[醫(yī)藥衛(wèi)生]心電圖診斷教程-文庫吧資料
2024-10-24 23:04本頁面
【正文】 orphine (if pain not relieved with NTG) ? βadrenergic blockers ? Heparin Medications on the Crash Cart ? Bradycardias, for example: ? Atropine ? Stable and unstable tachycardias, for example: ? Adenosine ? Βadrenergic blockers ? Calcium channel blockers ? Digoxin ? Procainamide ? Amiodarone ? Lidocaine Defibrillation ? Delivery of large amounts of electric current through the chest over a very brief period of time ? Depolarizes myocardial cells to allow coordinated activity to resume (terminating VF) ? Electrophysiological event that occurs 300 to 500 milliseconds after shock delivery ? VF frequently reoccurs after a successful shock 2 Types of Defibrillators ? Automated External Defibrillators (AEDs): ? To be used by lay rescuers or healthcare providers ? Part of basic life support ? Manual defibrillators (with cardioversion, pacing capabilities) ? Advanced life support therapies Automated External Defibrillators ? Increased presence in nonmedical settings ? Airports ? Airplanes ? Shopping centers ? Casinos AED ? Computerized devices ? Use voice and visual prompts ? Guide lay rescuers and healthcare providers to safely defibrillate VF ? New prototypes may provide information about frequency and depth of chest pressions AED ? Assess heart rhythm through electrodes on torso ? If needed, the AED advises responder to administer a shock to restore normal rhythm ? Small, lightweight AED AED AED ? Microprocessors analyze frequency and amplitude of the ECG signal ? Filters check for: ? QRSlike signals ? Radio transmission ? 50 or 60 Hz interference ? Loose electrodes ? Poor electrode contact ? Some programmed to detect spontaneous movement by patient or others ? Proven to be very accurate in rhythm analysis New BLS and ACLS Guidelines ? 2021 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care ? 4_suppl ? Webcast: ml?identifier=3037720hospital Defibrillation and CPR ? Early defibrillation critical to survival from sudden cardiac arrest – Why? ? Most frequent initial rhythm is VF ? Treatment for VF is defib
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