Vestibular and Balance Impairment Is Common in Children With Primary Ciliary Dyskinesia.

Abstract

Primary ciliary dyskinesia (PCD) is a rare genetic disorder that presents with a wide range of respiratory complaints. The most common otologic associated disorder is middle ear effusion. We ask if children with PCD suffer from vestibular impairment. Cross-sectional cohort study. Tertiary pediatric referral hospital. Children with confirmed PCD. All included participants were clinically assessed to be at baseline then basic demographics and medical histories were collected, including the specific genetic mutation these patients have. After which, all patients underwent two vestibular tests. The first was to assess their ability to stand on one foot with their eyes open and then with their eyes closed and the second was video head impulse test (vHIT). Ability standing on one foot with the eyes closed and vHIT. During this period, 25 children with PCD were recruited for the study. The mean age at recruitment was 11.26 years (4-18 yr). There were 11 women and 14 men. All patients were able to participate in both tests. Nineteen participants (76%) had vestibular impairment. Fifteen of them failed to stand on one foot with their eyes closed and six of 25 had abnormal vHIT. The most common involved gene was DNAH5 8/25 (32%) and it was associated with vestibular impairment in seven of eight participants (87.5%). The majority of children with PCD that we tested suffered from vestibular impairment that was previously undiagnosed. This potentially indicates that imbalance and vestibular pathology is under-diagnosed in children with PCD.