2nd Degree Heart Block (Mobitz II) - ansRare, but more serious
Sudden appearance of a nonconducted P-wave
P-waves are nl, but some aren't followed by a QRS complex
PR & RR intervals are constant
2nd degree heart block type 1 (Wenkebach) - ansProgressively longer PR interval until
the P wave is not followed by a QPR
3rd degree heart block - ansno obvious correlation between p and qrs, need pace
maker
Accelerated Idioventricular Rhythm - ansRate: 50 - 100 usually (usually slow)
P wave: Obscured by ventricular waves (occur during ventricular contraction) - SA node
slower than faster ventricular pacing than should be
QRS: Wide QRS
Conduction: Ventricular only
Rhythm: Regular
- benign rhythm that is sometimes seen during acute MI or early after reperfusion. -
Rarely sustained, does not progress to vfib, rarely requires treatment
asystole - ansabsence of contractions of the heart
Atrial Fibrillation (A-Fib) - ansan irregular and often very fast heart rate originating from
abnormal conduction in the atria
Atrial Flutter - ansirregular beating of the atria; often described as "a-flutter with 2 to 1
block or 3 to 1 block"
Atrial paced rhythm - ansspike before P wave
Bigeminy PVC - ansevery other beat is a PVC
Failure to capture (pacemaker) - ans
failure to sense (pacemaker) - ans
First degree heart block - ansatrioventricular (AV) block in which the atrial electrical
impulses are delayed by a fraction of a second before being conducted to the ventricles
Idioventricular Rhythm - ans<40
*looks like vtach but slow*
- no P waves (from vent foci)
- Wide QRS
(serious, death like rhythm)
- called "dying heart" rhythm...occasional ventric beat b4 death (asystole)
Junctional Rhythm - ans40-60 Regular!
-impulse from AV node w/ retro/antegrade transmission
- P wave often inverted/buried/follow QRS
- slow rate
- narrow QRS (not wide like ventricular)
Junctional Tachycardia - ans>60 bpm (ms. K; 150-250)
- KEY: will be regular (consistent)
- AV junction produces a rapid sequence of QRS-T cycles
- p-wave often inverted/buried/follow QRS
monomorphic ventricular tachycardia - anspresents with wide QRS complexes of a
common shape.
normal sinus rhythm - ansheart rhythm originating in the sinoatrial node with a rate in
patients at rest of 60 to 100 beats per minute
Premature Atrial Contraction (PAC) - ansHeart Rate: Depends on underlying rhythm
Regularity: Interrupts the regularity of underlying rhythm
P-Wave: can be flattened, notched, or unusual. May be hidden within the T wave
PRI: measures between .12-.20 seconds and can be prolonged; can be different from
other complexes
QRS: <.12 seconds
Premature Junctional Contraction - ansInverted p wave or hidden p wave
PRI<0.12 or none
Normal QRS
premature ventricular contraction (PVC) - ansa ventricular contraction preceding the
normal impulse initiated by the SA node (pacemaker)
PVC couplets - ansPVC occurring in pairs, no adequate C.O. when this occurs
Sinus Arrest/Pause - ans- SA node doesn't fire
- notice absence of P-wave for a complete cycle (a missed cycle)
length of pause ≠ multiple of normal rate (block)
Sinus Arrhythmia - ansAppearance is ALMOST NORMAL:
Respiratory - Circulatory interaction
Rate INCREASES with INSPIRATION (IN=IN)
Sinus Bradycardia - ans<60
normal sinus rhythm
Sinus Tachycardia - ans>100 (100-150)
normal sinus rhythm
Supraventricular Tachycardia (SVT) - ansan abnormal heart rhythm arising from
aberrant electrical activity in the heart; originates at or above the AV node
Torsades de pointes - ansRate: 120 - 200 usually
P wave: Obscured by ventricular waves
QRS: Wide QRS - "Twisting of the Points"
Conduction: Ventricular only
Rhythm: Slightly irregular
Ventricular fibrillation (V-fib) - ansabnormal heart rhythm which results in quivering of
ventricles
Ventricular paced rhythm - ansventricular contractions which occur in cases of complete
heart block.
2nd Degree Heart Block (Mobitz II) - ansRare, but more serious
Sudden appearance of a nonconducted P-wave
P-waves are nl, but some aren't followed by a QRS complex
PR & RR intervals are constant
2nd degree heart block type 1 (Wenkebach) - ansProgressively longer PR interval until
the P wave is not followed by a QPR
3rd degree heart block - ansno obvious correlation between p and qrs, need pace
maker
Accelerated Idioventricular Rhythm - ansRate: 50 - 100 usually (usually slow)
P wave: Obscured by ventricular waves (occur during ventricular contraction) - SA node
slower than faster ventricular pacing than should be
QRS: Wide QRS
Conduction: Ventricular only
Rhythm: Regular
- benign rhythm that is sometimes seen during acute MI or early after reperfusion. -
Rarely sustained, does not progress to vfib, rarely requires treatment
asystole - ansabsence of contractions of the heart
Atrial Fibrillation (A-Fib) - ansan irregular and often very fast heart rate originating from
abnormal conduction in the atria
Atrial Flutter - ansirregular beating of the atria; often described as "a-flutter with 2 to 1
block or 3 to 1 block"
Atrial paced rhythm - ansspike before P wave
Bigeminy PVC - ansevery other beat is a PVC
Failure to capture (pacemaker) - ans
failure to sense (pacemaker) - ans
First degree heart block - ansatrioventricular (AV) block in which the atrial electrical
impulses are delayed by a fraction of a second before being conducted to the ventricles
Idioventricular Rhythm - ans<40
*looks like vtach but slow*
- no P waves (from vent foci)
- Wide QRS
(serious, death like rhythm)
- called "dying heart" rhythm...occasional ventric beat b4 death (asystole)
Junctional Rhythm - ans40-60 Regular!
-impulse from AV node w/ retro/antegrade transmission
- P wave often inverted/buried/follow QRS
- slow rate
- narrow QRS (not wide like ventricular)
Junctional Tachycardia - ans>60 bpm (ms. K; 150-250)
- KEY: will be regular (consistent)
- AV junction produces a rapid sequence of QRS-T cycles
- p-wave often inverted/buried/follow QRS
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LAWEXEPRT. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £8.50. You're not tied to anything after your purchase.
