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Viderman D, Aubakirova M, Nemerenova A, Salamat A, Abdildin YG. The Effects of Dexmedetomidine on Pain-Related Outcomes in Craniotomy: A Systematic Review and Meta-Analysis. World Neurosurg 2024:S1878-8750(24)01174-4. [PMID: 38986935 DOI: 10.1016/j.wneu.2024.07.034] [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: 06/10/2024] [Accepted: 07/03/2024] [Indexed: 07/12/2024]
Abstract
BACKGROUND Craniotomy is associated with several undesirable effects including postoperative pain. This systematic review and meta-analysis aimed to evaluate evidence on the efficacy and safety of dexmedetomidine (DEX) for pain management in patients undergoing craniotomy. METHODS We followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The protocol was registered in Open Science Framework. We searched for existing randomized controlled studies published before June 2023 that used DEX during the perioperative period in craniotomy in PubMed, Scopus, and the Cochrane Library. A meta-analysis was conducted in RevMan. Cochrane RoB2 and GRADE were used for quality assessment. RESULTS A total of 19 randomized controlled trials comprising 3153 patients were included. Pain intensity was lower in the DEX group than the control group at a mean difference [95% confidence interval] of -0.64 [-1.16, -0.13], P-value = 0.01. The DEX group overall consumed less opioids in comparison with the control group at a mean difference = -4.00 [-6.16, -1.83], P value = 0.0003. However, heterogeneity was considerable for both outcomes (I2 = 81% and I2 = 96%, respectively). There was no difference between the DEX and control groups in the time to first postanalgesic requirement, hypertension, hypotension, or cough. CONCLUSIONS The results showed that the use of DEX was associated with lower pain intensity and less opioid use. Patients in the DEX group experienced fewer episodes of nausea and vomiting, agitation, and shivering but more episodes of bradycardia. There was no difference between DEX and control groups in other adverse events.
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Affiliation(s)
- Dmitriy Viderman
- School of Medicine (NUSOM), Nazarbayev University, Astana, Kazakhstan; Department of Anesthesiology, Intensive Care, and Pain Medicine, National Research Oncology Center, Astana, Kazakhstan.
| | - Mina Aubakirova
- School of Medicine (NUSOM), Nazarbayev University, Astana, Kazakhstan
| | - Assel Nemerenova
- School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan
| | - Azamat Salamat
- School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan
| | - Yerkin G Abdildin
- School of Engineering and Digital Sciences, Nazarbayev University, Astana, Kazakhstan
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Ikki Y, Sato T, Nishiwaki K. Successful Second Awake Craniotomy Reoperation With Dexmedetomidine After an Initial Abandonment Case Due to Restlessness. Cureus 2024; 16:e61506. [PMID: 38952610 PMCID: PMC11216107 DOI: 10.7759/cureus.61506] [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] [Accepted: 05/30/2024] [Indexed: 07/03/2024] Open
Abstract
Awake craniotomy (AC) is sometimes aborted due to poor arousal and restlessness. Dexmedetomidine (DEX), an α2-adrenoreceptor agonist, has sedative, analgesic, and anesthetic-sparing effects, with a low risk of respiratory depression, making it effective for intraoperative pain and agitation during the awake phase. We report a case in which AC was successfully performed in combination with low-dose continuous administration of DEX during reoperation in a patient who experienced poor arousal and restlessness during their first surgery, leading to the abandonment of AC. The patient is a 48-year-old male who is scheduled for AC reoperation. Two years ago, the first AC was scheduled and performed under anesthesia with propofol and remifentanil. However, AC was abandoned due to poor intraoperative arousal and restlessness. At reoperation, general anesthesia was induced with propofol and continuous administration of remifentanil (0.1 µg/kg/min); following anesthesia induction (continuous infusion of propofol, remifentanil, and a bolus infusion of fentanyl), DEX was also administered (0.2 µg/kg/hour). We performed a scalp nerve block. Before the awake phase, the propofol dose was decreased as was DEX to 0.1 µg/kg/hour, and propofol and remifentanil were discontinued. The patient gradually awoke without any agitation and restlessness 24 min after stopping propofol and remifentanil and could perform language tasks without any complications. In this case, AC was successfully performed in combination with continuous low-dose administration of DEX at the time of reoperation in a patient who experienced poor arousal and restlessness during their first operation and had to discontinue AC.
