Pectoralis Major Myocutaneous Advancement Flaps Research Articles

Abstract 13814: Combined Omental and Bilateral Pectoralis Major Flaps for Treatment of Thoracic Aortic Graft Infections

Introduction: Aortic graft infections have historically been managed through graft removal and replacement. However, coverage with vascularized tissue flaps may provide an effective alternative, particularly in patients who are not able to undergo extended extra-anatomic bypass procedures. Hypothesis: Here we describe our experience treating thoracic aortic graft infections with combined omental and bilateral pectoralis major myocutaneous (PMM) advancement flaps. Methods: All patients undergoing sternal wound treatment with PMM flaps by the senior author (JAA) at a high-volume cardiac surgery center from 1996-2023 were reviewed. Patients with evidence of aortic graft infection were included. Results: Complete data were available for 598 patients, 11 of whom had combined PMM and omental flaps mobilized for aortic graft infections. ASA score was >4 in 9/11 (81.9%). At the index cardiac surgery, 11/11 (100%) underwent aortic root repair/replacement, and 9/11 (81.9%) also underwent aortic valve repair/replacement. Indications in this group for flap surgery included culture-positive infection (8/11; 72.7%), dehiscence (5/11; 45.5%), drainage (7/11; 63.6%), and inability to close the sternotomy incision due to hemodynamic instability (5/11; 45.5%). During chest exploration, 7/11 (63.6%) underwent complete removal of the infected graft, compared to 4/11 (36.4%) who underwent graft-preserving washout and debridement. Immediate flap closure was performed in 4/11 (36.4%). Intraoperative mediastinal cultures were positive in 3/11 (27.3%). Post-operative complications included dehiscence (1/11; 9.1%), seroma (2/11; 18.2%), hematoma (1/11, 9.1%), abdominal hernia (1/11; 9.1%), and recurrent infection (1/11; 9.1%). One (9.1%) patient died within 30 days of sternal reconstruction from mitral valve failure and a tachyarrhythmia. None have undergone reoperation for flap-related complications, while one patient underwent elective resection due to aesthetic complaints. Conclusions: Low postoperative morbidity and mortality indicate that combined omental and pectoralis major flaps are a safe and effective treatment for aortic graft infections.

An Analysis of 400 Sternal Wound Reconstructions at a Single Institution: Bacterial Pathogens Vary With Time.

Sternal wound (SW) infection and dehiscence after median sternotomy from cardiac surgery remain challenging complications with high morbidity. Knowledge of common pathogen types and variance with time from cardiac surgery can simplify the choice of antibiotics while awaiting definitive culture results. Records of 505 patients undergoing SW reconstruction by the senior author from 1996 to 2018 at a high-volume cardiac surgery center were reviewed. The most common indications for reconstruction were SW infection and dehiscence. At surgery, all patients underwent removal of sternal hardware, thorough debridement, and closure with bilateral pectoralis major myocutaneous advancement flaps. Deep tissue and bone cultures were sent in nearly all cases. Patients were split into group 1 or group 2 based on timing of flap reconstruction after initial cardiac surgery: 0 to 30 days and longer than 30 days, respectively. Complete data were available for 400 SW procedures performed during this period. Group 1 included 203 patients, and group 2 had 197 patients, with a mean time to SW surgery of 16.3 and 138.1 days, respectively. Intraoperative cultures were positive in 147 of 203 (72.4%), and 122 of 197 (61.9%) patients, respectively. Forty-four patients grew polymicrobial cultures. There was a significant difference in culture positivity rates in the 2 groups (P = 0.0004). The most common bacteria cultured in group 1 was Staphylococcus epidermidis (54 of 203 vs 21 of 197; P < 0.0001), whereas methicillin-sensitive Staphylococcus aureus was most common in group 2 (15 of 203 vs 22 of 197; P = 0.23). Methicillin-resistant S. aureus was relatively common in both groups (17 of 203 vs 21 of 197; P = 0.50). Although not statistically significant, Pseudomonas, Klebsiella, and Candida were all found in a higher percentage of patients in group 2 (p = 0.11, 0.20, 0.20). Microbial species cultured in SW flap reconstruction vary over time. Staphylococcus epidermidis is the most common infectious agent in patients having reconstruction within 30 days of cardiac surgery, whereas methicillin-sensitive S. aureus is most common after 30 days. The trend toward a higher incidence of Gram-negative and fungal organisms after 30 days may indicate a need for broader initial anti-infective coverage in this patient group. Awareness of these pathogen patterns can better inform antibiotic selection while awaiting culture data.

