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. 2019 Dec 31;7(12):e2585. doi: 10.1097/GOX.0000000000002585

Table 3.

Univariate Analysis of Risk Factors for Ischemic Complications after Mastectomy with Immediate Breast Reconstruction Including the Mastectomy Flap Ischemia Risk Score

Variable Total Mastectomies (N) Mastectomies with Ischemic Complication (%) Unadjusted OR (95% CI) P
No. 45
Age
 <50 y 24 7 (29.2%) 1.8214 (0.5305–6.2540) 0.3407
 ≥50 y 21 9 (42.9%)
BMI
 <30 kg/m2 29 8 (27.6%) 2.6250 (0.7341–9.3864) 0.1377
 ≥30 kg/m2 16 8 (50.0%)
Current smoking
 Yes 2 1 (50.0%) 1.8667 (0.1089–32.0108) 0.6669
 No 43 15 (34.9%)
Therapeutic indication
 Yes 28 12 (42.9%) 2.4375 (0.6334–9.3803) 0.1950
 No 17 4 (23.5%)
Sentinel lymph node biopsy performed
 Yes 19 10 (52.6%) 3.7037 (1.0278–13.3467) 0.0453
 No 26 6 (23.1%)
Axillary lymph node dissection performed
 Yes 7 1 (14.3%) 0.2556 (0.0279–2.3406) 0.2273
 No 38 15 (39.5%)
Prior radiation
 Yes 6 3 (50.0%) 2.0000 (0.3534–11.3186) 0.4332
 No 39 13 (33.3%)
Prior chemotherapy
 Yes 18 6 (33.3%) 0.8500 (0.2427–2.9763) 0.7994
 No 27 10 (37.0%)
Adjuvant radiation
 Yes 7 2 (28.6%) 0.6857 (0.1171–4.0151) 0.6756
 No 38 14 (36.8%)
Adjuvant chemotherapy
 Yes 6 0 (0.0%) 0.1096 (0.0058–2.0819) 0.1410
 No 39 16 (41.0%)
Nipple-sparing mastectomy
 Yes 3 0 (0.0%) 0.2294 (0.0111–4.7313) 0.3404
 No 42 16 (38.1%)
Implant-based reconstruction
 Yes 29 11 (37.9%) 1.3444 (0.3678–4.9146) 0.6545
 No 16 5 (31.3%)
Acellular dermal matrix
 Yes 20 7 (35.0%) 0.6731 (0.1353–3.3474) 0.6286
 No 9 4 (44.4%)
Sternal notch–nipple distance ≥25 cm
 Yes 13 7 (53.8%) 2.1875 (0.5462–8.7612) 0.2689
 No 23 8 (34.8%)
Nipple–inframammary fold distance ≥10 cm
 Yes 15 6 (40.0%) 0.8889 (0.2312–3.4181) 0.8639
 No 21 9 (42.9%)
Mastectomy flap ischemia risk score >5
 Yes 9 5 (55.6%) 2.8409 (0.6378–12.6541) 0.1707
 No 36 11 (30.6%)
Mastectomy flap ischemia risk score >6
 Yes 6 4 (66.7%) 4.5000 (0.7229–28.0120) 0.1069
 No 39 12 (30.8%)
Mastectomy flap ischemia risk score >7
 Yes 4 3 (75.0%) 6.4615 (0.6120–68.2200) 0.1207
 No 41 13 (31.7%)

Bold text indicates a significant P value.

BMI, body mass index.