FREE ACLS Pulseless Question and Answers
How much does the chance of survival from an observed VF sudden cardiac arrest drop for each minute that goes between collapse and defibrillation if no bystander CPR is given?
Explanation:
If no bystander CPR is given during a witnessed VF sudden cardiac arrest, the chance of survival decreases by 7% to 10% for every minute that occurs between collapse and defibrillation. The drop is more gradual and averages 3% to 4% each minute when bystanders provide CPR. At most defibrillation intervals, CPR performed early can double or triple survival after abrupt cardiac arrest.
Pulse checks ought to:
Explanation:
Only if an orderly rhythm is evident, and preferably during rhythm analysis, should you examine your pulse.
When performing resuscitation, epinephrine is used:
Explanation:
During resuscitation, epinephrine hydrochloride is primarily used for its beta-adrenergic effects, or vasoconstriction.
What is the first-line antiarrhythmic medication administered in cardiac arrest?
Explanation:
Since amiodarone increases the risk of ROSC and hospital admission in people with refractory VF/pulseless VT, it is the first antiarrhythmic drug administered in cardiac arrest.
VF may be stopped by the initial shock, however if the arrhythmia returns later on during resuscitation:
Explanation:
Deliver successive shocks at the previously successful energy level if the initial shock ends VF but the arrhythmia reappears later in the resuscitation effort.
Which of the ensuing statements is untrue?
Explanation:
The therapies listed in the algorithm are not the only options for treating PEA. If an underlying reason is present, healthcare professionals should make an effort to find it and address it. For resuscitative measures to be effective, reversible causes must be identified and treated.
Routine insertion of an advanced airway in asystole:
Explanation:
If bag-mask breathing is sufficient, healthcare professionals may postpone inserting an advanced airway.
If a biphasic defibrillator is being used and the dosage is unknown:
Explanation:
If you don't know the biphasic defibrillator's effective dose range, give the initial and all subsequent shocks at its maximum energy level.
Which of the ensuing assertions is accurate?
Explanation:
No proof exists that trying to "defibrillate" asystole is helpful. In one study, the shock-receiving group tended to have inferior results. A preliminary effort at defibrillation may be necessary if it is unclear if the rhythm is fine VF or asystole.
Which of the following does not constitute a justification for ceasing or delaying resuscitative measures?
Explanation:
A single instant cannot possibly be used to decide when to end resuscitative measures.
The ideal chest compression fraction is:
Explanation:
The percentage of time that chest compressions are applied during cardiac arrest resuscitation is known as the chest compression fraction. CCF should be as high as feasible, ideally above 80%, with a minimum of 60%.
The correct epinephrine dose for VF/pVT is:
Explanation:
1 mg IV/IO should be administered every 3 to 5 minutes.
A definition of pulseless electrical activity is:
Explanation:
PEA is a term used to describe any structured rhythm without a pulse. A structured rhythm is made up of QRS complexes that look the same from beat to beat (ie, each has a uniform QRS configuration). Organized rhythms can have little or large QRS complexes, occur at quick or slow rates, be regular or erratic, and create a pulse or not.
The heart is restarted through defibrillation.
Explanation:
The heart is not restarted during defibrillation. Defibrillation temporarily stops all electrical activity in the heart, including VF and pVT, and temporarily stuns it. The heart's normal pacemakers may eventually resume electrical activity, which eventually results in a perfusing beat, if the heart is still functional.
The two most frequent causes for pulseless electrical activity are what?
Explanation:
The two most frequent underlying and potentially curable causes of PEA are hypovolemia and hypoxia. As you evaluate the patient, be sure to check for signs of these issues.
VF and Pulseless VT are shockable rhythms
Explanation:
Shockable rhythms are represented by VF and Pulseless VT. The Adult Cardiac Arrest Algorithm's left side should be followed when treating.