Negative pressure ventilation (NPV) is a non-invasive ventilation mode which provide better lung expansion. The major complication of NPV is decrease blood pressure and affects the hemodynamics. The effects of NPV on chronic obstructive pulmonary disease (COPD) patients with pulmonary rehabilitation program remains unknown.
Both of NPV or positive pressure ventilation (PPV) has impact of hemodynamics. NPV with cuirass ventilator increases venous return and leads to ventricular filling and increases cardiac output (CO); In contrast to NPV, the effect of PPV in most situations is a decreased venous return and leads to decreased CO. NPV improving ventilation and work of breathing in patients with chronic obstructive pulmonary disease (COPD).
Study Type
OBSERVATIONAL
Enrollment
30
Patients who received a negative pressure during inspiratory phase.
Fu Jen Catholic University Hospital, Fu Jen Catholic University
New Taipei City, Taiwan
CO (cardiac output)
Change of Cardiac output before and after NPV treatment
Time frame: 20 minutes
SV (stroke volume)
Change of stroke volume before and after NPV treatment
Time frame: 20 minutes
SpO2
Change of oxygen saturation before and after NPV treatment
Time frame: 20 minutes
RR (respiratory rate)
Change of respiratory rate before and after NPV treatment
Time frame: 20 minutes
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