Valvular & structural heart disease
Aging of the tricuspid valve annulus detected by photon-counting detector computed tomography: Importance of aortic root compression on occurrence of arrhythmias
Authors' conclusion
Aortic root compression deforms the TVA and alters the anatomic relationship between the atrioventricular conduction system and the cavotricuspid isthmus. Therefore, aortic root compression may contribute to the occurrence of atrial tachyarrhythmias and conduction disturbances in older patients.
Study context
- Population
- Consecutive patients who underwent photon-counting detector computed tomography, excluding those with diseases that directly influenced the right side of the heartconsecutive patients analyzed
- Participants
- 147 patients
- Comparison
- Patients with severe tricuspid valve annulus (TVA) compression vs without severe compression; older vs younger patients
- Outcome
- TVA deformation by aortic root compression
Methodological detailssingle institute, 3-dimensional endoscopic view of the heart
- Single institute
- 3-dimensional endoscopic view of the heart
Main finding
As reported in the abstract
- Aortic root compression caused significant TVA deformation
Further findings
Atrial tachyarrhythmias · more frequent with severe compression
P < 0.01
Atrioventricular conduction disturbances · more frequent with severe compression
P < 0.01
Prevalence of severe TVA compression in elderly patients (age ≥75 years)
- Severe compression in age ≥75 years
- 44%
- P < .01
Distance between membranous septum and ostium of coronary sinus; cavotricuspid isthmus length
- Membranous septum–coronary sinus ostium distance shortened and cavotricuspid isthmus elongated in older patients
Contributors to TVA compression (regression analysis)
- Aging a significant contributor to TVA compression
TVA axes
- Short minor and long major axes of the TVA more frequent with severe compression
Original publication
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