Objective: Comorbidities accompanying to cardiac disordersmight be as detrimental as the diseases themselves. While itis not common, comorbidities associated with inner ear functions may also be seen. This study was planned to investigateevaluation of hearing which also includes high frequencies,and the presence of vestibular and tinnitus symptoms in children with acute rheumatic fever (ARF), Kawasaki disease (KD)or who underwent open heart surgery (due to atrial septaldefect and/or ventricular septal defect, Tetralogy of Fallot).Methods: This study included a patient group including214 children patients diagnosed with cardiac disorders (116males, 98 females; mean age 9.70 [range 6-16]) and a control group including 44 healthy children who do not haveany kind of chronic disease (21 males, 23 females; mean age9.38 [range 6-16]). The subjects underwent hearing test withfrequencies between 250-20000 Hz, vestibular and tinnitussymptoms were evaluated by Symptom Questionnaire Forms.Results: Out of 214 patients in the patient group, 6 (2.8%)had hearing loss in pure tones, 25 (11.7%) had in highfrequencies, 35 (16.4%) had tinnitus symptoms, and 21 (9.8%)had vertigo symptoms. Hearing loss in high frequencies wasdetected in 11.7% of patients with ARF, in 22.7% of patientswith KD, and in 7.8% of patients who underwent open heartsurgery. The difference between KD patients and the controlgroup in terms of hearing loss was statistically significant(p=0.014). Out of 214 patients in the patient group, 4 (1.9%)had hearing loss in pure tones and high frequencies, vertigoand tinnitus symptoms.Conclusions: Our results suggest that some childhood cardiacdisorders can cause some changes in the inner ear, althoughthe exact cause is unknown. Perhaps, a detailed hearing andbalance examination should be a routine in a child diagnosedwith a cardiac disorders. We think it is necessary to work onmore comprehensive patient groups and tests in the future.