The effect of frailty on short‐term outcomes after head and neck cancer surgery

Objective To determine the relationship between frailty and comorbidity, in‐hospital mortality, postoperative complications, length of hospital stay (LOS), and costs in head and neck cancer (HNCA) surgery. Study Design Cross‐sectional analysis. Methods Discharge data from the Nationwide Inpatient Sample for 159,301 patients who underwent ablative surgery for a malignant oral cavity, laryngeal, hypopharyngeal, or oropharyngeal neoplasm in 2001 to 2010 was analyzed using cross‐tabulations and multivariate regression modeling. Frailty was defined based on frailty‐defining diagnosis clusters from the Johns Hopkins Adjusted Clinical Groups frailty‐defining diagnosis indicator. Results Frailty was identified in 7.4% of patients and was significantly associated with advanced comorbidity (odds ratio [OR] = 1.5[1.3–1.8]), Medicaid (OR = 1.5[1.3–1.8]), major procedures (OR = 1.6[1.4–1.8]), flap reconstruction (OR = 1.7[1.3–2.1]), high‐volume hospitals (OR = 0.7[0.5–1.0]), discharge to a short‐term facility (OR = 4.4[2.9–6.7]), or other facility (OR = 5.4[4.5–6.6]). Frailty was a significant predictor of in‐hospital death (OR = 1.6[1.1–2.4]), postoperative surgical complications (OR = 2.0[1.7–2.3]), acute medical complications (OR = 3.9[3.2–4.9]), increased LOS (mean, 4.9 days), and increased mean incremental costs ($11,839), and was associated with higher odds of surgical complications and increased costs than advanced comorbidity. There was a significant interaction between frailty and comorbidity for acute medical complications and length of hospitalization, with a synergistic effect on the odds of medical complications and LOS in patients with comorbidity who were also frail. Conclusion Frailty is an independent predictor of postoperative morbidity, mortality, LOS, and costs in HNCA surgery patients, and has a synergistic interaction with comorbidity that is associated with an increased likelihood of medical complications and greater LOS in patients with comorbidity who are also frail. Level of Evidence 2c. Laryngoscope , 128:102–110, 2018