[医][=intrinsic positive end expiratory pressure]内源性呼气未正压
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Conclusion MRV , PSV can low PIP , Pp , Pm in patients with type ⅱ respiratory failure . MRV can low PEEPi , thus it is one of lung protective ventilation strategies and play a beneficial role in preventing lung barotraumas .
BACKGROUND : Expiratory flow limitation ( EFL ) is the main mechanism leading to dynamic pulmonary hyperinflation ( DPH ) and intrinsic positive end-expiratory pressure ( PEEPi ) . DPH and PEEPi lead to increased inspiratory threshold load and impaired inspiratory muscle function ( especially the diaphragm ), resulting in increased inspiratory muscle efforts and impaired central drive mechanical and ventilation coupling , which is an important mechanism of dyspnea .
Conclusions 1 . It was common that PEEPi existed in patients with Cor pulmonale during mechanic ventilation .
结论(1)肺心病急性发作期机械通气患者普遍存在PEEPi;
Results : 7 out of 15 moderate COPD patients and 18 out of 21 severe COPD patients had PEEPi .
结果:15例中度COPD病人中的7例和21例重度COPD病人中的18例存在PEEPi。
Although PEEPi were higher in the lung protective ventilation group , the difference was not significant ( P > 0.05 ) .
肺保护性通气组的PEEPi略高于传统通气组,差异无统计学意义(P>0.05);
Results ( 1 ) The intrinsic positive end-expiratory pressure ( PEEPi ) in COPD is associated with the angle of peak expiratory flow and the end flow of expiratory .