[Effects of mechanical ventilation and positive end-expiratory on central venous pressure].
Liming Yang, Jing Tan, Wanli Yang
Abstract
Liming Yang, Jing Tan, Wanli Yang
Abstract
OBJECTIVE: To investigate the effects of mechanical ventilation and positive end expiratory pressure (PEEP) on central venous pressure (CVP). METHODS: Forty cases of respiratory failure with mechanical ventilation were enrolled. Catheter was inserted via subclavian vein in each. And then CVP was measured without mechanical ventilation and under different PEEP conditions of 0, 6 and 12 cm H2O. RESULTS: Mechanical ventilation could affect the levels of CVP, P(peak) ≈ PS+PEEP, followed PEEP, t = 3.364, P = 0.006. There was significant difference was found among the three groups, F = 15.293, P = 0.000. And CVP increased with a rising level of PEEP. CONCLUSION: Mechanical ventilation and PEEP affect the accuracy of CVP.
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OBJECTIVE: To investigate the effects of mechanical ventilation and positive end expiratory pressure (PEEP) on central venous pressure (CVP). METHODS: Forty cases of respiratory failure with mechanical ventilation were enrolled. Catheter was inserted via subclavian vein in each. And then CVP was measured without mechanical ventilation and under different PEEP conditions of 0, 6 and 12 cm H2O. RESULTS: Mechanical ventilation could affect the levels of CVP, P(peak) ≈ PS+PEEP, followed PEEP, t = 3.364, P = 0.006. There was significant difference was found among the three groups, F = 15.293, P = 0.000. And CVP increased with a rising level of PEEP. CONCLUSION: Mechanical ventilation and PEEP affect the accuracy of CVP.
Key concepts: Mechanical ventilation, Positive end-expiratory pressure, Medicine, Central venous pressure, Anesthesia, Ventilation (architecture), Internal medicine, Blood pressure