7. Needle-free jet Injector-assisted triamcinolone treatment of keloids and hypertrophic scars is effective and well tolerated in children. 186 Procedure-Related Pain Seven patients participated in the pilot treatment (Fig. 3). Median procedure-reported VAS pain scores were 3 (IQR: 3–4; n = 11) and 7 (IQR: 6–8; n = 7), with respectively the EPI and CN (p = 0.027). Visual analog scale scores were 4 (IQR: 3–4; n = 11) during the consecutive EPI treatments. Figure 3. Procedure-related visual analog scale (VAS) pain scores. Procedure-related VAS pain scores during the pilot treatment were significantly lower with electronic pneumatic injector (EPI)-assisted injections compared with needle injections. TCA triamcinolone acetonide. Adverse Events In three patients, mild adverse reactions (hyperpigmentation: n = 1, hypopigmentation: n = 1, and white macules: n = 1) were reported. No other general side effects of TCA such as subcutaneous atrophy, teleangiectasia, and local infection were observed. The 1- to 2mm white macules at the injection site may have resulted from intralesional TCA precipitations, and were resolved spontaneously at follow-up. No severe adverse reactions were reported.
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