反搏压-西南心血管
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体外反搏疗法名词解释体外反搏法是我国医学界自行研发的一种治疗全身缺血性疾病的无创性的、无痛苦的物理疗法。
它的主要工作原理是在患者四肢和臀部扎上气囊,连接上特定的气源,配上专门设计的电气控制部分,利用患者自身的心电信号进行固定触发,并与心脏保持严格的同步工作,当心脏进入舒张期开始之际,扎于四肢和臀部的气囊充气自远端序贯的加压四肢和臀部,迫使血液返回主动脉,从而提高主动脉舒张压。
其次,体外反搏可使静脉回心血流量增加,心输出量也随之增加。
再次在心脏收缩之前气囊迅速放气,对肢体解除压迫,肢体受压的血管转为开放,从而可减少主动脉射血输出阻力,减轻心脏后负荷。
它主要适用于各种缺血性疾病的治疗。
反搏(Counterpulsation)反搏是通过机械的方式,使主动脉内收缩期血压降低和舒张期血压增高,以达到辅助心脏做功,改善血液循环,增加心、脑、肾等器官的血流灌注的一种辅助循环方法。
反搏通过提高主动脉舒张压以增加冠状动脉的供血,抢救缺血的心肌,使心脏泵血功能得到增进。
常用的反搏方法有主动脉内气囊反搏和体外反搏两种。
体外反搏(External Counterpulsation,ECP)体外反搏是一种通过体外无创性按压下半身的方法,减轻和消除心绞痛症状,改善机体重要脏器的缺氧缺血状态,同时也是一种用于防治心脑血管疾病的医疗设备。
它是通过包裹在四肢和臀部的气囊,在心脏舒张期对气囊充气加压,促使肢体动脉的血液驱返至主动脉,使舒张压明显增高,为心脏增加血流,降低心脏后负荷;在心脏收缩期气囊迅速排气,压力解除,促使主动脉内收缩压下降,最大限度减轻心脏射血期阻力,血液加速流向远端,从而达到反搏效应。
体外反搏治疗的独特之处在于它是无创性的治疗,避免了侵入性治疗所产生的副作用,同时操作简便、易于推广普及。
这种治疗不需要病人住院,在门诊即可完成。
在心脑血管病防治与康复领域有广泛的应用前景,同时也有益于运动员疲劳恢复,糖尿病、功能性性功能障碍等相关疾病的治疗。
iabp反搏压的定义及正常值-回复IABP (Intra-Aortic Balloon Pump) is a mechanical device used to assist the heart in pumping blood effectively. It is primarily utilized in patients with severe heart failure or during cardiac surgery. This article aims to provide an in-depth understanding of the definition and normal values of IABP counterpulsation.I. Definition of IABP CounterpulsationIABP counterpulsation is a technique that involves the use of an inflatable balloon located in the aorta, the body's largest artery. The balloon is inserted into the aorta through a catheter, typically placed via the femoral artery in the groin. The catheter is connected to an external machine that rhythmically inflates and deflates the balloon.During inflation, the balloon fills with air or helium, expanding and temporarily blocking the flow of blood in the aorta. This increases the pressure in the aorta, which in turn improves coronary artery perfusion and facilitates blood flow to the vital organs. When the heart contracts, the balloon deflates, reducing the resistance against which the heart pumps blood and improving its overallefficiency.II. Indications for IABP CounterpulsationIABP counterpulsation is utilized in various clinical scenarios, including:1. Cardiogenic shock: In severe cases of heart failure, the heart may be unable to pump sufficient blood to meet the body's demand. IABP counterpulsation can improve cardiac output and tissue perfusion, stabilizing the patient's condition until further measures are taken.2. High-risk coronary angioplasty: During the percutaneous coronary intervention (PCI) procedure, the inflation of the coronary balloon can cause temporary myocardial ischemia. By counterpulsation, IABP can improve coronary perfusion, reducing the risk of complications.3. Preoperative stabilization: In certain