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Affiliation(s)
- Yutaro Ikki
- Anesthesiology, Handa City Hospital, Handa, JPN
| | - Takehito Sato
- Anesthesiology, Nagoya University Hospital, Nagoya, JPN
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Guidelines for Awake Surgery. Neurol Med Chir (Tokyo) 2024; 64:1-27. [PMID: 38220155 PMCID: PMC10835579 DOI: 10.2176/jns-nmc.2023-0111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 08/07/2023] [Indexed: 01/16/2024] Open
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Paquin-Lanthier G, Subramaniam S, Leong KW, Daniels A, Singh K, Takami H, Chowdhury T, Bernstein M, Venkatraghavan L. Risk Factors and Characteristics of Intraoperative Seizures During Awake Craniotomy: A Retrospective Cohort Study of 562 Consecutive Patients With a Space-occupying Brain Lesion. J Neurosurg Anesthesiol 2023; 35:194-200. [PMID: 34411059 DOI: 10.1097/ana.0000000000000798] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/23/2021] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Intraoperative seizures (IOSs) during awake craniotomy (AC) are associated with significant morbidity. The reported incidence of IOS is between 3% and 30%. The aim of this study was to identify risk factors for IOS during AC for elective resection or biopsy of a space-occupying brain lesion. METHODS In this retrospective study, we reviewed the records of all awake craniotomies performed by a single neurosurgeon at a single university hospital between July 2006 and December 2018. IOS was defined as a clinically apparent seizure that occurred in the operating room and was documented in the medical records. Explanatory variables were chosen based on previously published literature on risk factors for IOS. RESULTS Five hundred and sixty-two patients had a total of 607 AC procedures during the study period; 581 cases with complete anesthesia records were included in analysis. Twenty-nine (5.0%) IOS events were reported during 29 (5%) awake craniotomies. Most seizures (27/29; 93%) were focal in nature and did not limit planned intraoperative stimulation mapping. Variables associated with IOS at a univariate P -value <0.1 (frontal location of tumor, preoperative radiotherapy, preoperative use of antiepileptic drugs, intraoperative use of dexmedetomidine, and intraoperative stimulation mapping) were included in a multivariable logistic regression. Frontal location of tumor (adjusted odds ratio: 5.68, 95% confidence interval: 2.11-15.30) and intraoperative dexmedetomidine use (adjusted odds ratio: 2.724, 95% confidence interval: 1.24-6.00) were independently associated with IOS in the multivariable analysis. CONCLUSIONS This study identified a low incidence (5%) of IOS during AC. The association between dexmedetomidine and IOS should be further studied in randomized trials as this is a modifiable risk factor.
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Affiliation(s)
| | | | | | | | | | - Hirokazu Takami
- Division of Neurosurgery, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Canada
| | | | - Mark Bernstein
- Division of Neurosurgery, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Canada
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Viderman D, Nabidollayeva F, Bilotta F, Abdildin YG. Comparison of dexmedetomidine and propofol for sedation in awake craniotomy: A meta-analysis. Clin Neurol Neurosurg 2023; 226:107623. [PMID: 36791589 DOI: 10.1016/j.clineuro.2023.107623] [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: 12/07/2022] [Revised: 02/03/2023] [Accepted: 02/05/2023] [Indexed: 02/11/2023]
Abstract
BACKGROUND Awake craniotomy (AC) is the preferred option for the resection of tumors adjacent to eloquent cortical areas and in cases of intractable epilepsy. It is mostly used to maintain the integrity of the brain during intracranial neurosurgical procedures. Awake craniotomy requires the use of ideal anesthetics, hypnotics, and analgesics to balance sedation, prompt the reversal of sedation, and prevent respiratory depression while maintaining communication between patient and medical team. Although a wide variety of anesthetics and hypnotics have been used for awake craniotomy over the past several decades, the optimal drug for the procedure has yet to be determined. The purpose of this meta-analysis was to compare dexmedetomidine and propofol in terms of intraoperative adverse events (i.e., hypertension, hypotension, nausea, vomiting, respiratory depression), patient and surgeon satisfaction, and procedure duration. METHODS We searched PubMed, Google Scholar, and the Cochrane Library for relevant articles published between the inception of these databases and April of 2022. The systematic search yielded 781 articles. After screening, we excluded 778 articles. The remaining three articles reporting 138 patients were selected for meta-analysis. RESULTS This meta-analysis showed no statistically significant difference between propofol and dexmedetomidine related to intraoperative adverse events, patient satisfaction, or procedure duration. The only statistically significant result was surgeon satisfaction, which appeared to be higher in the dexmedetomidine group. CONCLUSIONS Further high-quality randomized and controlled trials are needed to find a preferred agent for intraoperative sedation in awake craniotomy.
