本研究旨在探討病童接受靜脈注射前局部使用2% Lidocaine Jelly能否減緩靜脈注射時的疼痛。採隨機對照研究設計，研究對象為北部某醫學中心6-18歲住院病童，實驗組及對照組各收集75人；實驗組在注射前於注射部位局部使用2% Lidocaine Jelly，對照組則使用K-Y Jelly。採用自擬式問卷、疼痛視覺類比量表收集資料，並進行心跳及血氧飽和濃度生理指標監測。研究結果顯示，病童接受靜脈注射前30分鐘局部使用2% Lidocaine Jelly能降低注射時之疼痛視覺類比量表分數(p＜ .001)，但其心跳及血氧飽和濃度疼痛生理指標則無顯著差異(p＞ .05)，亦不影響置針成功率(p= .604)。本研究結果說明病童於靜脈注射前局部使用2% Lidocaine Jelly能有效緩解兒童的主觀疼痛感受，進而降低住院壓力，向無痛醫療環境邁進。

The aim of this study was to discuss the efficacy of topical lidocaine jelly in reducing pain during pediatric intravenous catheter placement. This randomized controlled trial study included 150 inpatients who were 6-18 years old. Using convenience sampling, these participants were assigned to treatment (n = 75) and control (n = 75) groups. Children in the treatment group were administered 2% lidocaine jelly topically at the catheter placement site, while those in the control group were administered K-Y jelly instead before the placement of the intravenous catheter. The data were collected by monitoring physiological indicators of heart rate and oxygen saturation, and also through a self-structured questionnaire and the Visual Analogue Scale (VAS). The results demonstrated that children that received 2% lidocaine jelly topically had a lower VAS score during the intravenous injection (p ＜ .001). However, there was no significant difference in the physiological indicators of heart rate and oxygen saturation (p ＞ .05), and no influence on the success ratio of intravenous placement (p = .604). In conclusion, children who received partial administration of lidocaine jelly before intravenous injection perceived effective relief from the subjective feeling of pain. Such pain relief can reduce the stress of hospitalization.