217 out of 333
Stage III, plane 3 of anaesthesia is best indicated clinically by:
|C||Absent thoracic respiration|
|D||Absent corneal reflex|
Absent thoracic respiration
Absent laryngeal reflex is the most important sign of stage III plane 3 (and that is why it is stage of surgical anaesthesia). Respiratory muscle paresis to paralysis is also seen in this stage.