Vfib treatment acls

Ventricular fibrillation (VFib or VF) and ventricular tachycardia (v-tach or VT) are two types of heart arrhythmia that occur in the heart’s lower chambers called the ventricles. The ventricles ...

Vfib treatment acls. Arrhythmias originating from the ventricular myocardium or His-Purkinje system are grouped under ventricular arrhythmia (VA). This includes a subset of arrhythmias such as ventricular tachycardia (VT), ventricular fibrillation (VF), premature ventricular contractions (PVC), and ventricular flutter. Wide complex tachycardia (WCT) …

Sustained ventricular tachycardia, 3rd degree heart block. Treatment. Immediately initiate ACLS. Emergency electrical defibrillation (200 > 300 > 360J) the earlier that defibrillation is performed, the better. Prognosis, Prevention, and Complications. Most cases result in sudden death. Immediate intervention necessary for survival in vast ...

S5.1.5.2-26 For this reason, chronic treatment of young patients with amiodarone should be reserved as a bridge to more definitive treatment options such as catheter ablation. Baseline evaluation of patients may include ECG, liver function tests, thyroid function tests, chest x-ray, and pulmonary function tests (including diffusing capacity of ... 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. …PALS Cardiac Arrest Algorithm 1. Activate emergency medical services, call a pediatric “code blue”, obtain AED or defibrillator 2. Is the rhythm shockable? Rhythm IS shockable (ventricular fibrillation or unstable ventricular tachycardia) 1. Administer shock at 2 Joules/kg 2. Administer high-quality CPR for 2 minutes 3. Check rhythm If not shockable, move to …Treatment of hypocalcemia requires administration of calcium. Treat acute, symptomatic hypocalcemia with 10% calcium gluconate, 90 to 180 mg of elemental calcium IV over 10 minutes. Follow this with an IV drip of 540 to 720 mg of elemental calcium in 500 to 1000 mL D 5 W at 0.5 to 2.0 mg/kg per hour (10 to 15 mg/kg). Measure serum calcium …Heart attacks occur when there is a lack of blood supply to the heart. Symptoms include: chest pain, pressure, or tightness. pain that may spread to arms, neck, jaw, or back. nausea and vomiting ...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.What is ventricular fibrillation? Ventricular fibrillation (V-fib) is a dangerous type of arrhythmia, or irregular heartbeat. It affects your heart’s ventricles. Your heart is a muscle system that contains 4 chambers. The 2 bottom chambers are the ventricles. In a healthy heart, your blood pumps evenly in and out of these chambers.

2. Routine administration of calcium for treatment of cardiac arrest is not recommended. 3. Use of extracorporeal cardiopulmonary resuscita-tion for patients with cardiac arrest refractory to standard advanced cardiovascular life support is reasonable in select patients when provided within an appropriately trained and equipped system of care. 4.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.The American Heart Association’s ACLS precourse self-assessment is a test students take before beginning a course in advanced cardiovascular life support, as the association’s webs...In patients with AF, treatment of hypertension should aim for current BP guidelines to reduce stroke, bleeding, and other adverse outcomes. 5,10 An RCT of patients with paroxysmal AF and hypertension noted fewer recurrences among participants treated with renal denervation and pulmonary vein isolation (PVI) compared with PVI alone. 2 …This 2019 focused update to the American Heart Association advanced cardiovascular life support (ACLS) guidelines for cardiopulmonary resuscitation (CPR) and emergency cardiovascular care is based on the evidence identified in systematic reviews and the resulting “2019 International Consensus on Cardiopulmonary Resuscitation and …Asystole is not a shockable rhythm. So, treatment will involve high-quality CPR, airway management, IV or IO therapy, and medication therapy – specifically 1mg of epinephrine 1:10,000 concentration every 3 to 5 minutes via rapid IV or IO push. Asystole Treatment Steps. ACLS providers perform their initial assessment, which involves the following:

