Superomedial Pedicle Breast Reduction: The Critical View of Safety
Bibliographic record
Abstract
Critical view of safety (CVS) was introduced among general surgeons in response to a sudden surge in biliary injuries associated with the increased use of laparoscopy.1 CVS was identified as a safe method for dissection and protection of the cystic duct and artery. A large case series after the implementation of CVS reported no bile duct injuries, suggesting a successful reduction of complications with the introduction of CVS.2 The authors introduce a similar concept regarding identification and protection of the superomedial pedicle during breast reductions for trainee education to avoid pedicle transection. Orlando and Guthrie3 introduced the superomedial pedicle as an alternative to superior pedicle breast reduction in 1975. This technique included incorporation of additional medial parenchyma for improved vascularity of the nipple–areola complex. The superomedial pedicle is widely used by plastic surgeons and has similar complication rates to both the superior and inferior pedicle technique.4 A retrospective review of 938 superomedial reduction mammaplasties reports low complication rates overall, but a 3% partial nipple necrosis complication rate exists.5 Prevention of nipple loss is multifaceted, and protection of the pedicle is of foremost importance. The proposed CVS in superomedial breast reduction can be used by both the novice and experienced plastic surgeon to ensure safe, efficient, and reproducible protection of the pedicle. To obtain the CVS, superomedial breast reduction is carried out in a standard fashion with Wise skin pattern. The pedicle is deepithelized and the breast skin and parenchyma are resected in an en bloc fashion. The superomedial pedicle must then be divided from the lateral breast pillar to facilitate rotation of the pedicle for final inset. During this step, CVS is used to prevent surgical errors. CVS is defined by three anatomic landmarks: superomedial pedicle, lateral pillar, and breast meridian (Fig. 1, left).Fig. 1.: (Left) Standard Wise pattern superomedial breast reduction with resection of skin and parenchyma before division of the superomedial pedicle and lateral pillar. (Right) The critical view of safety as defined by the superomedial pedicle, breast meridian, and lateral pillar. Dissection is carried out along the trajectory of the breast meridian. Illustration by Scott Holmes, CMI. Copyright Baylor College of Medicine.To define the CVS clearly, the surgeon uses an allis clamp to pull the pedicle upward and medially while the assistant uses an allis clamp to pull the lateral pillar in an upward and lateral direction to create tension over the breast meridian (Fig. 1, right). Division of the superomedial pedicle from the lateral pillar may then be carried out following the course of the breast meridian. [See Video (online), which demonstrates division of the superomedial pedicle from the lateral breast pillar using the critical view of safety. The surgeon uses an allis clamp to pull the pedicle upward and medially while the assistant uses an allis clamp to pull the lateral pillar in an upward and lateral direction to create tension over the breast meridian. Division of the superomedial pedicle from the lateral pillar may then be carried out following the course of the breast meridian.] Before division, the CVS should be agreed on in a time-out fashion. Use of CVS avoids dissection medially, which would threaten the pedicle, or laterally, which could result in unintentional violation of the skin or hollowing of the lateral breast. The surgeon should take care to reassess the trajectory over the breast meridian continuously. {"href":"Single Video Player","role":"media-player-id","content-type":"play-in-place","position":"float","orientation":"portrait","label":"Video.","caption":"This video demonstrates division of the superomedial pedicle from the lateral breast pillar using the critical view of safety. The surgeon uses an allis clamp to pull the pedicle upward and medially while the assistant uses an allis clamp to pull the lateral pillar in an upward and lateral direction to create tension over the breast meridian. Division of the superomedial pedicle from the lateral pillar may then be carried out following the course of the breast meridian.","object-id":[{"pub-id-type":"doi","id":""},{"pub-id-type":"other","content-type":"media-stream-id","id":"1_of1uf4uv"},{"pub-id-type":"other","content-type":"media-source","id":"Kaltura"}]} Implementation of CVS is a simple and reproducible way to protect the superomedial pedicle in breast reduction. CVS should be implemented by plastic surgeons to aid in trainee education, decrease preventable technical errors, and increase efficiency in the operating room. ACKNOWLEDGMENT The authors thank Scott Holmes, CMI, a member of the Michael E. DeBakey Department of Surgery at Baylor College of Medicine, for assistance with the figure. DISCLOSURE The authors have no financial interest to declare in relation to the content of this article.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.004 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".