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Plata-Bello J, Pérez-Lorensu PJ, Saponaro-González Á, Darias-Delbey B, Fariña-Jerónimo H, Domínguez-Lorenzo JM, Ucelay-Gómez R, González-Tabares EF, Ibrahim-Achi Z, Guerrero-Ramírez CS, Padrón-Encalada CE, Pérez-Burkhardt JL. Can NIRS be a surrogate indicator of elective shunt in carotid endarterectomy? A single-center observational retrospective study says no. J Clin Monit Comput 2024; 38:631-638. [PMID: 38064136 DOI: 10.1007/s10877-023-01114-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 11/23/2023] [Indexed: 06/11/2024]
Abstract
BACKGROUND Neuromonitoring during carotid endarterectomy (CEA) under general anesthesia is desirable and may be useful for preventing brain ischemia, but the selection of the most appropriate method remains controversial. PURPOSE To determine the effectiveness of near infrared spectroscopy (NIRS) compared to multimodality intraoperative neuromonitoring (IONM) in indicating elective shunts and predicting postoperative neurological status. METHODS This is a retrospective observational study including 86 consecutive patients with CEA under general anesthesia. NIRS and multimodality IONM were performed during the procedure. IONM included electroencephalography (EEG), somatosensory evoked potentials (SSEPs) and transcranial motor-evoked potentials (TcMEPs). Sensitivity, specificity, and positive and negative predictive values (PPV and NPV) were calculated for each neuromonitoring modality. RESULTS NIRS presented a sensitivity and a specificity for detecting brain ischemia of 77.7% and 89.6%, respectively (PPV = 46.6% and NPV = 97.2%). In contrast, a 100% sensitivity and specificity for multimodality IONM was determined (PPV and NPV = 100%). No significant difference (in demographical or clinical data) between "true positive" and "false-positive" patients was identified. Among the methods included in multimodality IONM, EEG showed the best results for predicting postoperative outcome after CEA (PPV and NPV=100%). CONCLUSION NIRS is inferior to multimodality IONM in detecting brain ischemia and predicting postoperative neurological status during CEA under general anesthesia.
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Affiliation(s)
- Julio Plata-Bello
- Department of Neurosurgery, Hospital Universitario de Canarias, Carretera Ofra s/n La Cuesta. CP 38320. La Laguna, S/C de Tenerife, Santa Cruz de Tenerife, Spain.
| | | | | | - Beneharo Darias-Delbey
- Department of Anesthesiology, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
- Department of Vascular Surgery, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
| | - Helga Fariña-Jerónimo
- Department of Neurosurgery, Hospital Universitario de Canarias, Carretera Ofra s/n La Cuesta. CP 38320. La Laguna, S/C de Tenerife, Santa Cruz de Tenerife, Spain
| | | | - Roberto Ucelay-Gómez
- Department of Anesthesiology, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
| | | | - Zena Ibrahim-Achi
- Department of Anesthesiology, Hospital Universitario de Canarias, Santa Cruz de Tenerife, Spain
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Jain B, Rahim FO, Thirumala PD, McGarvey ML, Balzer J, Nogueira RG, van der Goes DN, de Havenon A, Sultan I, Ney J. Cost-benefit analysis of intraoperative neuromonitoring for cardiac surgery. J Stroke Cerebrovasc Dis 2024; 33:107576. [PMID: 38232584 DOI: 10.1016/j.jstrokecerebrovasdis.2024.107576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 12/25/2023] [Accepted: 01/11/2024] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Intraoperative neuromonitoring (IONM) can detect large vessel occlusion (LVO) in real-time during surgery. The aim of this study was to conduct a cost-benefit analysis of utilizing IONM among patients undergoing cardiac surgery. METHODS A decision-analysis tree with terminal Markov nodes was constructed to model functional outcome, as measured via the modified Rankin Scale (mRS), among 65-year-old patients undergoing cardiac surgery. Our cost-benefit analysis compares the use of IONM (electroencephalography and somatosensory evoked potential) against no IONM in preventing neurological complications from perioperative LVO during cardiac surgery. The study was performed over a lifetime horizon from a societal perspective in the United States. Base case and one-way probabilistic sensitivity analyses were performed. RESULTS At a baseline LVO rate of 0.31%, the mean attributable lifetime expenditure for IONM-monitored cardiac surgeries relative to unmonitored cardiac surgeries was $1047.41 (95% CI, $742.12 - $1445.10). At a critical LVO rate of approximately 3.67%, the costs of both monitored and unmonitored cardiac surgeries were the same. Above this critical rate, implementing IONM became cost-saving. On one-way sensitivity analysis, variation in LVO rate from 0% - 10% caused lifetime costs attributable to receiving IONM to range from $1150.47 - $29404.61; variations in IONM cost, percentage of intervenable LVOs, IONM sensitivity, and mechanical thrombectomy cost exerted comparably minimal influence over lifetime costs. DISCUSSION We find considerable cost savings favoring the use of IONM under certain parameters corresponding to high-risk patients. This study will provide financial perspective to policymakers, clinicians, and patients alike on the appropriate use of IONM during cardiac surgery.
