Analysis will consist of between group comparisons of the efficacies and bursting pressure of both the energy sealed vessels (experimental group) and the endostapler-sealed vessels (control group). Vessels will be stratified by luminal diameter by millimeter. Primary outcome for analysis will be the intergroup comparisons of mean PA burst pressure by size of vessel. Intergroup differences will be compared with the student's t-test with bursting pressures entered as a continuous variable. Statistical testing for normality of data will be performed and when data is non-normal, non-parametric methods (ex: Wilcoxon Rank Sum Test…) will be used. Multivariable linear regression models will be employed in order to compare burst pressures between groups controlling for potential confounders (disease state, size of vessel sealed, age of patient, sex, pulmonary lobe, laterality, immunosupression, diabetes, vascular disease…).