26 results
Cannon A Waves
 • Caused by atrial contracting against a closed tricuspid valve
 • Atrioventricular dissociation
Cannon A Waves ... • Caused by atrial ... dissociation + retrograde atrial ... activation from SVT (e.g ... AWaves #diagnosis #cardiology
Cannon A waves during AVNRT on Physical Exam
In AVNRT, the atria and ventricles contract nearly simultaneously
In AVNRT, the atria ... EKG of the same ... to diagnose the case ... excludes other differentials ... PhysicalExam #JVP #Cardiology
Supraventricular Tachycardia (SVT) - Differential Diagnosis Framework and Management

Regular SVT: Sinus Tachycardia, AVNRT, AVRT, Atrial Flutter,
Tachycardia (SVT) - Differential ... , AVNRT, AVRT, Atrial ... semi-recumbent position ... Tachycardia #SVT #Differential ... #cardiology
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Control rate (e.g ... Treat underlying cause ... Treat underlying cause ... Tachycardia #Treatment #management ... #cardiology #algorithm
Widened Pulse Pressure - Differential Diagnosis and Pathophysiology

Pulse pressure is the difference between the systolic blood
Pulse Pressure - Differential ... of developing atrial ... mmHg developed atrial ... significantly positive ... #cardiology
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
(3) SVTs - atrial ... 200ms from longer pause ... #EKG #diagnosis ... electrocardiogram #cardiology ... #differential
Peri-operative Hyperthermia - Guidelines for Crises in Anaesthesia
If prolonged or ≥ 39 C this is a
amphetamines) Toxic: • Radiologic ... #Hyperthermia #Differential ... #Causes #Anesthesiology ... #Anesthesia #Checklist ... #Diagnosis #Management
Tachycardia - Differential Diagnosis and Management - Narrow vs Wide, Regular vs Irregular
Narrow - Regular:
Use P
Tachycardia - Differential ... Diagnosis and Management ... Positive deflection ... • Atrial Flutter ... #cardiology #wide
Increased Airway Pressure - Guidelines for Crises in Anaesthesia

Using these steps from start to end should
Airway • Check position ... blood gas, 12-lead ECG ... Airway #Pressure #Differential ... Intraoperative #Checklist ... #Diagnosis #Management
Hypotension - Guidelines for Crises in Anaesthesia

Hypotension is commonly due to unnecessarily deep anaesthesia, the autonomic
Airway • Check position ... and positioning (e.g ... #Hypotension #Differential ... Intraoperative #Checklist ... #Diagnosis #Management