72 results
Thrombocytosis - Differential Diagnosis
Platelet Count > 450
Reactive:
 • Anemia/blood loss (Fe deficiency)
 • Infection/Sepsis
 • Non-infectious
Reactive: • Anemia ... deficiency) • Infection ... Sepsis • Non-infectious ... causes #Platelets #hematology
Hemolytic Anemias - Differential Diagnosis Algorithm

Signs of anemia and hemolysis:
 • ↓ Haptoglobin
 • ↑ LDH
Hemolytic Anemias ... Algorithm Signs of anemia ... Hypersplenism, Infection ... #Hemolytic #Anemias ... Diagnosis #Algorithm #hematology
Causes of Hemolytic Anemia - Differential Diagnosis
Inherited
 • Membrane
 • Internal
    - Hemoglobin
Causes of Hemolytic Anemia ... Internal - Infectious ... #Hemolytic #Anemia ... Diagnosis #Causes #hematology
Pediatric Vomiting - Gastrointestinal and Systemic Causes - Differential Diagnosis Algorithm
Hepatobiliary:
 • Acute Hepatitis
 • Acute
Gastrointestinal - Acute: • Infectious ... Gastrointestinal - Acute: • Infectious ... Urinary Tract Infection ... Hemorrhage • Meningitis ... Ear): • Ear Infection
Reticulocyte Production Index = (Retic %) x (Hct / 45) / Maturation Factor
The maturation factor is
particular degree of anemia ... Index < 2: • Anemia ... (e.g. cancer, infection ... G6PD deficiency), Infections ... Production #Index #hematology
Fever Patterns - Differential Diagnosis Framework

Continuous Fever:
Temp > 38°C with only 1 degree fluctuation in 24
and bacterial infections ... hours • Viral infections ... • Rickettsiae infections ... Pyogenic/focal infection ... viral source Non-Infectious
C5-C9 Deficiency - Pathogenesis and Clinical Findings
Note:
 • Risk of invasive meningococcal disease is 1000-10000x higher
other gram (-) infections ... • Clinical meningitis ... pathogens Bacterial infection ... systemic Neisseria infection ... C5C9Deficiency #Complement #pathophysiology
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
→ Refer to hematology ... hemolysis, deficiency anemia ... TPO, TPO-RA • Infections ... : Chronic infections ... bacterial and viral infections
Altered Mental Status - Differential Diagnosis
 • Neurologic: Stroke, Cerebral hypoxia, Cerebral hemorrhage, Seizure, Trauma, TBI,
Electrolyte disturbance, Uremia ... Thyroid disease • Infectious ... Pneumonia, Sepsis, Meningitis ... Recreational drugs, Toxic ingestions
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Microangiopathic hemolytic anemia ... Mycoplasma pneumoniae infection ... spherocytosis) • Infections ... differential #diagnosis #hematology ... #anemia