Hyaluronic acid viscoelastic medium as an aid for microsurgical venous anastomoses.

The thin-walled structure of veins leads them to stay collapsed during anastomoses, thereby the incidence of technical failures is more common than arterial anastomoses. In order to overcome this problem, we are introducing the use of viscoelastic material based on our experience on rats. Six rats were used in order to study the technical feasibility of the viscoelastic material during microsurgical vein anastomosis. End-to-end anastomoses were performed on rat jugular veins using 0.5-1 mL of the viscoelastic medium applied to the ends of the veins and surgical field under ×30 operating microscope magnification. Then 1.8% (n:3) and 3.0% (n:3) hyaluronic acid was used as a viscous medium in order to keep the vein lumens open during anastomosis. In conclusion, we have found that 3.0% hyaluronic acid viscoelastic medium facilitates microvenous anastomosis in rat. Studies involving human practice are needed for further evaluation of this technical refinement.

Meridian pedicle-based breast shaping in reduction mammaplasty: a technical modification.

BACKGROUND: We present a technical modification of vertical reduction mammaplasty which provides a reliable pedicle that can be used in large and highly ptotic breasts with confidence when compared to vertical mammaplasty techniques without sacrificing conical breast shape and projection, in contrast to Wise pattern reduction techniques. METHODS: Thirty-two patients under general anesthesia were operated on using this modification between 2008 and 2012. The surgical technique is as follows: after general anesthesia induction and local anesthetic infiltration, skin incisions are made according to preoperative drawings. The breast meridian is prepared by superior and inferior plication of the vertical pedicle, including two dermal and one central attachment to the chest wall. Lateral and medial tissue resections are performed, thus preparing medial and lateral pillars after skin undermining. The pillars are sutured to the meridian to reconstruct a projectile conical breast shape. Inverted-T scar (87.5%, n=28) and vertical scar (12.5%, n=4) were used for closure. RESULTS: All patients were satisfied with the outcome regarding breast projection, shape, and size at 12 (n=30) and 24 months (n=15) after surgery except for 12 cases that needed reoperations: 2 cases for bottoming out and lower pole deformity, 2 cases needed more reduction by liposuction or re-excision, and 8 scar revisions. CONCLUSION: Early and late results (up to 2 years) regarding breast shape and projection were found to be satisfactory while providing a reliable pedicle with less postoperative drainage. LEVEL OF EVIDENCE V: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .