questions and answers
No pulse = - ✅✅no perfusion
What is the pulse generated by? - ✅✅Blood flow
-NOT electrical potential
Can we have electrical activity with no muscle contraction? - ✅✅Yes
-leads to no pulse
What does a cardiopulmonary arrest require? - ✅✅Cardiopulmonary resuscitation (CPR)
What does CPR do? - ✅✅Provide tissue perfusion by external chest compression
Establishment of airway and delivery of oxygen
What are the 4 types of arrest? - ✅✅Pulseless ventricular tachycardia (pVT)
Ventricular fibrillation (VFib)
Pulseless electrical activity (PEA)
Aystole
Which types of arrest are shockable (heart is moving but not moving blood)? - ✅✅pVT
VFib
Which types of arrest are not shockable? - ✅✅PEA
Asystole
Which types of arrest have a big QRS that covers up the P wave? - ✅✅pVT
, VFib
pVT - ✅✅Rapid ventricular contraction insufficient to allow adequate ventricular filling and
meaningful cardiac output
-Ventricles beat faster than atria
-Not getting blood thru
VFib - ✅✅Rapid, uncoordinated, fluttering contractions of the ventricles leading to cessation of
isolated ventricular contraction and blood flow
-Blood stands still
PEA - ✅✅Electrophysiologic state demonstrating impulse on ECG w/o resultant ventricular
contraction
Aystole - ✅✅A condition of weakening or cessation of ventricular contraction
-flat-line
VFib ECG: - ✅✅Irregular
pVT ECG: - ✅✅Organized
PEA ECG: - ✅✅
Asystole ECG: - ✅✅
What are the most common types of arrest? - ✅✅Asystole-39%
PEA-37%
What are the most common causes of an arrest? - ✅✅Arrhythmia-34%