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Tang F, Guo P, Lan X, Shi M, Feng Y. Effectiveness of MEP and SSEP Monitoring in the Diagnosis of Neurological Dysfunction Immediately After Craniotomy Aneurysm Clipping. J Craniofac Surg 2024; 35:e38-e44. [PMID: 37943050 DOI: 10.1097/scs.0000000000009825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 09/12/2023] [Indexed: 11/10/2023] Open
Abstract
OBJECTIVE To explore the diagnostic accuracy of motor-evoked potential (MEP) and somatosensory-evoked potential (SSEP) monitoring in predicting immediate neurological dysfunction after craniotomy aneurysm clipping. METHODS A total of 184 patients with neurosurgery aneurysms in the Affiliated Hospital of Qingdao University from April 2019 to December 2021 were retrospectively included. All patients underwent craniotomy aneurysm clipping, and MEP and SSEP were used to monitor during the operation. Receiver operating characteristic (ROC) curve analysis was used to determine the optimal cutoff value for early warning of MEP and SSEP amplitude decline and to evaluate the effectiveness of MEP and SSEP changes in predicting immediate postoperative neurological dysfunction. RESULTS Among the 184 patients with intracranial aneurysms, the incidences of immediate postoperative neurological dysfunction were 44.4% (12/27) and 3.2% (5/157) in patients with intraoperative MEP changes and without changes, respectively. For SSEP, The incidence rates were 52.6% (10/19) and 4.2% (7/165), respectively, and the differences were statistically significant ( P <0.001). Significant changes in intraoperative MEP and SSEP were significantly associated with the development of immediate postoperative neurological deficits ( P <0.05). The critical values for early warning of MEP and SSEP amplitude decrease were: 61.6% ( P < 0.001, area under the curve 0.803) for MEP amplitude decrease and 54.6% ( P <0.001, area under the curve 0.770) for SSEP amplitude decrease. The sensitivity and specificity of MEP amplitude change in predicting immediate postoperative neurological dysfunction were 70.6% and 91.0%, respectively. For SSEP amplitude changes, the sensitivity and specificity were 58.8% and 95.8%, respectively. CONCLUSIONS Motor-evoked potential and SSEP monitoring have moderate sensitivity and high specificity for immediate postoperative neurological dysfunction after craniotomy aneurysm clipping. Motor-evoked potential is more accurate than SSEP. Patients with changes in MEP and SSEP are at greatly increased risk of immediate postoperative neurologic deficits.
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Affiliation(s)
- Fengjiao Tang
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Qingdao, China
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Šmigoc T, Kozorog N, Ravnik J. Case series: Intraoperative neuromonitoring and angiography in the surgical treatment of vascular malformations. Front Neurol 2023; 14:1182576. [PMID: 37954642 PMCID: PMC10637549 DOI: 10.3389/fneur.2023.1182576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 09/27/2023] [Indexed: 11/14/2023] Open
Abstract
In the surgical treatment of cerebral vascular malformations, e.g., aneurysms and arteriovenous malformations, the risk of ischemic complications is 6.7%, and a residual aneurysm is possible in 5.2% of these cases. Ischemic lesions can result in permanent neurological deficits, and a residual aneurysm can lead to the recurrence of the aneurysm in 2% of cases. In this article, we present five cases (two cases of ruptured aneurysms, two cases of non-ruptured aneurysms, and a case of arteriovenous malformation) in which we reduced the aforementioned risks with the use of intraoperative neuromonitoring and angiography. Intraoperative neuromonitoring (IONM) is used to measure motor and sensory-evoked potentials to detect brain hypoperfusion. Intraoperative angiography with the dye indocyanine green (ICG-A), which fluoresces in a vessel under a microscope after intravenous administration, helps to identify residual aneurysm sacs and distal blood flow. With the use of IONM and ICG-A, we identified abnormalities and adjusted our interventions and treatments. IONM and ICG-A can lead to a better outcome after surgical treatment of cerebral vascular abnormalities.
