minute ventilation
1.Although the slopes of HVR are not different between two group,Minute Ventilation(MV) in same SaO?2 are lower in HAP.
2.Breathing patterns during and after exercise were measuned by plotting the tidal volume(VT) on the abscissa and minute ventilation(?AV·U?E) on the ordinate.
3.For the noninvasive mechanical ventilation, before the treatments we have the following data: breathing rate(RR)(30.90±5.15 次/min), expired tidal volume(EVT)(0.27±0.08L/min),minute ventilation(MV)(4.87±1.99L/min), mean airway pressure(MAP)( 12.70±3.61Kpa).
4.Tidal volume (VT) and minute ventilation(MV) in MRV mode was as the same as that in CMV and SIMV.PIP,PP,Pm,PEEPi and arterial blood gas were recorded during above three modes of ventilation. Results:With MRV PIP,Pp and Pm were significantly lower than that with CMV(P<0.05);
5.Noninvasive BP,HR and SpO_2 were monitored. Tidal volume(V_T), respiratory rate(RR),minute ventilation(MV),peak inspiratory flow rate(PIFR)and inspiratory time ratio (T_I/T_T)were monitored before and every 3 minutes after TCI of remifentanil was started using Biocore respiratory monitor(Biocore Ltd,USA).
6.Maximal voluntary ventilation(MVV),minute volume of d ead space ventilation(VE),forced expiratory volume in one second(FEV1),residua l volume(RV),total lung capacity(TLC),arterial partial pressure of carbon diox ide(PaCO?2),arterial partial pressure of oxygen(PaO?2) were recorded repectiv ely 3 day before operation and 1 day and 3 day after operation.
7.Methods: Respiratory rate(RR),tidal volume(VT),minute volume(VE),airways resistance(Raw),respiratory system compliance(Crs),P0.1,intrinsic positive end-expiratory pressure(PEEPi)were measured in 61 COPD patients with mechanical ventilation at the bedside.
