CMC ECG MASTERS
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    • Prolonged QT
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Case 13

Picture
Diagnosis
Prolonged QT
Key Characteristics
•Qtc >440 ms in men >460 ms in women
•More than half the RR interval
​•Time for ventricular depol and repolarization
•Shorter with tachycardia
•Longer with bradycardia
•Risk for ventricular arrhythmias/Torsades
Causes
  • Drug induced
  • Antihistamines
    • Organophosphates
    • TCAs
    • Phenothiazines
    • Antidyrhythmics
  • Electrolyte Abnormalities 
    • hypoK
    • hypoMag
    • hypoCa
  • Severe Bradycardia/AV Block
  • Hypothyroid
  • CVA (intraparenchymal)
  • Elevated intracranial pressure and Intracranial hemorrhage
  • MI
Treatment
•Monitored Bed
•Electrolytes, search for other sources
•Cardiology Consult-> Pacer/ICD
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  • Home
    • About Us
    • EM GuideWire
    • CMC Ed Masters
    • Ped EM Morsels
  • Basics
  • P Waves
    • Sinus
    • Not sinus
    • Absent
  • PR interval
    • Short PR
    • Prolonged PR
    • Variable PR
  • QRS
    • Wide
    • Axis >
      • LAD
      • RAD
    • Amplitude >
      • High Voltage
      • Low Voltage
      • Alternans
    • R Wave Progression
    • Pathological Q waves
  • ST Segments
    • ST Elevation
    • ST Depression
  • T Waves
    • Flat, Bifid, or Notched
    • Inverted
  • QT intervals
    • Prolonged QT
    • Short QT
  • Patterns
    • STEMI
    • Pulmonary Embolism
    • Ventricular Hypertrophy
    • Pulmonary Disease
    • ST-T Patterns
    • Electrolyte Abnormalities
    • Cases >
      • Case 1
      • Case 2
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  • Interpreter