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Ventilation with a low tidal volume vs. an intermediate tidal volume during pleural decortication
Annali Italiani Di Chirurgia
|February 15, 2022
Summary
Low tidal volume and PEEP with PCV-VG ventilation improved lung function during one-lung ventilation in tuberculous destroyed lung patients. This approach reduced airway pressure and intrapulmonary shunt, potentially alleviating pulmonary injury.
Area of Science:
- Anesthesiology and Critical Care Medicine
- Respiratory Physiology
- Thoracic Surgery
Background:
- Tuberculous destroyed lung (TDL) presents unique challenges during one-lung ventilation (OLV).
- Optimizing ventilation strategies is crucial to minimize lung injury and improve outcomes in TDL patients undergoing surgery.
Purpose of the Study:
- To evaluate the efficacy of combining low tidal volume and positive end-expiratory pressure (PEEP) with pressure-controlled ventilation-volume guaranteed (PCV-VG) during OLV in TDL patients.
- To assess the impact of this ventilation strategy on pulmonary injury markers and gas exchange.
Main Methods:
- Patients with TDL were divided into two groups: conventional volume-controlled ventilation (VCV) and PCV-VG with low tidal volume and PEEP.
- Ventilation parameters, including tidal volume, respiratory rate, and PEEP, were meticulously controlled and monitored.
- Key physiological parameters such as airway pressures, oxygenation index (OI), intrapulmonary shunt (Qs/Qt), and arterial carbon dioxide partial pressure (PaCO2) were measured.
Main Results:
- The PCV-VG group demonstrated significantly lower peak airway pressure (Ppeak), plateau pressure (Pplat), and intrapulmonary shunt (Qs/Qt) compared to the VCV group.
- Improved oxygenation index (OI) and reduced intrapulmonary shunt (Qs/Qt) were observed in the PCV-VG group.
- Concentrations of inflammatory markers (IL-6, TNF-α) and BNP were decreased in the PCV-VG group post-ventilation.
Conclusions:
- The combination of low tidal volume, PEEP, and PCV-VG ventilation is a promising strategy for mitigating pulmonary injury during OLV in TDL patients.
- This ventilation approach effectively reduces airway pressures and intrapulmonary shunt, contributing to better patient outcomes.
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