Potential role of electroencephalographic monitoring for diagnosis and treatment of local anesthetic systemic toxicity during general anesthesia: a case report

Abstract Background Local anesthetic systemic toxicity (LAST) is a rare but potentially life-threatening complication. Under general anesthesia, neurological signs are often masked, delaying diagnosis and increasing the risk of sudden cardiovascular collapse. Therefore, early detection methods are c...

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Main Authors: Ryo Wakabayashi, Seiichi Azuma, Saori Hayashi, Yuji Ueda, Masaki Iwakiri, Masaaki Asamoto, Kanji Uchida
Format: Article
Language:English
Published: SpringerOpen 2024-12-01
Series:JA Clinical Reports
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Online Access:https://doi.org/10.1186/s40981-024-00763-8
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author Ryo Wakabayashi
Seiichi Azuma
Saori Hayashi
Yuji Ueda
Masaki Iwakiri
Masaaki Asamoto
Kanji Uchida
author_facet Ryo Wakabayashi
Seiichi Azuma
Saori Hayashi
Yuji Ueda
Masaki Iwakiri
Masaaki Asamoto
Kanji Uchida
author_sort Ryo Wakabayashi
collection DOAJ
description Abstract Background Local anesthetic systemic toxicity (LAST) is a rare but potentially life-threatening complication. Under general anesthesia, neurological signs are often masked, delaying diagnosis and increasing the risk of sudden cardiovascular collapse. Therefore, early detection methods are critically needed. Case presentation A 48-year-old male patient (height: 182 cm, weight: 98 kg) underwent resection of a mediastinal goiter. He received 10 mL of 4% lidocaine for topical airway anesthesia and 20 mL of 1% lidocaine with 1:100,000 epinephrine for chest wall anesthesia. Thirty minutes after airway anesthesia, continuous theta waves appeared on the frontal electroencephalogram (EEG), which were enhanced following chest wall anesthesia. These waves transitioned into a repeating pattern and evolved into sharp periodic discharges. After administering 150 mL of 20% lipid emulsion, the EEG normalized. Conclusions This case highlights that EEG monitoring during general anesthesia may facilitate the early detection of LAST and provide real-time feedback on treatment efficacy.
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spelling doaj-art-31ebdc262df04f18b6155c4ab456db9c2024-12-29T12:12:43ZengSpringerOpenJA Clinical Reports2363-90242024-12-011011410.1186/s40981-024-00763-8Potential role of electroencephalographic monitoring for diagnosis and treatment of local anesthetic systemic toxicity during general anesthesia: a case reportRyo Wakabayashi0Seiichi Azuma1Saori Hayashi2Yuji Ueda3Masaki Iwakiri4Masaaki Asamoto5Kanji Uchida6Department of Anesthesiology and Pain Relief Center, The University of Tokyo HospitalDepartment of Anesthesiology and Pain Relief Center, The University of Tokyo HospitalDepartment of Anesthesiology and Pain Relief Center, The University of Tokyo HospitalDepartment of Anesthesiology and Pain Relief Center, The University of Tokyo HospitalDepartment of Anesthesiology and Pain Relief Center, The University of Tokyo HospitalDepartment of Anesthesiology and Pain Relief Center, The University of Tokyo HospitalDepartment of Anesthesiology and Pain Relief Center, The University of Tokyo HospitalAbstract Background Local anesthetic systemic toxicity (LAST) is a rare but potentially life-threatening complication. Under general anesthesia, neurological signs are often masked, delaying diagnosis and increasing the risk of sudden cardiovascular collapse. Therefore, early detection methods are critically needed. Case presentation A 48-year-old male patient (height: 182 cm, weight: 98 kg) underwent resection of a mediastinal goiter. He received 10 mL of 4% lidocaine for topical airway anesthesia and 20 mL of 1% lidocaine with 1:100,000 epinephrine for chest wall anesthesia. Thirty minutes after airway anesthesia, continuous theta waves appeared on the frontal electroencephalogram (EEG), which were enhanced following chest wall anesthesia. These waves transitioned into a repeating pattern and evolved into sharp periodic discharges. After administering 150 mL of 20% lipid emulsion, the EEG normalized. Conclusions This case highlights that EEG monitoring during general anesthesia may facilitate the early detection of LAST and provide real-time feedback on treatment efficacy.https://doi.org/10.1186/s40981-024-00763-8ElectroencephalogramElectrographic seizuresEpileptiform dischargesLocal anesthetic systemic toxicity
spellingShingle Ryo Wakabayashi
Seiichi Azuma
Saori Hayashi
Yuji Ueda
Masaki Iwakiri
Masaaki Asamoto
Kanji Uchida
Potential role of electroencephalographic monitoring for diagnosis and treatment of local anesthetic systemic toxicity during general anesthesia: a case report
JA Clinical Reports
Electroencephalogram
Electrographic seizures
Epileptiform discharges
Local anesthetic systemic toxicity
title Potential role of electroencephalographic monitoring for diagnosis and treatment of local anesthetic systemic toxicity during general anesthesia: a case report
title_full Potential role of electroencephalographic monitoring for diagnosis and treatment of local anesthetic systemic toxicity during general anesthesia: a case report
title_fullStr Potential role of electroencephalographic monitoring for diagnosis and treatment of local anesthetic systemic toxicity during general anesthesia: a case report
title_full_unstemmed Potential role of electroencephalographic monitoring for diagnosis and treatment of local anesthetic systemic toxicity during general anesthesia: a case report
title_short Potential role of electroencephalographic monitoring for diagnosis and treatment of local anesthetic systemic toxicity during general anesthesia: a case report
title_sort potential role of electroencephalographic monitoring for diagnosis and treatment of local anesthetic systemic toxicity during general anesthesia a case report
topic Electroencephalogram
Electrographic seizures
Epileptiform discharges
Local anesthetic systemic toxicity
url https://doi.org/10.1186/s40981-024-00763-8
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