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Affiliation(s)
- Bhav Jain
- Stanford University School of Medicine, Stanford, CA, United States; Massachusetts Institute of Technology, Cambridge, MA, United States
| | | | - Parthasarathy D Thirumala
- Department of Neurological Surgery and Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Michael L McGarvey
- Department of Neurology, University of Pennsylvania, Philadelphia, PA, United States
| | - Jeffrey Balzer
- Department of Neurological Surgery and Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Raul G Nogueira
- Department of Neurological Surgery and Neurology, University of Pittsburgh Medical Center, Pittsburgh, PA, United States; UPMC Stroke Institute, Pittsburgh, PA, United States
| | - David N van der Goes
- Department of Economics, University of New Mexico, Albuquerque, NM, United States
| | - Adam de Havenon
- Department of Neurology, Yale University, New Haven, CT, United States
| | - Ibrahim Sultan
- Division of Cardiac Surgery, Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, PA, United States; Heart and Vascular Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - John Ney
- Department of Neurology, Boston University School of Medicine, Boston, MA, United States; West Haven VA Medical Center, West Haven, CT, United States.
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Diogo C, Na D, Sujijantarat N, Matouk C, Callahan B. Diagnostic accuracy of intraoperative neuromonitoring in transcarotid artery revascularization. J Neurointerv Surg 2024:jnis-2023-021282. [PMID: 38378240 DOI: 10.1136/jnis-2023-021282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 01/31/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND In recent years, transcarotid artery revascularization (TCAR) has emerged as a safe and effective alternative to carotid artery stenting. While intraoperative neuromonitoring (IONM) techniques such as electroencephalogram (EEG) and somatosensory evoked potentials (SSEPs) are often employed during TCAR, there is limited research on their diagnostic accuracy. METHODS The authors retrospectively reviewed a multi-institutional IONM database of TCAR procedures performed with EEG and SSEP monitoring. A total of 516 TCAR procedures were included in this study. Significant changes in EEG and/or SSEPs, surgeon's interventions, resolution of significant changes, and immediate postoperative neurological outcome were documented. Sensitivity, specificity, positive and negative predictive values were calculated. RESULTS The incidence of intraoperative onset new neurologic deficit was 0.4%. Significant changes in EEG and/or SSEPs occurred in 5.4% of the cases. Of the cases with IONM alerts, 78.5% returned to baseline with a surgical or hemodynamic intervention. From the cases with unresolved IONM alerts, 33.3% woke up with a new neurological deficit. The overall sensitivity and specificity for IONM was 100% and 99.2%, respectively. The positive predictive value was 33.3% and the negative predictive value was 100%. CONCLUSIONS IONM during TCAR offers high sensitivity and specificity in predicting postoperative outcome. Patients with resolved IONM alerts had immediate neurological outcomes that were comparable to those who had no IONM alerts.
