. 2019 Oct 31;277(2):367–375. doi: 10.1007/s00405-019-05708-x

Table 2.

Summary of hearing preservation results according to PTA 125–500 Hz, PTA 125–1000 Hz and HEARRING criteria described by Skarzynski et al. [30]. a Early postoperative. b Final follow-up

A
Ears	Preop PTA_{125–500 Hz dB (HL)}	Postop PTA_{125–500 Hz dB (HL)}	Δ PTA _{125–500 Hz dB (HL)}	Hearing preservation	Preop PTA _{0.125–1 kHz dB (HL)}	Postop PTA _{0.125–1 kHz dB (HL)}	Δ PTA_{0.125–1 kHz dB (HL)}	Hearing preservation	Hearring (%)	Hearring	Postoperative audiogram (d)
1	48	60	12	Complete	51	64	13	Complete	94	Complete	93
2	73	87	14	Complete	78	90	12	Complete	55	Partial	41
3	60	73	13	Complete	61	76	15	Complete	90	Complete	3
4	65	80	15	Complete	69	84	15	Complete	64	Partial	62
5	52	62	10	Complete	61	71	10	Complete	83	Complete	48
6	73	83	10	Complete	80	90	10	Complete	55	Partial	27
7	77	87	10	Complete	78	89	11	Complete	58	Partial	89
8*	40	53	13	Complete	49	63	14	Complete	69	Partial	57
9*	42	53	11	Complete	56	64	8	Complete	90	Complete	83
10	73	75	2	Complete	80	83	3	Complete	82	Complete	31
11	68	75	7	Complete	73	80	7	Complete	79	Complete	37
12	13	15	2	Complete	31	33	2	Complete	98	Complete	30
13	43	77	34	Minimal	56	83	27	Partial	47	Partial	29
14	33	42	9	Complete	44	51	7	Complete	92	Complete	28
15	27	43	16	Partial	39	56	17	Partial	78	Complete	27
16	57	62	5	Complete	59	65	6	Complete	88	Complete	28
17	70	80	10	Complete	71	84	13	Complete	66	Partial	30
18	28	45	17	Partial	39	56	17	Partial	74	Partial	30
Mean	52	64	12	15/18	60	71	12	15/18	76	10/18	43

B
Ears	Preop PTA _{125–500 Hz dB (HL)}	Final PTA _{125–500 Hz dB (HL)}	Δ PTA _{125–500 Hz dB (HL)}	Hearing preservation	PTA _{0.125–1 kHz dB (HL)}	Final PTA _{0.125–1 kHz dB (HL)}	Δ PTA _{0.125–1 kHz dB (HL)}	Hearing preservation	Hearring (%)	Hearring	Follow-up (d)
1	48	87	39	Minimal	51	90	39	Minimal	29	Partial	779
2	73	73	0	Complete	78	79	1	Complete	55	Partial	434
3	60	62	2	Complete	61	64	3	Complete	95	Complete	854
4	65	67	2	Complete	69	70	1	Complete	64	Partial	436
5	52	60	8	Complete	61	70	9	Complete	87	Complete	784
6	73	87	14	Complete	80	93	13	Complete	42	Partial	587
7	77	85	8	Complete	78	88	10	Complete	63	Partial	482
8*	40	55	15	Complete	49	64	15	Complete	69	Partial	229
9*	42	50	8	Complete	56	66	10	Complete	69	Partial	363
10	73	78	5	Complete	80	85	5	Complete	90	Complete	660
11	68	73	5	Complete	73	78	4	Complete	74	Partial	608
12	13	17	3	Complete	31	35	4	Complete	95	Complete	388
13**	43	n/a	n/a	n/a	56	n/a	n/a	n/a	n/a	n/a	29
14	33	67	34	Minimal	44	70	26	Partial	62	Partial	969
15	27	50	23	Partial	39	65	26	Partial	63	Partial	462
16	57	65	8	Complete	59	69	10	Complete	76	Complete	403
17	70	77	7	Complete	71	79	24	Partial	97	Complete	1041
18	28	33	5	Complete	39	46	8	Complete	90	Complete	413
Mean	52	64	11	14/17	60	71	12	13/17	72	7/17	582

*Bilateral implantee; Hearing preservation: Complete Δ PTA ≤ 15 dB (HL); Partial Δ PTA ≤ 30 dB (HL); Minimal Δ PTA > 30 dB (HL) but reliably measurable

*Bilateral implantee; **Explantation after 356 days due to maladaptation; Hearing preservation: Complete Δ PTA ≤ 15 dB (HL); Partial Δ PTA ≤ 30 dB (HL); Minimal Δ PTA > 30 dB (HL) but reliably measurable