Criner - Figure 6
Time to Hospitalization
FIG: 6: Looking at the same patients as in the previous Figure, their time-to-hospitalization was much shorter if they were hypercapnic. As shown in this Figure, patients with PaCO2 >44 mmHg (lower line) had about a 50% probability of being hospitalized over 3 years, compared with patients with PaCO2 ≤44 mmHg (upper line), where although their risk of hospitalizations was high at 20%, it was only about half the magnitude of the risk in patients who were more hypercapnic.[5]
Criner G. Chest 2017:00.
References
[5]
Kessler R, Faller M, Fourgaut G, et al. Predictive factors of hospitalization for acute exacerbation in a series of 64 patients with chronic obstructive pulmonary disease. Am J Respir Crit Care Med. 1999;159:158−64.