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🩺 基础护理，快速掌握 · 第1课，共5课 · 6 min

应该刻在骨子里的数字

The Numbers That Should Live in Your Spine

📈 考试会给你一组生命体征，却从不告诉你哪一个不正常。如果你还要思考每分钟24次呼吸算不算高，你就已经浪费了两秒钟，也丢掉了一些信心。

📈 The exam will hand you a set of vital signs and never say which one is abnormal. If you have to think about whether 24 breaths a minute is high, you have already lost two seconds and some confidence.

💡 核心要点

要牢记成人正常值，记住儿童的数值更高，并关注脉压和MAP，考试会用它们来提示休克和颅内压问题。

Know the adult normals cold, remember children run faster, and watch pulse pressure and MAP, which the exam uses to hint at shock and intracranial pressure.

🧠 为什么重要

成人正常值：HEART RATE为每分钟60到100次；RESPIRATIONS为每分钟12到20次；BLOOD PRESSURE低于120/80为正常，120到129且舒张压低于80为升高，收缩压130到139或舒张压80到89为1期高血压，140或90及以上为2期高血压；TEMPERATURE约为36.5到37.5 °C（97.7到99.5 °F）；OXYGEN SATURATION为95到100%，COPD患者通常的目标为88到92%。PULSE PRESSURE是收缩压减去舒张压，正常约为40；它在颅内压升高时增宽，在低血容量性休克时变窄（早期感染性休克可使其增宽）。MEAN ARTERIAL PRESSURE（舒张压加上脉压的三分之一）至少需要达到65才能为器官供血。ORTHOSTATIC HYPOTENSION是指站立后三分钟内收缩压下降20或舒张压下降10。儿童的数值更高：新生儿心率约为110到160，呼吸为30到60，两者都会在儿童期逐渐降至成人水平。

Adult normals: HEART RATE 60 to 100 beats per minute; RESPIRATIONS 12 to 20 per minute; BLOOD PRESSURE under 120/80 is normal, 120 to 129 with a diastolic under 80 is elevated, a systolic of 130 to 139 or a diastolic of 80 to 89 is stage 1 hypertension, and 140 or 90 and above is stage 2; TEMPERATURE roughly 36.5 to 37.5 °C (97.7 to 99.5 °F); OXYGEN SATURATION 95 to 100%, with 88 to 92% the usual target in COPD. PULSE PRESSURE is systolic minus diastolic, normally about 40; it widens with increased intracranial pressure and narrows in hypovolemic shock (early septic shock can widen it). MEAN ARTERIAL PRESSURE (diastolic plus one third of the pulse pressure) needs to be at least 65 to perfuse organs. ORTHOSTATIC HYPOTENSION is a drop of 20 systolic or 10 diastolic within three minutes of standing. Children run faster: a newborn's heart rate is about 110 to 160 and respirations 30 to 60, both falling toward adult values through childhood.

🏥 真实场景

🧮 一位患者的血压是88/64：已经属于低血压，脉压为24（偏窄），MAP约为72。接下来的数值是84/70：脉压为14，MAP约为75。MAP仍高于65，但收缩压降至90以下且脉压变窄意味着代偿正在失效，所以要立即报告。考试奖励的是能看出趋势的考生，而不是只看单次读数的人。

🧮 A client's blood pressure is 88/64: already hypotensive, with a pulse pressure of 24 (narrow) and a MAP of about 72. Then the next set reads 84/70: pulse pressure 14 and MAP about 75. The MAP still clears 65, but a falling systolic below 90 with a narrowing pulse pressure means compensation is failing, so report it now. The exam rewards candidates who see the trend, not the single reading.

📌 要点总结

  • 成人：HR 60–100，RR 12–20，BP低于120/80，SpO2 95–100%Adult: HR 60–100, RR 12–20, BP under 120/80, SpO2 95–100%
  • 脉压在ICP升高时增宽，在低血容量性休克时变窄；MAP至少65Pulse pressure widens with raised ICP and narrows in hypovolemic shock; MAP at least 65
  • 新生儿：HR约110–160，RR 30–60Newborns: HR about 110–160, RR 30–60

📖 本课术语

脉压 (Pulse pressure): 收缩压减去舒张压，正常约为40；休克时变窄，颅内压升高时变宽。

平均动脉压（MAP） (Mean arterial pressure (MAP)): 推动血液流向器官的平均压力，必须保持在65 mmHg或以上。

✅ 自我测试

护士应该立即报告哪一组成人生命体征？Which adult vital sign set should the nurse report immediately?
  1. HR 64，RR 14，BP 124/78，SpO2 96%HR 64, RR 14, BP 124/78, SpO2 96%
  2. HR 88，RR 18，BP 132/84，SpO2 95%HR 88, RR 18, BP 132/84, SpO2 95%
  3. HR 76，RR 16，BP 118/76，SpO2 97%HR 76, RR 16, BP 118/76, SpO2 97%
  4. HR 122，RR 26，BP 86/60，SpO2 90%HR 122, RR 26, BP 86/60, SpO2 90%

答案: D · HR 122，RR 26，BP 86/60，SpO2 90%

心动过速、呼吸急促、低血压和血氧饱和度低同时出现，提示休克或脓毒症，需要立即处理。HR 88，RR 18，BP 132/84，SpO2 95%最多只是血压轻度升高，其他数值正常，因此可以等常规报告。

Tachycardia, tachypnea, hypotension and a low saturation together suggest shock or sepsis and need immediate action. HR 88, RR 18, BP 132/84, SpO2 95% is at most a mildly elevated blood pressure with otherwise normal values, so it can wait for routine reporting.

一位患者平躺时血压为130/70，站立两分钟后为104/58。护士应如何解读？A client's blood pressure is 130/70 lying down and 104/58 after standing for two minutes. How should the nurse interpret this?
  1. 体位改变后的正常变化Normal variation after a position change
  2. 体位性低血压；有跌倒风险Orthostatic hypotension; a fall risk
  3. 高血压急症Hypertensive urgency
  4. 只有舒张压的变化有临床意义Only the diastolic change is clinically meaningful

答案: B · 体位性低血压；有跌倒风险

站立后三分钟内收缩压下降至少20或舒张压下降至少10，即可定义为体位性低血压。要预防跌倒。将其称为正常变化忽视了数字：收缩压下降了26点，舒张压下降了12点，两者都超过了界值。

A drop of at least 20 systolic or 10 diastolic within three minutes of standing defines orthostatic hypotension. Protect against falls. Calling it normal variation ignores the numbers: the systolic fell 26 points and the diastolic 12, both past the cutoffs.

一位头部受伤患者的血压从120/80变为168/60，心率为52。脉压增宽伴心动过缓提示什么？A head-injured client's blood pressure moves from 120/80 to 168/60 with a heart rate of 52. What does the widening pulse pressure with bradycardia suggest?
  1. 低血容量性休克Hypovolemic shock
  2. 伤后正常适应Normal post-injury adaptation
  3. 颅内压升高Rising intracranial pressure
  4. 脱水Dehydration

答案: C · 颅内压升高

脉压增宽、心动过缓和呼吸不规则构成Cushing三联征，是颅内压升高的晚期征象。低血容量性休克会引起心动过速和脉压变窄，与这一模式正好相反。

Widened pulse pressure, bradycardia and irregular respirations form Cushing's triad, a late sign of rising intracranial pressure. Hypovolemic shock produces tachycardia and a narrowing pulse pressure, the opposite of this pattern.

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