing challenges for non-specialists.
Purpose of the Study:
- To provide basic concepts of ventricular function for non-experts.
- To explain ventricular systolic and diastolic performance using cardiac cycle mechanics.
- To highlight the ventricle's role in cardiovascular and metabolic homeostasis.
Main Methods:
- Review of the mechanics of the cardiac cycle.
- Analysis of ventricular systolic and diastolic performance.
- Description of regional function variability's impact on overall performance.
Main Results:
- Ventricular function can be understood through basic cardiac cycle mechanics.
- Non-mathematical approaches offer valuable insights into ventricular performance.
- Regional variability significantly influences overall ventricular function.
Conclusions:
- A mechanics-based approach simplifies ventricular function assessment in CHD.
- Understanding cardiac cycle events is crucial for evaluating ventricular performance.
- This simplified approach aids comprehension for non-experts and highlights the ventricle's systemic role.
Abstract:
There has been increasing interest in the study of ventricular function in the patient with congenital heart disease. Numerous indexes have been derived for the assessment of ventricular function, suggesting that none is ideal. While the derivation of some measures of ventricular function have relied on advanced mathematical principles, it is still possible for the non-mathematician to obtain important insights into ventricular function from an assessment of the events which underpin the cardiac cycle. In this review, I use the mechanics of the cardiac cycle to introduce basic concepts of ventricular function for the non-expert. In this way, I analyse ventricular systolic and diastolic performance and describe the contribution of regional variability of function to overall performance. This approach also highlights the role of the ventricle in overall cardiovascular and metabolic homeostasis.