[The DIEP Flap as Method of Choice in Breast Reconstruction - Results and Protocol for Succesful Reconstruction]. / Der DIEP Lappen als Standard in der autologen Brustrekonstruktion - Ergebnisse und Algorithmus zur erfolgreichen Rekonstruktion.

BACKGROUND: Autologous breast reconstruction is becoming increasingly important, especially in light of the increased rates of prophylactic mastectomies with BRCA mutations. Regarding the indications and complications between free TRAM and free DIEP flaps for autologous breast reconstruction the current data is not clear. MATERIALS AND METHODS: All patients who received an autologous breast reconstruction between January 2010 and January 2014 using free DIEP or free MS-2-TRAM flaps were included in the study. The choice of flap between DIEP and MS-2-TRAM was performed by a standardised algorithm with preoperative CT angiography, intraoperative evaluation of the flap perfusion and Doppler detection. The analysis took into account partial flap necrosis <20% and >20%), complete flap loss, flap necrosis and surgical revision of the anastomosis. RESULTS: The study considered 362 women who received a total of 419 free flaps for breast reconstruction. 66 patients received a bilateral reconstruction (52 double DIEPS, 9 DIEP and MS2 TRAM and 5 double MS2 TRAMs). The total flap loss was 0.24%. Partial necrosis <20% occurred in 0.72% (DIEP 0.82%, MS2 TRAM 0%), partial necrosis >20% in 0.72% (DIEP 0.69% MS2 TRAM 0.98%). One DIEP flap was lost (0.24%). After implementing our protocol the rate of MS-2-Tram flaps could be reduced to 10-15% of all autologous breast reconstruction procedures as compared to the years before. CONCLUSION: Through the application of the presented algorithm for breast reconstruction with free DIEP flap, such surgery is a safe treatment option if it is done at high frequency in a microsurgical centre. Flap loss and complications are not increased compared to MS2 TRAM flaps. The decision for the selection of the appropriate flap for breast reconstruction should be based on the presented algorithm in order to achieve secure and reproducible results.

Differential effects of pain and spatial attention on digit representation in the human primary somatosensory cortex.

Reorganization of primary somatosensory cortex subsequent to either reduced or enhanced peripheral input is well established. Recently, plastic changes following arm amputation in humans were shown to correlate with phantom limb pain. This raised the question whether spatial attention and pain may cause cortical reorganization in the absence of deafferentation. Using non-invasive neuroelectric imaging to study the digit representation in the human primary somatosensory cortex, we report a delayed shift of the representation of digits 2-3 due to pain on the digits 4-5, which outlasted the pain by several minutes. In contrast, reorganization during spatial attention was less pronounced, was seen almost immediately and only during the condition. These data indicate that spatial attention and pain without peripheral deafferentation cause cortical reorganization by different mechanisms. The differential time course of reorganizational effects observed at the cortex may be due to modulation of the lemniscal pathways by nociceptive input from the spinal cord dorsal horn.