Supraventricular Tachycardias - Pathophysiology Conduction pathways through SA Node, Atrium, AV Node, Bundle of His, and Ventricle • Sinus Tachycardia • Atrial Tachycardia • Atrial Flutter • Atrial Fibrillation • AV Nodal Reentry Tachycardia • AV Reentry Tachycardia #Supraventricular #Tachycardias #Pathophysiology #SVT #diagnosis #cardiology #conduction #pathways #avnrt

Ventricular Standstill on ECG Strip A rare ecg strip of a pt s/p heart transplant. Ventricular standstill Atrial dissociation (2 P waves marked red/blue arrow) #Ventricular #Standstill #ecg #telemetry #clinical #cardiology #rhythmstrip

ECG features of Torsades de Pointes (TdP) #Torsades #dePointes #TdP #diagnosis #cardiology #clinical #ekg #ecg #electrocardiogram

Spinal Stimulator Artifact on ECG #spinal #spine #stimulator #Artifact #ECG #ekg #cardiology #clinical #electrocardiogram

Deep Brain Stimulator (DBS) Artifact on ECG in Parkinsons #DBS #brain #stimulator #Artifact #ECG #Parkinsons #ekg #cardiology #clinical #electrocardiogram

Multifocal Atrial Rhythm vs Wandering Atrial Pacemaker Mutifocal Atrial Rhythm / Multifocal Atrial Tachycardia: Belong to a group called Multifocal Atrial Arrhythmia (MAA). The electrocardiographic criteria for the diagnosis of MAA that includes both MAT (atrial rate ≥ 100 beats/min) and MAR (atrial rate < 100 beats/min) consisted of a variable P-wave morphology of at least 3 different configurations and an irregular PP and PR interval Wandering Atrial Pacemaker: VARIANT OF SINUS ARRHYTHMIA - involves passive transfer of the dominant pacemaker focus from the sinus node to latent pacemakers that have the next highest degree of automaticity located in other atrial sites (usually lower in the crista terminalis) or in AV junctional tissue. The change occurs in a GRADUAL fashion over the duration of several beats; thus, only one pacemaker at a time controls the rhythm, in sharp contrast to AV dissociation #Multifocal #Atrial #Rhythm #tachycardia #Wandering #Pacemaker #wap #diagnosis #cardiology #ekg #ecg #electrocardiogram #comparison

Ventricular Tachycardia in Wide Complex Tachycardia - Telemetry Diagnosis • Lead V1 - LBBB Criteria • Lead V1 - RBBB Criteria • Lead II - R-Wave Peak Time (RWPT) • Lead aVR - Vereckie Algorithm #Algorithm #Ventricular #Tachycardia #WCT #VTach #diagnosis #cardiology #ekg #ecg #telemetry

Vereckie Algorithm - Lead aVR - Ventricular Tachycardia - Telemetry Diagnosis WCT is VT IF: • Initial dominant R • Initial r or q wave > 40 ms • Notched downstroke of negative QRS • Voltage Δ in the last 40 ms > Voltage Δ in the first 40 ms #Vereckie #Algorithm #Ventricular #Tachycardia #WCT #VTach #avr #diagnosis #cardiology #ekg #ecg #telemetry #telemetry

Pava Criteria - R-Wave Peak Time (RWPT) - Lead II - Ventricular Tachycardia Criteria - Telemetry Diagnosis WCT is VT IF: RWPT ≥ 50 ms #Pava #Criteria #Ventricular #Tachycardia #WCT #VTach #leadII #diagnosis #cardiology #ekg #ecg #RWPT #telemetry

RBBB Ventricular Tachycardia Criteria - Lead V1 - Telemetry Diagnosis WCT is VT IF: • R > R' "rabbit-ear" • Monophasic R • QR, qR, RS, Biphasic QRS #RBBB #Ventricular #Tachycardia #WCT #VTach #Criteria #V1 #diagnosis #cardiology #ekg #ecg #telemetry