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心跳呼吸停止后,必然存在着酸碱平衡和电解质的改变。虽然在心肺复苏阶段已予处理但在复苏后仍可继续存在。 一、酸碱平衡的改变 酸碱平衡对人体的影响是很大的。酸中毒对人体的影响有如下几个方面,可使心肌收缩力减低,心排血量减少,周围血管扩张,血压降低,并且对儿茶酚胺类药物反应性降低,心率缓慢,降低室颤的阈值,易发生肺水肿,加重脑、肾损害,诱发DIC。碱中毒对人体的影响有以下几个方面,可使脑血管收缩,脑血流量减少,导致眩晕和意识丧失,心肌收缩力减弱,血钾、血钠、血钙均可减少,诱发心律失常,并且如不纠正碱中毒和低钾血症,则对任何抗心律失常药物均无效,碱中毒时血红蛋白对氧的亲和力大大增加,即氧离曲线左移,氧合血红蛋白在组织中释放减少,以致组织缺氧。
Heartbeat breathing stopped, there must be a change in acid-base balance and electrolyte. Although it has been disposed of during cardiopulmonary resuscitation, it can continue after recovery. First, the changes in acid-base balance Acid-base balance on the impact of the human body is great. Acidosis on the human body has the following aspects, can reduce myocardial contractility, decreased cardiac output, peripheral vasodilation, blood pressure, and decreased response to catecholamines, slow heart rate, reduce the threshold of ventricular fibrillation, Prone to pulmonary edema, increased brain and kidney damage, induced DIC. Alkaline poisoning on the human body has the following aspects, can make cerebral vasoconstriction, reduced cerebral blood flow, resulting in loss of consciousness and dizziness, myocardial contractility, serum potassium, serum sodium, calcium can be reduced, induced arrhythmia, And if not correct alkali poisoning and hypokalemia, then any anti-arrhythmic drugs are ineffective, alkalosis, hemoglobin greatly increased the affinity for oxygen, that oxygen left curve shift, oxyhemoglobin in the organization to reduce the release, resulting in Hypoxia tissue.