Shimizu Mikiko, Iriyama Shigemi
Department of Nursing, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Faculty of Nursing, School of Health Sciences, Fujita Health University, Toyoake, Japan.
Nagoya J Med Sci. 2025 May;87(2):339-350. doi: 10.18999/nagjms.87.2.339.
This study aimed to clarify the temporal changes in transcutaneous hemoglobin levels up to 1 month postpartum and the influencing factors in postpartum women using a noninvasive transcutaneous hemoglobin measuring device. The study participants were pregnant women recruited at an outpatient clinic. We collected information on their dietary history using a concise self-administered questionnaire and an agreement document when they were hospitalized for delivery. Transcutaneous hemoglobin levels of the mothers were measured using Pronto (Masimo) at 1 day, 4 days, 2 weeks, and 1 month postpartum. We included 135 mothers (mean age, 31.7 years) who delivered at full term. The mean transcutaneous hemoglobin levels decreased slightly from day 1 (11.9 ± 1.6 g/dL) to day 4 postpartum (11.8 ± 1.7 g/dL), followed by a significant increase from day 4 to 2 weeks postpartum (13.8 ± 1.0 g/dL; p < 0.01), and no change from 2 weeks to 1 month postpartum (13.8 ± 0.9 g/dL). Iron intake in the third trimester of pregnancy affected transcutaneous hemoglobin levels from day 4 postpartum to recovery by 2 weeks postpartum. The rapid increase in hemoglobin levels from day 4 to 2 weeks postpartum was a novel finding. Evaluation of hemoglobin levels in women at 2 weeks postpartum is important for postpartum recovery. Furthermore, health guidance regarding iron intake in the third trimester of pregnancy has been suggested to be effective in restoring postpartum hemoglobin levels.
本研究旨在使用无创经皮血红蛋白测量设备，阐明产后1个月内产后女性经皮血红蛋白水平的时间变化及其影响因素。研究参与者为在门诊招募的孕妇。当她们住院分娩时，我们使用一份简明的自填式问卷和一份协议文件收集了她们的饮食史信息。在产后1天、4天、2周和1个月时，使用Pronto（Masimo）测量母亲的经皮血红蛋白水平。我们纳入了135名足月分娩的母亲（平均年龄31.7岁）。经皮血红蛋白平均水平从产后第1天（11.9±1.6 g/dL）至第4天略有下降（11.8±1.7 g/dL），随后从第4天至产后2周显著升高（13.8±1.0 g/dL；p<0.01），从2周至1个月产后无变化（13.8±0.9 g/dL）。妊娠晚期的铁摄入量影响产后第4天至产后2周恢复时的经皮血红蛋白水平。产后第4天至2周血红蛋白水平的快速升高是一项新发现。评估产后2周女性的血红蛋白水平对产后恢复很重要。此外，已表明关于妊娠晚期铁摄入量的健康指导对恢复产后血红蛋白水平有效。