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Affiliation(s)
- Tomaž Šmigoc
- Department of Neurosurgery, Surgical Clinic, UMC Maribor, Maribor, Slovenia
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Skrap B, Di Bonaventura R, Di Domenico M, Sturiale CL, Auricchio AM, Maugeri R, Giammalva GR, Iacopino DG, Olivi A, Marchese E, Albanese A. Has intraoperative neuromonitoring changed the surgery for unruptured middle cerebral artery aneurysms? A retrospective comparative study. Neurosurg Rev 2023; 46:191. [PMID: 37535200 PMCID: PMC10400477 DOI: 10.1007/s10143-023-02099-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/30/2023] [Accepted: 07/24/2023] [Indexed: 08/04/2023]
Abstract
Intraoperative neurophysiological monitoring (IONM) represents one of the available technologies able to assess ischemia and aimed to improve surgical outcome reducing the treatment related morbidity in surgery for intracranial aneurysms. Many studies analyzing the impact of IONM are poised by the heterogeneity bias affecting the cohorts. We report our experience with IONM for surgery of unruptured middle cerebral artery (MCA) aneurysm in order to highlight its influence on functional and radiological outcome and surgical strategy. We retrospectively reviewed all MCA unruptured aneurysms treated between January 2013 and June 2021 by our institutional neurovascular team. Patients were divided into 2 groups according to the use of IONM. A total of 153 patients were included in the study, 52 operated on without IONM and 101 with IONM. The groups did not differ preoperatively regarding clinical status and aneurysm characteristics. Patients operated with IONM had better functional outcomes at discharge as well as at follow-up (p= 0.048, p=0.041) due to lower symptomatic ischemia and better radiological outcome due to lower rate of unexpected aneurysmal remnants (p= 0.0173). The introduction of IONM changed the use of temporary clipping (TeC), increasing its average duration (p= 0.01) improving the safety of dissecting and clipping the aneurysm. IONM in surgery for unruptured MCA aneurysm could improve the efficacy and safety of clipping strategy in the way it showed a role in changing the use of TeC and was associated to the reduction of unexpected aneurysmal remnants' rate and improvement in both short- and long-term patient's outcome.
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Affiliation(s)
- Benjamin Skrap
- Department of Neurosurgery, Fondazione Policlinico Agostino Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
- Institute of Neurosurgery, Catholic University of the Sacred Heart, Largo Francesco Vito, 1, 00168, Rome, Italy
| | - Rina Di Bonaventura
- Department of Neurosurgery, Fondazione Policlinico Agostino Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy.
- Institute of Neurosurgery, Catholic University of the Sacred Heart, Largo Francesco Vito, 1, 00168, Rome, Italy.
| | - Michele Di Domenico
- Department of Neurosurgery, Fondazione Policlinico Agostino Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
- Institute of Neurosurgery, Catholic University of the Sacred Heart, Largo Francesco Vito, 1, 00168, Rome, Italy
| | - Carmelo Lucio Sturiale
- Department of Neurosurgery, Fondazione Policlinico Agostino Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
- Institute of Neurosurgery, Catholic University of the Sacred Heart, Largo Francesco Vito, 1, 00168, Rome, Italy
| | - Anna Maria Auricchio
- Department of Neurosurgery, Fondazione Policlinico Agostino Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
- Institute of Neurosurgery, Catholic University of the Sacred Heart, Largo Francesco Vito, 1, 00168, Rome, Italy
| | - Rosario Maugeri
- Neurosurgical Clinic, AOUP "Paolo Giaccone", Department of Biomedicine Neurosciences and Advanced Diagnostics, School of medicine, University of Palermo, Palermo, Italy
| | - Giuseppe Roberto Giammalva
- Neurosurgical Clinic, AOUP "Paolo Giaccone", Department of Biomedicine Neurosciences and Advanced Diagnostics, School of medicine, University of Palermo, Palermo, Italy
| | - Domenico Gerardo Iacopino
- Neurosurgical Clinic, AOUP "Paolo Giaccone", Department of Biomedicine Neurosciences and Advanced Diagnostics, School of medicine, University of Palermo, Palermo, Italy
| | - Alessandro Olivi
- Department of Neurosurgery, Fondazione Policlinico Agostino Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
- Institute of Neurosurgery, Catholic University of the Sacred Heart, Largo Francesco Vito, 1, 00168, Rome, Italy
| | - Enrico Marchese
- Department of Neurosurgery, Fondazione Policlinico Agostino Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
- Institute of Neurosurgery, Catholic University of the Sacred Heart, Largo Francesco Vito, 1, 00168, Rome, Italy
| | - Alessio Albanese