Asymmetric Pectoralis Major Myocutaneous Advancement Flaps for Osteomyelitis after Cardiac Surgery

Asymmetric Pectoralis Major Myocutaneous Advancement Flaps for Osteomyelitis after Cardiac Surgery

Sternal Wound Reconstruction Made Simple

Summary:Sternal wounds and associated infections represent a complex reconstructive problem in a highly morbid patient population. Through strict adherence to excellent plastic surgical principles, this process can be simplified, allowing safe and effective wound closure. Emphasis is placed on thorough debridement, hardware removal, obtaining adequate tissue cultures, and finally, appropriate flap closure. In most cases, pectoralis major myocutaneous advancement flaps provide excellent coverage while eliminating dead space and providing sternal compression. Secondary flap options, such as the omental flap or rectus abdominis muscle, may occasionally be necessary. This article will provide an overview and simplified approach to sternal wound reconstruction.

Management of Sternal Wounds by Limited Debridement and Partial Bilateral Pectoralis Major Myocutaneous Advancement Flaps in 25 Patients

Because sternal wound complications after sternotomy can be life threatening and often occur in very sick patients, optimal management of these complications remains an important topic. To decrease postoperative morbidity and shorten the recovery period, the senior author (J.A.A.) sought a less invasive approach to sternal debridement and flap closure in carefully selected patients. The purpose of this study was to evaluate the effectiveness of this approach by obtaining specific outcomes data from a series of patients treated with this less invasive method. Of the most recent 174 sternal wounds treated by the senior author, 25 underwent limited debridement and partial bilateral pectoralis major advancement flaps. The charts of these 25 patients were reviewed and analyzed. In the 25 patients who underwent limited debridement, there were no mortalities intraoperatively or during the 30-day postoperative period. Six patients (24%) experienced complications after debridement, including 1 recurrent sternal wound infection, 1 partial wound dehiscence, 1 seroma, 1 hematoma, and 1 wound edge necrosis requiring revision. Mean length of hospitalization after the procedure was 10 days, compared with 30 days (P = 0.0001) as previously reported with full debridement (Plast Reconstr Surg 2004; 114:676). Mean estimated intraoperative blood loss was reduced from 331 mL during full debridement to 93 mL (P < 0.0001) with limited debridement (Plast Reconstr Surg 2004; 114:676). There was no increase in postoperative morbidity (24 % vs 13 %, P = 0.2117). The authors advocate limited sternal debridement and partial bilateral pectoralis major myocutaneous advancement flaps in patients with limited wounds and partially or fully healed sternums. We demonstrate that the procedure is effective but less invasive than complete debridement, reduces operative time and blood loss, and shortens length of hospitalization.

Manuseio em um estágio de esternotomia infectada com avanço bilateral de flap miocutâneo do peitoral maior

To assess the results of single-stage treatment of infected sternotomy wounds using bilateral pectorals major myocutaneous advancement flaps. Between January 2000 and July 2007, 1972 heart surgeries with median transesternal thoracotomy were performed. Thirteen (0.65%) patients presented wound infections and dehiscence after sternotomy. To treat those patients we adopted exclusively single-stage management, drainage, early intervention and immediate wounds closure using bilateral pectoralis major myocutaneous advancement flaps to the medium line of the sternum. Two patients with superficial wounds infection and other two who underwent torsion adjustment of the steel wire were not included in this study. There was one death in the 30-day postoperative period. There was no intraoperative death. Four patients needed additional surgical intervention to drain residual seroma or local infection. There was total resolution of the sternal infection in 12 patients. The authors recommend the single-stage early management of sternotomy infected wounds with debridement, drainage and immediate closure of the wound using bilateral pectoralis major myocutaneous advancement flaps to the medium line of the sternum. The procedure is effective and may contribute to decrease the morbidity.

