Free flaps
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1. Identify perforator perfusion zone in donor site prior to incision; select optimal perforator and design flap
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2. Confirm flap perfusion during dissection, testing and comparing different perforators
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3. Confirm flap perfusion after transfer
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4. Confirm patency of arterial and venous anastomoses
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5. Detect areas of venous congestion by re-imaging 5–20 min after administration of ICG; can be performed following flap dissection, transfer, and/or inset
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Pedicle flap
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1. Identify perforator perfusion zone in donor site prior to incision; design flap
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2. Evaluate arterial and venous perfusion after elevation of flap and prior to transfer
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3. After transfer and after inset, confirm arterial inflow and venous return
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Skin flap
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1. Evaluate perfusion prior to incision; design flap
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2. After dissection, confirm flap perfusion
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3. After transfer and inset, confirm perfusion of flap
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Mastectomy flap
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1. Following mastectomy, confirm integrity of vascular perfusion in mastectomy flaps; select delayed vs. immediate reconstruction; select implant vs. expander reconstruction
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2. Confirm perfusion after insertion of reconstructive modality; determine expander volume or implant size; determine skin paddle size
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3. If revisions made, confirm perfusion in flaps
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