EKG Exam 1 Questions & Answers 2024
Which heart rhythm is characterized by the following:
P waves and QRS are firing on their own (they are disassociated)
Slow ventricular rate. - ANSWER-3rd degree heart block
Normal PR interval? - ANSWER-0.12-0.20
Normal QRS? - ANSWER-0.04-0.12
T...
EKG Exam 1 Questions & Answers 2024
Which heart rhythm is characterized by the following:
P waves and QRS are firing on their own (they are disassociated)
Slow ventricular rate. - ANSWER-3rd degree heart block
Normal PR interval? - ANSWER-0.12-0.20
Normal QRS? - ANSWER-0.04-0.12
This heart rhythm changes with inspiration - ANSWER-Sinus arrhythmia
Rhythm characterized by a sawtooth pattern on EKG - ANSWER-Atrial flutter
Any rate that is > 150 = - ANSWER-Supraventricular tachycardia (SVT)
When does PVC become pathologic? - ANSWER-When there are more than 6/minute
Which heart rhythm is characterized by the following:
Normal sinus rhythm that pauses for a little and then resumes back to normal sinus rhythm - ANSWER-
Sinus pause
How many PVC's in a row make ventricular tachycardia? - ANSWER-3 in a row = V tach
What is the difference between ventricular tachycardia and supraventricular tachycardia? - ANSWER-The difference is in how wide the QRS is In SVT, the QRS complex is shorter (< 0.4)
In VT, it is a little wider
QRS greater than 0.12 is characteristic of: - ANSWER-Bundle branch block
What suggests the diagnosis of SVT rather than V tach? - ANSWER-SVT has a QRS < 0.14 (it would have a more narrow QRS than VT)
What is the difference between Torsades and ventricular fibrillation? - ANSWER-Torsades is more marked
than ventriuclar fibrillation
1st degree AV block is characterized by: - ANSWER-PR interval greater than 0.2
Ion responsible for SA and AV node depolarization - ANSWER-Calcium
Ion that initiates myocyte depolarization - ANSWER-Sodium
An early beat with no P wave is: - ANSWER-Premature junctional beat
What is the rate for sinus tachycardia? - ANSWER-100-150
What is the difference between atrial fibrillation and atrial flutter? - ANSWER-In A fib - no distinct P waves, QRS = irregularly spaced
The capacity of a single cell to generate action potential sponatneously - ANSWER-Automaticity
Right bundle branch block looks like: - ANSWER-Bunny ears
Left bundle branch block looks like: - ANSWER-Swoop
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