过量服用通道阻塞剂:并非所有毒性都相同
Geoffrey K Isbister1,2, Shane Jenkins1, Keith Harris3,4
1Clinical Toxicology Research Group, University of Newcastle, Newcastle, Australia.
British journal of clinical pharmacology
|September 21, 2024
概括
基管阻断剂 (CCB) 过量服用正在增加,其中安洛迪平是最常见的. 过量服用迪尔蒂亚泽姆和维拉帕米尔会产生更严重的毒性,并且与二皮里丁相比,需要不同的治疗方法.
科学领域:
- 心脏病学 心脏病学
- 毒理学 毒理学 毒理学
- 药理学 药理学是指药理学的学科.
背景情况:
- 通道阻塞剂 (CCB) 是广泛用于心血管疾病的药物.
- 过量服用CCB,特别是二皮里丁,构成了严重的毒理学挑战.
- 了解不同CCB过量剂的比较严重程度和管理对于临床实践至关重要.
研究的目的:
- 为了比较涉及不同类型通道阻塞剂的过量剂的严重程度和治疗策略.
- 分析CCB过量呈现的趋势,重点关注二二二的日益使用.
主要方法:
- 在2014年至2023年期间,对2个毒理学部门呈现的236个CCB过量剂的回顾性审查.
- 从临床数据库中提取数据,包括患者人口统计数据,摄入剂量,共摄入剂,临床并发症,治疗方法和患者结局.
- 对不同CCB药物的比较分析,重点是二二和非二二 (diltiazem,verapamil).
主要成果:
- 在研究期间,二皮里丁过量剂量显著增加, amlodipine 是最常见的药物 (147例).
- 与二二二相比,过量服用迪尔提亚和维拉帕米尔与更频繁的重症监护病房入院,心律失常和更长的住院时间有关.
- 在CCB过量服用中,低血压是常见的,因诺托普剂,血管压缩剂,高剂量胰岛素和的多样化使用,二皮里丁和非二皮里丁摄入之间存在差异. 发生了7起死亡 (3%).
结论:
- 双胺,特别是安洛迪平,现在是CCB过量服用中最常见的药物.
- 过量服用迪尔提阿泽姆和维拉帕米尔与二皮里丁相比,与更严重的毒性和不同的管理要求有关.
- 临床管理应根据涉及过量服用的特定CCB剂量进行量身定制,以优化患者的治疗结果.
相关概念视频
Antihypertensive Drugs: Action of Calcium Channel Blockers
471
Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
471
Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers
1.3K
Class I antiarrhythmic drugs are used to treat various types of arrhythmias or irregular heart rhythms. These drugs block the sodium (Na+) channels in the cardiac cells, thereby affecting the movement of electrical impulses across the heart. Class I antiarrhythmic drugs are divided into three subgroups: Class IA, Class IB, and Class IC, each with distinct mechanisms of action and effects on the heart.
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
1.3K
Antianginal Drugs: Calcium Channel Blockers and Ranolazine
462
Angina pectoris, a primary symptom of ischemic heart disease, requires careful pharmacological interventions. In this context, calcium channel blockers (CCBs) and ranolazine have emerged as crucial pharmacotherapeutic agents, providing deep insights into the complexities of angina management.
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...
CCBs, a diverse class that includes dihydropyridines (nifedipine) and diphenylalkylamines (verapamil and diltiazem), exert their effect by blocking calcium channels in cardiac and smooth muscle cells. This...
462
Antiarrhythmic Drugs: Class IV Agents as Calcium Channel Blockers
791
Class IV antiarrhythmic drugs, such as verapamil and diltiazem, block calcium channels. They primarily affect the heart, slowing the conduction in calcium-dependent tissues like the SA and AV nodes. These drugs manage reentrant supraventricular tachycardia (SVT) and reduce ventricular rate in atrial flutter/fibrillation.
Verapamil, a calcium channel blocker, inhibits calcium movement across myocardial cell membranes and vascular smooth muscle. This results in the dilation of coronary and...
Verapamil, a calcium channel blocker, inhibits calcium movement across myocardial cell membranes and vascular smooth muscle. This results in the dilation of coronary and...
791
Antiepileptic Drugs: Calcium Channel Blockers
341
Calcium channel blockers, a class of antiepileptic drugs, regulate the flow of calcium ions within neurons.
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...
341
Heart Failure Drugs: Inotropic Agents
539
Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
539


