ACEMg-mediated hearing preservation in cochlear implant patients receiving different electrode lengths (PROHEARING): study protocol for a randomized controlled trial

Table 6 Audiological tests per study visit. This table plots on which study visit a particular test is performed

Test	Condition	1–2 days preop	1–4 days postop	4 weeks postop	3, 6, 9 and 12 months post FF
Pure-tone, air-conduct	Unaided	X	X	X	X
Pure-tone, air-conduct	Unaided-contralateral	X		X	X
Pure-tone, bone-conduct	Unaided	X	X	X	X
Pure-tone, bone-conduct	Unaided-contralateral	X		X	X
OLSA training		X		X	X
OLSA in noise	Best aided (like) preop in implantable ear	X^a
OLSA in noise	EAS or ES + residual hearing			X	X
OLSA in noise	ES and ipsilateral closed ear canal			X	X
OLSA in noise	AS if activated			X	X
Warble	ES			X	X^b
Warble	AS if available			X	X^b

AS acoustic stimulation, EAS electric acoustic stimulation, ES electric stimulation, OLSA Oldenburger Satztest
^aOnly if hearing aids are available
^bOnly 3 months post first fitting