[Effect of invasive and non-invasive positive pressure ventilation on plasma brain natriuretic peptide in patients with chronic obstructive pulmonary disease and severe respiratory failure].

OBJECTIVE

To investigate the change in plasma brain natriuretic peptide (BNP) in patients with chronic obstructive pulmonary disease (COPD) and severe respiratory failure receiving invasive or non-invasive positive pressure ventilation.

METHODS

Fifty-six patients with COPD and severe respiratory failure were randomized into non-invasive ventilation group (n=28) to receive facial mask ventilation and invasive ventilation group (n=28) to have mechanical ventilation by tracheal intubation or tracheal incision. The changes of blood gas and BNP before and 24 h after the ventilation were observed.

RESULTS

The indexes of blood gas analysis such as pH, PO2 and PaCO2 in the invasive ventilation group were better than those in the non-invasive ventilation group (P<0.05). The plasma levels of BNP of the invasive ventilation group were much lower 24 h after the treatment than that of the non-invasive ventilation group (P<0.05).

CONCLUSION

Invasive ventilation produces better effect than non-invasive ventilation in the treatment of COPD with severe respiratory failure. Plasma concentrations of BNP has significant clinical value to evaluate the effect of mechanical ventilation.