Observation Grade
No cough 0
Single cough O2 Sat ≥ 95% 1
More than one episode of unsustained cough (≤ 5 sec) 2
Sustained bouts of coughing (≥5 secs) 3
Grade 1: Mild cough.Grade 2 and 3: Significant cough.
Table 2: Coughing Point Scale.