Ekg Rhythms

The correct answer, 2 Degree AV Block (Mobitz II), is characterized by equal PR intervals or conducted beats, but some P waves are blocked. In contrast, Atrial Fibrillation, Sinus Bradycardia, and Ventricular Tachycardia do not meet the criteria described in the question.

A non-conducted PAC (Premature Atrial Contraction) refers to when the atrial impulse (P-wave) occurs too early in the cardiac cycle, during the refractory period of the AV node, and is not conducted through to the ventricles. This can lead to irregular heart rhythms.

Fusion beat is a complex ventricular ectopic beat that occurs as a result of simultaneous conduction of an atrial impulse and a ventricular impulse. This results in widened and distorted QRS complexes on ECG. Atrial Fibrillation, Ventricular Tachycardia, and Bundle Branch Block present with different ECG findings and are not characterized by fusion beats.

The ECG findings described are classic for a Right Bundle Branch Block. RBBB is characterized by a wider QRS complex (QRS > or equal to .12), presence of an RSR pattern in the chest leads (V1, V2, or V3), and a notable biphasic QRS complex with a terminal S-wave in Lead 1.

The given criteria of QRS

Normal sinus rhythm is characterized by a 1:1 ratio of P waves to QRS complexes, a heart rate of 60-100 bpm, a PR interval of .12-.20 seconds, and a QRS duration of less than .10 seconds. Atrial Fibrillation, Ventricular Tachycardia, and Second-degree AV block do not meet all the criteria for normal sinus rhythm.

Sinus Bradycardia is a condition where the heart rate is less than 60 beats per minute. Atrial Fibrillation, Ventricular Tachycardia, and Supraventricular Tachycardia are all different cardiac arrhythmias characterized by irregular heart rhythms, but not necessarily a slow heart rate.

A PR Interval greater than .20 is a characteristic finding in 1st Degree AV Block, where there is delayed conduction at the atrioventricular node.

Atrial Fibrillation is characterized by the absence of P-waves, quivering baseline, irregularly-irregular rhythm, and normal QRS complexes. Asystole, Ventricular Tachycardia, and Sinus Bradycardia do not exhibit the same ECG findings as Atrial Fibrillation.

Premature beats refer to heartbeats that occur earlier than expected in the cardiac cycle. PAC stands for Premature Atrial Contraction, PVC stands for Premature Ventricular Contraction, and PJC stands for Premature Junctional Contraction.

Escape beats refer to the spontaneous beats that occur after long pauses in the heart's rhythm. Sinus beats are normal heartbeats that originate in the sinus node. Atrial beats refer to heartbeats originating in the atria. Premature beats are heartbeats that occur earlier than expected in the cardiac cycle.

V Tach, or ventricular tachycardia, is characterized by an irregular rhythm, wide and bizarre QRS complexes, and a rate of 150-250 beats per minute. Sinus tachycardia is a normal rhythm with an elevated rate, atrial fibrillation presents with irregularly irregular rhythm and fibrillatory waves, and premature ventricular contractions are extra heartbeats originating from the ventricles.

Ventricular fibrillation (V Fib) is a serious cardiac arrhythmia characterized by a chaotic, rapid electrical activity in the ventricles, leading to ineffective heart pumping and potentially sudden cardiac arrest. Atrial flutter, premature ventricular contractions (PVCs), and supraventricular tachycardia (SVT) are distinct types of arrhythmias that do not necessarily involve the random electrical discharge of the ventricles seen in ventricular fibrillation.

Idioventricular Rhythm is a slow heart rhythm originating from the ventricles, resulting in a heart rate of 20-40 bpm with wide and bizarre QRS complexes. Sinus Bradycardia is a slow heart rhythm originating from the sinus node, Atrial Fibrillation is an irregular rapid heart rhythm originating from the atria, and Ventricular Fibrillation is a life-threatening rapid and chaotic heart rhythm originating from the ventricles.

Agonal-asystole refers to a critical state when the heart is barely beating and eventually goes into a complete flat line. Ventricular fibrillation is a chaotic rhythm of the heart that results in ineffective pumping of blood. Atrial flutter is a rapid, regular atrial rhythm that can cause symptoms but usually does not result in cardiac arrest. Sinus bradycardia is a slow heart rate originating from the sinus node, which is not indicative of the described ECG activity.

When the QT interval is more than half the RR interval with a normal heart rate, it indicates QT Interval prolongation. This can lead to an increased risk of arrhythmias and sudden cardiac death.

The correct answer is Multiatrial Rhythm because it is characterized by slightly irregular P-Waves with each one being slightly different, and normal QRS complexes. Sinus Rhythm has regular P-Waves and QRS complexes. Atrial Flutter has a sawtooth pattern on ECG. Premature Atrial Contraction presents with an early P-wave, typically followed by a normal QRS complex.

Sinus arrest is characterized by long pauses in the heart's normal electrical activity, followed by an escape beat. This is different from atrial flutter, ventricular fibrillation, and Torsades de pointes, which are not characterized by this specific pattern.

The combination of QRS greater than .10, PR less than .12, and a Delta wave presence is characteristic of Wolff-Parkinson-White (WPW) syndrome. This syndrome is caused by an abnormal accessory electrical pathway between the atria and the ventricles.

A 3rd Degree AV Block is characterized by a complete block at the AV node, resulting in no relationship between P-QRS complexes, with constant P-P intervals (march), and constant QRS intervals. Sinus Node Dysfunction, Ventricular Tachycardia, and Premature Atrial Contraction do not match these specific criteria.

A long pause followed by a P Wave typically indicates a Sinus Exit Block, where the sinus node fails to generate an impulse for a certain amount of time. Sinus Bradycardia is characterized by a slow heart rate without pauses. Atrial Fibrillation shows an irregularly irregular rhythm with no discernible P Waves. Atrioventricular Block is characterized by delay or interruption in the conduction of electrical signals between the atria and ventricles.

Supraventricular tachycardia (SVT) is characterized by a rapid heart rate originating above the ventricles with narrow QRS complexes. Ventricular tachycardia (VT) typically presents with wide QRS complexes. Atrial fibrillation (AFib) often has an irregularly irregular rhythm. Sinus tachycardia is a normal response to stress or exertion and typically presents with a rate of 100-180 bpm.

Sinus arrhythmia is a common type of irregular heart rhythm where the heart rate varies with respiration, giving it a slightly accordian-like irregularity. Atrial fibrillation, ventricular tachycardia, and supraventricular tachycardia are different types of irregular heart rhythms with distinct characteristics.

Atrial Flutter is characterized by characteristic sawtooth flutter waves on ECG, and the rhythm may be regular. Sinus Bradycardia is a condition with a slow heart rate originating from the sinus node. Ventricular Fibrillation is a life-threatening arrhythmia with disorganized electrical activity in the ventricles. Atrial Fibrillation is a common arrhythmia with chaotic, irregular atrial activity.

2 Degree AV Block (Mobitz I) is characterized by a progressively lengthening PR interval until a beat is blocked. The cycle then repeats, with the PR interval lengthening again before another blocked beat.