Demographics
Between the years 2007 and 2017, 191 patients aged 9 months to 17 years (mean 3.54 years), underwent 213 procedures, accounting for 260 cochlear implants at SUMC. Of these, 69 procedures (32%) were simultaneous bilateral cochlear implants. Etiology was y hereditary in 80%; two patients were operated for post-meningitis deafness; four procedures were for inner-ear congenital malformations (2 for incomplete partition type and 2 with an enlarged vestibular aqueduct). Of all procedures, 88 were performed on males (41%) and 125 on females (59%). One hundred procedures were performed on Bedouin Arab patients (63%) and 72 on no Bedouin (usually Jewish) patients (34%). Demographic and clinical characteristics are summarized inTable 1 .
Patients with IOHversus patients without IOH
Out of 213 procedures, 10 patients developed IOH and the rest were defined as belonging to the non–intra-operative hyperthermia (NIOH) group. No significant differences were observed between the groups in as far as age, gender, ethnicity, number of CI surgeries (one versus more than one), or the cause of deafness (Table 1 ).