Table 1. Characteristics of the Two Types of Heparin-Induced Thrombocytopenia

Table 1. Characteristics of the Two Types of Heparin-Induced Thrombocytopenia

Characteristic	Type I	Type II
Frequency	10 to 20%
Timing of onset	2 to 3 days	5 to 10 days
Nadir platelet count	100,000/µl	10,000 to 20,000/µl
Antibody mediated	No	Yes
Thromboembolic sequelae	None	30 to 80%
Treatment	Observe Patient	Discontinue heparin by all routes, select other anticoagulation, adjunctive therapy