Ventilation/perfusion scintigraphy in children with post-infectious bronchiolitis obliterans: a pilot study

Area of Science:

• Pediatric Pulmonology
• Diagnostic Imaging
• Respiratory Medicine

Background:

• Childhood post-infectious bronchiolitis obliterans (BO) is a rare, severe airway disease.
• The diagnostic and prognostic value of ventilation and perfusion (V/Q) scans in pediatric BO remains unclear.
• Existing research on V/Q scans in post-infectious BO is limited and largely retrospective.

Purpose of the Study:

• To prospectively evaluate the correlation of V/Q scan findings with disease severity in children with post-infectious BO.
• To assess the relationship between V/Q scan indices and pulmonary function test results.
• To determine if V/Q scan can predict the prognosis of post-infectious BO in children.

Main Methods:

• Prospective study of 25 children diagnosed with post-infectious BO.
• All participants underwent V/Q scans and pulmonary function tests.
• Ventilation and perfusion indices from V/Q scans were correlated with disease severity, lung function, and follow-up outcomes using Spearman's rank correlation test.

Main Results:

• Both ventilation and perfusion indices significantly correlated with disease severity (r=0.72, p<0.01 and r=0.73, p<0.01).
• Ventilation index showed a significant relationship with pulmonary function test results (p<0.05).
• Both perfusion (r=0.77, p<0.01) and ventilation (r=0.63, p=0.01) indices were significantly correlated with patient prognosis.

Conclusions:

• V/Q scan findings, specifically ventilation and perfusion abnormalities, can effectively assess disease severity in pediatric post-infectious BO.
• V/Q scan parameters show potential as predictive markers for patient outcomes in this condition.
• This study provides preliminary evidence supporting the clinical utility of V/Q scanning in managing childhood post-infectious BO.