- Department of Neurosurgery, Fondazione Policlinico Agostino Gemelli IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy
- Institute of Neurosurgery, Catholic University of the Sacred Heart, Largo Francesco Vito, 1, 00168, Rome, Italy
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Hoh BL, Ko NU, Amin-Hanjani S, Chou SHY, Cruz-Flores S, Dangayach NS, Derdeyn CP, Du R, Hänggi D, Hetts SW, Ifejika NL, Johnson R, Keigher KM, Leslie-Mazwi TM, Lucke-Wold B, Rabinstein AA, Robicsek SA, Stapleton CJ, Suarez JI, Tjoumakaris SI, Welch BG. 2023 Guideline for the Management of Patients With Aneurysmal Subarachnoid Hemorrhage: A Guideline From the American Heart Association/American Stroke Association. Stroke 2023; 54:e314-e370. [PMID: 37212182 DOI: 10.1161/str.0000000000000436] [Citation(s) in RCA: 65] [Impact Index Per Article: 65.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
AIM The "2023 Guideline for the Management of Patients With Aneurysmal Subarachnoid Hemorrhage" replaces the 2012 "Guidelines for the Management of Aneurysmal Subarachnoid Hemorrhage." The 2023 guideline is intended to provide patient-centric recommendations for clinicians to prevent, diagnose, and manage patients with aneurysmal subarachnoid hemorrhage. METHODS A comprehensive search for literature published since the 2012 guideline, derived from research principally involving human subjects, published in English, and indexed in MEDLINE, PubMed, Cochrane Library, and other selected databases relevant to this guideline, was conducted between March 2022 and June 2022. In addition, the guideline writing group reviewed documents on related subject matter previously published by the American Heart Association. Newer studies published between July 2022 and November 2022 that affected recommendation content, Class of Recommendation, or Level of Evidence were included if appropriate. Structure: Aneurysmal subarachnoid hemorrhage is a significant global public health threat and a severely morbid and often deadly condition. The 2023 aneurysmal subarachnoid hemorrhage guideline provides recommendations based on current evidence for the treatment of these patients. The recommendations present an evidence-based approach to preventing, diagnosing, and managing patients with aneurysmal subarachnoid hemorrhage, with the intent to improve quality of care and align with patients' and their families' and caregivers' interests. Many recommendations from the previous aneurysmal subarachnoid hemorrhage guidelines have been updated with new evidence, and new recommendations have been created when supported by published data.
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Baumgart L, Wagner A, Dorier AS, Droese D, Aftahy AK, Wostrack M, Ille S, Meyer B, Krieg SM. Predictive value of IOM in clipping of unruptured intracranial aneurysms - A prospective study from the surgeon's point of view. BRAIN & SPINE 2023; 3:101759. [PMID: 37383469 PMCID: PMC10293320 DOI: 10.1016/j.bas.2023.101759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 06/30/2023]
Abstract
Introduction Intraoperative neuromonitoring (IOM) of motor/somatosensory evoked potentials is a well-established approach for reducing ischemic complications after aneurysm clipping. Research question To determine the predictive validity of IOM for postoperative functional outcome and its perceived added value for intraoperative real-time feedback of functional impairment in the surgical treatment of unruptured intracranial aneurysms (UIAs). Material and methods Prospective study of patients scheduled for elective clipping of UIAs between 02/2019-02/2021. Transcranial motor evoked potentials (tcMEP) were used in all cases, a significant decline was defined as loss of ≥50% in amplitude or 50% latency increase. Clinical data were correlated to postoperative deficits. A surgeon's questionnaire was conceived. Results 47 patients were included, median age 57 years (range 26-76). IOM was successful in all cases. In 87.2%, IOM was stable throughout surgery, although 1 patient (2.4%) demonstrated a permanent postoperative neurological deficit. All patients with an intraoperatively reversible tcMEP-decline (12.7%) showed no surgery-related deficit, regardless of the decline duration (range 0.5-40.0 min; mean: 13.8). Temporary clipping (TC) was performed in 12 cases (25.5%), with a decline in amplitude in 4 patients. After clip-removal, all amplitudes returned to baseline. IOM provided the surgeon with a higher sense of security in 63.8%. Discussion and conclusion IOM remains invaluable during elective microsurgical clipping, particularly during TC of MCA and AcomA-aneurysms. It alerts the surgeon of impending ischemic injury and offers a way of maximizing the time frame for TC. IOM has highly increased surgeons' subjective feeling of security during the procedure.
