We want to judge the improvement of the endothelial function remotely to the acute exacerbation (6 weeks). And then we would like to correlate this improvement with the variations of oxidative stress, muscle strength, respiratory function and systemic inflammation.
We also would like to find a relation between the new hospitalizations for respiratory exacerbation and the initial value of endothelial function.
Then we would like to evaluate the relationship between the cardiovascular risk and the COPD severity.
