15 results
Hyperkalemia Differential Diagnosis Algorithm
R/O Pseudo-hyperkalemia:
 • Possible Lab error! Alwavs Repeat Blood sample!
 • Leukocytosis, Thrombocytosis:
• Possible Lab error ... TTKG should be high ... Diagnosis #Algorithm #causes ... #potassium #high
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Epidemiology and Biostatistics ... Affected by random error ... by systematic error ... true Type II (β) error ... #Epidemiology #Biostatistics
Hypotension - Guidelines for Crises in Anaesthesia

Hypotension is commonly due to unnecessarily deep anaesthesia, the autonomic
hypovolaemia or combined causes ... • Exclude high ... have made a drug error ... Pneumothorax and/or high ... o Endocrine cause
Systemic Glucocorticoid Dose Equivalents. 

Note: approximate equivalent dose is based on anti-inflammatory potency. Fludrocortisone is not
because of its high ... chemotherapy induced nausea ... (postoperative nausea ... Corticosteroid #Steroid #Conversion
Causes of HyperKalemia - Differential Diagnosis
Increased extracellular K+:
 • Tissue injury
 • Hemolysis
 • Rhabdomyolysis
 •
Causes of HyperKalemia ... glycosides • High ... transfusion • Error ... Differential #Diagnosis #Causes
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
PseudoHyperkalemia: • Lab error ... phlebotomy High ... differential #diagnosis #causes ... #potassium #high
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
PseudoHyperkalemia: • Lab error ... phlebotomy High ... differential #diagnosis #causes ... #potassium #high
Intraoperative  Bradycardia - Guidelines for Crises in Anaesthesia
Bradycardia in theatre should not be treated as
Guidelines for Crises ... have made a drug error ... Consider known drug causes ... Also consider: high ... Guidelines for crises
Intraoperative Cardiac Ischaemia - Guidelines for Crises in Anaesthesia

If the patient is unconscious, signs of cardiac
Guidelines for Crises ... flattening or inversion ... breathlessness, dizziness, nausea ... Have a high index ... Guidelines for crises
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
Causes of ST Segment ... replaced by T wave inversion ... Embolism: • T-wave inversion ... • Short QT, high ... voltage Other Causes