Tissue plasminogen activator treatment of digital thrombosis in severe Raynaud's phenomenon--a case report.

A thirty-one-year-old woman with long-standing mixed connective tissue disease and severe obliterative vasculopathy of the digits developed digital thrombosis of the first three digits of the left hand after using an electric blow dryer. The digits remained cool, cyanotic, and painful for thirty-six hours before medical evaluation. She was given 100 mg recombinant tissue plasminogen activator (TPA) intravenously. Within one hour the blood flow to the digits returned, accompanied by severe intermittent vasospasm of the digits. The thumb did not necrose; however, the second and third digits required amputation. No improvement was noted in the patient's baseline Raynaud's phenomenon or digital pressures of the uninvolved digits after TPA treatment. This case documents the usefulness of TPA for digital thrombosis in the setting of vasculopathy of connective tissue disease. However, it does not support the utility of a single dose of TPA for severe Raynaud's phenomenon and recurrent digital ischemia in patients with connective tissue disease.