Management of sternal wounds with bilateral pectoralis major myocutaneous advancement flaps in 114 consecutively treated patients: refinements in technique and outcomes analysis.

Because life-threatening sternal wound complications can occur following sternotomy, the optimal management of sternal wound infections remains an important topic. To decrease morbidity following operative treatment of these patients, the authors made a number of refinements in their treatment protocol over the past several years, particularly with regard to the extent of débridement, method of flap apposition, and management of drains. The purpose of this study was to obtain specific outcomes data by reviewing a large series of patients treated by a single surgeon. In this series of 114 consecutive sternal wounds treated by the senior author (Ascherman), patients were managed almost exclusively with débridement and immediate closure with bilateral pectoralis major myocutaneous advancement flaps. There were no intraoperative deaths. The 30-day perioperative mortality rate was 7.9 percent, with only one death directly related to sternal infection. Nineteen patients (16.7 percent) experienced postoperative morbidity, including partial wound dehiscences (5 percent), skin edge necrosis (5 percent), and seromas (3.5 percent). The authors advocate single-stage management of complicated sternal wounds with immediate débridement and bilateral pectoralis major myocutaneous advancement flaps. The procedure is rapid and effective. Refinements in technique have significantly lowered morbidity.

Simple pectoralis major myocutaneous advancement flaps for closure after sternal wound dehiscence

Between October 1994 and March 1996, 14 consecutive patients with a wound dehiscence after median sternotomy for cardiac surgery were treated with pectoralis major myocutaneous advancement flaps. After thorough sternal wound debridement, the sternal edges were contoured to create a shallow defect. This was to enable the obliteration of dead space between the mediastinum and the flaps. The pectoralis muscle was then elevated off the chest wall, its humeral attachment, the thoraco-acromial pedicle and the connection with the skin were left intact. Next, the bilateral myocutaneous flaps were advanced medially and approximated to each other in the midline. The mean operation time was 140 min and the mean follow-up time was 10 months. Four patients developed minor complications. The advantage of this technique is its simplicity and the reduction in mean operation time.

Closure of infected sternal wounds with a unilateral rectus abdominis muscle flap in addition to bilateral pectoralis major myocutaneous advancement flaps

We have recently added to our regimen a unilateral rectus abdominis muscle flap to cover the lower sternum and adjacent soft tissues, in addition to bilateral pectoralis major myocutaneous advancement flaps for closure of infected sternal wounds. Twenty patients underwent this procedure for closure of infected sternal wounds after initial debridement at our institutions. There were no intraoperative deaths in this series, but three patients died of other medical conditions. Two patients developed hematomas and one developed recurrent sternal wound infection after surgery; two had superficial wound infections and five had minor wound problems (i.e., skin edge necrosis). All surviving patients (17/20, 85%) had healed sternal wounds with normal chest contour and there were no instances of flap necrosis, sternal wound dehiscence, or abdominal wall hernia during the follow-up (18–60 months). Based upon our experience, we recommend a unilateral rectus abdominis muscle flap in addition to bilateral pectoralis major myocutaneous advancement flaps for selected patients with infected sternal wounds. This approach provides reliable soft tissue coverage with acceptable morbidity and mortality in this high-risk patient population.

Secondary sternal repair following median sternotomy using interosseous absorbable sutures and pectoralis major myocutaneous advancement flaps

A consecutive series of 19 patients were treated for median sternotomy dehiscence by secondary sternal closure with interosseous absorbable sutures and superimposed pectoralis major myocutaneous advancement flaps. These patients were selected for this treatment only on the basis of the quality and quantity of remaining bone stock after debridement. Using this technique there have been no failures of primary therapy with a zero 30-day mortality rate. All patients have achieved good functional and aesthetic results with mechanically stable sternums, wounds confined to the chest and elimination of sepsis. This technique has the advantages of being simple, safe and relatively quick and avoids many of the inherent complications and disadvantages of other techniques and flaps commonly used in the management of this complication.

