Tinnitus Handicap Inventory
Observational cohort studies
One hundred seventy-three patients diagnosed with unilateral vestibular schwannoma operated via the retrosigmoid approach were included in a study from the People's Liberation Army General Hospital Beijing. All patients underwent relevant examinations and completed the Tinnitus Handicap Inventory scale before surgery and 6 months after surgery. The prognosis of tinnitus was evaluated according to the changes in THI.
Of the 129 preoperative tinnitus patients, postoperative tinnitus resolved in 12.4%, improved in 29.5%, remained unchanged in 28.6%, and worsened in 29.5%. 18.2% of 44 patients without preoperative tinnitus appeared new-onset tinnitus postoperatively. Thirty-six patients never had tinnitus. Patients with smaller tumor sizes (≤ 3 cm) were more likely to experience preoperative tinnitus. Younger patients and those with serviceable hearing preoperatively were more likely to report their tinnitus unchanged or worsened. A new onset of postoperative tinnitus in the preoperative non-tinnitus group was found in better preoperative hearing function.
70% of patients had persistent tinnitus after vestibular schwannoma resection. The tinnitus prognosis was influenced by age and preoperative hearing function. Tinnitus is a bothersome symptom and is often underestimated by doctors. Assessment of tinnitus is mandatory during the vestibular schwannoma management 1)