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Affiliation(s)
- Lea Baumgart
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Arthur Wagner
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Anne-Sophie Dorier
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Doris Droese
- Department of Anaesthesiology, Technical University Munich School of Medicine, Munich, Germany
| | - Amir K. Aftahy
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Maria Wostrack
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Sebastian Ille
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Bernhard Meyer
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
| | - Sandro M. Krieg
- Department of Neurosurgery, Technical University Munich School of Medicine, Munich, Germany
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Clinical Usage of Different Doses of Cis-Atracurium in Intracranial Aneurysm Surgery and Its Effect on Motor-Evoked Potentials. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:5910019. [PMID: 35799657 PMCID: PMC9256351 DOI: 10.1155/2022/5910019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/24/2022] [Accepted: 05/26/2022] [Indexed: 11/17/2022]
Abstract
The objective of this work was to investigate the effect of different doses of cis-atracurium on patients undergoing general anesthesia induction (GAI) during intracranial aneurysm surgery (ICAS). In this work, 90 patients who underwent ICAS under the elective motor-evoked potential (MEP) monitoring in the First Affiliated Hospital of Northwest University (Xi'an No. 1 Hospital) from January 2021 to May 2022 were enrolled as the research objects. Randomly, they were rolled into a S1 group (30 cases, 2 times 95% effective dose (ED95) cis-atracurium), a S2 group (30 cases, 3 times ED95 cis-atracurium), and a S3 group (30 cases, 4 times ED95 cis-atracurium). The endotracheal intubation conditions, the train-of-four (TOF) rate (TOFR), body movement, and spontaneous breathing were compared among the three groups of patients. The results showed that the MEP inhibition time of the patients in the S3 group was much longer than that of the S1 and S2 groups, but it showed no significant difference between the S1 group and S2 group (P > 0.05). The good rates of endotracheal intubation conditions in the S2 group (100%) and S3 group (100%) were obviously higher than the rate in the S1 group (43.33%). The TOFRs of patients in S2 and S3 groups at time t2 and t3 were lower obviously to that at time t0, while the TOFRs of patients in S3 group at time t2 and t3 were still lower in contrast to the S2 group (P < 0.05). The mean arterial pressure (MAP) and heart rate (HR) of patients in all groups were lower at t1, t2, and t3 than at t0 (P < 0.05), while the differences among different groups were not remarkable (P > 0.05). Finally, using 3 times ED95 cis-atracurium for GAI could reduce the risk of intraoperative body movement and spontaneous breathing, as well as the residual degree of muscle relaxation, in patients with ICAS, without affecting MEP monitoring, improving endotracheal intubation conditions, and increasing safety during open neurosurgery operations.
