12 results
Causes of False Elevation and Reduction in HbA1c

== False Elevation ==
Decreased RBC turnover 
• Iron, B-12,
Causes of False ... Elevation == Decreased ... Hypertriglyceridemia • Uremia High ... blood loss • Hemolytic ... #Decrease #Diagnosis
Blood Product Transfusions One Pager Summary
Type and screen - determines blood type and detects in recipient
Transfusion Thresholds ... Causes purpura & ... TRALI): Leading cause ... High mortality. ... #diagnosis #management
Several artifacts can cause significant and potentially misleading alterations to measured RBC parameters: 
1. Old samples
falsely high Hgb ... Hemolysis causes ... PCV to decrease ... PCV and MCV to decrease ... #Echinocytes #BurrCells
Causes of HyperKalemia - Differential Diagnosis
Increased extracellular K+:
 • Tissue injury
 • Hemolysis
 • Rhabdomyolysis
 •
Causes of HyperKalemia ... Tissue injury • Hemolysis ... glycosides • High ... intake • Blood transfusion ... of injection Decreased
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
Causes purpura & ... TRALI): Leading cause ... High mortality. ... more likely to cause ... #diagnosis #management
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
- Differential Diagnosis ... phlebotomy High ... #differential #diagnosis ... #causes #potassium ... #high #nephrology
Hyperkalemia: Diagnostic algorithm
Decreased renal potassium excretion
 • Acute renal failure
 • Chronic renal failure
 • Drugs
Increased
Hyperkalemia: Diagnostic ... algorithm Decreased ... diet • Blood transfusion ... • Tumor lysis/hemolysis ... Normal, Renin High
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
- Differential Diagnosis ... phlebotomy High ... #differential #diagnosis ... #causes #potassium ... #high #nephrology
Causes of Hyperkalemia - Differential Diagnosis Framework
 • Cellular Shift:
   - Exercise
Causes of Hyperkalemia ... - Differential Diagnosis ... Crush injury, Hemolysis ... #Causes #potassium ... #high
Uncommon Causes of Noncardiogenic Pulmonary Edema (NCPE) - Differential Diagnosis Framework

High Altitude Pulmonary Edema:
 • Accumulation
- Differential Diagnosis ... Framework High ... • High-altitude ... massive blood transfusion ... #differential #diagnosis