37 results
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
Vaughan Williams Classification ... cells • Slows sinus ... rate and prolongs PR ... cells • Slow sinus ... #Classes #cardiology
Hypothermia on EKG
 • J (Osborn) waves
 • PR, QRS, and QT prolongation
 • Various bradyarrythmias
Osborn) waves • PR ... bradyarrythmias (e.g. sinus ... waves #EKG #ECG #electrocardiogram
Sinus Tachycardia Differential Algorithm

- Dr. Tom Fadial https://twitter.com/thame

#Sinus #Tachycardia #Differential #Algorithm #Diagnosis #Cardiology #Causes
Sinus Tachycardia ... Differential Algorithm ... twitter.com/thame #Sinus ... #Differential #Algorithm ... Diagnosis #Cardiology #Causes
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
DANGER (2) Sinus ... block 1º - long PR ... 200ms from longer pause ... successively longer PR ... EKG #diagnosis #electrocardiogram
Sinus pause/arrest vs Sinoatrial Block

#cardiology #diagnosis #ekg #ecg #electrocardiogram #sinuspause #sinoatrialblock
Sinus pause/arrest ... diagnosis #ekg #ecg #electrocardiogram
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
4 Variants of Sinus ... Arrhythmia Phasic Sinus ... Non-phasic Sinus ... The P wave and PR ... diagnosis #ekg #ecg #electrocardiogram
Summary of Heart Blocks
1st Degree Heart Block:
 • Prolonged PR >200ms (5 small squares).
 • Narrow
• Prolonged PR ... • Prolonged PR ... PR shorted after ... HeartBlocks #Types #Classification ... Diagnosis #EKG #electrocardiogram
WPW EKG after cardioversion of SVT

Here is the post-conversion ECG

The patient is now in Sinus Rhythm,
patient is now in Sinus ... The PR interval ... WPW #EKG #ECG #Electrocardiogram
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
Differential Diagnosis by Classification ... bradycardia • Sinus ... pauses • AV ... Differential #Diagnosis #Classification ... #Table #Causes
Premature atrial complex (PAC) - ECG Recognition
 • Prematurity and altered P wave morphology.
 • P
look like the sinus ... PAC will have a PR ... diagnosis #ekg #ecg #electrocardiogram