*Results from Telehealth DOI: http://dx.doi.org/10.5772/intechopen.101183*

#### **Figure 11.**

*Forest plot of the effect of telehealth on duration of physical activity [46].*


#### **Figure 12.**

*Forest plot of the effect of telehealth on 6 minute walk [46].*


#### **Figure 13.**

*Forest plot of the effect of telehealth on dyspnoea [46].*

telehealth have concentrated on monitoring vital signs to predict exacerbation, primarily measuring daily SpO2, and concentrate efforts on those in greatest need.

A meta-analysis of studies using vital signs to manage patients with severe COPD [47] shows that there is little change to FEV1; a primary measure of the severity of COPD. As telehealth is not a treatment, and COPD is progressive, then this might be expected. However, every exacerbation can reduce lung function, thus the earlier treatment for the exacerbation is started - the less might be the impact on lung function.