cases, patients scheduled for cardiac surgery may be at high risk due to underlying conditions. IABP counterpulsation can enhance myocardial oxygen supply andreduce the workload on the heart, preparing the patient for a smoother surgical outcome.III. Normal Values for IABP CounterpulsationTo ensure optimal hemodynamic support, specific parameters need to be considered when using IABP counterpulsation. These parameters include:1. Dicrotic augmentation: Dicrotic augmentation is the magnitude of pressure increase following balloon deflation. Normally, it should be around 2-10 mmHg. Higher values may indicate impaired cardiac performance, while lower values may suggest inadequate unloading of the heart.2. Augmentation index: The augmentation index represents the amount of systolic pressure increase caused by the balloon during counterpulsation. It should range between 5 and 30. Values outside this range may indicate suboptimal balloon timing or inadequate unloading of the left ventricle.3. Diastolic augmentation: Diastolic augmentation is the increase indiastolic pressure caused by the balloon inflation. The normal range is 2-12 mmHg. Elevated diastolic augmentation may indicate increased coronary perfusion, while lower values may suggest insufficient unloading.It is essential to monitor these parameters continuously to adjust the balloon timing and inflation/deflation ratio appropriately. The aim is to synchronize balloon inflation with the cardiac cycle to optimize coronary perfusion, reduce myocardial workload, and improve overall cardiac output.In conclusion, IABP counterpulsation is a valuable technique used to assist the heart in pumping blood effectively during severe heart failure or cardiac surgery. By understanding its definition and normal values, healthcare professionals can better utilize this technique to optimize patient outcomes.。
2024主动脉内球囊反搏(IABP )的原理和护理基本概念主动脉球囊反搏(intra-aortic balloon pump , IABP )是将一球囊通过股动脉穿刺方法置入到降主动脉与肾动脉之间,由主动脉球囊反搏泵驱动和控制,在心脏舒张期开始充气,在心脏舒张期末放气,从而达到增加冠状动脉灌注,降低心脏负荷目的的一种治疗方法。
心脏的冠状动脉供血主要在舒张期,冠状动脉血流量取决于舒张期的时间长短和灌注压力,换句话说,主动脉根部舒张压和心率是冠状动脉供血的重要影响因子。
另外,冠状动脉功能和病变以及心室末压也影响冠状动脉供血。
增加心肌耗氧量的因素包括心率、心肌顺应性和心肌收缩力,心肌顺应性可以理解为心腔舒张末或心脏前负荷,心肌收缩力可以理解为心脏后负荷。
临床实践中冠脉供血减少的常见原因包括:严重的冠状动脉狭窄病变或阻塞情况,如血栓或冠状动脉痉挛;左心功能不全,左心室舒张末压增高;严重的主动脉瓣狭窄或关闭不全;高血压引起的心肌肥厚;心率过快引起心肌舒张期相对缩短;交感神经张力增高引起心脏后负荷增高;各种原因引起的水钠潴留致心脏前负荷增加。
IABP目前已经广泛用于临床,是抢救急危重症心脏病患者的重要治疗手段。
工作原理在心脏舒张期开始,主动脉瓣关闭的瞬间,球囊被迅速充气,使主动脉根部舒张压增高,冠状动脉的灌注压增高,脑、上肢动脉的供血增加,肾动脉及下肢动脉的供血也增加;在下一个心脏收缩期前,球囊被迅速抽空,使主动脉根部形成相对负压状态,左心室射血阻力降低,心脏后负荷下降, 提高左心室排出量,同时左心室舒张末压下降,心肌耗氧量下降。
总之,IABP的血流动力学效应是改善冠脉供血、降低心脏后负荷和室壁张力、中等程度增加心排血量、维持血压等。
组成部分IABP主要由主动脉球囊导管和驱动控制系统两部分组成。
球囊导管置于患者体内,驱动控制系统在患者体外,两者通过气导管和中心压力管相连接。
IABP通过中心腔压力管检测主动脉根部压力,通过体表心电图获取患者信息,控制球囊的充气和放气时相。