How to select candidates for microvascular head and neck reconstruction in the elderly? Predictive factors of postoperative outcomes.

The proportion of elderly patients with head and neck cancer is increasing. However, predictive factors of postoperative outcomes are insufficiently explored in this population. In this study, we aimed to determine predictive factors of postoperative outcomes in elderly patients undergoing head and neck free-flap reconstructive surgery in order to determine criteria on which patient selection could be based. All patients aged 65 years or over who underwent head and neck free-flap reconstructive surgery at our institution, between 2000 and 2016, were included in this retrospective study. Predictive factors of postoperative outcomes were investigated in uni- and multivariate analysis. Two-hundred patients were included in the study. Older age (>70, >75 or > 80 yrs) had no significant impact on postoperative outcomes. Free flap failure local and general complications rates were 11%, 34% and 43%, respectively. Oromandibular reconstruction (p = 0.04) was significantly associated with free flap failure and salvage surgery (p = 0.04) with local complications. A high comorbidity level (Charlson Comorbidity Index score ≥ 4; p = 0.02) was associated with a higher risk of general complications. A G8 (Geriatric 8 questionnaire) score < 15 (p = 0.004), a high comorbidity level (Kaplan-Feinstein Index score ≥ 2; p = 0.04) and oromandibular reconstruction (p = 0.04) were associated with poor swallowing function at 6 months. Head and neck free flap reconstruction should be offered to fit (G8 score ≥ 15) elderly patients without severe comorbidities (KFI < 2 or CCI < 4), particularly when oral/pharyngeal soft-tissue reconstruction is planned.

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