V fib treatment acls

ACLS Tachycardia Algorithm. The ACLS Tachycardia Algorithm is used for patients who have marked tachycardia, usually greater than 150 beats per minute, and a palpable pulse. Some patients may have cardiovascular instability with tachycardia at heart rate less than 150 bpm. It is important to consider the clinical context when treating adult ...

V fib treatment acls. For this case, you use the Acute Coronary Syndromes Algorithm to guide the assessment and management of patients with signs and symptoms of acute coronary syndromes. A key focus of the case is the identification and treatment of ST-segment elevation myocardial infarction (STEMI). You use a 12-lead ECG to evaluate the patient's rhythm.

Atrial fibrillation (AF) is an abnormal rhythm caused by the rapid firing of multiple cells in the atria, the upper chambers of the heart, which cause the atria to quiver ineffectively. Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia encountered in clinical practice and is associated with increased risk of stroke ...

Ventricular tachycardia (VT) is a wide complex tachycardia, defined as three or more consecutive beats at a rate of more than 100 per minute, arising from the ventricle.[1] Ventricular tachycardia is a potentially life-threatening arrhythmia, and it is responsible for the majority of sudden cardiac deaths in the United States.[2] It is classified by duration as non-sustained or sustained ...Earn unlimited cash-back rewards on all purchases, along with Amex benefits with the Credit One Bank American Express Card. Explore more! We may be compensated when you click on pr...Refractory ventricular fibrillation (RVF) is a life-threatening cardiac arrhythmia unresponsive to traditional methods of defibrillation and advanced cardiovascular life support ( ACLS ). Current literature lacks a uniform definition for RVF, however, some studies provide more specific clinical definitions of refractory ventricular fibrillation ...This 2018 American Heart Association (AHA) focused update on the advanced cardiovascular life support (ACLS) guidelines for cardiopulmonary resuscitation (CPR) and emergency cardiovascular care (ECC) is based on the systematic review of antiarrhythmic therapy and the resulting “2018 International Consensus on CPR and …A lie is a false statement that is said intentionally to a person to hide the truth that has harmful consequences, while a fib is a statement said about something unimportant or mi...The H’s and T’s of ACLS is a mnemonic used to help recall the major contributing factors to pulseless arrest including PEA, Asystole, Ventricular Fibrillation, and Ventricular Tachycardia. These H’s and T’s will most commonly be associated with PEA, but they will help direct your search for underlying causes to any of arrhythmias associated with ACLS.Tests are done to check the heart and confirm a diagnosis of ventricular tachycardia, also called V-tach or VT. Test results also can help determine if another health problem is causing V-tach. Electrocardiogram (ECG or EKG). This is the most common test to diagnose tachycardia. An ECG shows how the heart is beating.

CPR indicates cardiopulmonary resuscitation; ET, endotracheal; IO, intraosseous; IV, intravenous; pVT, pulseless ventricular tachycardia; and VF, ventricular fibrillation.Atrial Fibrillation (AFib) rhythm video by the ACLS Certification Institute. To view more videos, check out the ACLS Certification Institute at http://www.ac...A lie is a false statement that is said intentionally to a person to hide the truth that has harmful consequences, while a fib is a statement said about something unimportant or mi...Ventricular Fibrillation (V-Fib) Hypertrophic Cardiomyopathy; Recurrent Hemodynamically; Unstable Ventricular Tachycardia; Supraventricular Tachyarrhythmias; Amiodarone Dosage. For VT / V-Fib: 300 mg IV/IO. May administer additional 150 mg following initial dose if VF/pVT persists after 3-5 minutes. For Tachy / VT: 150 mg IV/IO over 10 minutes ...Atrial Fibrillation. A 68-year-old male presents with palpitations, lightheadedness, and weakness. These symptoms appear to worsen with increased alcohol intake. Medical history is significant for hypertension being treated with hydrochlorothiazide. On physical exam, the patient appears uncomfortable.The 2020 ACLS guidelines provide recommendations on the medication-specific management for arrhythmias including wide-complex tachycardia, regular narrow-complex tachycardia, atrial fibrillation/flutter, and bradycardia [ 1 ]. There are also our 2020 ACLS guideline summaries on vasopressor and non-vasopressor medications used during cardiac ...

