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A comprehensive overview of various heart rhythm disorders, including 2nd and 3rd degree heart blocks, atrial fibrillation, atrial flutter, idioventricular rhythm, asystole, junctional tachycardia, and monomorphic ventricular tachycardia. It explains the characteristics, causes, and potential treatments for each condition, offering valuable information for medical students, nurses, and healthcare professionals.
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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
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< looks like vtach but slow
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
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< looks like vtach but slow
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
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< looks like vtach but slow
Sinus Bradycardia - ans< 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
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< 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
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
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
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
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