A Comparative Study for the Lung Mechanics during One-Lung Ventilation in Thoracic Surgeries Using Two Different Modes of Mechanical Ventilation
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- Category: Vol. 85, June 2017
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A Comparative Study for the Lung Mechanics during One-Lung Ventilation in Thoracic Surgeries Using Two Different Modes of Mechanical Ventilation, RAMADAN M. ABDEL MOTAGALLY, HOSSAM SALAH EL-DIN, HISHAM ABDEL WAHAB and YASSER MOHAMMED
Abstract
Background: One-Lung Ventilation (OLV) is a common practice during thoracic surgery. Volume-Controlled Ventilation (VCV) has been considered the conventional approach to mechanical ventilation during OLV; however, recently Pres-sure-Controlled Ventilation (PCV) has gained interest due to its potential advantages.
Aim: The aim of this study was to compare between PCV and VCV during OLV as regards lung mechanics.
Material and Methods: We studied 50 patients scheduled for thoracic surgery with OLV in the lateral decubitus position. After initial two-lung ventilation with VCV, patients were randomly assigned to one of two groups; in the first group OLV was achieved with PCV (inspiratory pressure to provide a tidal volume of 6mL/kg), and in the second group OLV was achieved with VCV (tidal volume 6mL/kg). Lung mechanics (Peak inspiratory pressure (Ppeak), mean airway pressure (Pmean), and dynamic lung compliance (Cdyn) were measured at different times throughout the procedure.
Results: Peak airway pressure ,and mean airway pressure, were significantly increased during OLV in both groups.
Dynamic lung compliance was significantly decreased during OLV in both groups.
Conclusion: At constant low tidal volume there is no significant difference in lung mechanics between PCV and VCV during OLV.