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Soto-Edwards A, Kawamoto A, Peters A. Effective Use of Ketamine-Dexmedetomidine Following Propofol-Induced Hyperlactatemia: A Case Report. Cureus 2022; 14:e25764. [PMID: 35812601 PMCID: PMC9270096 DOI: 10.7759/cureus.25764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2022] [Indexed: 11/05/2022] Open
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Detection of impending perfusion deficits by intraoperative computed tomography (iCT) in aneurysm surgery of the anterior circulation. Acta Neurochir (Wien) 2021; 163:3501-3514. [PMID: 34643806 PMCID: PMC8599411 DOI: 10.1007/s00701-021-05022-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 10/02/2021] [Indexed: 11/22/2022]
Abstract
Background The aim of our study was to evaluate the additional benefit of intraoperative computed tomography (iCT), intraoperative computed tomography angiography (iCTA), and intraoperative computed tomography perfusion (iCTP) in the intraoperative detection of impending ischemia to established methods (indocyanine green videoangiography (ICGVA), microDoppler, intraoperative neuromonitoring (IONM)) for initiating timely therapeutic measures. Methods Patients with primary aneurysms of the anterior circulation between October 2016 and December 2019 were included. Data of iCT modalities compared to other techniques (ICGVA, microDoppler, IONM) was recorded with emphasis on resulting operative conclusions leading to inspection of clip position, repositioning, or immediate initiation of conservative treatment strategies. Additional variables analyzed included patient demographics, aneurysm-specific characteristics, and clinical outcome. Results Of 194 consecutive patients, 93 patients with 100 aneurysms received iCT imaging. While IONM and ICGVA were normal, an altered vessel patency in iCTA was detected in 5 (5.4%) and a mismatch in iCTP in 7 patients (7.5%). Repositioning was considered appropriate in 2 patients (2.2%), where immediate improvement in iCTP could be documented. In a further 5 cases (5.4%), intensified conservative therapy was immediately initiated treating the reduced CBP as clip repositioning was not considered causal. In terms of clinical outcome at last FU, mRS0 was achieved in 85 (91.4%) and mRS1-2 in 7 (7.5%) and remained mRS4 in one patient with SAH (1.1%). Conclusions Especially iCTP can reveal signs of impending ischemia in selected cases and enable the surgeon to promptly initiate therapeutic measures such as clip repositioning or intraoperative onset of maximum conservative treatment, while established tools might fail to detect those intraoperative pathologic changes.
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Kefalas D, Pérez-Fajardo G, Solivera J, Méndez-García M, Fountas KN. Letter to the Editor. Methodology and interpretation of intraoperative neuromonitoring during intracranial aneurysm clipping. J Neurosurg 2021; 135:1583-1584. [PMID: 34298509 DOI: 10.3171/2021.3.jns21520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Asimakidou E, Abut PA, Raabe A, Seidel K. Motor Evoked Potential Warning Criteria in Supratentorial Surgery: A Scoping Review. Cancers (Basel) 2021; 13:2803. [PMID: 34199853 PMCID: PMC8200078 DOI: 10.3390/cancers13112803] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/30/2021] [Accepted: 05/31/2021] [Indexed: 12/31/2022] Open
Abstract
During intraoperative monitoring of motor evoked potentials (MEP), heterogeneity across studies in terms of study populations, intraoperative settings, applied warning criteria, and outcome reporting exists. A scoping review of MEP warning criteria in supratentorial surgery was conducted in accordance with the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR). Sixty-eight studies fulfilled the eligibility criteria. The most commonly used alarm criteria were MEP signal loss, which was always a major warning sign, followed by amplitude reduction and threshold elevation. Irreversible MEP alterations were associated with a higher number of transient and persisting motor deficits compared with the reversible changes. In almost all studies, specificity and Negative Predictive Value (NPV) were high, while in most of them, sensitivity and Positive Predictive Value (PPV) were rather low or modest. Thus, the absence of an irreversible alteration may reassure the neurosurgeon that the patient will not suffer a motor deficit in the short-term and long-term follow-up. Further, MEPs perform well as surrogate markers, and reversible MEP deteriorations after successful intervention indicate motor function preservation postoperatively. However, in future studies, a consensus regarding the definitions of MEP alteration, critical duration of alterations, and outcome reporting should be determined.
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Affiliation(s)
- Evridiki Asimakidou
- Department of Neurosurgery, Inselspital, Bern University Hospital, 3010 Bern, Switzerland; (E.A.); (P.A.A.); (A.R.)
| | - Pablo Alvarez Abut
- Department of Neurosurgery, Inselspital, Bern University Hospital, 3010 Bern, Switzerland; (E.A.); (P.A.A.); (A.R.)
- Department of Neurosurgery, Clínica 25 de Mayo, 7600 Mar del Plata, Argentina
| | - Andreas Raabe
- Department of Neurosurgery, Inselspital, Bern University Hospital, 3010 Bern, Switzerland; (E.A.); (P.A.A.); (A.R.)
| | - Kathleen Seidel
- Department of Neurosurgery, Inselspital, Bern University Hospital, 3010 Bern, Switzerland; (E.A.); (P.A.A.); (A.R.)
