✨ 精选课程 · 第6课，共8课 · 60 sec
晚期减速：六十秒内的四个动作
Late Decels: Four Moves in Sixty Seconds
📉 胎心率晚下降，晚恢复。流向胎盘的血流跟不上宫缩。你有四个动作，约有一分钟时间来完成它们。
📉 The fetal heart rate dips late and recovers late. Blood flow to the placenta is not keeping up with the contractions. You have four moves and about one minute to make them.
💡 核心要点
晚期意味着胎盘。侧卧、停用oxytocin、补液、通知；仅当她缺氧时才给氧。
Late means placenta. Side, stop oxytocin, fluids, notify; oxygen only if she is hypoxic.
🧠 为什么重要
VEAL CHOP：Variable是Cord（可变减速是脐带）、Early是Head（早期减速是胎头）、Accelerations是Okay（加速是好的）、Late是Placenta（晚期减速是胎盘）。对于晚期减速：让患者侧卧，停用oxytocin，给予IV液体推注，并通知医疗提供者。仅当她缺氧或按方案规定时才给予氧气；ACOG不再推荐常规给母体吸氧。对于可变减速，先改变体位，并检查是否有脐带脱垂。对于脐带脱垂，用戴手套的手将先露部从脐带上托起，并呼叫紧急分娩。
VEAL CHOP: Variable is Cord, Early is Head, Accelerations are Okay, Late is Placenta. For late decelerations: turn the client to her SIDE, STOP the oxytocin, give an IV FLUID bolus, and NOTIFY the provider. Give OXYGEN only if she is hypoxic or per protocol; ACOG no longer recommends routine maternal oxygen. For variable decelerations, reposition first and check for a prolapsed cord. For a prolapsed cord, lift the presenting part off the cord with a gloved hand and call for an emergency delivery.
🏥 真实场景
🔄 监护仪上的图形很微妙，房间里很平静。知道VEAL CHOP的护士看到减速的最低点出现在每次宫缩高峰之后，于是比其他任何人先开始那四个动作。两分钟后，记录纸看起来又令人放心了。没有人会知道当时有多危险，而这正是重点所在。
🔄 The pattern on the monitor is subtle and the room is calm. The nurse who knows VEAL CHOP sees the dips bottoming out after each contraction's peak and starts the four moves before anyone else notices. Two minutes later the strip looks reassuring again. Nobody will ever know how close it was, which is the point.
📌 要点总结
- 可变减速是脐带，早期减速是胎头，加速是好的，晚期减速是胎盘Variable cord, early head, accelerations okay, late placenta
- 晚期减速：侧卧、停用oxytocin、补液、通知；仅当缺氧时才给氧Lates: side, oxytocin off, fluids, notify; oxygen only if hypoxic
- 脐带脱垂：托起先露部并呼叫分娩Prolapsed cord: lift the presenting part and call for delivery
✅ 自我测试
哪种胎心率图形提示子宫胎盘功能不全？Which fetal heart rate pattern indicates uteroplacental insufficiency?
- 加速Accelerations
- 早期减速Early decelerations
- 可变减速Variable decelerations
- 晚期减速Late decelerations
答案: D · 晚期减速
晚期减速反映胎盘在宫缩期间无法输送足够的氧气。可变减速是由脐带受压引起的突然下降，而不是由胎盘氧输送不良引起的。
Late decelerations reflect a placenta that cannot deliver enough oxygen during contractions. Variable decelerations are abrupt drops caused by umbilical cord compression, not by poor placental oxygen delivery.
一位正在接受oxytocin的患者反复出现晚期减速，正确的措施是什么？A client receiving oxytocin has recurrent late decelerations. Which action is correct?
- 增加oxytocin以加快分娩Increase the oxytocin to speed delivery
- 停用oxytocin并让她改变体位Stop the oxytocin and reposition her
- 只准备做阴道检查Prepare for a vaginal exam only
- 继续监测30分钟Continue to monitor for 30 minutes
答案: B · 停用oxytocin并让她改变体位
子宫内复苏立即开始：停用oxytocin，重新调整为侧卧位，打开输液，通知医疗提供者，并在她缺氧或按方案规定时给予氧气。继续监测30分钟只是在观察问题，而每次宫缩仍在限制胎儿的氧供。
Intrauterine resuscitation starts immediately: stop the oxytocin, reposition to side-lying, open the fluids, notify the provider, and give oxygen if she is hypoxic or per protocol. Continuing to monitor for 30 minutes only watches the problem while each contraction keeps limiting the fetus's oxygen supply.
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