Local heat preconditioning in skin sparing mastectomy: a pilot study.

Area of Science:

• Plastic Surgery
• Surgical Oncology
• Regenerative Medicine

Background:

• Local heat application up-regulates heat shock proteins (HSPs), like HSP-32.
• HSPs maintain capillary perfusion and enhance tissue tolerance to ischemia.
• Previous experimental data suggests reduced flap necrosis with local heat therapy.

Purpose of the Study:

• To evaluate the efficacy of local heat preconditioning before skin-sparing mastectomy and immediate breast reconstruction.
• To assess the impact of heat preconditioning on skin flap necrosis rates.
• To determine the effect on patient recovery and hospital stay.

Main Methods:

• Prospective non-randomized trial involving 50 high-risk patients (BMI >30, sternal-to-nipple distance >26 cm, or breast size >C-cup).
• Treatment group (n=25) applied local heat (43°C hot water bottle for 3x30 min cycles) 24h pre-surgery.
• Skin flap necrosis defined by need for debridement; Laser Doppler Imaging (LDI) assessed tissue vascularity.

Main Results:

• Skin flap necrosis occurred in 12% of the heat-preconditioned group versus 36% in the control group (p=0.047).
• LDI showed increased vascularity in heated breasts compared to non-heated breasts.
• Median inpatient stay was 4 days for the treatment group vs. 8 days for controls (p<0.001).

Conclusions:

• Local heat preconditioning is a simple, non-invasive method to reduce skin necrosis after mastectomy.
• This technique also significantly shortens hospital inpatient stay.
• Heat preconditioning shows promise for selected patients undergoing mastectomy and reconstruction.