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Affiliation(s)
- Cinira Diogo
- Physiology and Neurobiology, University of Connecticut, Storrs, Connecticut, USA
- Nuvasive Clinical Services, Columbia, Maryland, USA
| | - Doohwan Na
- Nuvasive Clinical Services, Columbia, Maryland, USA
| | | | - Charles Matouk
- Neurosurgery, Yale University, New Haven, Connecticut, USA
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Al-Qudah AM, Ta'ani OA, Thirumala PD, Sultan I, Visweswaran S, Nadkarni N, Kiselevskaya V, Crammond DJ, Balzer J, Anetakis KM, Shandal V, Subramaniam K, Subramanium B, Sadhasivam S. Role of Intraoperative Neuromonitoring to Predict Postoperative Delirium in Cardiovascular Surgery. J Cardiothorac Vasc Anesth 2024; 38:526-533. [PMID: 37838509 DOI: 10.1053/j.jvca.2023.09.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/20/2023] [Accepted: 09/09/2023] [Indexed: 10/16/2023]
Abstract
OBJECTIVE Postoperative delirium (POD) can occur in up to 50% of older patients undergoing cardiovascular surgery, resulting in hospitalization and significant morbidity and mortality. This study aimed to determine whether intraoperative neurophysiologic monitoring (IONM) modalities can be used to predict delirium in patients undergoing cardiovascular surgery. DESIGN Adult patients undergoing cardiovascular surgery with IONM between 2019 and 2021 were reviewed retrospectively. Delirium was assessed multiple times using the Intensive Care Delirium Screening Checklist (ICDSC). Patients with an ICDSC score ≥4 were considered to have POD. Significant IONM changes were evaluated based on a visual review of electroencephalography (EEG) and somatosensory evoked potentials data and documentation of significant changes during surgery. SETTING University of Pittsburgh Medical Center hospitals. PARTICIPANTS Patients 18 years old and older undergoing cardiovascular surgery with IONM monitoring. MEASUREMENTS AND MAIN RESULTS Of the 578 patients undergoing cardiovascular surgery with IONM, 126 had POD (21.8%). Significant IONM changes were noted in 134 patients, of whom 49 patients had delirium (36.6%). In contrast, 444 patients had no IONM changes during surgery, of whom 77 (17.3%) patients had POD. Upon multivariate analysis, IONM changes were associated with POD (odds ratio 2.12; 95% CI 1.31-3.44; p < 0.001). Additionally, baseline EEG abnormalities were associated with POD (p = 0.002). CONCLUSION Significant IONM changes are associated with an increased risk of POD in patients undergoing cardiovascular surgery. These findings offer a basis for future research and analysis of EEG and somatosensory evoked potential monitoring to predict, detect, and prevent POD.
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Affiliation(s)
- Abdullah M Al-Qudah
- Center of Clinical Neurophysiology, Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Omar Al Ta'ani
- Center of Clinical Neurophysiology, Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Parthasarathy D Thirumala
- Center of Clinical Neurophysiology, Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA.
| | - Ibrahim Sultan
- Department of Cardiothoracic Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Shyam Visweswaran
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Neelesh Nadkarni
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Victoria Kiselevskaya
- Center of Clinical Neurophysiology, Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Donald J Crammond
- Center of Clinical Neurophysiology, Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Jeffrey Balzer
- Center of Clinical Neurophysiology, Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Katherine M Anetakis
- Center of Clinical Neurophysiology, Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Varun Shandal
- Center of Clinical Neurophysiology, Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Kathirvel Subramaniam
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Balachundhar Subramanium
- Department of Anesthesiology, Critical Care & Pain Management, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Senthilkumar Sadhasivam
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
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Pinto V, Liebsch M. Technical note: pre-positioning lower limb SSEP during semi-sitting positioning in posterior fossa surgery- does it matter? J Clin Monit Comput 2023; 37:1627-1633. [PMID: 37351761 DOI: 10.1007/s10877-023-01041-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 05/30/2023] [Indexed: 06/24/2023]
Abstract
Intra-operative monitoring has been a crucial tool in modern neurosurgery as it allows to optimize surgical outcome whilst reducing neurological deficits. Somatosensory evoked potentials are routinely monitored in most spinal and brain surgeries due to providing invaluable information regarding the functional integrity of sensory pathways. The use of this neurophysiological technique is particular useful when positioning patients in semi-sitting position during posterior fossa surgery. However, there is general agreement within the intra-operative neuromonitoring community that either upper or lower limb SSEPs monitoring typically suffice. Nonetheless, we report a case study of a patient in whom lower limb SSEPs were independently affected from upper limb SSEPs during positioning. In this respect, we suggest that both upper and lower limb SSEPs monitoring should be considered during semi-sitting positioning in patients undergoing posterior fossa surgery.
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Affiliation(s)
- Vania Pinto
- Neurological Institute, Cleveland Clinic Abu Dhabi, Al Maryah Island, P.O. Box 112412, Abu Dhabi, UAE.