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Guo Z, Wang W, Xie D, Lin R. Effect of supplemental dexmedetomidine in interventional embolism on cerebral oxygen metabolism in patients with intracranial aneurysms. J Int Med Res 2021; 49:3000605211002960. [PMID: 33823639 PMCID: PMC8033473 DOI: 10.1177/03000605211002960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Objective To investigate the effect of supplemental dexmedetomidine in interventional
embolism on cerebral oxygen metabolism in patients with intracranial
aneurysms. Methods Ninety patients who underwent interventional embolism of intracranial
aneurysms were equally divided into Group A and Group B. In Group A,
dexmedetomidine was injected intravenously 10 minutes before inducing
anesthesia, with a loading dose of 0.6 µg/kg followed by 0.4 µg/kg/hour.
Group B received the same amount of normal saline by the same injection
method. Heart rate (HR), mean arterial pressure (MAP), arterial–jugular
venous oxygen difference [D(a-jv) (O2)], cerebral oxygen
extraction [CE (O2)], and intraoperative propofol use were
recorded before inducing anesthesia (T0) and at five time points
thereafter. Results The amount of propofol in Group A was lower vs Group B. At all five time
points after T0, HR, MAP, D(a-jv) (O2), and CE
(O2) in Group A were significantly lower vs Group B, with
significant differences for jugular venous oxygen saturation
(SjvO2) and the oxygen content of the internal
jugular vein (CjvO2) between the groups. Conclusion Dexmedetomidine resulted in less intraoperative propofol, lower D(a-jv)
(O2) and CE (O2), and improved cerebral oxygen
metabolism.
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Affiliation(s)
- Zhang Guo
- Department of Neurosurgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
| | - Weiwei Wang
- Department of Neurosurgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
| | - Dahua Xie
- Department of Neurosurgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
| | - Ruisheng Lin
- Department of Neurosurgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
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You H, Fan X, Guo D, Li Z, Tao X, Qi L, Ling M, Liu J, Qiao H. Efficacy of evoked potential monitoring for predicting postoperative motor status in internal carotid artery aneurysm surgeries. J Clin Monit Comput 2021; 36:667-673. [PMID: 33755845 DOI: 10.1007/s10877-021-00693-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 03/12/2021] [Indexed: 12/17/2022]
Abstract
This study aimed to investigate the efficacy of intraoperative motor evoked potential (MEP) and somatosensory evoked potential (SSEP) monitoring for predicting postoperative motor deficits (PMDs) in patients with internal carotid artery (ICA) aneurysms. The data for 138 patients with ICA aneurysms who underwent surgical clipping as well as their intraoperative neuromonitoring data were retrospectively reviewed. The efficacy of MEP/SSEP changes for predicting PMDs was assessed using binary logistic regression analysis. Subsequently, receiver operating characteristic curve analysis was used to obtain a supplementary critical value of the MEP/SSEP deterioration duration. The sensitivity and specificity of MEP changes for predicting PMDs were 0.824 and 0.843, respectively. For SSEP changes, the sensitivity and specificity were 0.529 and 0.959, respectively. MEP and SSEP changes were identified as independent predictors for short-term (p = 0.002 and 0.011, respectively) and long-term PMDs (p = 0.040 and 0.006, respectively). The supplementary critical value for MEP deterioration duration for predicting PMDs was 14 min (p = 0.007, AUC = 0.805). For SSEP, the value was 14.5 min (p = 0.042, AUC = 0.875). The MEP/SSEP changes adjusted by those optimal values were also identified as independent predictors for short-term (p < 0.001 and p = 0.005, respectively) and long-term PMDs (p = 0.019 and 0.003, respectively). Intraoperative MEP and SSEP deterioration durations are effective in predicting PMDs in patients with ICA aneurysms.
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Affiliation(s)
- Hao You
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Xing Fan
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Dongze Guo
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Zhibao Li
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Xiaorong Tao
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Lei Qi
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Miao Ling
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Jiajia Liu
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China
| | - Hui Qiao
- Department of Neurophysiology, Beijing Neurosurgical Institute, Capital Medical University, 119 South Fourth Ring West Road, Fengtai District, Beijing, 100070, China.
