Relationship Between Quantitative Tracheal Geometry and Clinical Course in Various Types of Vascular Ring

Area of Science:

• Cardiology
• Pediatric Surgery
• Radiology

Background:

• Vascular rings are congenital anomalies where the aortic arch incompletely or completely encircles the trachea and esophagus.
• Clinical presentation varies significantly, impacting diagnosis and management.
• Quantitative assessment of tracheal geometry may offer insights into symptom development.

Purpose of the Study:

• To correlate quantitative tracheal geometry with clinical outcomes in various vascular ring types.
• To identify specific anatomical factors associated with symptom presentation in patients with vascular rings.

Main Methods:

• Retrospective analysis of 50 patients diagnosed with vascular rings (types 1-5) between 2010 and 2022.
• Classification of vascular rings based on anatomical subtypes.
• Quantitative analysis of tracheal dimensions using computed tomography (CT).
• Comparison of clinical characteristics and survival times across different vascular ring types.

Main Results:

• Type 1 vascular rings (complete double aortic arch) exhibited smaller tracheal diameters and the shortest median symptom-free survival (16 days).
• Type 3 (circumflex aorta) also showed significantly shorter symptom-free survival (138 days) compared to other types.
• Tracheal narrowing percentage (anteroposterior view) and specific vascular ring types (1 and 3) were significant predictors of symptom presentation.

Conclusions:

• Quantitative tracheal geometry, particularly luminal diameter and degree of narrowing, is a critical factor in vascular ring symptom presentation.
• Anatomical features of type 1 and type 3 vascular rings, such as complete aortic encirclement and anterior vasculature, increase the risk of symptomatic disease.