Subsequently bretylium has been removed from ACLS treatment algorithms and guidelines because of a high occurrence of side effects, the availability of safer agents at least as efficacious, and the limited supply and availability of the drug. ... the Diltiazem-Atrial Fibrillation/Flutter Study Group. Efficacy and safety of intravenous diltiazem ...Need a pet-friendly car rental? We list the car rental agencies that allow dogs and other pets, including their fees and restrictions. Most major car rental companies are pet-frien...Adenosine has been used in the emergency treatment of arrhythmia for more than nine decades. However, cardiologists are often unfamiliar about its basic mechanism and various diagnostic and therapeutic uses, considering it mainly as a therapeutic drug for supraventricular tachycardia. This article discusses the role of adenosine relevant to ...When the heart rate is extremely rapid, it may be difficult to determine if the rate is irregular, and the absence of p-waves will be the best indicator of atrial fibrillation. ACLS Treatments: For the purposes of ACLS atrial fibrillation is treated when the arrhythmia/tachyarrhythmia produces hemodynamic instability and serious signs and …The American Heart Association (AHA) Advanced Cardiovascular Life Support (ACLS) certification is a widely recognized credential for healthcare professionals who are involved in th...

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Amiodarone is primarily chosen for ACLS as the first-line antiarrhythmic agent for cardiac arrest. This is because it is effective in improving the rate of return of spontaneous circulation (ROSC) and improved ROSC to hospital admission in adults with refractory v-fib or pulseless v-tach. Amiodarone may be considered when v-fib and v-tach is ...Out-of-hospital cardiac arrest accounts for more than 350,000 unexpected deaths each year in North America; nearly 100,000 of these cardiac arrests are attributed to ventricular fibrillation or ...When drugs are considered for shock-refractory V-Fib/V-Tach, amiodarone 300 mg IV is supported by more evidence of efficacy than any other drug. ... and that they should not be administered until more effective treatments (amiodarone) have been tried without success. Bretylium has been removed from ACLS algorithms, as it is no longer available ...Adult Dosage for Lidocaine: Dosage for cardiac arrest from ventricular fibrillation or pulseless ventricular tachycardia: Initial dose is 1 to 1.5 mg/kg IV or IO. Can also be delivered via endotracheal tube. Dosage for refractory ventricular fibrillation: An additional .5 to .75 mg/kg may be given via IV push.Ventricular fibrillation falls under the ACLS Adult Cardiac Arrest Algorithm and is the most important algorithm to know for adult resuscitation. Ventricular fibrillation treatment starts with early and effective CPR …

https://www.proacls.com - ACLS Certification Training Videos**Get $20 off your certification or recertification with the discount code youtubeacls2017The key...Lidocaine is an antiarrhythmic that can also be used and is considered equivalent to amiodarone in the treatment of ventricular fibrillation or pulseless ventricular tachycardia. Dosing. Provide an initial dose of 1-1.5 mg/kg IV or IO. If pVT or VF persists the lidocaine may be repeated at 0.5-0.75 mg/kg over 5 to 10 minute intervals ...ACLS Tachycardia Algorithm. The ACLS Tachycardia Algorithm is used for patients who have marked tachycardia, usually greater than 150 beats per minute, and a palpable pulse. Some patients may have cardiovascular instability with tachycardia at heart rate less than 150 bpm. It is important to consider the clinical context when treating adult ...This 2018 American Heart Association (AHA) focused update on the advanced cardiovascular life support (ACLS) guidelines for cardiopulmonary resuscitation (CPR) and emergency cardiovascular care (ECC) is based on the systematic review of antiarrhythmic therapy and the resulting “2018 International Consensus on CPR and ECC Science With …Electrical external defibrillation remains the most successful treatment of ventricular fibrillation (VF). A shock is delivered to the heart to uniformly and simultaneously depolarize a critical mass of the excitable myocardium. ... (EMS) in the AHA ACLS guidelines. [18, 29, 30] AED units that can analyze the smoothness of the VF …Open all. Key points. Introduction. Guidelines. References. Additional resources. Guidelines for treating adults who require advanced life support, including concise guidelines for …Severe leg pain can be caused by Achilles tendon problems, an ACL injury, a broken leg, bursitis and a herniated disk, according to Mayo Clinic. Leg pain can also be related to sci...During ACLS, epinephrine can be given 3 ways: intravenous; intraosseous, and endotracheal tube. Dosing. Intravenous Push/IO: 1mg epinephrine IV is given every 3-5 minutes. IV infusion for bradycardia: 1mg epinephrine is mixed with 500ml of NS or D5W. The infusion should run at 2-10 micrograms/min (titrated to effect).Oct 28, 2022 · Ventricular fibrillation is an emergency that requires immediate medical attention. It's the most frequent cause of sudden cardiac death. Emergency treatment for ventricular fibrillation includes cardiopulmonary resuscitation (CPR) and shocks to the heart with a device called an automated external defibrillator (AED).

