View clinical trials related to Funnel Chest.
Filter by:Pectus excavatum is the most common anterior chest wall deformity that affects up to 1:400 of newborns. If an operative correction is indicated, patients are often operated via the Ravitsch or Nuss bar procedure. The latter (i.e. the Nuss bar procedure) is the most commonly performed procedure. During this procedure one or more metal bars are inserted behind the sternum to push the sternum back into its normal position. These bars remain in situ for two-to-three years before being removed. Despite the fact that the Nuss bar procedure is regarded as an effective procedure, retraction may occur after removal. A recent study has investigated this phenomenon, utilizing three-dimensional (3D) optical surface scans acquired before and after Nuss bar removal. The authors found statistically significant changes to occur in chest wall dimensions directly after, as well as between 2 and 8 weeks after Nuss bar explantation, in comparison to the situation just prior to bar removal. They, moreover, found the time the bar was in situ to be predictive for retraction. However, the authors also stressed that further studies are needed to reinforce their preliminary findings and perform long-term assessments. Subsequently, a similar study with long-term assessments will be conducted.
Pectus excavatum is the most common anterior chest wall deformity, affecting up to 1:400 of newborns. The current gold standard to quantify the extent of deformity is by calculating the Haller Index based on a Computed Tomography (CT)-scan. However, as such scans inescapably imply exposure to ionizing radiation, novel imaging techniques have been investigated. Three-dimensional optical surface scanning is a promising new technique to acquire the trunks' three-dimensional (3D) surface topography. Based on this 3D scan, one is able to calculate the external Haller Index that is known to highly correlate with the conventional gold standard Haller Index that is based on internal measures. Both the conventional and external Haller Index are known to be affected by the respiratory phase in which the scan is acquired, however, what is the effect of patient position on the external Haller Index, and if affected, how should one correct for this phenomenon? To investigate this, a retrospective single-centre pilot study will be conducted.