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91呼吸衰竭的护理查房 PPT课件

  • 2026-06-12 22:20:40
91呼吸衰竭的护理查房 PPT课件

呼吸衰竭的护理查房

PPT附后,文章编号91

各种原因引起的肺通气和(或)换气功能严重障碍,以致在静息状态下亦不能维持足够气体交换,导致缺氧伴(或不伴)二氧化碳潴留。本次查房旨在通过具体病例,深入探讨呼吸衰竭的护理与相关知识。

一、病例介绍

1. 病历汇报

患者张XX,男,69岁,以“反复咳嗽、咳痰10年,气短3年,加重1周”为主诉于20XX328日入住呼吸内科。患者10年前因受凉后出现阵发性咳嗽、咳痰,为白色泡沫痰;近3年来,咳嗽咳痰症状发作频繁,且伴有胸闷、气短,以活动及咳嗽后为著,偶有呼吸困难,曾多次住院治疗。1周前再次受凉后出现阵发性咳嗽、咳痰,为白色泡沫痰且不易咳出,静息时感胸闷、气短,夜间侧卧休息,伴头痛、头晕,无畏寒、发热,在社区医院输液治疗后症状无缓解。

为进一步诊治,急来我院,门诊以1. Ⅱ型呼吸衰竭;2. 慢性支气管炎急性发作;3. 慢性阻塞性肺气肿;4. 慢性肺源性心脏病”收入院。患者否认“糖尿病、高血压”等慢性病病史。入院时测生命体征:体温 36.8℃,脉搏 114/分,呼吸 26/分,血压 130/80mmHg。平车推入病房,患者神志清,精神差,口唇及甲床紫绀,双下肢水肿。遵医嘱给予Ⅰ级护理,报病重,氧气吸入 2/分,心电监测及血氧饱和度监测。治疗给予抗感染、祛痰、平喘、改善循环等对症治疗,入院后患者咳嗽、气短症状较前减轻。

2. 实验室及影像学检查

•血气分析:pH 7.37PCO2 70mmHgPO2 35mmHgHCO3- 39.5mmol/LBE -8.5mmol/LSPO2 62.5%

•常量元素:K 3.8mmol/LNa 140.3mmol/LCa 2.04mmol/LCl 93.3mmol/L

•肝功能:总蛋白 57.9g/L,白蛋白 37.2g/L,球蛋白 20.7g/L,总胆红素 20.2umol/L

•凝血四项:凝血酶原时间 15.3秒,凝血酶原时间比值 1.28,凝血酶时间 15.5秒,部分凝血活酶时间 30.5秒。

•胸部CT:胸廓对称,肺窗示双肺纹理增多、增粗,呈“网格状”改变,部分支气管壁增厚,呈“双轨状”。双肺上叶可见多发类圆形低密度透亮区,边界清楚。左肺上叶尖后段可见点状高密度钙化影。纵膈内未见肿块及肿大淋巴结。

二、疾病相关知识

1. 定义

呼吸衰竭是指各种原因引起的肺通气和(或)换气功能严重障碍,以致在静息状态下亦不能维持足够的气体交换,导致缺氧伴(或不伴)二氧化碳潴留,从而引起一系列生理功能和代谢紊乱的临床综合征。临床常表现为呼吸困难、发绀等。

2. 分类

•按动脉血气分析结果分类:

◦Ⅰ型呼衰:PaO2 < 60mmHgPaCO2降低或正常。

◦Ⅱ型呼衰:PaO2 < 60mmHgPaCO2 > 50mmHg

•按起病急缓分类:

◦急性呼衰:由突发致病因素所致。

◦慢性呼衰:由慢性疾病所致,以慢性阻塞性肺疾病(COPD)最为常见。

•按发病机制分类:

◦泵衰竭:主要表现为Ⅱ型呼衰。

◦肺衰竭:主要表现为Ⅰ型呼衰。

3. 病因

呼吸衰竭的常见病因主要包括以下五类:肺组织疾病:如肺结核、肺水肿等。 胸廓与胸膜病变:如气胸、胸廓畸形等。 神经肌肉病变:如重症肌无力等。 肺血管病变:如肺栓塞等。 气道阻塞性病变:如慢性阻塞性肺气肿、严重哮喘等。

此外,从病理生理机制来看,病因还可追溯至脑部疾病引起的呼吸中枢障碍、上/下运动神经元传导受阻、脊髓前角细胞受损、神经肌肉接头阻滞、呼吸肌功能障碍、气道阻力增加、胸壁和胸膜腔结构完整性的破坏、肺实质与间质病变,以及肺或胸膜弹性改变等。

4. 发病机制

呼吸衰竭的发病机制主要包括以下五个方面:

1、肺通气功能障碍:在静息呼吸空气时,总肺泡通气量约为 4L/min 才能维持正常肺泡氧和二氧化碳分压。当发生肺泡通气量不足时,会导致肺泡氧分压下降、肺泡二氧化碳分压升高,进而引发Ⅱ型呼吸衰竭。其关系可表示为:PACO2 = 0.863 × VCO2 / VA(其中VCO2CO2产生量,VA为肺泡通气量)。

2、通气/血流比例失调:正常通气/血流比值(V/Q)约为 0.84L/5L)。当 V/Q > 0.8 时,表现为无效腔通气;当 V/Q < 0.8 时,表现为肺动-静脉样分流。V/Q 失调通常仅产生缺氧,但严重的 V/Q 失调也可导致 CO2 潴留。

3、肺动-静脉样分流增加:肺动-静脉样分流增加使静脉血没有机会接触肺泡气体进行气体交换,直接流入肺静脉。这种情况引起的低氧血症不能用吸入高浓度氧解决。常见于肺泡萎陷、肺不张、肺水肿、肺实变等情况。

4、氧耗量增加:机体在发热、寒战、呼吸困难或抽搐等情况下,氧耗量显著增加,进一步加重缺氧状态。

5、弥散功能障碍:由于肺泡膜面积减少或肺泡膜异常增厚,导致气体弥散能力下降,引发低氧血症。

ppt源文件⬇️⬇️【编号71】

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  1. CONNECT:[ UseTime:0.000481s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000541s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000283s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000302s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000470s ]
  6. SELECT * FROM `set` [ RunTime:0.000193s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000597s ]
  8. SELECT * FROM `article` WHERE `id` = 512105 LIMIT 1 [ RunTime:0.009888s ]
  9. UPDATE `article` SET `lasttime` = 1781414078 WHERE `id` = 512105 [ RunTime:0.002694s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000454s ]
  11. SELECT * FROM `article` WHERE `id` < 512105 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001275s ]
  12. SELECT * FROM `article` WHERE `id` > 512105 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.003029s ]
  13. SELECT * FROM `article` WHERE `id` < 512105 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.021233s ]
  14. SELECT * FROM `article` WHERE `id` < 512105 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.014407s ]
  15. SELECT * FROM `article` WHERE `id` < 512105 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.045402s ]
0.175983s