背景 : 主觀性乳汁分泌不足常見於產後婦女，也是造成早期斷奶的主要原因。研究指出，剖腹產婦女感受到乳汁分泌不足的發生率高於陰道產之婦女。 目的 : 探討計畫剖腹生產產婦乳汁分泌感知之相關因素。 方法 : 採描述相關研究，以方便取樣方式於台灣北部某區域教學醫院，於產後第三天，針對 141名計畫剖腹生產產婦進行收案。研究工具包括人口學屬性、生產措施調查表、視覺疼痛評估量表以及H&H乳汁分泌量表，以檢測影響計畫剖腹產產婦乳汁分泌感知的相關因素。 結果 : 以複迴歸分析發現ç胎次、麻醉方式、首次哺乳的時間、配方奶的使用是計畫剖腹產婦女乳汁分泌感知的重要預測因子，共可解釋23.1%的變異量。採用硬膜外止痛、第一次哺乳時間延遲、哺乳頻率較少、添加配方奶之剖腹產婦女有較低的乳汁分泌感知分數。 結論／實務應用 : 醫護人員應該鼓勵剖腹產產婦儘早依嬰兒需求開始哺乳，減少配方奶的使用，及增加嬰兒吸吮乳房的次數；縮短手術後硬膜外止痛使用日數，改以非麻醉性口服止痛藥以促進產婦成功哺乳。

Background: Perceived insufficient milk supply is common among postpartum women and is a major reason for early weaning. Studies indicate a significantly higher incidence of insufficient milk supply in women who undergo cesarean section as compared with women who undergo vaginal delivery. Purpose: This study was designed to determine perceived milk supply in postpartum women who underwent a planned cesarean section, as well as related factors. Methods: Authors employed a descriptive correlational study design. Factors associated with milk supply perception in postpartum women (at 3 days postpartum) were collected from 141 postpartum women who planned to undergo cesarean section at a regional teaching hospital in northern Taiwan. A demographic data sheet, the Birth Practice Inventory, a visual pain analog scale, and the Hill and Humenick Lactation Scale were used to identify factors affecting the perceived milk supply of participants. Results: The study used multiple linear regression to identify significant predictors of milk supply perception. Four factors, including parity, type of anesthesia, time to initial breastfeeding, and use of formula, explained 23.1% of total variance among participants. Women who experienced epidural patient-controlled analgesia, those with delayed initial breastfeeding or lower breastfeeding frequency, and those who used formula supplementation earned relatively lower perceived milk supply scores. Conclusions/Implications for Practice: Study results indicate that medical staff should encourage postpartum women to commence breastfeeding, based on infant need, as early as possible and reduce formula use to increase breastfeeding frequency. Shifting to nonnarcotic analgesic medications from epidural patient-controlled analgesia as early as possible is also recommended to increase breastfeeding success.