| | - Marina Liebsch
- Neurosurgery Department, Tübingen University Hospital, Tübingen, Germany
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Intagliata A, Rountree K, Bath J. Thrombosis or vasospasm: The utility of intraoperative neuromonitoring during TCAR. Vascular 2023; 31:694-698. [PMID: 35226570 DOI: 10.1177/17085381221080002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Transcarotid artery revascularization (TCAR) has become more prevalent as a treatment modality for carotid stenosis. Many centers perform TCAR without any adjunctive neuromonitoring, for example, somatosensory-evoked potential (SSEP) and electroencephalogram (EEG). METHODS We present a case of transcarotid artery revascularization (TCAR) performed with concomitant somatosensory-evoked potential (SSEP) and electroencephalogram (EEG) neuromonitoring in the setting of concerning intraoperative angiographic images. RESULTS TCAR was undertaken for a 58 year-old man presenting with symptomatic left carotid stenosis and right ICA occlusion. Based on his comorbidities, pre-existing conditions, and the need for dual antiplatelet therapy, TCAR was offered as an alternative to standard carotid endarterectomy. Intraoperatively, following stent delivery, no flow was appreciated through the carotid stent or distal ICA. Neuromonitoring remained stable and was reassuring for distal ICA spasm with no-reflow phenomenon. The patient tolerated the procedure well and has had no stent-related complications through 10 months of follow-up. CONCLUSION This case highlights the utility of neuromonitoring with TCAR as an adjunct to intraoperative decision-making in the setting of suspected internal carotid artery (ICA) vasospasm versus thrombosis after stent delivery.
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Affiliation(s)
| | - Kaitlyn Rountree
- Division of Vascular Surgery, University of Missouri, Columbia, MO, USA
| | - Jonathan Bath
- Division of Vascular Surgery, University of Missouri, Columbia, MO, USA
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Bevilacqua S, Ticozzelli G, Orso M, Alba G, Capoccia L, Cappelli A, Cernetti C, Diomedi M, Dorigo W, Faggioli G, Giannace G, Giannandrea D, Giannetta M, Lessiani G, Marone EM, Mazzaccaro D, Migliacci R, Nano G, Pagliariccio G, Petruzzellis M, Plutino A, Pomatto S, Pulli R, Sirignano P, Vacirca A, Visco E, Moghadam SP, Lanza G, Lanza J. Anesthetic management of carotid endarterectomy: an update from Italian guidelines. JOURNAL OF ANESTHESIA, ANALGESIA AND CRITICAL CARE (ONLINE) 2022; 2:24. [PMID: 37386522 PMCID: PMC10245611 DOI: 10.1186/s44158-022-00052-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 05/12/2022] [Indexed: 07/01/2023]
Abstract
BACKGROUND AND AIMS In order to systematically review the latest evidence on anesthesia, intraoperative neurologic monitoring, postoperative heparin reversal, and postoperative blood pressure management for carotid endarterectomy. The present review is based on a single chapter of the Italian Health Institute Guidelines for diagnosis and treatment of extracranial carotid stenosis and stroke prevention. METHODS AND RESULTS A systematic article review focused on the previously cited topics published between January 2016 and October 2020 has been performed; we looked for both primary and secondary studies in the extensive archive of Medline/PubMed and Cochrane library databases. We selected 14 systematic reviews and meta-analyses, 13 randomized controlled trials, 8 observational studies, and 1 narrative review. Based on this analysis, syntheses of the available evidence were shared and recommendations were indicated complying with the GRADE-SIGN version methodology. CONCLUSIONS From this up-to-date analysis, it has emerged that any type of anesthesia and neurological monitoring method is related to a better outcome after carotid endarterectomy. In addition, insufficient evidence was found to justify reversal or no-reversal of heparin at the end of surgery. Furthermore, despite a low evidence level, a suggestion for blood pressure monitoring in the postoperative period was formulated.
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Affiliation(s)
- Sergio Bevilacqua
- Department of Anesthesia, Azienda Ospedaliera Universitaria Careggi, Firenze, Italy
| | - Giulia Ticozzelli
- Anesthesiology and Intensive Care Unit, Fondazione I.R.C.C.S. Policlinico San Matteo, Pavia, Italy.
