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LSMC Basic Dys

Stack #76461

QuestionsAnswers
If the SA node fails, what takes over as pacemaker for the heart? The AV node
At what rate does the SA node inherently fire? 60 to 100 beats per minute
At what rate does the AV node inherently fire? 40 to 60 beats per minute
What is a rhythm called if the impulse is generated from the AV node? Nodal or Junctional rhythm
If the AV node fails, what pacemaker could initiate impules for the cardiac cycle? The ventricles
At what rate do the ventricles fire if they initiate the cardiac cycle? 20 to 40 beats per minute
What is a rhythm called when the ventricles are initiating the cardiac cycle? Ventricular escape rhythm or idioventricular rhythm
Trace the impulse for a normal cardiac cycle initiated from the SA node Sa node to AV node, through the bundle of HIS to the purkinje fibers
To be considered normal, what components must be present on ECG? P wave, QRS complex and T wave
What is the most commonly used lead for monitoring ECG? Lead II
How much time is a small square on an ECG worth? 0.04 secs
On an ECG, how many small squares are in one large square? 5
How much time is represented on an ECG by one large square? 0.20 secs
What does the P wave represent? Atrial depolarization
What does the QRS complex represent? Ventricular depolarization
What happens to the atria when they depolarize? They contract
What happens to the ventricles when they depolarize? They contract
On the ECG, what does the T wave represent? Ventricular repolarization
What is conisdered a normal value for a P-R interval? 0.12 to 0.20 sec
What is it called when the P-R interval is greater than 0.20 sec? First degree heart block
How do you check for regularity on an ECG? Measure R to R intervals
What compromises the 5 steps for cardiac rhythm identification? Rate, Regularity, P-wave examination, P-R interval, QRS width
Identify the following rhythm: See screen
What method would you use to determine rate in the presence of an irregular rhythm? 6 second counting method
What method would you use to determine rate with a regular rhythm? Count the number of small boxes between complexes (R waves) and divide into 1500
List the rate requirements for Normal Sinus Rhythm, Sinus Brady and Sinus Tachy Normal = 60 to 100, Brady below 60, tachy above 100
What is a PAC? Premature Atrial contraction
What is a PVC? Premature Ventricular contraction
What is the differentiation between atrial fibrillation and atrial flutter? Atrial fib is irregular with no definate P waves, atrial flutter has a saw-toothed pattern or "F" waves
What does RVR stand for and when would you see it used? Rapid ventricular response as pertaining to atrial fibrillation
Indentify the following rhythm See screen
In what two types of heart block is the P-R interval constant? First degree and second degree Type II
In what two types of heart block is the P-R interval not constant? Second degree Type I (Wenckebach) and Third Degree (Complete) Heart block
What is considered the charicteristic pattern in Wenckebach? P-R interval longer, longer, longer, then QRS complex is dropped
What is the term used to describe when every-other beat is a PVC? Bigeminal PVCs
Identify the following rhythm: See screen
Identify the following rhythm: See screen
Identify the following rhythm: See screen
What is seen on an ECG with a paced rhythm? A pacer spike prior to the P wave and/or QRS complex
If your patient is noted to be in V-Tach, what is your FIRST action? Check the patient!
Identify the following rhythm: See screen
Identify the following rhythm: See screen
What is the initial treatment for v-fib? Defibrillation
Identify the following rhythm: See screen
What is the ventricular activity like in ventricular fibrillation? Chaotic - ventricle is quivering with complete loss of cardiac output
If a complex otherwise falls into the category of NSR, but has a widened QRS complex this is termed... Bundle Branch Block
Identify the following rhythm: See screen
Created by: pkmamma525
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