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Flow diagram of recommendations for preoperative and postoperative management of the PV patient with HNC undergoing reconstruction surgery. CBC, complete blood count; FFT, free flap transfer; G-tube, gastrostomy tube; Hct, hematocrit; Hgb, hemoglobin; HNC, head and neck cancer; LLN, lower limit of normal; PLT, platelet; POD, postoperative day; pRBC, packed red blood cell; PT, prothrombin time; PTT, partial thromboplastin time; PV, polycythemia vera; VTE, venous thromboembolism.
