Abstract
OBJECTIVE: To investigate the use of transtympanic electrocochleography (TT-ECochG) analyzed on-line by a detector strategy software that made possible automatic extraction of TT-ECochG components intraoperatively in real-time domain. PATIENTS: Fifteen patients with cerebellopontine angle tumor among 50 patients were included in this study. INTERVENTION: All subjects were operated on via middle fossa or retrosigmoid approach. Pure-tone average (PTA) was measured at 0.5, 1.0, and 2.0 kHz, and calculations were performed before and after surgery. Auditory function was monitored intraoperatively via TT-ECochG, and analyzed data were displayed on-line. MAIN OUTCOME MEASURES: TT-ECochG changes in morphology were described. Postoperative PTA elevation level correlated with TT-ECochG morphology changes occurring intraoperatively. RESULTS: Analyzed on-line, TT-ECochG data were displayed as first negative peak of compound action potential amplitude and latency in time domain every 3 to 5 seconds. A good correlation between postoperative PTA elevation and TT-ECochG morphology changes was showed (Spearman rank test, R = +0.93; t(N-2) = 9.00; p < 0.0001). CONCLUSION: TT-EcochG seemed to effectively mirror even minimal changes in auditory function during intraoperative monitoring in real-time domain. Developed strategy of on-line analysis makes the intraoperative hearing status assessment faster and easier.
| Original language | English |
|---|---|
| Pages (from-to) | 541-545 |
| Number of pages | 5 |
| Journal | Otology and Neurotology |
| Volume | 28 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jun 1 2007 |
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Keywords
- Cerebellopontine angle tumor surgery
- Electrocochleography
- Hearing preservation
- Intraoperative monitoring of hearing
ASJC Scopus subject areas
- Otorhinolaryngology
- Neuroscience(all)
Cite this
Intraoperative monitoring of hearing during cerebellopontine angle tumor surgery using transtympanic electrocochleography. / Morawski, Krzysztof F.; Niemczyk, Kazimierz; Bohorquez, Jorge; Marchel, Andrzej; Delgado, Rafael E.; Ozdamar, Ozcan; Telischi, Fred F.
In: Otology and Neurotology, Vol. 28, No. 4, 01.06.2007, p. 541-545.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Intraoperative monitoring of hearing during cerebellopontine angle tumor surgery using transtympanic electrocochleography
AU - Morawski, Krzysztof F.
AU - Niemczyk, Kazimierz
AU - Bohorquez, Jorge
AU - Marchel, Andrzej
AU - Delgado, Rafael E.
AU - Ozdamar, Ozcan
AU - Telischi, Fred F
PY - 2007/6/1
Y1 - 2007/6/1
N2 - OBJECTIVE: To investigate the use of transtympanic electrocochleography (TT-ECochG) analyzed on-line by a detector strategy software that made possible automatic extraction of TT-ECochG components intraoperatively in real-time domain. PATIENTS: Fifteen patients with cerebellopontine angle tumor among 50 patients were included in this study. INTERVENTION: All subjects were operated on via middle fossa or retrosigmoid approach. Pure-tone average (PTA) was measured at 0.5, 1.0, and 2.0 kHz, and calculations were performed before and after surgery. Auditory function was monitored intraoperatively via TT-ECochG, and analyzed data were displayed on-line. MAIN OUTCOME MEASURES: TT-ECochG changes in morphology were described. Postoperative PTA elevation level correlated with TT-ECochG morphology changes occurring intraoperatively. RESULTS: Analyzed on-line, TT-ECochG data were displayed as first negative peak of compound action potential amplitude and latency in time domain every 3 to 5 seconds. A good correlation between postoperative PTA elevation and TT-ECochG morphology changes was showed (Spearman rank test, R = +0.93; t(N-2) = 9.00; p < 0.0001). CONCLUSION: TT-EcochG seemed to effectively mirror even minimal changes in auditory function during intraoperative monitoring in real-time domain. Developed strategy of on-line analysis makes the intraoperative hearing status assessment faster and easier.
AB - OBJECTIVE: To investigate the use of transtympanic electrocochleography (TT-ECochG) analyzed on-line by a detector strategy software that made possible automatic extraction of TT-ECochG components intraoperatively in real-time domain. PATIENTS: Fifteen patients with cerebellopontine angle tumor among 50 patients were included in this study. INTERVENTION: All subjects were operated on via middle fossa or retrosigmoid approach. Pure-tone average (PTA) was measured at 0.5, 1.0, and 2.0 kHz, and calculations were performed before and after surgery. Auditory function was monitored intraoperatively via TT-ECochG, and analyzed data were displayed on-line. MAIN OUTCOME MEASURES: TT-ECochG changes in morphology were described. Postoperative PTA elevation level correlated with TT-ECochG morphology changes occurring intraoperatively. RESULTS: Analyzed on-line, TT-ECochG data were displayed as first negative peak of compound action potential amplitude and latency in time domain every 3 to 5 seconds. A good correlation between postoperative PTA elevation and TT-ECochG morphology changes was showed (Spearman rank test, R = +0.93; t(N-2) = 9.00; p < 0.0001). CONCLUSION: TT-EcochG seemed to effectively mirror even minimal changes in auditory function during intraoperative monitoring in real-time domain. Developed strategy of on-line analysis makes the intraoperative hearing status assessment faster and easier.
KW - Cerebellopontine angle tumor surgery
KW - Electrocochleography
KW - Hearing preservation
KW - Intraoperative monitoring of hearing
UR - http://www.scopus.com/inward/record.url?scp=34447628057&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34447628057&partnerID=8YFLogxK
U2 - 10.1097/mao.0b013e3180577919
DO - 10.1097/mao.0b013e3180577919
M3 - Article
C2 - 17529854
AN - SCOPUS:34447628057
VL - 28
SP - 541
EP - 545
JO - Otology and Neurotology
JF - Otology and Neurotology
SN - 1531-7129
IS - 4
ER -