If a pulse cannot be felt after palpating for up to 10 seconds, move immediately to the ACLS Cardiac Arrest VTach and VFib Algorithm to provide treatment for pulseless ventricular tachycardia. The immediate response to an adult patient with tachycardia and a palpable pulse is. To maintain an open airway; Assist breathing if necessaryStructural heart disease confers a substantial risk of ventricular arrhythmias and a significant risk of proarrhythmic effects of antiarrhythmic drugs. While several antiarrhythmic drug classes are available for emergency treatment of VT/VF in these patients, long-term treatment is limited mostly to amiodarone, beta-blockers or sotalol. In ...Setting Up Theory: It is suggested that the first shock lowers the defibrillation threshold, thus increasing the second shock’s success in converting any remaining fibrillating myocytes. 8,18 This is where DD gets its alternate name of “Double Sequential Defibrillation (DSD)”. It is also the more likely method of administration in ...Approximately 300,000 out-of-hospital cardiac arrests (OHCA) occur annually in the United States, with survival around 8%. 10 The initial rhythm may be ventricular fibrillation (VF), pulseless ventricular tachycardia (VT), asystole, or pulseless electrical activity (PEA). 16 Two-thirds of OHCA has an initial non-shockable rhythm of PEA or asystole with an increasing incidence compared with ...Consequently, the international ACLS recommendations present the science-based clinical guidelines and some educational material for these periarrest conditions: Acute coronary syndromes. Acute pulmonary edema, hypotension, and shock. Symptomatic bradycardias. Stable and unstable tachycardias. Acute ischemic stroke

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In one recent case series on 12 patients in refractory VF ( Cortez 2016 ), double sequential defibrillation resulted in ROSC in 3 patients (25%, 95% CI 9% to 53%), all of whom survived to hospital discharge. Two of these patients had good neurologic outcomes at discharge (CPC scores of 1 and 2) while the third had a CPC score of 3.Sustained ventricular tachycardia, 3rd degree heart block. Treatment. Immediately initiate ACLS. Emergency electrical defibrillation (200 > 300 > 360J) the earlier that defibrillation is performed, the better. Prognosis, Prevention, and Complications. Most cases result in sudden death. Immediate intervention necessary for survival in vast ...Defibrillation a powerful tool in the hands of the ACLS practitioner and it is important to know when to use defibrillation to reset the abnormal rhythm. Determining the underlying cause of an arrest is the most important goal in ACLS, and defibrillation can reset and restart the heart, buying the practitioner time to explore and treat the Hs ...Treatment. For the purposes of ACLS, atrial flutter is treated the same as atrial fibrillation. When atrial flutter produces hemodynamic instability and serious signs and symptoms, it is treated using ACLS protocol. For the patient with unstable tachycardia due to this tachyarrhythmia (atrial flutter), immediate cardioversion is recommended.

PALS Tachycardia Initial Management Algorithm 1. Tachycardia is diagnosed by manual testing or heart rate monitor– Normal heart rates vary with age/size. Age Category Age Range Normal Heart Rate Newborn 0-3 months 80-205 per minute Infant/Young child 4 months to 2 years 75-190 per minute Child/School Age 2-10 years 60-140 per minute …Nov 1, 2020 ... ... treatments, and recommend the next steps to properly provide optimal care for the patient. Rationales are included with the correct answers ...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 …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...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.Epinephrine hydrochloride produces beneficial effects in patients during cardiac arrest, primarily because of its α-adrenergic receptor–stimulating properties. 1 The adrenergic effects of epinephrine increase myocardial and cerebral blood flow during CPR. 2 The value and safety of the β-adrenergic effects of epinephrine are controversial ...Treat patients in whom thrombus is identified by TEE with oral anticoagulation (INR 2 to 3) for at least 3 to 4 weeks before and after restoration of sinus rhythm. (Level of Evidence: B) Class IIb. Cardioversion without TEE guidance during the first 48 h after the onset of AF. VFib can either be fine or coarse. Coarse VFib is more likely to convert after defibrillation than fine VFib. Fine VFib can sometimes be mistaken for asystole. However, the treatments for asystole and VFib are different, therefore, ACLS providers must be able to differentiate between the two. When in doubt, though, it is acceptable to deliver a ... 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 ...

The "H's and T's" is a mnemonic device which will help you to recall the factors that contribute to pulseless arrest, include Pulseless Electrical Activity (PEA), Asystole (flatline), Ventricular Fibrillation (VFib or VF), and Ventricular Tachycardia (VTach or VT). These factors are primarily associated with PEA, but having a working knowledge ...