| | - Massimiliano Orso
- Società Italiana di Chirurgia Vascolare ed Endovascolare (SICVE), Roma, Italy
| | - Giuseppe Alba
- Department of Vascular Surgery, University of Siena, Siena, Italy
| | - Laura Capoccia
- Vascular and Endovascular Surgery Division, Policlinico Umberto I La Sapienza University of Rome, Rome, Italy
| | - Alessandro Cappelli
- Vascular Surgery Unit, Policlinico Le Scotte Hospital University of Siena, Siena, Italy
| | - Carlo Cernetti
- Division of Cardiology and and Interventional Hemodynamics, Ca' Foncello Hospital, Azienda USLL2 Marca Trevigiana, Treviso, Italy
| | - Marina Diomedi
- Stroke Unit, Department of Systems Medicine, Tor Vergata University Hospital, Rome, Italy
| | - Walter Dorigo
- Vascular Surgery Unit, University of Florence, Florence, Italy
| | - Gianluca Faggioli
- Vascular Surgery Unit, Policlinico Sant'Orsola, Alma Mater Studiorum University, Bologna, Italy
| | - Giovanni Giannace
- Vascular Surgery Unit, Arcispedale Snata Maria Nuova, Reggio Emilia, Italy
| | - David Giannandrea
- Stroke Unit, Neurology Department, USL Umbria 1, Cittá di Castello, Perugia, Italy
| | - Matteo Giannetta
- Vascular Surgery Unit, IRCCS Policlinico San Donato Hospital University, San Donato Milanese, Italy
| | | | - Enrico Maria Marone
- Vascular Surgery Unit, Department of Policlinico Monaza, Monza, Italy
- Pavia University, Pavia, Italy
| | - Daniela Mazzaccaro
- Vascular Surgery Unit, IRCCS Policlinico San Donato Hospital University, San Donato Milanese, Italy
| | - Rino Migliacci
- Angiology and Internal Medicine, Valdichiana S.Margherita Hospital, Cortona, Italy
| | - Giovanni Nano
- Vascular Surgery Unit, IRCCS Policlinico San Donato Hospital University, San Donato Milanese, Italy
| | | | | | | | - Sara Pomatto
- Vascular Surgery Unit, Policlinico Sant'Orsola, Alma Mater Studiorum University, Bologna, Italy
| | - Raffaele Pulli
- Vascular Surgery Unit, Policlinico Careggi Hospital University, Florence, Italy
| | - Pasqualino Sirignano
- Vascular and Endovascular Surgery Division, Sant'andrea Hospital , "La sapienza" University of Rome, Rome, Italy
| | - Andrea Vacirca
- Vascular Surgery Unit, Policlinico San'Orsola-Alma Mater Studiorum University, Bologna, Italy
| | - Emanuele Visco
- Division of Cardiology and Interventional Hemodynamic, San Giacomo Apostolo Hospital, Azienda ULSS2 Marca Trevigiana, Castelfranco Veneto, Italy
| | | | - Gaetano Lanza
- Vascular Surgery Department, Multimedica Hospital-IRCCS, Castellanza, Italy
| | - Jessica Lanza
- Vascular Surgery Department, IRCSS Ospedale Policlinico, San Martino Genova, Italy
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Moehl K, Shandal V, Anetakis K, Paras S, Mina A, Crammond D, Balzer J, Thirumala PD. Predicting transient ischemic attack after carotid endarterectomy: The role of intraoperative neurophysiological monitoring. Clin Neurophysiol 2022; 141:1-8. [DOI: 10.1016/j.clinph.2022.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 05/17/2022] [Accepted: 06/07/2022] [Indexed: 11/16/2022]
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Paras S, Mina A, Crammond DJ, Visweswaran S, Anetakis KM, Balzer JR, Shandal V, Thirumala PD. Cardiovascular-related mortality after intraoperative neurophysiologic monitoring changes during carotid endarterectomy. Clin Neurophysiol 2022; 139:43-48. [DOI: 10.1016/j.clinph.2022.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 04/10/2022] [Accepted: 04/11/2022] [Indexed: 11/03/2022]
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Overview and Diagnostic Accuracy of Near Infrared Spectroscopy in Carotid Endarterectomy: A Systematic Review and Meta-analysis. Eur J Vasc Endovasc Surg 2021; 62:695-704. [PMID: 34627675 DOI: 10.1016/j.ejvs.2021.08.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/29/2021] [Accepted: 08/14/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Carotid endarterectomy is recommended for the prevention of ischaemic stroke due to carotid stenosis. However, the risk of stroke after carotid endarterectomy has been estimated at 2% - 5%. Monitoring intra-operative cerebral oxygenation with near infrared spectroscopy (NIRS) has been assessed as a strategy to reduce intra- and post-operative complications. The aim was to summarise the diagnostic accuracy of NIRS to detect intra-operative ischaemic events, the values associated with ischaemic events, and the relative contribution of external carotid contamination to the NIRS signal in adults undergoing carotid endarterectomy. DATA SOURCES EMBASE, MEDLINE, Cochrane Centre Register of Controlled Trials, and reference lists through May 2019 were searched. REVIEW METHODS Non-randomised and randomised studies assessing NIRS as an intra-operative monitoring tool in carotid endarterectomy were included. Studies using NIRS as the reference were excluded. Risk of bias was assessed using the Newcastle Ottawa Scale, RoB-2, and QUADAS-2. RESULTS Seventy-six studies were included (n = 8 480), under local (n = 1 864) or general (n = 6 582) anaesthesia. Seven studies were eligible for meta-analysis (n = 524). As a tool for identifying intra-operative ischaemia, specificity increased with more stringent NIRS thresholds, while there was unpredictable variation in sensitivity across studies. A Δ20% threshold under local anaesthesia resulted in pooled estimates for sensitivity and specificity of 70.5% (95% confidence interval, CI, 54.1 - 82.9) and 92.4% (95% CI 85.5 - 96.1) compared with awake neurological monitoring. These studies had low or unclear risk of bias. NIRS signal consistently dropped across clamping and recovered to pre-clamp values upon de-clamp in most studies, and larger decreases were observed in patients with ischaemic events. The contribution of extracranial signal to change in signal across clamp varied from 3% to 50%. CONCLUSION NIRS has low sensitivity and high specificity to identify intra-operative ischaemia compared with awake monitoring. Extracranial signal contribution was highly variable. Ultimately, data from high quality studies are desperately needed to determine the utility of NIRS.