Single-stage treatment of sternal wound complications in heart transplant recipients in whom pectoralis major myocutaneous advancement flaps were used

Treatment of sternal wound complications is controversial, particularly in immunosuppressed heart transplant recipients. Regardless of the severity of infection, we combine immediate, aggressive débridement with bilateral pectoralis major myocutaneous advancement flaps in a single procedure. Compared with management with pectoralis major turnover flaps or distant pedicled muscle flaps, treatment of these sternal wounds with pectoralis major myocutaneous advancement flaps is simpler and quicker and provides better aesthetic results. Furthermore, because pectoralis major myocutaneous flaps are based on the thoracoacromial arteries, whether or not the internal mammary arteries have previously been harvested for coronary grafts is irrelevant. Twenty consecutive heart transplant recipients with sternal wound complications were treated with this technique. No intraoperative or perioperative deaths occurred. The morbidity rate was 30%, with seroma treated by needle aspiration in four patients (20%) being the most common complication. Only one patient had a postoperative wound infection. All patients had excellent functional and aesthetic results.

Single-Stage Management of 74 Consecutive Sternal Wound Complications with Pectoralis Major Myocutaneous Advancement Flaps

The optimal management of sternal wound complications remains controversial. Since 1985, we have utilized a combination of immediate, aggressive debridement with simultaneous repair using bilateral pectoralis major myocutaneous advancement flaps, regardless of the degree of infection. As compared with the use of distant pedicled muscle flaps or pectoralis major turnover flaps, the management of complicated sternal wounds with immediate pectoralis major myocutaneous advancement flaps provides an effective yet simpler, quicker method of management with improved aesthetic results. In addition, basing the pectoralis major myocutaneous flaps on the thoracoacromial arteries eliminates the need for intact internal mammary arteries, valuable since the latter are increasingly used for coronary grafts. Seventy-four consecutive patients, 17 (23 percent) of whom were immunosuppressed heart transplant recipients, have been managed with this procedure. There were no intraoperative deaths. The 30-day perioperative mortality rate was 9 percent (7 of 74), with only 1 death related to persistent sepsis. The morbidity rate was 39 percent, with the most common complication being seroma managed by needle aspiration (18 of 74, 24 percent). The aesthetic and functional results have been uniformly excellent.

Reconstruction following dehiscence of median sternotomy

Dehiscence of a median sternotomy wound results in significant morbidity and mortality. These wounds are classified into 3 types according to the time of presentation from the original cardiac procedure and the appearance of the wound. The classification gives an indication of the degree of debridement necessary and whether flap reconstruction is required. We describe a series of 54 flaps in 41 patients. These included 27 pectoralis major myocutaneous advancement flaps, 12 pectoralis muscle turnover flaps, 6 rectus abdominus muscle flaps and 9 omental flaps. There was partial loss of one flap. The mortality rate of 8.6% compares favourably with the alternative procedures of open debridement and packing, or closed irrigation.

Reconstruction of the Infected Median Sternotomy Wound

Infection of a median sternotomy incision may result in a large, unsightly, unstable, and potentially fatal wound. We report on a series of 18 patients who were treated during the past six years with muscle flap closure for this difficult wound problem. We describe the evolution of our current preferred techniques and the results we have achieved with them. Patient risk factors and hospital course are discussed. Before definitive flap closure, all patients were treated with aggressive debridement of the bone and cartilage involved. Our first 4 patients were treated with pectoralis major myocutaneous rotation flaps. Since 1982, our procedure of choice has been to use a rectus abdominis muscle flap covered with either chest skin advancement flaps or, for deeper wounds, bilateral pectoralis major myocutaneous advancement flaps. The current technique makes possible an excellent cosmetic result with no functional deficit, and it lends good stability to the chest wall. We continue to use pectoralis flaps if there is reason to believe the blood supply to the rectus has been compromised.

Management of Chronic Sternal Osteomyelitis

The management of 2 patients in whom chronic sternal osteomyelitis developed after apparently uncomplicated coronary artery bypass operations is described. Each patient had become totally disabled because of chronic, draining sinus tracts. Eradication of the infection required total sternectomy and excision of all infected costal cartilage. Subsequent reconstruction was accomplished by using bilateral pectoralis major myocutaneous advancement flaps without any maneuvers to stabilize the anterior chest wall. Both patients have resumed full activity and have returned to work with only minimal residual compromise of pulmonary function.