Pulseless ventricular tachycardia (VT) and Ventricular fibrillation (VF) are life-threatening cardiac rhythms that result in ineffective ventricular contractions. The ventricular motion of VF is not synchronized with atrial contractions. VT or VTach (Figure 25) is a condition in which the ventricles contract more than 100 times per minute. Evaluate and treat rapidly reversible etiologies Involve expert consultation for continued management Awake Other critical care management Follows commands? ... ACLS Healthcare Provider Post–Cardiac Arrest Care Algorithm Continued Management and Additional Emergent Activities No Yes. Author: American Heart AssociationMonomorphic 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.Knowing the H’s and T’s of ACLS will help prepare you for any ACLS scenario. Learn about this easy-to-remember strategy used in ACLS training. ... Also, a widening of the QRS-wave may be seen. This can be treated in a number of ways which include sodium bicarbonate (IV), glucose+insulin, calcium chloride (IV), Kayexalate, dialysis, and ...The goal of emergency treatment is to restore blood flow as quickly as possible to prevent organ and brain damage. Emergency treatment for ventricular …Arrhythmia Recognition. Interpret all ECG and rhythm information within the context of total patient assessment. Inaccurate diagnoses and inappropriate therapy occur when ACLS providers base their decisions solely on cardiac rhythm and neglect to evaluate the patient’s clinical signs, such as ventilation, oxygenation, heart rate, blood pressure, level of consciousness, and other signs of ...For Bradycardia: Adult ACLS: Start an infusion with a dose of 2-10 mcg/min IV/IO titrating to the patient’s response. Pediatric PALS: Give Epinephrine in a 1:10,000 solution: 0.01 mg/kg by IV/IO every 3 to 5 minutes (or give Epinephrine in a 1:1,000 solution: 0.1 mg/kg by ETT).A retrospective study compared standard and nonstandard approaches in ACLS for treating VFib. The standard ACLS protocol involves immediate defibrillation, while nonstandard approaches incorporate intubation or drug therapy before defibrillation. The study revealed significantly higher long-term survival rates with standard ACLS …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. Disordered electrical activity causes the heart’s lower chambers (ventricles) to quiver instead of ...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 Treatment Recommendations” (CoSTR) from the Advanced ...

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Double sequential external defibrillation (DSED; rapid sequential shocks from two defibrillators) and vector-change (VC) defibrillation (switching defibrillation pads to an …BLS, ACLS, & PALS Algorithms. Algorithms help providers to be prepared to respond to life-threatening medical events in a systematic fashion. These algorithms provide a step-by-step process for responding to various emergency situations. By learning and mastering these algorithms, you will be better prepared to face these challenges in the ...Without immediate treatment, ventricular fibrillation can cause death within minutes. The condition's rapid, erratic heartbeats cause the heart to abruptly stop pumping blood to the body. Blood pressure drops suddenly and significantly. The longer the body lacks blood, the greater the risk of damage to the brain and other organs.Systems of Care for Improving Post–Cardiac Arrest Outcomes. Post–cardiac arrest care is a critical component of advanced life support ().Most deaths occur during the first 24 hours after cardiac arrest. 5,6 The best hospital care for patients with ROSC after cardiac arrest is not completely known, but there is increasing interest in identifying and optimizing …In patients with AF, treatment of hypertension should aim for current BP guidelines to reduce stroke, bleeding, and other adverse outcomes. 5,10 An RCT of patients with paroxysmal AF and hypertension noted fewer recurrences among participants treated with renal denervation and pulmonary vein isolation (PVI) compared with PVI alone. 2 …Temu's teams in Boston and Dublin mostly perform functions in tax, marketing and legal matters. Temu, a fast-growing e-commerce platform known for cheap deals, is making inroads in...Pulseless ventricular tachycardia (VT) and Ventricular fibrillation (VF) are life-threatening cardiac rhythms that result in ineffective ventricular contractions. The ventricular motion of VF is not synchronized with atrial contractions. VT or VTach (Figure 25) is a condition in which the ventricles contract more than 100 times per minute.ACLS indicates advanced cardiovascular life support; and CPR, cardiopulmonary resuscitation. PDF Download Accessible Text Version (PDF) Figure 7. ….

