Algorithms in Medicine @MatthewHoMD
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Matthew Ho, MD PhD https://twitter.com/MatthewHoMD
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Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Thrombocytosis - Elevated ... Platelet Count ... - Differential Diagnosis ... Algorithm Peripheral ... Diagnosis #Algorithm
Pulmonary Function Testing (PFT) Interpretation Algorithm

Restrictive Lung Disease:
 • Chest wall or neuromuscular disorders
 • Interstitial
Pulmonary Function ... Testing (PFT) Interpretation ... Algorithm Restrictive ... Lung Disease Obstructive ... #Algorithm #diagnosis
Approach to Leukocytosis - Differential Diagnosis Algorithm

Features of hematologic malignancy:
 • Symptoms: B-symptoms, bruising/bleeding, fatigue/weakness, immunosuppression
Leukocytosis - Differential ... Diagnosis Algorithm ... anemia, ↑ MCV, ↑/↓ platelets ... #Diagnosis #Algorithm ... #hematology #WBC
Approach to Elevated aPTT / PT - Differential Diagnosis Algorithm

aPTT: Intrinsic / Final
PT: Extrinsic / Final

By
Approach to Elevated ... aPTT / PT - Differential ... Diagnosis Algorithm ... aPTT #PT #INR #Algorithm ... #Hematology #differential
Thrombocytopenia - Differential Diagnosis Algorithm

Decreased production:
 • Bone marrow suppression
 • Bone marrow failure
 • Bone
Thrombocytopenia - Differential ... Diagnosis Algorithm ... Thrombocytopenia #Differential ... #Diagnosis #Algorithm ... #hematology #platelets
Pancytopenia - Differential Diagnosis Algorithm
 • 12-13 g/dL,
 • ANC < 1800/uL,
 • platelet < 150,000/uL

Initial
Pancytopenia - Differential ... Diagnosis Algorithm ... < 1800/uL, • platelet ... #Diagnosis #Algorithm ... #hematology #workup
Approach to Thrombotic Microangiopathy (TMA) - Differential Diagnosis and Management Algorithm

Suspected TMA: Unexplained thrombocytopenia + MAHA
Microangiopathy (TMA) - Differential ... and Management Algorithm ... hemosiderin, Hepatic function ... Diagnosis #Management #Algorithm ... #hematology
Erythrocytosis - Polycythemia Differential Diagnosis Algorithm

Elevated Hemoglobin:
 • Males: Hb > 16.5 g/dL/HCT ≥ 49%
 •
- Polycythemia Differential ... Diagnosis Algorithm ... Elevated Hemoglobin ... #Diagnosis #Algorithm ... #hematology