The treatment for ventricular fibrillation is rapid defibrillation. Every minute that defibrillation is delayed, the chance of survival is reduced by 10%. The key steps to treating ventricular fibrillation are: Rapid assessment to confirm cardiac arrest. Starting CPR. Applying the defibrillator and delivering the first shock as soon as possible.

About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...Ventricular fibrillation falls under the ACLS Adult Cardiac Arrest Algorithm and is the most important algorithm to know for adult resuscitation. Ventricular fibrillation treatment starts with early and effective CPR with the application of oxygen and monitor/defibrillator placement.Since the ventricles are responsible for pumping blood to the lungs and throughout the body, ventricular arrhythmias are often deadly. When talking about ventricular arrhythmias, we are primarily talking about VTACH (ventricular tachycardia), or VFIB (ventricular fibrillation). Ventricular escape rhythm is a backup rhythm for very …Ventricular fibrillation is an emergency that requires immediate medical attention. It's the most frequent cause of sudden cardiac death. Emergency treatment for ventricular fibrillation includes cardiopulmonary resuscitation (CPR) and shocks to the heart with a device called an automated external defibrillator (AED).Atrial fibrillation is generally considered a tachyarrhythmia, (an arrhythmia with a heart rate of more than 100 beats per minute). Patients experiencing atrial fibrillation generally have the following characteristics: P waves are absent. The QRS complex is narrow (less than 0.12 seconds) The R-R intervals are consistently irregular.If you're thinking of creating a subscription box, these subscription box business ideas will inspire you to take the next step. * Required Field Your Name: * Your E-Mail: * Your R...A lie is a false statement that is said intentionally to a person to hide the truth that has harmful consequences, while a fib is a statement said about something unimportant or mi... Indications for ACLS Vasoconstriction effects : epinephrine binds directly to alpha-1 adrenergic receptors of the blood vessels (arteries and veins) causing direct vasoconstriction, thus, improving perfusion pressure to the brain and heart. Asystole and Its Treatment in ACLS. Asystole is defined as a cardiac arrest rhythm in which there is no discernible electrical activity on the ECG monitor. Consequently, it is sometimes referred to as a “flat line.” Confirmation that a “flat line” is truly asystole is an important step in the ACLS protocol.

