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MED239 Chapter 9&10

QuestionAnswer
Blocked impulse Impulse occurs too soon after the receding impulse
Cardiac output parameters Observation guidelines used to assess the blood supply to the vital organs of the body
Dissociative Not related at all; the atria and the ventricles beat independently of each other
First degree AV block Delay in electrical conduction from the SA node to the AV node
Mobitz 1 Rhythm has a cyclical prolonging PR interval until the QRS is dropped.
In first degree atrioventricular (AV) block the PR interval 0.20 seconds
Dissociative the atria and the ventricles beat entirely independently of each other
most accurately describes the difference between LBBB and RBBB when viewing lead V1 The QRS is negative for LBBB and positive for RBBB.
1st step for ventricular conduction with a right bundle branch block. The Septum is depolarized normally
2nd step for ventricular conduction with a right bundle branch block. The Left ventricle is activated
3rd step for ventricular conduction with a right bundle branch block. The current travels to the right ventricle
Bundle branch blocks occur when one or both of the ventricular pathways are damaged or delayed due to cardiac disease, drugs, or other conditions.
The view referred to when differentiating left from right BBB is V1
BBB Bundle branch block
Pre-syncope Feel like they may faint
Syncope Fainting
presence of bundle branch block in V1 evidence of P waves and QRS complexes that measure 0.12 second or more
QRS is positive and has a “bunny ears” appearance Right Bundle Branch Block
QRS is negative Left Bundle Branch Block
The absence of breathing Apnea
When every other complex is a PVC Bigeminy
Two PVCs that occur back to back Coupling
An emergency medication tray or cart with equipment that can be easily transported Crash cart
When every fourth complex is a PVC Quadgeminy
Early complex but has a similar shape, suggesting only one irritable focus present Unifocal PVC
The absence of ventricular activity and depolarization Asystole
A type of ventricular tachycardia in which depolarization impulses move from one ventricle to the other Torsades de Pointes
When every third complex is a PVC Trigeminy
ventricular pacemaker cells are located Purkinje fibers
increases excitability (irritability) of the ventricular myocardium Ischemia
idioventricular rhythms occur When the sinoatrial and junctional pacemakers fail.
Created by: user-1990156
 

 



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