RESUMO
PURPOSE: Conservative treatment of pectus excavatum with a vacuum bell device may be an attractive alternative to surgical repair. We describe an early North American experience with this device. METHODS: Prospectively maintained chest wall clinic registries from two institutions were reviewed to identify pectus excavatum patients ≤21â¯years treated with the vacuum bell from 2013 to 2017. Multivariate linear regression was used to compare mean improvements in deformity-depth and Haller Index between groups of patients based on age and usage metrics (hours/day and days/week). RESULTS: Thirty-one patients with a median age of 14â¯years received treatment with the device. Mean follow-up duration was 18â¯months. Median depth and Haller Index at treatment onset were 2.3â¯cm and 3.9, respectively. Improvements in deformity-depth were superior with device usage >2â¯h/day (pâ¯<â¯0.01) and daily use (pâ¯<â¯0.01). After adjusting for compliance, younger age of treatment onset was associated with greater improvement in Haller Index but not deformity depth. CONCLUSION: Our prospective early North American experience found the vacuum bell to be a potential alternative to surgical treatment for pectus excavatum. Longer usage periods in a daily frequency are associated with best results. TYPE OF STUDY: Treatment study; case series with no comparison group. LEVEL OF EVIDENCE: Level IV.