37 results
Type 1 Second-degree AV block, also known as Mobitz I or Wenckebach periodicity, is almost always
Type 1 Second-degree ... also known as Mobitz ... prolongation of the PR ... QRS complex, the PR ... #Mobitz1 #Mobitz
Type 1 Second-degree AV block, also known as Mobitz I or Wenckebach periodicity, is almost always
Type 1 Second-degree ... also known as Mobitz ... prolongation of the PR ... QRS complex, the PR ... #Mobitz1 #Mobitz
Second degree AV Block type II (aka Mobitz II)
 • There is constant PR interval (normal
degree AV Block type ... II (aka Mobitz ... There is constant PR ... AVBlock #TypeII #MobitzII ... #Type2 #diagnosis
Second Degree Heart Block, Mobitz Type I (Wenckebach)

P waves and QRS complexes are normal but... 
•
Degree Heart Block, Mobitz ... Type I (Wenckebach ... • PR interval ... the AV node #Mobitz ... #Type1 #Type1 #
Second Degree Heart Block, Mobitz Type II

• p waves are normal 
• QRS complexes are usually
Degree Heart Block, Mobitz ... Type II • p ... branch block • PR ... His-Purkinje system #Mobitz ... #Type2 #TypeII
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
• Prolonged PR ... Treatment 2nd Degree, Mobitz ... . 2nd Degree, Mobitz ... #HeartBlocks #Types ... #Classification
Pacemaker Placement Indications
Class I:
 • Third degree block
 • Advanced 2nd degree block
 • Symptomatic Mobitz
• Symptomatic Mobitz ... I or II • Mobitz ... arrest, prolonged PR ... , Mobitz I without ... • Reversible causes
Atrioventricular (AV) Blocks

First Degree AV Block - "If your R is far from your P than
with prolonged PR ... Degree AV Block - Mobitz ... Type 1 (Weinckebach ... Type 2 "If some ... with progressive PR
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Vaughan Williams Classification ... rate and prolongs PR ... rate and prolongs PR ... VaughanWilliams #Classification ... #Classes #cardiology
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
block 1º - long PR ... 200ms from longer pause ... 2º - Mobitz I ... successively longer PR ... II / Mobitz - ,