19 results
Hypermagnesemia - Etiologies by Mechanism
Renal Failure 
Excessive Mg Administration 
 - Massive PO intake
Excessive IV Mg infusion ... (e.g. eclampsia ... Hypermagnesemia #Differential ... High #Magnesium #Table ... #Causes #Management
Hyperkalemia shortens repolarization; changes in the T wave provide the earliest clues to hyperpotassemia.
 - At
repolarization causes ... prolonged PR and QT ... sine wave (QRS-T fusion ... #ECG #Changes # ... Progression #Table
Approach to ECGs - Tachy/Bradyarrhythmias
Tachyarrhythmias - HR > 100
Wide
  (1) VT - DANGER
  (2)
Approach to ECGs ... 200ms from longer pause ... bradyarrhythmia #ECG ... #electrocardiogram ... #cardiology #differential
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
Hypertension - Differential ... ) or IV saline infusion ... #Hypertension #Differential ... #Screening #Workup ... #table
Hypotension - Guidelines for Crises in Anaesthesia

Hypotension is commonly due to unnecessarily deep anaesthesia, the autonomic
rate, rhythm, perfusion ... and positioning (e.g ... (eg steroid dependency ... #Hypotension #Differential ... Diagnosis #Management #Workup
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
Hypertension - Workup ... and Differential ... with previously stable ... #Hypertension #Workup ... #causes #Differential
Increased Airway Pressure - Guidelines for Crises in Anaesthesia

Using these steps from start to end should
should identify any cause ... rate, rhythm, perfusion ... blood gas, 12-lead ECG ... Airway #Pressure #Differential ... Diagnosis #Management #Workup
Ascites - Diagnostic Approach and Differential Diagnosis
The most common causes: cirrhosis, malignancy and heart failure. Approx
The most common causes ... more than one cause ... (e.g. cirrhosis ... carcinomatosis, HF, etc ... Jcortesizaguirr #Ascites #workup
Intraoperative Anaphylaxis - Guidelines for Crises in Anaesthesia
• Unexplained hypotension
• Unexplained bronchospasm (wheeze may be absent
arrest where other causes ... an adrenaline infusion ... alternate vasopressor (e.g ... as patient is stable ... Diagnosis #Management #Workup
Pulmonary Embolism on ECG 

Mid 30's female with chest pain/dyspnea.  Triage EKG (no prior).
Pulmonary Embolism on ECG ... Differential/diagnosis ... See thread for POCUS ... seen in 34% of cases ... #EKG #Electrocardiogram