2617 results
Causes of Anemia with Normal Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Decreased WBCs
 - Decreased/NormaI
Causes of Anemia ... Macrocytes, Normal RBCs ... Spherocytes, RBC ... ) - Abnormal RBCs ... Diagnosis #Algorithm #Causes
Overall Approach to Anemia - Differential Diagnosis Algorithm

Blood Loss
 • Acute Bleed - Normocytic / Normochromic
/ Normochromic RBCs ... TIBC, Hypochromic RBCs ... Decreased RBC ... Disorder • RBC ... Diagnosis #Algorithm #Causes
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
Urinalysis >3 RBCs ... (proteinuria, RBC ... casts, dysmorphic ... RBCs)? ... Nephrology if cause
Several artifacts can cause significant and potentially misleading alterations to measured RBC parameters: 
1. Old samples
artifacts can cause ... alterations to measured RBC ... RBCs to swell, ... RBCs to shrink, ... a falsely low RBC
Causes of Anemia with elevated Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Normal Blood Smear
 •
Causes of Anemia ... Neutrophils - Low RBC ... Pernicious Anemia RBCs ... Cells, Normal WBCs ... Diagnosis #Algorithm #Causes
FAT RBC Mnemonic for Causes of Macrocytic Anemia
(MCV > 100)

F - Folate (Fetus) and B12 Deficiency
FAT RBC Mnemonic ... for Causes of Macrocytic ... synthesis for RBC ... Larger, immature RBCs ... FATRBC #Mnemonic #Causes
Plasmodium Falciparum Blood Smear.
Key features suggesting Plasmodium falciparum:
- extreme parasitemia
- normocytic RBCs (vivax, ovale prefer big
parasitemia - normocytic RBCs ... multiples per RBC ... P. falciparum causes ... human malaria cases
Internal Jugular Vein Rouleaux Flow on POCUS

Amazing video of a dilated IJV showing Rouleaux flow. Whenever
significantly, it causes ... the RBCs to clump ... echogenic as in this case ... for underlying cause
Causes of Hematuria - Differential Diagnosis Algorithm
Red blood cells on urine microscopy. Must exclude false positives
Causes of Hematuria ... Glomerular (Dysmorphic RBCs ... and/or RBC casts ... Diagnosis #Algorithm #Causes
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
Hematuria: 3 or more RBC ... hematuria: - RBC ... - Dysmorphic RBC ... disease Renal Causes ... Mass Ureteral Causes