**3. The perception of early warning signs and prodromal symptoms in AECOPD patients**

The perception of early warning signs and prodromal symptoms in AECOPD patients is important to prevent and manage exacerbation among COPD patients. It was according to perception of exacerbation in each COPD patient who aware of exacerbation occurred that means it is different recognition in COPD patients

#### *Early Warning Signs and Prodromal Symptoms of AECOPD Patients DOI: http://dx.doi.org/10.5772/intechopen.107054*

individually. Exacerbation was the event that was showed in 'visible' and 'invisible' symptoms. Visible symptoms were presented in struggles to breathe until cannot breathe and invisible symptoms were presented in really bad, massive anxiety, panic attack, and all things worse liked being trapped in a life-threatening situation that is differently in each person.
