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ECG OF THIS WEEK Dr.A.Meenakshi . PROF.S.TITO’S UNIT. M6
 
<ul><li>Sinus rhythm. </li></ul><ul><li>Rate 45 per minute. </li></ul><ul><li>Axis +30 degree.  </li></ul><ul><li>PR inter...
Heart block <ul><li>Heart block is a delay or interruption in conduction of atrial impulse through the AV conducting syste...
<ul><li>SECOND DEGREE AV BLOCK; </li></ul><ul><li>Intermittent failure or interruption of AV conduction. </li></ul><ul><li...
<ul><li>Mobitz type II AV block </li></ul><ul><li>Sudden block of conduction of an impulse occurs. </li></ul><ul><li>PR in...
<ul><li>THIRD DEGREE(COMPLETE AV BLOCK); </li></ul><ul><li>Complete interruption of AV conduction occurs. </li></ul><ul><l...
<ul><li>Treatment of second degree heart block;- </li></ul><ul><li>Asymptomatic is treated by vagolytic agent atropine. </...
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ECG - Mobitz Type II block

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ECG - Mobitz Type II block

  1. 1. ECG OF THIS WEEK Dr.A.Meenakshi . PROF.S.TITO’S UNIT. M6
  2. 3. <ul><li>Sinus rhythm. </li></ul><ul><li>Rate 45 per minute. </li></ul><ul><li>Axis +30 degree. </li></ul><ul><li>PR interval 180msec. </li></ul><ul><li>PR interval constant. </li></ul><ul><li>QRS duration 80 msec. </li></ul><ul><li>QTc490msec. </li></ul><ul><li>2:1 block </li></ul><ul><li>Constant PP interval. </li></ul><ul><li>ST-T changes in LeadI,avL,V1,V2. </li></ul><ul><li>DIAGNOSIS-MOBITZ TYPE II HEART BLOCK with 2:1 BLOCK. </li></ul>
  3. 4. Heart block <ul><li>Heart block is a delay or interruption in conduction of atrial impulse through the AV conducting system. </li></ul><ul><li>FIRST DEGREE AV block; </li></ul><ul><li>Delay in conduction through the conducting system. </li></ul><ul><li>Leading to prolonged PR interval >0.20 sec. </li></ul><ul><li>All P waves are followed by QRS complexes. </li></ul>
  4. 5. <ul><li>SECOND DEGREE AV BLOCK; </li></ul><ul><li>Intermittent failure or interruption of AV conduction. </li></ul><ul><li>Two types;-Mobitz typeI ,Mobitz typeII. </li></ul><ul><li>Mobitz typeI or Wenckebach phenomena; </li></ul><ul><li>Progressive prolongation of PR interval until a beat is dropped. </li></ul>
  5. 6. <ul><li>Mobitz type II AV block </li></ul><ul><li>Sudden block of conduction of an impulse occurs. </li></ul><ul><li>PR interval of all impulse is constant prior to blocked P wave. </li></ul><ul><li>Lesion usually occurs in the bundle of HIS. </li></ul><ul><li>It can be due to Rheumatic carditis,coronary artery disease. </li></ul><ul><li>Always organic or pathological. </li></ul><ul><li>Prognosis bad. </li></ul>
  6. 7. <ul><li>THIRD DEGREE(COMPLETE AV BLOCK); </li></ul><ul><li>Complete interruption of AV conduction occurs. </li></ul><ul><li>P wave has no relationship to QRS complex. </li></ul>
  7. 8. <ul><li>Treatment of second degree heart block;- </li></ul><ul><li>Asymptomatic is treated by vagolytic agent atropine. </li></ul><ul><li>Indication for permanent pacing;- </li></ul><ul><li>1 .Symptomatic second degree AV block </li></ul><ul><li>2.AV block in acute anterior MI. </li></ul><ul><li>3.Asymptomatic advanced second degree AV block with asystole greater than 3 seconds. </li></ul>
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