Accessory pathway
Contents
- 1 Most common sites for accessory pathways
- 2 Mahaim pathways are typically seen on the
- 3 Ventricular connections of Mahaim pathways are located close to
- 4 What is the type of conduction through a Mahaim pathway
- 5 What is the ECG appearance of QRS complexes in case of maximal pre-excitation through a Mahaim pathway as occurs during antidromic atrioventricular re-entrant tachycardia?
- 6 Multiple accessory pathway are more common in
- 7 Wolff-Parkinson-White (WPW) pattern includes ALL of the following EXCEPT
- 8 WPW syndrome is a disorder characterized by all of the following EXCEPT
- 9 Patient with asymptomatic pre-excitation who happen to be competitive athletes is advised to undergo EPS for risk stratification and potential ablation
- 10 A patient with diagnosis of WPW Syndrome planned for Noninvasive Assessment. When injection Ajmalin given the pre-excitation [delta wave] disappeared. Which risk category the patient should beplaced.
- 11 Classic triad of electrocardiographic findings in Wolff-Parkinson-White syndrome are all EXCEPT
- 12 ALL are TRUE about type A pre-excitation EXCEPT
- 13 What is the name of accessory pathway in WPW Syndrome?
- 14 Most common congenital heart defect associated with Wolff-Parkinson-White syndrome
- 15 ECG features of WPW in sinus rhythm
Most common sites for accessory pathways
[A] Atrio-ventricular pathways
[B] Atrio-fascicular pathways
[C] Nodo-ventricular pathways
[D] Fasciculo-ventricular pathways
Mahaim pathways are typically seen on the
[A] Left side of the heart
[B] Right side of the heart
[C] Base of the heart
[D] Apex of the heart
Ventricular connections of Mahaim pathways are located close to
[A] Left bundle branch
[B] Right bundle branch
[C] Left anterior fascicle
[D] Left posterior fascicle
What is the type of conduction through a Mahaim pathway
[A] Concealed Conduction
[B] Fixed Conduction
[C] Ventricular Aberration
[D] Decremental Conduction
What is the ECG appearance of QRS complexes in case of maximal pre-excitation through a Mahaim pathway as occurs during antidromic atrioventricular re-entrant tachycardia?
[A] LBBB
[B] RBBB
[C] LAHB
[D] AV Block
Multiple accessory pathway are more common in
[A] Ostium Primum ASD
[B] AVSD
[C] Tetralogy of Fallot
[D] Ebstein’s anomaly
Wolff-Parkinson-White (WPW) pattern includes ALL of the following EXCEPT
[A] Short PR interval
[B] Delta wave
[C] Tachycardia
[D] Anterograde conduction
WPW syndrome is a disorder characterized by all of the following EXCEPT
[A] Preexcitation on the baseline electrocardiogram
[B] At least three accessory pathway that predispose to tachyarrhythmias
[C] Symptomatic tachyarrhythmias
[D] Can cause sudden cardiac death
Patient with asymptomatic pre-excitation who happen to be competitive athletes is advised to undergo EPS for risk stratification and potential ablation
[A] Class I
[B] Class IIA
[C] Class IIB
[D] Class III
A patient with diagnosis of WPW Syndrome planned for Noninvasive Assessment. When injection Ajmalin given the pre-excitation [delta wave] disappeared. Which risk category the patient should beplaced.
[A] Low risk Category
[B] High risk Category
[C] Intermidiate risk category
[D] Indication for ICD implantation
Classic triad of electrocardiographic findings in Wolff-Parkinson-White syndrome are all EXCEPT
[A] Short PR interval
[B] Wide QRS complex
[C] Delta wave
[D] PSVT
ALL are TRUE about type A pre-excitation EXCEPT
[A] Right atrioventricular connections
[B] Positive R wave is seen in V1
[C] Positive delta
[D] RR intervals of less than 250 ms suggest a higher risk pathway
What is the name of accessory pathway in WPW Syndrome?
[A] Bundle of Kent
[B] Bachmann bundle
[C] Purkinje fibers
[D] Mahaim accessory pathways
Most common congenital heart defect associated with Wolff-Parkinson-White syndrome
[A] ASD
[B] VSD
[C] Tetralogy Of Fallot
[D] Ebstein anomaly
ECG features of WPW in sinus rhythm
- PR interval < 120ms
- Delta wave: slurring slow rise of initial portion of the QRS
- QRS prolongation > 110ms
- Discordant ST-segment and T-wave changes (i.e. in the opposite direction to the major component of the QRS complex)
- Pseudo-infarction pattern in up to 70% of patients — “pseudo-Q waves” or prominent R waves in V1-3 (mimicking posterior infarction)
