18 results
Tachycardia - Differential Diagnosis Table - Wide vs Narrow, Regular vs Irregular

Regular Rhythm - Narrow Complex
Differential Diagnosis Table ... • ST vs SVT (AVNRT ... whether AF is cause ... Differential #Diagnosis #Table ... Irregular #causes
Supraventricular Tachycardia EKG

Here’s a great ECG case of a 50-year-old lady who presented with palpitations

Her heart
case of a 50-year-old ... Is it wide or narrow ... computer thinks it’s wide ... @EM_RESUS #AVRT ... #ECG #Electrocardiogram
Treatment of Stable Narrow-Complex Tachycardia
Regular Rhythm:
 • Attempt vagal maneuvers
 • Give adenosine 6 milligrams IV
Treatment of Stable ... Converts - Probably AVnRT ... Control rate (e.g ... Treat underlying cause ... Treat underlying cause
Peri-operative Hyperthermia - Guidelines for Crises in Anaesthesia
If prolonged or ≥ 39 C this is a
maintained fever CAUSES ... Sepsis (→ 3-14) e.g ... Allergic reaction / anaphylaxis ... #Differential #Causes ... #Anesthesiology
Intraoperative Anaphylaxis - Guidelines for Crises in Anaesthesia
• Unexplained hypotension
• Unexplained bronchospasm (wheeze may be absent
Intraoperative Anaphylaxis ... arrest where other causes ... alternate vasopressor (e.g ... as patient is stable ... #Anesthesiology
Shock - Differential Diagnosis by Classification
Reflex Syncope 
 - Vasovagal syncope
   • Prolonged standing
- Medication side ... effect (e.g. αblockers ... - Medication side ... Classification #Table ... #Causes
Hypotension - Guidelines for Crises in Anaesthesia

Hypotension is commonly due to unnecessarily deep anaesthesia, the autonomic
pressure as a cause ... and positioning (e.g ... ischaemia → 3-12 o Anaphylaxis ... (eg steroid dependency ... #Differential #Anesthesiology
Common Vasopressors and Inotropes
Norepinephrine (NE)
 - Indication: Distributive shock (1st line for septic shock), Cardiogenic shock
(mild ↑CO) - Side ... is not desired (e.g ... is not desired (e.g ... Bradyarrhythmias, Some cases ... Inotropes #comparison #table
Shock - Differential Diagnosis Framework
MAP = CO x SVR
Hypovolemic (↓ Intravascular volume):
 • Hemorrhage, dehydration due
findings based on cause ... Sepsis. neurogenic, anaphylaxis ... warm extremities, wide ... Differential #Diagnosis #table
Increased Airway Pressure - Guidelines for Crises in Anaesthesia

Using these steps from start to end should
should identify any cause ... surgery related cause ... blood gas, 12-lead ECG ... Bronchospasm → 3-4 o Anaphylaxis ... #Differential #Anesthesiology