3.6. Complications rates
The complications rates were 2.32% (2 of 86) in the KTP group and
17.71% (88 of 497) in the CO2 group (Table 3). The
complications rates were significantly different between the two groups
(p<0.0001). In the KTP group, only two complications were
reported that webbing was formed in front of the vocal fissure, causing
hoarseness but did not affect breathing44. As for
CO2 laser, a great number of complications occurred,
including mucosal tears, tooth injuries, laryngeal edema, scarring,
stenosis, and web formation (most were anterior glottic web), and
delayed soft tissue complications (i.e. functionally debilitating scar
formation with consecutive voice disorders or airway
stenosis)1,12,38,40–42. These complications relied on
the invasiveness of papilloma, the instrumentation used during surgery,
and the experience of the surgeon12.