If a pulse cannot be felt after palpating for up to 10 seconds, move immediately to the ACLS Cardiac Arrest VTach and VFib Algorithm to provide treatment for pulseless ventricular tachycardia. The immediate response to an adult patient with tachycardia and a palpable pulse is. To maintain an open airway; Assist breathing if necessary BLS, ACLS, & PALS Algorithms. Algorithms help providers to be prepared to respond to life-threatening medical events in a systematic fashion. These algorithms provide a step-by-step process for responding to various emergency situations. By learning and mastering these algorithms, you will be better prepared to face these challenges in the ...2020 American Heart Association. Megacode 2—Out-of-Hospital Unstable Bradycardia (Unstable Bradycardia > VF > Asystole > PCAC) Lead-in: You are called to a restaurant for a man who suddenly became unresponsive, vomited, and then stopped breathing. You have a 4-minute response to the scene in your ALS ambulance.Freese JP, Jorgenson DB, Liu PY, et al. Waveform analysis-guided treatment versus a standard shock-first protocol for the treatment of out-of-hospital cardiac arrest presenting in ventricular fibrillation: results of an international randomized, controlled trial. Circulation. 2013 Aug 27. 128(9):995-1002. [QxMD MEDLINE Link]. .Defibrillation. This treatment is also called cardioversion. An automated external defibrillator (AED) delivers shocks through the chest wall to the heart. It ... 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. PALS Tachycardia Initial Management Algorithm 1. Tachycardia is diagnosed by manual testing or heart rate monitor– Normal heart rates vary with age/size. Age Category Age Range Normal Heart Rate Newborn 0-3 months 80-205 per minute Infant/Young child 4 months to 2 years 75-190 per minute Child/School Age 2-10 years 60-140 per minute …ACLS is an acronym that stands for Advanced Cardiac Life support. ACLS teaches healthcare professionals advanced interventional protocols and algorithms for the treatment of cardiopulmonary emergencies. These include primary survey, secondary survey, advanced airways, myocardial infarction, cardiac arrest, tachycardias, bradycardias, and stroke.Basic treatment of torsade: ⚡️; Treatment of torsade storm: ⚡️; The following treatment strategy is for monomorphic VT, or polymorphic VT due to acute myocardial ischemia. The treatment of these entities is very similar, although there is a greater urgency to pursue revascularization in the context of polymorphic VT due to acute ischemia. Vfib treatment acls, Atrial Fibrillation (AFib) rhythm video by the ACLS Certification Institute. To view more videos, check out the ACLS Certification Institute at http://www.ac..., Ventricular fibrillation (VFib or VF) and ventricular tachycardia (v-tach or VT) are two types of heart arrhythmia that occur in the heart’s lower chambers called the ventricles. The ventricles ..., What is ventricular fibrillation? Ventricular fibrillation (V-fib) is a dangerous type of arrhythmia, or irregular heartbeat. It affects your heart’s ventricles. Your heart is a muscle system that contains 4 chambers. The 2 bottom chambers are the ventricles. In a healthy heart, your blood pumps evenly in and out of these chambers., e272 September 25, 2018 Circulation. 2018;138:e272–e391. DOI: 10.1161/CIR.0000000000000549 Key Words: AHA Scientific Statements acute coronary syndrome ambulatory ECG monitoring antiarrhythmic drug …, Oct 31, 2022 ... Ventricular fibrillation (V-fib) ECG interpretation, causes, treatment, nursing NCLEX and ACLS review., Q: If you give precordial thump, is it given just once?. A: Yes, the precordial thump is attempted only one time. it is effective only if used near the onset of VF or pulseless VT, and so should be used only when the arrest is witnessed or monitored and only at the outset. .About 25% of patients in cardiac arrest who received a thump on the precordium …, Pulseless ventricular tachycardia is a serious condition with high mortality and morbidity that requires prompt diagnosis and treatment. This activity reviews the etiology, evaluation, and management of …, S5.1.5.2-26 For this reason, chronic treatment of young patients with amiodarone should be reserved as a bridge to more definitive treatment options such as catheter ablation. Baseline evaluation of patients may include ECG, liver function tests, thyroid function tests, chest x-ray, and pulmonary function tests (including diffusing capacity of ..., Current advanced cardiac life support (ACLS) guidelines for the management of ventricular fibrillation (VF) and pulseless ventricular tachycardia is defibrillation. However, refractory VF, which is defined as VF that persists despite three defibrillation attempts, is challenging for all ACLS provide …, 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., Pulseless electrical activity (PEA) is defined as the presence of cardiac electrical activity with organized or partially organized cardiac rhythms without a palpable pulse. Pulseless electrical activity is formerly known as electromechanical dissociation (EMD). During PEA, the heart is unable to move adequate blood volume to maintain systemic ..., AIM The “2023 ACC/AHA/ACCP/HRS Guideline for the Diagnosis and Management of Atrial Fibrillation” provides recommendations to guide clinicians in the …, When it comes to treating patients experiencing cardiac emergencies, the American Heart Association (AHA) has set the standard with their Advanced Cardiovascular Life Support (ACLS..., Among EMS-treated out-of-hospital cardiac arrest patients, about 21% had shockable rhythms of ventricular fibrillation/pulseless ventricular tachycardia (VF/pVT). Survival to hospital discharge after EMS-treated cardiac arrest was about 11.4%, while this rate was 37.4% for bystander-witnessed VF cardiac arrest in patients of all ages ( 1 , 2 )., Freese JP, Jorgenson DB, Liu PY, et al. Waveform analysis-guided treatment versus a standard shock-first protocol for the treatment of out-of-hospital cardiac arrest presenting in ventricular fibrillation: results of an international randomized, controlled trial. Circulation. 2013 Aug 27. 128(9):995-1002. [QxMD MEDLINE Link]. ., Rhythm-Based Management. There are four possible electrocardiographic rhythms in cardiac arrest: ventricular fibrillation (VF), pulseless ventricular tachycardia (VT), pulseless electrical activity (PEA), and asystole. VF is a disorganized electrical activity, while a pulseless VT produces an organized electrical activity., TPG reader Drew is renovating his condo and is looking for the best credit card for furniture and household purchases. Update: Some offers mentioned below are no longer available. ..., 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 …, During the first few months of 2023, you can get a good deal on flights to St. Thomas or St. Croix in the U.S. Virgin Islands. It’s not always easy to find great flight deals to th..., 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 to …, 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., Given the difficulty in converting RVF to a perfusing rhythm, here are a few strategies beyond the standard therapy to add to your toolbox. Refractory ventricular fibrillation (RVF) is a life-threatening cardiac arrhythmia unresponsive to traditional methods of defibrillation and advanced cardiovascular life support (ACLS). RFV has been defined …, There are two stages of treatment for V-fib: the first is focused on restoring the person’s pulse and blood pressure. The second stage focuses on reducing a person’s chances of developing ventricular fibrillation in the future. Stage one treatments for ventricular fibrillation include: Automated emergency defibrillator (AED), if used ..., Feb 24, 2014 · Arrhythmia Recognition. Interpret all ECG and rhythm information within the context of total patient assessment. Inaccurate diagnoses and inappropriate therapy occur when ACLS providers base their decisions solely on cardiac rhythm and neglect to evaluate the patient’s clinical signs, such as ventilation, oxygenation, heart rate, blood pressure, level of consciousness, and other signs of ... , However, it is unclear whether these medications improve patient outcomes. The 2018 AHA Focused Update on ACLS guidelines summarize the most recent published evidence for and recommendations on the use of antiarrhythmic drugs during and immediately after shock-refractory VF/pVT cardiac arrest. The updated guidelines state that amiodarone or ..., Trump administration taps former GlaxoSmithKline exec as head of vaccine task force, and how I'm playing Walmart and Datadog....AMZN All alone. Walking along a quiet beach. Adm..., However, it is unclear whether these medications improve patient outcomes. The 2018 AHA Focused Update on ACLS guidelines summarize the most recent published evidence for and recommendations on the use of antiarrhythmic drugs during and immediately after shock-refractory VF/pVT cardiac arrest. The updated guidelines state …, Starting June 1, Malta will be one of the few European countries opening its doors to fully vaccinated travelers. Update: Some offers mentioned below are no longer available. View ..., VF is the most common mechanism of sudden cardiac arrest and can also quickly develop into asystole (flatline), and death, it requires immediate treatment. The treatment process will focus on terminating the VF and restoring movement of blood toward vital organs and a return of spontaneous circulation (ROSC). Identification, ACLS Algorithms answers are found in the Pocket ICU Management powered by Unbound Medicine. Available for iPhone, iPad, Android, and Web. ... Vfib or pulseless Vtach . Shock . Shock energy Monophasic 360 J; Shock energy Biphasic 120 J (rectilinear) or 150 J (truncated), escalate to 200 J (200 J if unknown wave) ..., Sustained ventricular tachycardia, 3rd degree heart block. Treatment. Immediately initiate ACLS. Emergency electrical defibrillation (200 > 300 > 360J) the earlier that defibrillation is performed, the better. Prognosis, Prevention, and Complications. Most cases result in sudden death. Immediate intervention necessary for survival in vast ..., The reduction in cardiac output resulting can cause symptoms ranging from decreased level of consciousness to a total lack of cardiac output, known as a pulseless ventricular tachycardia. Unstable ventricular tachycardia may present with the following characteristics: Broad QRS arrhythmia. Highly accelerated heart rates., The headline figure for US gross domestic product in the second quarter was a better than expected, clocking in at 1.7%, according to the first of three estimates. But the first-qu...