Aortic Root Dilatation Z Score _verified_ [2026]

Progression of the Z-score is a trigger for prophylactic aortic root replacement (e.g., David procedure or Bentall surgery), particularly if the Z-score exceeds 4.0 or is rapidly rising (> 0.5 Z-score units per year).

A 3.8 cm aorta might be perfectly normal for a 6'5" athlete, but it would be dangerously dilated for a 5'2" woman or a growing child. The Z-score "indexes" the measurement to the patient's , providing a personalized assessment of heart health. Who Needs Z-Score Monitoring? aortic root dilatation z score