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Cardiac defibrillation is the act of administering a transthoracic electrical current to a person experiencing one of the two lethal ventricular dysrhythmias, ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT). Under Advanced Cardiac Life Support (ACLS) guidelines, pulseless VT and VF are treated the same. Heart disease ...American Heart Association Advanced Cardiac Life Support (ACLS) guidelines support the use of either amiodarone or lidocaine for cardiac arrest caused by ventricular tachycardia or ventricular fibrillation (VT/VF) based …Learn how to treat a patient in VTach or VFib, two shockable rhythms that can cause cardiac arrest. Follow the ACLS algorithm for initial assessment, CPR, defibrillation, shock, epinephrine, and post-arrest care. Get tips and guidelines from ACLS Medical Training.The most common indications for synchronized cardioversion are unstable atrial fibrillation, atrial flutter, atrial tachycardia, and supraventricular tachycardias. If medications fail in the stable patient with the before mentioned arrhythmias, synchronized cardioversion will most likely be indicated.Watch on. Asystole, sometimes referred to as a flat line on the monitor, represents an absence of both electrical and mechanical activity in the heart. In this lesson, we'll dig a little deeper into what it is and how it can be treated. And at the end of the lesson, you'll find a Word about the duration of resuscitative efforts.American Heart Association Advanced Cardiac Life Support (ACLS) guidelines support the use of either amiodarone or lidocaine for cardiac arrest caused by ventricular tachycardia or ventricular fibrillation (VT/VF) based …Ventricular fibrillation is an emergency that requires immediate medical attention. It's the most frequent cause of sudden cardiac death. Emergency treatment for ventricular fibrillation includes cardiopulmonary resuscitation (CPR) and shocks to the heart with a device called an automated external defibrillator (AED).Ventricular fibrillation (VF) is a life-threatening cardiac arrhythmia in which the coordinated contraction of the ventricular myocardium is replaced by high-frequency, disorganized excitation, resulting in failure of the heart to pump blood. VF is the most commonly identified arrhythmia in cardiac arrest patients.Ventricular fibrillation, or VF, is considered the most serious abnormal heart rhythm. VF is extremely dangerous and can lead to sudden cardiac death. Without treatment, the condition is fatal within minutes. Disordered electrical activity causes the heart’s lower chambers (ventricles) to quiver instead of contracting (or beating) normally.Mar 7, 2011 ... ACLS Part 7 - Ventricular Tachycardia and ... Pulseless Arrest V-Fib Teaching (ACLS Algorithms) ... PVCs: Symptoms and Treatment - in Plain English!Ventricular fibrillation (VF) is due to multiple wavelet reentrant electrical activity and is manifested on electrocardiogram (ECG) by ultrarapid baseline undulations that are irregular in timing and morphology. VF is the presenting rhythm for about 70% of patients in cardiac arrest and is thus the terminal event in many disorders.When drugs are considered for shock-refractory V-Fib/V-Tach, amiodarone 300 mg IV is supported by more evidence of efficacy than any other drug. ... and that they should not be administered until more effective treatments (amiodarone) have been tried without success. Bretylium has been removed from ACLS algorithms, as it is no longer available ... ….

