Laboratory Studies
Basic presurgical laboratory studies include blood counts and chemistries. ECGs and chest x-rays are obtained according to pre-anesthesia guidelines.
Imaging Studies
Color-flow Doppler and CT angiography have been used for imaging of blood flow patterns in various perforator flaps. They may be of use when the integrity or pattern of blood flow within the flap is in question. [12, 13] However, these modalities are not typically employed in routine clinical practice.
A study by Davis et al indicated that CT angiography carried out prior to microsurgical breast reconstruction can be used to identify whether a DIEP flap will be at greater risk for postoperative venous congestion. The investigators reported that flaps found on CT angiography to have atypical venous connections between the deep and superficial systems, ie, those in which the connections were narrow, tortuous, or incomplete, had a five-fold risk of such congestion. [14]
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Presurgical markings with location of deep inferior epigastric perforator (DIEP) and superficial inferior epigastric artery (SIEA) signal points depicted (as determined by Doppler ultrasonography).
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Superficial inferior epigastric vessels dissected out.
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Presurgical superior gluteal artery perforator (SGAP) flap donor-site markings with location of SGAP signal points depicted on left (as determined by Doppler ultrasonography). Postsurgical donor site appearance clothed on right.
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Perforating branches of deep inferior epigastric system dissected out.
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Before and after right skin-sparing mastectomy for invasive ductal carcinoma with immediate deep inferior epigastric perforator (DIEP) flap reconstruction and left mastopexy.
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Before and after bilateral prophylactic skin-sparing mastectomy with immediate deep inferior epigastric perforator (DIEP) flap reconstruction in a patient positive for the BRCA gene.
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Before and after bilateral mastectomy for ductal carcinoma in situ (DCIS) with immediate deep inferior epigastric perforator (DIEP) flap reconstruction.
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Before and after reconstruction of defect resulting from right lumpectomy and radiation with superior inferior epigastric artery (SIEA) flap and left mastopexy for symmetry.
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Before and after delayed bilateral reconstruction with superior gluteal artery perforator (SGAP) flaps.
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Before and after superior gluteal artery perforator (SGAP) flap donor site (same patient as in previous image).
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Implant reconstruction with painful capsular contracture (left) and after implant removal with superior gluteal artery perforator (SGAP) flap reconstruction bilateral (right).
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Before and after superior gluteal artery perforator (SGAP) flap donor site (same patient as in previous image).
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Before and after delayed bilateral reconstruction with superior gluteal artery perforator (SGAP) flaps. Abdominal scar results from abdominoplasty performed at second stage surgery.
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Before and after superior gluteal artery perforator (SGAP) flap donor site (same patient as in previous image).
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Stacked DIEP flap.
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Lumbar perforator dissected out.