M. Hamdi et al., Deep inferior epigastric perforator flap in breast reconstruction: Experience with the first 50 flaps, PLAS R SURG, 103(1), 1999, pp. 86-95
Abdominal wall function is a major concern for plastic surgeons performing
breast reconstruction with. TRAM flaps. The deep inferior epigastric perfor
ator (DIEP) free flap spares the whole rectus abdominis muscle, includes sk
in and fat only, and therefore, preserves adequate abdominal wall competenc
e. Between January of 1995 and May of 1997, a total of 50 breast reconstruc
tions in 42 patients were performed by using the DIEP flap. Eight patients
had bilateral procedures. Five breast reconstructions were immediate and 45
were delayed. All patients were collected prospectively and no patients we
re excluded from this study. The average age of patients was 47 years (rang
e, 22 to 59 years) and the average weight was 65 kg (range, 51 to 103 kg).
Seventy percent of patients had one or more risk factors for TRAM flap reco
nstruction. The mean postoperative follow-up period was 13 months (range, 3
to 30 months). Twenty consecutive patients (17 single and 3 bilateral DIEP
flap breast reconstructions) within this group underwent evaluation of the
ir abdominal wall function preoperatively and then 3 and 6 months postopera
tively by using Lacote's muscle grading system. Average flap harvesting tim
e was 120 minutes and average blood loss was 420 cc. Total flap loss and pa
rtial necrosis occurred in one (2 percent) and three flaps (6 percent), res
pectively. Abdominal wound infection occurred in seven patients (17 percent
). Unfortunately, one patient died of adult respiratory distress syndrome o
n the seventh postoperative day. Fat necrosis was found in three flaps (6 p
ercent). Postoperative abdominal wall examination did not reveal any hernia
, but bulging was found in two patients (5 percent). All patients were able
to resume their daily activities. Abdominal wall function tests in the ser
ies of 20 patients showed that all patients had reached or even improved th
eir preoperative level of upper and lower rectus muscle function 6 months a
fter the operation. The external oblique muscles were the most affected by
the procedure of flap harvesting, but only two patients (10 percent) were f
ound to have a measurable impairment after 6 months. Patient satisfaction w
ith the reconstructed breast and the donor site was rated high. The free DI
EP flap is, therefore, a reliable and valuable method of breast reconstruct
ion. The donor site morbidity,vas decreased, and the more tedious flap diss
ection did not affect the overall outcome.