Pulseless electrical activity is not a specific rhythm. Instead, it’s a term used to describe any organized electrical activity – but excluding VFib or asystole — on an ECG or cardiac monitor that is associated with no palpable pulses. Pulsations can be detected by an arterial waveform or Doppler study. However, pulses are not palpable.Learn how to identify, treat, and prevent ventricular fibrillation (VF), a life-threatening arrhythmia that causes sudden cardiac arrest. Find out the ECG pattern, physical symptoms, reversible and irreversible causes, …Ventricular fibrillation is always pulseless and must be confirmed by EKG or defibrillator monitor. Defibrillation is the treatment of choice and should occur as soon as possible. The video below shows an example of what ventricular fibrillation will look like when you see it on the defibrillator monitor.To make things easier, we’ve compiled a quick ACLS review with an updated list of the top 7 ACLS algorithms you need to know so you can begin familiarizing yourself. The algorithms in this ACLS-made-easy guide are as follows: Adult Cardiac Arrest Algorithm. Cardiac Arrest Circular Algorithm. Suspected Stroke Algorithm. Ventricular Fibrillation which occurs in the out-of-hospital setting should be treated with CPR and an AED. Effective CPR and early defibrillation are the keys to positive outcomes for the unresponsive patient who is in ventricular fibrillation. This ACLS scenario will usually involve one or two rescuers in an out-of-hospital setting. IF YES, shock again. Perform CPR for 2 minutes. Administer Amiodarone. (AT ANY TIME DURING THIS YOU CAN GIVE EPI) Study with Quizlet and memorize flashcards containing terms like What is the ACLS algorithm for pulseless VT and Vfib?, How many J's do you normally shock a patient with when you are biphasic defibrillating?, Pulseless VT can …Mar 7, 2011 ... ACLS Part 7 - Ventricular Tachycardia and ... Pulseless Arrest V-Fib Teaching (ACLS Algorithms) ... PVCs: Symptoms and Treatment - in Plain English!Pulseless ventricular tachycardia is a medical emergency. Due to rapid ventricular contractions, the ventricular filling decreases markedly, leading to a dramatic decrease in cardiac output. As a result, a pulse is absent. Electrophysiology identifying factors for pulseless ventricular tachycardia include; tachycardia (>100 bpm), wide … V fib treatment acls, The treatment for ventricular fibrillation is rapid defibrillation. Every minute that defibrillation is delayed, the chance of survival is reduced by 10%. The key steps to treating ventricular fibrillation are: Rapid assessment to confirm cardiac arrest. Starting CPR. Applying the defibrillator and delivering the first shock as soon as possible. , About Arrhythmia. Ventricular Fibrillation. Ventricular fibrillation, or VF, is considered the most serious abnormal heart rhythm. VF is extremely dangerous and can lead to sudden cardiac death. Without treatment, the condition is fatal within minutes., Synchronized cardioversion is a procedure similar to electrical defibrillation in that a transthoracic electrical current is applied to the anterior chest to terminate a life-threatening or unstable tachycardic arrhythmia. Unlike defibrillation, which is used in cardiac arrest patients, synchronized cardioversion is performed on patients that still have a …, This 2018 American Heart Association (AHA) focused update on the advanced cardiovascular life support (ACLS) guidelines for cardiopulmonary resuscitation (CPR) and emergency cardiovascular care (ECC) is based on the systematic review of antiarrhythmic therapy and the resulting “2018 International Consensus on CPR and …, Author: American Heart Association Subject: Please contact the American Heart Association at [email protected] or 1-214-706-1886 to request a long description of this image. , Background: American Heart Association Advanced Cardiac Life Support (ACLS) guidelines support the use of either amiodarone or lidocaine for cardiac arrest caused by ventricular tachycardia or ventricular fibrillation (VT/VF) based on studies of out-of-hospital cardiac arrest. Studies comparing amiodarone and lidocaine in adult populations with in-hospital …, Iran doesn't need nukes to be dangerous. The only reason to watch Binyamin Netanyahu speak to the US Congress today is for the mildly amusing spectacle of a room full of American p..., About 20% of such patients have a first recorded rhythm that is shockable by a defibrillator (i.e., ventricular fibrillation [VF] or pulseless ventricular tachycardia). ... Buist M.D. Treatment of comatose survivors of out-of-hospital cardiac arrest with induced hypothermia. N Engl J Med. 2002; 346:557–563. [Google Scholar] 21., The vasopressor that is used for the treatment within the right branch of the Cardiac Arrest Algorithm is epinephrine. Epinephrine is primarily used for its vasoconstrictive effects. Vasoconstriction is important during CPR because it will help increase blood flow to the brain and heart. , Indications for ACLS Vasoconstriction effects : epinephrine binds directly to alpha-1 adrenergic receptors of the blood vessels (arteries and veins) causing direct vasoconstriction, thus, improving perfusion pressure to the brain and heart., Request an appointment. On this page. Diagnosis. Treatment. Self care. Coping and support. Diagnosis. Ventricular fibrillation is always diagnosed in an …, Go to: VF is often linked to underlying structural heart disease. Three percent to 12% of cases of myocardial infarction (MI) develop VF during the acute phase. MI patients with complete coronary …, Summary. Ventricular fibrillation, or VFib or VF, is a dangerous arrhythmia that causes the heart's lower chambers (ventricles) to erratically quiver instead of pumping blood as they should. VFib results in sudden cardiac arrest and requires emergent defibrillation (electric shock) to restore the heart's normal rhythm., Nov 22, 2016 ... ACLS Adult Cardiac Arrest Algorithm - Ventricular Fibrillation ; ACLS Adult Cardiac Arrest Algorithm - PEA/Asystole. ACLS Certification Institute ..., Adenosine has been used in the emergency treatment of arrhythmia for more than nine decades. However, cardiologists are often unfamiliar about its basic mechanism and various diagnostic and therapeutic uses, considering it mainly as a therapeutic drug for supraventricular tachycardia. This article discusses the role of adenosine relevant to ..., To make things easier, we’ve compiled a quick ACLS review with an updated list of the top 7 ACLS algorithms you need to know so you can begin familiarizing yourself. The algorithms in this ACLS-made-easy guide are as follows: Adult Cardiac Arrest Algorithm. Cardiac Arrest Circular Algorithm. Suspected Stroke Algorithm., Monomorphic ventricular tachycardia will have QRS complexes greater than or equal to .12 second (120 milliseconds). These QRS complexes appear uniform and symmetrical. This suggests that the impulses and/or circuitry of the heart is causing complexes to originate in the same area of the ventricle. Polymorphic Ventricular Tachycardia., https://www.proacls.com - ACLS Certification Training Videos**Get $20 off your certification or recertification with the discount code youtubeacls2017The key..., Amiodarone is a frequently prescribed anti-arrhythmic medication. Amiodarone is approved by the U.S. Food and Drug Administration (FDA) specifically for the treatment of life-threatening ventricular arrhythmias. However, this drug is also widely used off-label to treat supraventricular tachyarrhythmias, such as atrial fibrillation, and …, Overview. Electrocardiogram from a patient with ventricular fibrillation. What is ventricular fibrillation? Ventricular fibrillation (sometimes called v-fib for short) is …, METHODS. A comprehensive literature search was conducted from May 12, 2022, to November 3, 2022, encompassing studies, reviews, and other evidence conducted on human subjects that were published in English from PubMed, EMBASE, the Cochrane Library, the Agency for Healthcare Research and Quality, and other selected databases relevant to this guideline., Nov 22, 2016 ... ACLS Adult Cardiac Arrest Algorithm - Ventricular Fibrillation ; ACLS Adult Cardiac Arrest Algorithm - PEA/Asystole. ACLS Certification Institute ..., Version 2021.01.c. When a child is in cardiac arrest begin CPR immediately. Push hard and fast at 100–120 beats per minute. Ventilate with a bag-mask and attach to supplemental oxygen. Two-person CPR for a child without a definitive airway will be at a ratio of 15 compressions to 2 breaths. Attach the monitor/defibrillator as soon as possible ..., A = Open airway. B = Breaths (30:2 compression-to-ventilation ratio or 8-10 breaths/min with advanced airway). 1. Use defibrillator to check rhythm: If VF/VT: Give 1 shock immediately then follow the algorithm. If PEA or asystole: Continue CPR, give epinephrine as soon as possible and follow the algorithm. Minimize interruptions of CPR., Jeff Bezos, the founder and CEO of Amazon and owner of the Washington Post, is the worlds richest man. His employees average $78,000 a year. By clicking "TRY IT", I agree to receiv..., Narrow irregular: 120-200 J biphasic or 200 J monophasic; i.e., atrial fibrillation; Wide regular: 100 J; i.e., monomorphic VT; Wide irregular: defibrillation dose (not synchronized) Stable Tachycardia. Patients with stable tachycardia are treated based upon whether they have a narrow or wide QRS complex. The following flow diagram shows the ... , In ACLS, Lidocaine is used intravenously for the treatment of ventricular arrhythmias. (VT/VF) It is also useful for the treatment of stable monomorphic VT with preserved ventricular function and for stable polymorphic VT with preserved left ventricular function, normal QT interval, and correction of any electrolyte imbalances., Amiodarone is a frequently prescribed anti-arrhythmic medication. Amiodarone is approved by the U.S. Food and Drug Administration (FDA) specifically for the treatment of life-threatening ventricular arrhythmias. However, this drug is also widely used off-label to treat supraventricular tachyarrhythmias, such as atrial fibrillation, and …, Pulseless ventricular tachycardia is a medical emergency. Due to rapid ventricular contractions, the ventricular filling decreases markedly, leading to a dramatic decrease in cardiac output. As a result, a pulse is absent. Electrophysiology identifying factors for pulseless ventricular tachycardia include; tachycardia (>100 bpm), wide …, Advanced cardiac life support (ACLS) in adults - UpToDate. View in. Author: Jonathan Elmer, MD, MS, FNCS. Section Editors: Ron M Walls, MD, FRCPC, FAAEM. Richard L Page, MD. Deputy Editor: Jonathan Grayzel, MD, FAAEM. Literature review current through: Apr 2024. This topic last updated: Mar 28, 2024. INTRODUCTION., Part 10.4: Hypothermia. Unintentional hypothermia is a serious and preventable health problem. Severe hypothermia (body temperature <30°C [86°F]) is associated with marked depression of critical body functions that may make the victim appear clinically dead during the initial assessment. But in some cases hypothermia may exert a protective ... , Synchronized cardioversion is a procedure similar to electrical defibrillation in that a transthoracic electrical current is applied to the anterior chest to terminate a life-threatening or unstable tachycardic arrhythmia. Unlike defibrillation, which is used in cardiac arrest patients, synchronized cardioversion is performed on patients that still have a …, Reviewed/Revised Jan 2023. Ventricular fibrillation is a potentially fatal, uncoordinated series of very rapid, ineffective contractions of the ventricles (lower chambers of the heart) caused by many chaotic electrical impulses. Ventricular fibrillation causes unconsciousness in seconds, and if the disorder is not rapidly treated, death follows.