Revisiting the Abdominal Donor Site: Introducing a Novel Nomenclature for Autologous Breast Reconstruction

Topical Tranexamic Acid (TXA) Decreases Time to Drain Removal, Wound Healing Complications, and Postoperative Blood Loss in Autologous Breast Reconstruction: A Retrospective Study

Introduction: Drain placement is commonplace after many plastic surgery procedures to evacuate excess blood and fluid. Tranexamic acid (TXA) is an antifibrinolytic that has been shown to decrease bleeding and fluid production at surgical sites and can be administered orally, intravenously, and topically. The purpose of this study is to evaluate the effect of topical TXA on drain removal in abdominally based autologous breast reconstruction (ABABR). Methods: A retrospective chart review was performed on patients who underwent ABABR from August 2018 to November 2019. In 1 cohort, a 2.5% TXA solution was topically applied to the abdominal wall prior to closure. Drains were removed when output was less than 30 mL/day for 2 consecutive days. The primary outcome was days to drain removal. Secondary outcomes include daily inpatient drain output, postoperative hemoglobin levels, blood transfusions, and complications within 30 days postoperatively. Results: Eighty-three patients were included, with 47 in the control group and 36 in the TXA group. Drains were removed significantly earlier in patients who received TXA (16 days vs 23 days, P = .02). Additionally, significantly fewer patients required postoperative blood transfusions in the TXA group (2 vs 14, P = .005). Abdominal complications were fewer in the TXA group with significantly less wound healing complications (22% vs 49%, P = .01). There was no difference in flap loss or systemic thromboembolic events. Conclusion: Topical TXA use in ABABR results in earlier abdominal drain removal, less blood transfusions, and lower abdominal wound complications without an increased risk of flap loss or adverse patient outcomes.

Transverse division of the rectus abdominis muscle in deep inferior epigastric perforator flap elevation: A rescue technique to include more than one perforator

BACKGROUND

It is important to include as many perforators as possible in order to enhance the vascularity of a deep inferior epigastric perforator (DIEP) flap. However, the rectus muscle must be transected transversely, which prevents suturing and can cause a defect along the same line as the muscle-sparing procedure. When harvesting the DIEP flap, no specific method was suggested to solve these muscle defects. We found that by transecting the rectus muscle transversely, the muscle could be sutured in the tendinous area more easily while maintaining muscle function. The purpose of this study is to confirm the long-term recovery of the rectus abdominis muscle through the volume change after DIEP flap using this tendinous transection and suture method.

PATIENTS AND METHODS

A retrospective review of 28 patients who underwent unilateral breast reconstruction using a DIEP flap and the tendinous transection method for multiple perforators between May 2018 and April 2020 was conducted. The preoperative and postoperative volumes of the rectus abdominis muscle were estimated both the harvest and opposite sides.

RESULTS

The preoperative and postoperative muscle volumes from the harvest side were 50.08 ± 8.71 cm3 and 48.56 ± 8.61 cm3, respectively. The volume difference was 1.522 cm3 decrease, which was not statistically significant (p = .070). The preoperative and postoperative muscle volumes from the opposite side were 50.50 ± 8.15 cm3 and 50.08 ± 8.18 cm3, respectively. The volume difference was 0.434 cm3 increase and was not statistically significant (p = .064). Postoperative volume changes in the rectus muscle were not statistically significant on either side.

CONCLUSION

The tendinous transection method in the DIEP flap procedure did not significantly affect postoperative rectus muscle volume. Therefore, we expect this harvest method to allow DIEP flap reconstruction that includes multiple perforators and complete donor muscle recovery.

The nuances of abdominal free flap harvest: Technical and patient factors affecting abdominal donor site morbidity in autologous breast reconstruction

INTRODUCTION

Abdominal donor site morbidity after autologous breast reconstruction is common and often underreported. This work aims to compare prospectively collected technical details of the procedure and patient factors and their impact on the development of symptomatic and asymptomatic abdominal bulges (ASB and SB).

METHODS

A review of patients undergoing abdominal-based autologous breast reconstruction from May 2012 to October 2017 by two surgeons at a single institution was performed. Demographics, prior medical and surgical history, intraoperative data, and postoperative course were collected. Primary outcomes of interest were ASB or SB and wound healing complications.

RESULTS

Overall, 196 free flaps from 117 patients were included. The average follow-up was 1.9 ± 1.7 years. Thirteen (11.1%) patients developed ASB, and 13 (11.1%) patients developed SB. Patients with BMI ≥ 30, bilateral ms-TRAM reconstruction, and an onlay type of abdominal closure were 2×, 2.3×, and 8.1× more likely to develop a bulge, respectively (p = 0.017, p = 0.010, p = 0.049). Every one-point increase in BMI above 30 increased the odds of developing a bulge by 10.8%. Prior abdominal surgery increased the risk of SB by 7-fold (p = 0.017). The size of the harvested muscle, use of mesh, or nerve preservation did not affect the rate of bulge development.

CONCLUSION

High BMI, bilateral ms-TRAM, onlay type of abdominal closure, and prior abdominal surgery increase the risk of ASB and SB development to varying degrees, while several other operative variables did not seem to make a difference. Breast reconstruction patients can use this information for preoperative counseling and intraoperative decision-making.

