> support spontaneous breathing preferred to fully ventilated IPPV IPPV: avoid dynamic hyperinflation and barotrauma.> reduced need for mechanical ventilation those with hypercapnic respiratory failure.oropharyngeal/nasopharyngeal suctioning.accepted role when exacerbation secondary to infection.avoid when exacerbation clearly due to pneumonia without bronchospasm.improves airflow obstruction in those requiring mechanical ventilation.nebulised beta-agonists + aminophylline.there is often a reversible component and also improves mucocillary clearance.(4) anxiolysis and reduction in tachypnoea (3) dissociation of CO2 from Hb (Haldane effect) ![]()
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