What is a reperfusion arrhythmia?
Reperfusion arrhythmias originate as a consequence of the complex of cellular and humoral reactions accompanying the opening of coronary artery. As the primary cause of their generation are considered the chemically defined substances that are produced and accumulated in myocardium during reperfusion.
What rhythm is common after reperfusion?
In humans, the most common reperfusion arrhythmia is an accelerated idioventricular rhythm. However, ventricular tachycardia and ventricular fibrillation remain the most important causes of sudden death following spontaneous restoration of antegrade flow.
What is the first line antiarrhythmic for ventricular tachycardia with a pulse?
Amiodarone is the first-line antiarrhythmic during cardiac arrest, as it has been shown to improve return to circulation. Two observational studies have shown that magnesium can terminate torsades de pointes, it is not likely to be effective in terminating irregular or polymorphic Vtach with a normal QT interval.
What is the drug of choice for the management of sustained ventricular arrhythmia associated with acute myocardial infarction?
Amiodarone is the drug of choice for the treatment of hemodynamically unstable VT that is refractory to other antiarrhythmic agents. Prehospital studies currently suggest that amiodarone is safe and efficacious for use in out-of-hospital cardiac arrest.
Can reperfusion cause arrhythmias?
Reperfusion arrhythmias are common in patients undergoing percutaneous coronary intervention (also after thrombolysis and coronary artery bypass graft), including accelerated idioventricular rhythms, ventricular tachycardia, and ventricular fibrillation.
What should be included in reperfusion strategy?
Selecting the optimal reperfusion strategy requires customization based on patient factors including time from symptom onset to first medical contact (FMC), the amount of myocardium at risk, the presence of shock or severe heart failure, the risk of bleeding with fibrinolysis, and the time required to perform PCI ( …
How can Vtach be prevented?
Prevention. The best way to prevent ventricular tachycardia is to treat or eliminate risk factors that may lead to heart disease. If you already have heart disease, follow your treatment plan and a heart-healthy lifestyle.
When do you use amiodarone vs adenosine?
Note that amiodarone becomes the antiarrhythmic of choice (after failure of adenosine) if the patient’s cardiac function is impaired and the ejection fraction is <40% or there are signs of congestive heart failure.
What is the first line treatment for ventricular fibrillation?
Epinephrine is the first drug given and may be repeated every 3 to 5 minutes. If epinephrine is not effective, the next medication in the algorithm is amiodarone 300 mg.
Which of the following is a possible cause for ventricular fibrillation V fib?
A heart that has been damaged by a heart attack or other heart muscle damage is vulnerable to V-fib. Other causes include electrolyte abnormalities such as low potassium, certain medicines, and certain genetic diseases that affect the heart’s ion channels or electrical conduction.
How is reperfusion done?
Reperfusion therapy includes drugs and surgery. The drugs are thrombolytics and fibrinolytics used in a process called thrombolysis. Surgeries performed may be minimally-invasive endovascular procedures such as a percutaneous coronary intervention (PCI), followed by a coronary angioplasty.