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Park D, Kim BH, Lee SE, Jeong E, Cho K, Park JK, Choi YJ, Jin S, Hong D, Kim MC. Usefulness of Intraoperative Neurophysiological Monitoring During the Clipping of Unruptured Intracranial Aneurysm: Diagnostic Efficacy and Detailed Protocol. Front Surg 2021; 8:631053. [PMID: 33718428 PMCID: PMC7952634 DOI: 10.3389/fsurg.2021.631053] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/20/2021] [Indexed: 12/21/2022] Open
Abstract
Background: Intraoperative neurophysiological monitoring (IONM) has been widely applied in brain vascular surgeries to reduce postoperative neurologic deficit (PND). This study aimed to investigate the effect of IONM during clipping of unruptured intracranial aneurysms (UIAs). Methods: Between January 2013 and August 2020, we enrolled 193 patients with 202 UIAs in the N group (clipping without IONM) and 319 patients with 343 UIAs in the M group (clipping with IONM). Patients in the M group were intraoperatively monitored for motor evoked potentials (MEPs) and somatosensory evoked potentials (SSEPs). Irreversible evoked potential (EP) change was defined as EP deterioration that did not recover until surgery completion. Sustained PND was defined as neurological symptoms lasting for more than one postoperative month. Results: Ten (3.1%) and 13 (6.7%) in the M and N groups, respectively, presented with PND. Compared with the N group, the M group had significantly lower occurrence rates of sustained PND [odds ratio (OR) = 0.36, 95% confidence interval (CI) = 0.13–0.98, p = 0.04], ischemic complications (OR = 0.39, 95% CI = 0.15–0.98, p = 0.04), and radiologic complications (OR = 0.40, 95% CI = 0.19–0.82, p = 0.01). Temporary clipping was an independent risk factor for ischemic complications (ICs) in the total patient group (OR = 6.18, 95% CI = 1.75–21.83, p = 0.005), but not in the M group (OR = 5.53, 95% CI = 0.76–41.92, p = 0.09). Regarding PND prediction, considering any EP changes (MEP and/or SSEP) showed the best diagnostic efficiency with a sensitivity of 0.900, specificity of 0.940, positive predictive value of 0.321, negative predictive value (NPV) of 0.997, and a negative likelihood ratio (LR) of 0.11. Conclusion: IONM application during UIA clipping can reduce PND and radiological complications. The diagnostic effectiveness of IONM, specifically the NPV and LR negative values, was optimal upon consideration of changes in any EP modality.
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Affiliation(s)
- Dougho Park
- Department of Rehabilitation Medicine, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
| | - Byung Hee Kim
- Department of Rehabilitation Medicine, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
| | - Sang-Eok Lee
- Department of Rehabilitation Medicine, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
| | - Eunhwan Jeong
- Department of Neurology, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
| | - Kwansang Cho
- Department of Anesthesiology, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
| | - Ji Kang Park
- Department of Radiology, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
| | - Yeon-Ju Choi
- Department of Neurosurgery, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
| | - Suntak Jin
- Department of Neurosurgery, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
| | - Daeyoung Hong
- Department of Neurosurgery, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
| | - Mun-Chul Kim
- Department of Neurosurgery, Pohang Stroke and Spine Hospital, Pohang-si, South Korea
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Fàbregas Julià N. Intraoperative neurophysiological monitoring, personalized medicine and teamwork. REVISTA ESPANOLA DE ANESTESIOLOGIA Y REANIMACION 2021; 68:53-55. [PMID: 33494911 DOI: 10.1016/j.redar.2020.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- N Fàbregas Julià
- Consultor sénior, Profesor asociado, Servicio de Anestesiología y Reanimación, Departamento de Cirugía y Especialidades Medicoquirúrgicas, Hospital Clínic Universitari de Barcelona, Facultat de Medicina, Universitat de Barcelona, Barcelona, España.
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15
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Fang Y. Letter to the Editor. The value and limitations of SSEP/MEP monitoring in intracranial aneurysm surgery. J Neurosurg 2020; 133:1630-1632. [PMID: 32823262 DOI: 10.3171/2020.5.jns201729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Holdefer RN, Guo L. Letter to the Editor. Random assignment of patients to intraoperative neuromonitoring for unruptured intracranial aneurysms? J Neurosurg 2020; 133:940-942. [PMID: 32502998 DOI: 10.3171/2020.4.jns20970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - LanJun Guo
- 2University of California, San Francisco, CA
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17
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Miró J, López-Ojeda P, Gabarrós A, Urriza J, Ulkatan S, Deletis V, Fernández-Conejero I. Letter to the Editor. Intraoperative neuromonitoring in elective aneurysm clipping: methodology matters. J Neurosurg 2020; 133:943-945. [PMID: 32502993 DOI: 10.3171/2020.4.jns201006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Júlia Miró
- 1Hospital Universitari de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Pablo López-Ojeda
- 1Hospital Universitari de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Andreu Gabarrós
- 1Hospital Universitari de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Javier Urriza
- 2Complejo Hospitalario de Navarra-B, Pamplona-Iruña, Navarra, Spain
| | | | - Vedran Deletis
- 4Institute of Neurology and Neurosurgery, Albert Einstein College of Medicine, New York, NY
- 5University Hospital Dubrava, Zagreb, Croatia; and
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18
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Wong AK, Wong RH. Keyhole clipping of a low-lying basilar apex aneurysm without posterior clinoidectomy utilizing endoscopic indocyanine green video angiography. Surg Neurol Int 2020; 11:31. [PMID: 32257557 PMCID: PMC7110063 DOI: 10.25259/sni_582_2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 02/11/2020] [Indexed: 11/17/2022] Open
Abstract
Background: Basilar apex (BX) aneurysms are surgically challenging due to their anatomic location, need to traverse neurovascular structures, and proximity to multiple perforator arteries. Surgical approaches often require extensive bone resection and neurovascular manipulation. Visualization of low-lying BX aneurysms is typically obscured by the posterior clinoid and upper clivus and poses a unique challenge. Subtemporal or anterolateral approaches with a posterior clinoidectomy are often required to achieve adequate exposure, though these maneuvers can add invasiveness, risk, and morbidity to the procedure. Endoscopes and, more recently, fluoroscopic angiography capable endoscopes offer the possibility of providing improved visualization with less exposure allowing for minimally invasive clipping. Case Description: We present the case of a 42-year-old female with incidentally found 5 mm middle cerebral artery and 5 mm BX aneurysms. She underwent a minimally invasive supraorbital keyhole craniotomy for the clipping of both aneurysms. While the posterior clinoid obstructed the necessary visualization for the BX aneurysm, use of endoscopy and endoscopic fluoroscopic angiography allowed for safe and successful clipping without the need for a posterior clinoidectomy. Conclusion: This represents the first reported case of a BX aneurysm clipping through a minimally invasive keyhole craniotomy using endoscopic indocyanine green video angiography. Use of endoscopic indocyanine green angiography, combined with keyhole endoscopic approaches, allows for safe minimally invasive clipping of challenging posterior circulation aneurysms.
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Affiliation(s)
- Andrew K Wong
- Department of Neurosurgery, Rush University Medical Center, Chicago
| | - Ricky H Wong
- Department of Neurosurgery, NorthShore University HealthSystem, Evanston, Illinois
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Neurophysiological monitoring during neurosurgery: anesthetic considerations based on outcome evidence. Curr Opin Anaesthesiol 2019; 32:580-584. [PMID: 31145200 DOI: 10.1097/aco.0000000000000753] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW This article reviews the recent outcome studies that investigated intraoperative neurophysiological monitoring (IONM) during spine, neurovascular and brain tumor surgery. RECENT FINDINGS Several recent studies have focused on identifying which types of neurosurgical procedures might benefit most from IONM use. Despite conflicting literature regarding its efficacy in improving neurological outcomes, many experts have advocated for the use of IONM in neurosurgery. Several themes have emerged from the recent literature: the entire perioperative team must always work together to ensure adequate communication and intervention; systems and checklists, in which each member of the perioperative team has a clearly defined role, can be useful in the event of a sudden intraoperative changes in electrophysiological signals; regardless of the IONM modality used, any sudden change in electrophysiological signal should prompt an immediate and appropriate intervention; a multimodal IONM approach is often, but not always, advantageous over a single IONM approach. SUMMARY For neurosurgical procedures that can be complicated by neural injury, the use of IONM should be considered according to specific patient and surgical factors. Future studies should focus on improving IONM technology and optimizing sensitivity and specificity for detecting any impending neural damage.
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