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Affiliation(s)
- Dmitriy Viderman
- Nazarbayev University School of Medicine (NUSOM), Kerei, Zhanibek Khans Str. 5/1, Astana, Kazakhstan; Department of Anesthesiology, Intensive Care, and Pain Medicine, National Research Oncology Center, Kerey and Zhanibek Khans Str. 3, Astana 020000, Kazakhstan.
| | - Fatima Nabidollayeva
- School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan.
| | - Federico Bilotta
- Department of Anesthesia and Intensive Care, University La Sapienza, Rome, Italy.
| | - Yerkin G Abdildin
- School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave., Astana 010000, Kazakhstan.
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Hamed MA, Fargaly OS, Abdelghaffar RA, Moussa MA, Algyar MF. The role of dexmedetomidine as an adjuvant for high-thoracic erector spinae plane block for analgesia in shoulder arthroscopy; a randomized controlled study. BMC Anesthesiol 2023; 23:53. [PMID: 36793000 PMCID: PMC9930274 DOI: 10.1186/s12871-023-02014-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 02/07/2023] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND Management of postoperative pain after shoulder arthroscopy is an important issue. Dexmedetomidine, as an adjuvant, improves nerve block efficacy and decreases postoperative consumption of opioids. As a result, we designed this study to determine if adding dexmedetomidine to an erector spinae plane block (ESPB) that is guided by ultrasound (US) is beneficial for treating immediate postoperative pain following shoulder arthroscopy. METHODS This randomized controlled double-blind trial recruited 60 cases 18-65 years old of both sexes, American Society of Anesthesiologists (ASA) physical status I-II, scheduled for elective shoulder arthroscopy. Random allocation of 60 cases was done equally into two groups according to the solution injected in US-guided ESPB at T2 before general anesthetic induction. Group (ESPB): 20 ml 0.25% bupivacaine. Group (ESPB + DEX): 19 ml bupivacaine 0.25% + 1 mL dexmedetomidine 0.5 µg/kg. The primary outcome was The total rescue morphine consumption in the first 24 postoperative hours. RESULTS The mean intraoperative fentanyl consumption was significantly lower in the group (ESPB + DEX) compared to the group (ESPB) (82.86 ± 13.57 versus 100.74 ± 35.07, respectively, P = 0.015). The median (IQR) time of the 1st rescue analgesic request was significantly delayed in the group (ESPB + DEX) compared to group (ESPB) [18.5 (18.25-18.75) versus 12 (12-15.75), P = 0.044]. The number of cases that required morphine was significantly lower in the group (ESPB + DEX) than in the group (ESPB) (P = 0.012). The median (IQR) of total postoperative morphine consumption in 1st 24 h was significantly lower in the group (ESPB + DEX) compared to the group (ESPB) [0 (0-0) versus 0 (0-3), P = 0.021]. CONCLUSION The dexmedetomidine as an adjuvant to bupivacaine in ESPB produced adequate analgesia by reducing the intraoperative and postoperative opioid requirements in shoulder arthroscopy. TRIAL REGISTRATION This study is registered on ClinicalTrials.gov (NCT05165836; principal investigator: Mohammad Fouad Algyar; registration date: 21/12/ 2021).
