122 results
Type 1 Second-degree AV block, also known as Mobitz I or Wenckebach periodicity, is almost always
prolongation of the PR ... electrocardiogram (ECG ... QRS complex, the PR ... Cardiology #MedStudent #EKG ... #MobitzI #Mobitz1
Type 1 Second-degree AV block, also known as Mobitz I or Wenckebach periodicity, is almost always
prolongation of the PR ... electrocardiogram (ECG ... QRS complex, the PR ... Cardiology #MedStudent #EKG ... #MobitzI #Mobitz1
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
Block type II (aka Mobitz ... There is constant PR ... AVBlock #TypeII #MobitzII ... #ekg #electrocardiogram ... #Mobitz2
Mobitz II heart block is characterized on a surface ECG by intermittently nonconducted P waves not
characterized on a surface ECG ... not preceded by PR ... not followed by PR ... Cardiology #MedStudent #EKG ... #MobitzII #Mobitz2
Second Degree Heart Block, Mobitz Type I (Wenckebach)

P waves and QRS complexes are normal but... 
•
Degree Heart Block, Mobitz ... • PR interval ... the AV node #Mobitz ... Diagnosis #Cardiology #EKG ... #ECG #Electrocardiogram
Second Degree Heart Block, Mobitz Type II

• p waves are normal 
• QRS complexes are usually
Degree Heart Block, Mobitz ... branch block • PR ... His-Purkinje system #Mobitz ... Diagnosis #Cardiology #EKG ... #ECG #Electrocardiogram
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
Treatment 2nd Degree, Mobitz ... . 2nd Degree, Mobitz ... HeartBlocks #Types #Classification ... summary #Diagnosis #EKG ... electrocardiogram #ecg
Pacemaker Placement Indications
Class I:
 • Third degree block
 • Advanced 2nd degree block
 • Symptomatic Mobitz
Placement Indications Class ... • Symptomatic Mobitz ... I or II • Mobitz ... II: • Mobitz II ... arrest, prolonged PR
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Vaughan Williams Classification ... Class I (Ia, Ib ... rate and prolongs PR ... rate and prolongs PR ... VaughanWilliams #Classification
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
block 1º - long PR ... successively longer PR ... 3, etc.) 2º - Mobitz ... II / Mobitz - , ... #EKG #diagnosis