Comparison of Multiple Diagnostic Tests to Measure Dynamic Hyperinflation in Patients with Severe Emphysema Treated with Endobronchial Coils

Abstract Purpose For this study, we aimed to compare dynamic hyperinflation measured by cardiopulmonary exercise testing (CPET), a six-minute walking test (6-MWT), and manually paced tachypnea (MPT) in patients with severe emphysema who were treated endobronchial coils. Additionally, investigated whether changed after treatment Methods Dynamic was CPET, 6-MWT, an MPT 29 before coil treatment. Results There no significant change Comparison of CPET showed strong association (rho 0.660, p < 0.001) moderate agreement (BA-plot, 202 ml difference favor MPT). only the 6-MWT 0.361, 0.024). Conclusion can be suitable alternative measure but may overestimate possibly due higher breathing frequency.