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ventricular fibrillation

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13y ago

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What is the most frequent initial rhythm witnessed in sudden cardiac arrest?

The most common abnormal heart rhythm preceding cardiac arrest is ventricular fibrillation. In this dysrhythmia, the ventricular walls contract randomly and rapidly, and do not effectively pump blood.


What does a defibrilator do?

It produces an electrical impulse used to restart the hearts' rhythm after a cardiac arrest.


What are the benefits of having a defibrillator implant?

An implanted defibrillator has both risks and benefits to the patient. The implant is used for those who are at risk for cardiac arrest, and in the event of a cardiac arrest, the defibrillator implant could save the patients life by maintaining a steady cardiac rhythm.


Why can't you shock asystole during cardiac arrest?

During asystole, the heart is not producing any electrical activity, so there is no rhythm to shock. Shocking asystole during cardiac arrest is ineffective because there is no underlying rhythm to restore. Instead, CPR and medications are used to try to restart the heart.


What is the most common pre-arrest rhythm in children?

The most common pre-arrest rhythm in children is bradycardia, often associated with respiratory issues or hypoxia. This can occur due to various factors, including respiratory distress or shock. Addressing the underlying cause promptly is crucial, as bradycardia can progress to more severe arrhythmias or cardiac arrest if not treated. Early intervention can significantly improve outcomes in pediatric emergencies.


WHAT IS THE LINK IN CARDIAC CHAIN OF SURVIVAL?

The Cardiac Chain of Survival is a series of critical actions that, when performed in sequence, can significantly improve the chances of survival following a cardiac arrest. The key links include early recognition and activation of emergency medical services, early CPR to maintain blood flow, early defibrillation to restore a normal heart rhythm, and post-cardiac arrest care to stabilize the patient. Each link is essential and enhances the overall effectiveness of resuscitation efforts.


In cardiac arrest the AED defibrlillates over time?

If it is a shockable rhythm, the AED will analyze and defibrillate as needed. Continue CPR when not analyzing and/or shocking.


When the cardiac rhythm is ventricular fibrillation the muscle cells are still contracting but there is?

When the cardiac rhythm is ventricular fibrillation, the muscle cells are contracting in a chaotic and uncoordinated manner, leading to ineffective pumping of blood. This results in the heart being unable to maintain a proper rhythm, causing a critical loss of blood flow to vital organs. Consequently, it can lead to cardiac arrest if not treated promptly.


Why don't you shock asystole during cardiac arrest?

During cardiac arrest, asystole is a state of no electrical activity in the heart. Shocking asystole is not effective because there is no organized electrical activity to reset. Instead, CPR and medications are used to try to restore a normal heart rhythm.


Who should not receive defibrillation?

Defibrillation should not be performed on a patient who has a pulse or is alert, as this could cause a lethal heart rhythm disturbance or cardiac arrest.


What happens in hospital when someone arrests?

A cardiac arrest team will be called in, and the staff will start CPR immediately, they will use a BVM and Defib (if necessary) to attempt to resus the patient the cardiac arrest team will then move in and perform ALS on the patient. Usually the patient will go into respiratory arrest and then cardiac arrest, their heart rhythm will normally go from normal synas rhythm into VF (Ventiricualr Fibrillation) where a shock will be nececerry to stop the heart, and shock it back into normal rhythem. If the patient receives early CPR and early Defib they have a fairly good chance of surviving if they go into VF. Hope this helps.


For which cardiac rhythm and other problems is CPR required?

The two most common heart rhythms that require CPR is ventricular tachycardia and ventricular fibrillation. Ventricular tachycardia is an extremely rapid cardiac rhythm and ventricular fibrillation is an abnormal cardiac rhythm. For an adult, if the person is unconscious and not breathing, CPR is required. There are numerous reasons an adult would be unconscious and not breathing; all require CPR.