IOH versus POF
POF was observed following 31 procedures. Of these, 2 were from the 10-patient IOH group; no infections were found that could explain the fever and no antibiotic treatment was initiated in those patients. Neither of these two patients suffered from early post-operative complications. The rest of the patients with POF (29 patients) were in the NIOH group (14.3%). In four patients there was a clear etiology for the POF (pharyngitis, gastroenteritis, periorbital cellulitis or dysentery). Five of the 29 patients showed post-operative complications, which included swelling (three patients), otitis media (one patient), and acute bacterial meningitis (one patient). According to multivariate analysis, IOH during CI surgery is not associated with the occurrence of POF (p = 0.923; Table 2 ).