Avatrombopag for the Treatment of Thrombocytopenia in Adults Scheduled for a Surgical Procedure

Inclusion Criteria: * Men and women greater than or equal to 18 years of age; * A mean baseline platelet count between: * 50 × 10\^9/L and \<100 × 10\^9/L for non-chronic liver disease participants * 50 × 10\^9/L and \<75 × 10\^9/L for participants with chronic liver disease; * Participant is scheduled to undergo operations to critical sites (eg, eye surgery, neurosurgery) or operations with a high risk of bleeding (eg, major abdominal surgery), or, in the opinion of the Investigator, would otherwise require a pre-operative platelet transfusion to prevent bleeding Exclusion Criteria: * Participant with a history of arterial or venous thrombosis within 6 months of baseline; * Participant with known portal vein blood flow velocity rate \<10 cm/second or previous portal vein thrombosis within 6 months of baseline; * Participant plans to have a platelet transfusion or plans to receive blood products containing platelets within 7 days of the Baseline Visit; * Use of erythropoietin-stimulating agents; * Participant has a known medical history of genetic prothrombotic syndromes; or * Participant has abnormal hemoglobin levels or prothrombin time/international normalized ratio