CC BY-NC-ND 4.0 · Laryngorhinootologie 2019; 98(S 02): S309
DOI: 10.1055/s-0039-1686356
Georg Thieme Verlag KG Stuttgart · New York

One-time bilateral cochlear implantation: Is the blood loss tolerable for young patients?

C Cuny
1  HNO Universitätsklinikum Frankfurt am Main, Frankfurt/M.
B Trier
1  HNO Universitätsklinikum Frankfurt am Main, Frankfurt/M.
T Stöver
1  HNO Universitätsklinikum Frankfurt am Main, Frankfurt/M.
› Author Affiliations
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Publication History

Publication Date:
23 April 2019 (online)



The care of young patients with bilateral deafness with cochlear implants has established itself as the standard procedure worldwide. The one-time bilateral cochlear implantation has been performed in many clinics for years without complications. Nevertheless, there are reasons listed to speak against a one-time care, especially the expected blood loss.


In a period of 3 years, a total of 32 children in the University Hospital Frankfurt am Main were treated with a cochlear implant on both sides. The preoperative hemoglobin (Hb) value was compared with the values after unilateral implantation.


It was found that a single-stage bilateral implantation was successfully performed on 25 children. In 7 children, the second side was implanted over time (21.8%). The mean preoperative Hb value was 11.84 g/dl. After the first implantation, the value was 10.52 g/dl (t-test: p = 0.001). If the blood loss was above this value (Hb < 10 g/dl), the immediate second implantation was defered. The average operation time of the bilateral implantation was 191 min.


In the case of one-step cochlear implantation, there is significant blood loss in the surgical treatment of the first side, but in more than 75% of cases, the second side can be treated in the same procedure. However, it remains an obligatory duty to control the loss of blood before the beginning of the other side.