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Mirallave Pescador A, Pérez Lorensu PJ, Saponaro González Á, Darias Delbey B, Pérez Burkhardt JL, Ucelay Gómez R, González Tabares EF, Ibrahim Achi Z, Guerrero Ramírez CS, Padrón Encalada CE, Jiménez Sosa A, Plata Bello J. Anaesthesia and multimodality intraoperative neuromonitoring in carotid endarterectomy. Chronological evolution and effects on intraoperative neurophysiology. J Clin Monit Comput 2021; 35:1429-1436. [PMID: 33389357 DOI: 10.1007/s10877-020-00621-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 11/18/2020] [Indexed: 10/22/2022]
Abstract
Contingency data was retrospectively collected to evaluate the historical and current ability to provide multimodality intraoperative neurophysiological monitoring during carotid endarterectomy under two conditions: total intravenous anaesthesia (TIVA) and low dose halogenated anaesthesia (SEVO). 229 patients were monitored during carotid endarterectomy procedures under general anaesthesia between 2012 and 2020. 121 Patients were monitored with SEVO at a minimum alveolar concentration less than 0.7 and 108 were monitored using TIVA, according to common anaesthetic practice standards in our hospital across the years. Multimodality IONM was established with electroencephalography, somatosensory evoked potentials and motor evoked potentials. As compared to TIVA, patients monitored with SEVO showed significantly higher motor evoked potential thresholds (313.52 ± 77.74 SEVO and 218.93 V ± 103.2 V TIVA p < 0.05) and lower reproducibility. Electroencephalography and somatosensory evoked potentials showed no significant differences among the groups. When using SEVO, multimodality intraoperative neurophysiological monitoring during carotid endarterectomy could mask or miss a motor isolated change in patients in spite of low dose minimum alveolar concentration and of apparently adequate electroencephalography and somatosensory evoked potentials for monitoring. Given these difficulties, we believe the chronological transfer to TIVA could have improved our ability to establish multimodality intraoperative neurophysiological monitoring during carotid endarterectomy in recent times.
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Affiliation(s)
| | - Pedro Javier Pérez Lorensu
- Unidad de Monitorización Neurofisiológica Intraoperatoria, Hospital Universitario de Canarias, Santa Cruz de Tenerife, España
| | - Ángel Saponaro González
- Unidad de Monitorización Neurofisiológica Intraoperatoria, Hospital Universitario de Canarias, Santa Cruz de Tenerife, España
| | - Beneharo Darias Delbey
- Servicio de Anestesia, Hospital Universitario de Canarias, Santa Cruz de Tenerife, España
| | | | - Roberto Ucelay Gómez
- Servicio de Cirugía Vascular, Hospital Universitario de Canarias, Santa Cruz de Tenerife, España
| | | | - Zeina Ibrahim Achi
- Servicio de Cirugía Vascular, Hospital Universitario de Canarias, Santa Cruz de Tenerife, España
| | | | | | - Alejandro Jiménez Sosa
- Unidad de Investigación, Hospital Universitario de Canarias, Santa Cruz de Tenerife, España
| | - Julio Plata Bello
- Servicio de Neurocirugía, Hospital Universitario de Canarias, Santa Cruz de Tenerife, España
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