7. Needle-free jet Injector-assisted triamcinolone treatment of keloids and hypertrophic scars is effective and well tolerated in children. 191 7. Variable Value, n (%), N = 11 Gender Female 6 (55) Age 4-6 years 6-10 years 10-14 years 14-18 years 1 (9) 3 (27) 2 (18) 5 (45) Fitzpatrick skin type 1-2 3-4 5-6 3 (27) 6 (55) 2 (18) Number of lesions 1-10 11-30 >30 6 (55) 2 (18) 3 (27) Anatomical location Extremities and trunk Inguinal Mastoid/ear Scapulae/back Scapulae/ back and other location (extremities/trunk) 3 (27) 1 (9) 2 (18) 2 (18) 3 (27) Etiology Acne Complicated Varicella Zoster Mollusca contagiosa Trauma 4 (36) 1 (9) 1 (9) 5 (45) Previous treatmentsa Multiple conventional needle bleomycin treatments Multiple conventional needle TCA treatments PDL laser Silicon sheeting Surgical excision + i.l. TCA treatment Topical Corticosteroids 1 (9) 9 (82) 1 (9) 2 (18) 2 (18) 2 (18) Motivation for EPI + treatmenta Needle-phobia Suboptimal or no results after previous treatments Severe pain during needle injections 5 (45) 9 (82) 9 (82) Pressure EPI in bar, device range 2-6 Bar (% pressure) 2.8 – 3,2 Bar (20-30%) 2.8 – 4 Bar (20-50%) 3.2 – 4.6 Bar (30-65%) 5 (45) 4 (36) 2 (18)
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