6. Needle-free electronically-controlled jet injector treatment with bleomycin and lidocaine is effective and welltolerated in patients with recalcitrant keloids. 152 Figure 2 Keloid of a 28-year-old patient, directly after EPI-assisted treatment with bleomycin and lidocaine, with blanching observed as clinical endpoint. The paler regions within the keloid indicate successful administration of medication. EPI, electronically controlled pneumatic jet injector. Statistical analysis All data were analyzed using SPSS 28.0 (IB). The Wilcoxon signed-rank test was employed to evaluate the change in median POSAS scores at baseline and follow-up and procedurerelated pain scores. Descriptive statistics were presented as median and IQR. A p Value of ≤0.05 was considered statistically significant.
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