Impact of Rectus Muscle Injury during Perforator Dissection on Functional Donor Morbidity after Deep Inferior Epigastric Perforator Flap Breast Reconstruction

This study aimed to assess the extent of rectus muscle damage in deep inferior epigastric perforator (DIEP) flap harvest and to evaluate its association with functional donor morbidity.

Should free deep inferior epigastric artery perforator flaps be considered a quality indicator in breast reconstruction?

Over the past several decades, technical advances in breast reconstruction have resulted in the development of flaps that are aimed at progressively decreasing abdominal wall morbidity. There is, however, ongoing controversy related to the superiority of deep inferior epigastric perforator (DIEP) flaps over muscle-sparing TRAM (MS-TRAM) flaps. Hence, the question remains unanswered as to which approach should be considered the standard of care, and more importantly, whether the rate of DIEP flap utilization should be considered a quality metric in breast reconstruction. In this review article, we examine the literature pertaining to abdominal free tissue transfer in breast reconstruction from both donor site and flap characteristics as well as the resultant complications and morbidity. The impact on the donor site remains a prevailing principle for autologous breast reconstruction; thus, must be adequately respected when classifying what is left behind following flap harvest. The most commonly used nomenclature is too simplistic. This, in turn, leads to inadequate incorporation of critical variables, such as degree of muscular preservation, fascial involvement, mesh implantation, and segmental nerve anatomy. Currently, there is insufficient evidence to support DIEP flap harvest as a quality indicator in breast reconstruction, as DIEP flap outcomes are not clearly superior when compared with MS-TRAM flaps.

Myth-Busting the DIEP Flap and an Introduction to the Abdominal Perforator Exchange (APEX) Breast Reconstruction Technique: A Single-Surgeon Retrospective Review

Supplemental Digital Content is available in the text.

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Background:

Anatomical variations in perforator arrangement may impair the surgeon’s ability to effectively avoid rectus muscle transection without compromising flap perfusion in the deep inferior epigastric artery perforator (DIEP) flap.

Methods:

A single surgeon’s experience was reviewed with consecutive patients undergoing bilateral abdominal perforator flap breast reconstruction over 6 years, incorporating flap standardization, pedicle disassembly, and algorithmic vascular rerouting when necessary. Unilateral reconstructions were excluded to allow for uniform comparison of operative times and donor-site outcomes. Three hundred sixty-four flaps in 182 patients were analyzed. Operative details and conversion rates from DIEP to abdominal perforator exchange (“APEX”) arms of the algorithm were collected. Patients with standardized DIEP flaps served as the controlling comparison group, and outcomes were compared to those who underwent abdominal perforator exchange conversion.

Results:

The abdominal perforator exchange conversion rate from planned DIEP flap surgery was 41.5 percent. Mean additional operative time to use abdominal perforator exchange pedicle disassembly was 34 minutes per flap. Early postsurgical complications were of low incidence and similar among the groups. One abdominal perforator exchange flap failed, and there were no DIEP flap failures. One abdominal bulge occurred in the DIEP flap group. There were no abdominal hernias in either group. Fat necrosis rates (abdominal perforator exchange flap, 2.4 percent; DIEP flap, 3.4 percent) were significantly lower than that historically reported for both transverse rectus abdominis musculocutaneous and DIEP flaps.

Conclusions:

This study revealed no added risk when using pedicle disassembly to spare muscle/nerve structure during abdominal perforator flap harvest. Abdominal bulge/hernia was nearly completely eliminated. Fat necrosis rates were extremely low, suggesting benefit to pedicle disassembly and vascular routing exchange when required.

CLINICAL QUESTION/LEVEL OF EVIDENCE:

Therapeutic, III.

Donor-site morbidities in 615 patients after breast reconstruction using a free muscle-sparing type I transverse rectus abdominis myocutaneous flap: a single surgeon experience

Transverse rectus abdominis myocutaneous flap is one of the most commonly used reconstruction tools after oncological mastectomy. However, post-operative donor-site morbidities remain an issue to be addressed. In this study, we retrospectively reviewed patients with either immediate or delayed breast reconstruction using a free muscle-sparing type I transverse rectus abdominis myocutaneous flap only, performed by a single surgeon, regarding the donor-site morbidity. From January 2012 to July 2017, the study subjects summed up to 615 patients, in a single institution. Preoperative planning and actual surgical techniques were outlined including the evaluation of the location of the perforators using a three-dimensional abdominal computed tomography angiography scan, minimal fascia sacrifice, beveled dissection and minimization of the tension on the central abdomen during closure. During a 1-year follow-up, a total of 33 patients (5.4%) were complicated with any donor-site morbidity. Those in need of secondary revision on their donor-sites accounted for 23 patients (69.7%). No factor was found statistically significant to increase the risk of donor-site morbidity. Many surgical techniques have been devised for closure of the donor-site in transverse rectus abdominis myocutaneous flap patients. And, several factors have been proposed as increasing the risk of donor-site morbidity. Although all the suggested predictive factors failed to prove its significance on increasing the risk, a set of preoperative planning and surgical techniques employed in our study has proven to be both safe and efficient in lowering the postoperative donor-site morbidities.