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CARDIAC ARRHYTHMIAS

Clk. Alexander L. Gonzales II December 14, 2010. CARDIAC ARRHYTHMIAS. SINUS RHYTHM. > 60bpm and <100bpm P-wave in front of QRS QRS is narrow Rhythm is regular. BRADYARRHYTHMIAS. CARDIAC ARRHYTMIAS. SINUS BRADYCARDIA. Slow heart beat (<60bpm) Normal rhythm, but slow P wave is present

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CARDIAC ARRHYTHMIAS

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  1. Clk. Alexander L. Gonzales II December 14, 2010 CARDIAC ARRHYTHMIAS

  2. SINUS RHYTHM • >60bpm and <100bpm • P-wave in front of QRS • QRS is narrow • Rhythm is regular

  3. BRADYARRHYTHMIAS CARDIAC ARRHYTMIAS

  4. SINUS BRADYCARDIA • Slow heart beat (<60bpm) • Normal rhythm, but slow • P wave is present • QRS is narrow

  5. SINUS PAUSE • SA node stops working • Pause in heart beat for 6-8s

  6. PREMATURE BEATS CARDIAC ARRHYTHMIAS

  7. ATRIAL PREMATURE CONTRACTION • QRS is normal • P-wave is present but looks different on the premature beat

  8. AV NODAL PREMATURE CONTRACTION = JUNCTIONAL • No P-wave before premature beat b/c originates in AV node, not atria • QRS is normal

  9. PREMATURE VENTRICULAR CONTRACTION • Every other beat is abnormal (ventricular bigemini) • One QRS complex and P-wave are normal • Next QRS is wide and T-wave is inverted (-) repolarization is abnormal

  10. SUPRAVENTRICULAR TACHYCARDIAS CARDIAC ARRHYTMIAS

  11. SINUS TACHYCARDIA • >100bpm • Normal P-wave • Narrow QRS

  12. ATRIAL TACHYCARDIA • P-wave is inverted (-) • 2 P-waves per every QRS complex

  13. AV NODAL REENTRANT TACHYCARDIA • No P-wave b/c it’s within QRS complex • QRS is narrow, looks normal but is faster • Regular rhythm

  14. PREEXCITATION: WOLFE PARKINSON WHITE SYNDROME • Slurred upslope on QRS and wider complex • PR is shorter • -wave (pts. prone to SVTs) • Tachycardia pathway: AV node  accessory pathway  atrium (-wave disappears, but will return once HR)

  15. SVT WITH SHORT RP (REFRACTORY PERIOD) • QRS is narrow • 1:1 relationship b/w P-wave and QRS • Can see P-wave before QRS

  16. ATRIAL FLUTTER • Regular and reproducible • QRS is narrow • See (-) complexes • Saw tooth pattern

  17. ATRIAL FIBRILLATION • Disorganized rhythm • Pulse is irregularly irregular/irregular rhythm • QRS is narrow • No P-wave

  18. VENTRICULAR TACHYARRHYTHMIA • Occur in bottom chambers • >3 PVC in a row  V-tach • Nonsustained stops after a certain time period • No P-waves • Repolarization is abnormal • QRS complexes are wider • More QRS than P-waves

  19. TORSADES DE POINTES • Long QT interval • QRS complexes are all over the place  look abnormal

  20. VENTRICULAR FIBRILLATION • Complete disorganization • No P-waves • No QRS complexes

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