544 results
Thresholds for Transfusion of Platelets in Adults
Major surgery or invasive procedure, no active bleeding - 
≤
Transfusion of Platelets ... rarely) Stable, nonbleeding ... < 10 Stable, nonbleeding ... #Management #Platelets ... Plateletpheresis #Thresholds #NonBleeding
Indications for Transfusion of Platelets in Neonates

#Management #Peds #Pediatrics #Platelets #Transfusion #Plateletpheresis #Thresholds #NonBleeding #Surgery
Transfusion of Platelets ... Peds #Pediatrics #Platelets ... Plateletpheresis #Thresholds #NonBleeding
Indications for Transfusion
Packed RBCs
 • Hgb <7 g/dL or hematocrit <21% in a patient with uncompromised
hemoglobinopathy Platelets ... Prophylactically for platelet ... not transfuse platelets ... Platelet transfusions ... • Prophylaxis (nonbleeding
Inherited Qualitative Platelet Defects
Bernard-Soulier Syndrome
 • Defect of adhesion due to a lack of GP Ib/IX/V
Inherited Qualitative Platelet ... Single isolated platelets ... without platelet ... failure Grey Platelet ... • Absence of platelet
Platelet disorders and Aggregometry
Glanzmann Thrombasthenia
 • Defective aggregation to all agonists except ristocetin
 • Normal platelet,
Platelet disorders ... ristocetin • Normal platelet ... count and platelet ... • Platelet flow ... Usually normal platelet
Thrombocytosis - Differential Diagnosis
Platelet Count > 450
Reactive:
 • Anemia/blood loss (Fe deficiency)
 • Infection/Sepsis
 • Non-infectious
Differential Diagnosis Platelet ... Diagnosis #causes #Platelets
Idiopathic Thrombocytopenic Purpura 
Clinical:
 • Gingival 
 • Menorrhagia 
 • GI bleeding 
 • Intracranial
children) • Platelets ... extremely low platelet
Blood Product Components, Contents, Volume and Shelf Life

Whole blood (autologous or directed donations) - RBC and
WBC and platelets ... Hct 60% Platelet ... concentrate - Platelets ... Hct < .005) Platelet ... pheresis - Platelets
Pancytopenia - Differential Diagnosis Algorithm
 • 12-13 g/dL,
 • ANC < 1800/uL,
 • platelet < 150,000/uL

Initial
< 1800/uL, • platelet ... /uL Initial Workup ... Algorithm #hematology #workup
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Thrombocytosis - Elevated Platelet ... hematology for workup ... Thrombocytosis #Platelets