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What should we call the 'crista'?
Insights
Confusing terminology for congenital cardiac anomalies, specifically the crista supraventricular and septal band, requires clarification. This study proposes standardized terms for these structures to improve diagnostic accuracy in congenital heart disease.
Area of Science:
- Cardiology
- Developmental Biology
- Anatomical Terminology
Background:
- Published literature reveals inconsistent descriptions of the crista supraventricular and septal band in congenital cardiac anomalies.
- This ambiguity complicates accurate diagnosis and communication among medical professionals.
Purpose of the Study:
- To propose a standardized terminology for specific right ventricular structures in congenital heart anomalies.
- To reduce confusion arising from the varied nomenclature of the crista supraventricular and septal band.
Main Methods:
- Review of existing literature on congenital cardiac anomalies.
- Analysis of anatomical descriptions of right ventricular structures.
- Proposal of new terminology based on anatomical location and function.
Main Results:
- Identified at least four different structures described as crista supraventricular and two as septal band.
- Proposed reserving 'crista' for the normal right ventricle structure.
- Suggested specific terms (infundibular septum, ventriculo-infundibular fold, trabecula septomarginalis) for structures in anomalous hearts.
Conclusions:
- Standardized terminology is crucial for clear communication in congenital heart disease.
- Adoption of proposed terms could enhance diagnostic precision.
- An international consensus, such as a 'Nomina Cardiologica', is needed for definitive agreement on terminology.
Abstract:
Review of published work concerning congenital cardiac anomalies reveals that at least four different structures have been described as the crista supraventricular, in addition to the structure which in the normally formed right ventricle separates pulmonary and tricuspid valves. Possibility of further confusion arises since at least two different structures have been described under the name 'septal band'. We suggest that this potentially confusing situation will be best resolved by reserving the term 'crista' for description of the muscle mass between inflow and outflow portions of the right ventricle when there are no additional outflow tract anomalies. We then suggest that at least three separate structures warrant description in hearts with outflow tract anomalies. The first separates the semilunar valves, the second separates a semilunar valve from an atrioventricular valve, and the third is an extensive septal trabeculation of the right ventricle. Our suggested terms for these structures are the infundibular septum, ventriculo-infundibular fold, and trabecula septomarginalis, respectively. However, we believe that such terms would be better decided and agreed upon within an internationally formulated 'Nomina Cardiologica', a terminology as yet lacking in congenital heart disease.