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Affiliation(s)
- Mohamed Ahmed Hamed
- Department of Anesthesiology, Faculty of Medicine, Fayoum University, Fayoum, 63511, Egypt.
| | - Omar Sayed Fargaly
- grid.411170.20000 0004 0412 4537Department of Anesthesiology, Faculty of Medicine, Fayoum University, Fayoum, 63511 Egypt
| | - Rana Ahmed Abdelghaffar
- grid.411170.20000 0004 0412 4537Department of Anesthesiology, Faculty of Medicine, Fayoum University, Fayoum, 63511 Egypt
| | - Mohammed Ahmed Moussa
- grid.411170.20000 0004 0412 4537Department of Orthopedics, Faculty of Medicine, Fayoum University, Faiyum, Egypt
| | - Mohammad Fouad Algyar
- grid.411978.20000 0004 0578 3577Department of Anesthesiology, Surgical Intensive Care and Pain Medicine, Faculty of Medicine, Kafrelsheikh University, Kafr el-Sheikh, Egypt
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Tomasino B, Guarracino I, Pauletto G, Pez S, Ius T, Furlan D, Nilo A, Isola M, De Martino M, Mauro S, Verriello L, Lettieri C, Gigli GL, Valente M, Deana C, Skrap M. Performing real time neuropsychological testing during awake craniotomy: are dexmedetomidine or propofol the same? A preliminary report. J Neurooncol 2022; 160:707-716. [DOI: 10.1007/s11060-022-04191-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/03/2022] [Indexed: 11/16/2022]
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Thakkar K, Mariappan R, Prabhu K, Yadav B, Singh G. Comparison of Monitored Anesthesia Care with Propofol Versus Dexmedetomidine for Awake Craniotomy: A Retrospective study. JOURNAL OF NEUROANAESTHESIOLOGY AND CRITICAL CARE 2022. [DOI: 10.1055/s-0042-1748195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022] Open
Abstract
Abstract
Background Anesthetic agents used for awake craniotomy should be safe, short-acting, titratable, and provide an adequate level of sedation and analgesia, along with facilitating adequate neurological assessment during the functional testing. Our study aims to review the efficacy and safety profile, along with the potential for neurophysiological monitoring, of two commonly used anesthetic regimens, i.e., propofol and dexmedetomidine.
Methods After the Ethics Committee approval, a retrospective analysis of 51 patients who underwent awake craniotomy for brain tumor excision over a period of 7 years was done. Those who received monitored anesthesia care (MAC) were divided into two groups, namely, Group P for that received propofol, and Group D that received dexmedetomidine and their hemodynamic profile, perioperative complications, neuromonitoring techniques, and postoperative course was noted from the records.
Results A total of 31 patients were administered MAC with propofol and 20 with dexmedetomidine. The baseline demographic data, duration of surgery, intensive care unit (ICU), and hospital stay were comparable between the two. The hemodynamic profile as assessed by the heart rate and blood pressure was also comparable. The incidence of intraoperative seizures was found to be less in Group P, though. Episodes of transient desaturation were observed more in Group P (9.7%) than in Group D (5%), but none of the patients required conversion to general anesthesia. Direct cortical stimulation was satisfactorily elicited in 80% in Group P and 85% in Group D.
Conclusions MAC with propofol and dexmedetomidine are acceptable techniques with comparable hemodynamic profile, intraoperative and postoperative complications, and potential for neurophysiological monitoring.
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Affiliation(s)
- Keta Thakkar
- Department of Neuroanaesthesia, Christian Medical college, Vellore, Tamil Nadu, India
| | - Ramamani Mariappan
- Department of Neuroanaesthesia, Christian Medical college, Vellore, Tamil Nadu, India
| | - Krishna Prabhu
- Department of Neurosurgery, Christian Medical college, Vellore, Tamil Nadu, India
| | - Bijesh Yadav
- Department of Biostatistics, Christian Medical College, Vellore, Tamil Nadu, India
| | - Georgene Singh
- Department of Neuroanaesthesia, Christian Medical college, Vellore, Tamil Nadu, India
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9
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Haouzi P, Tubbs N. Effects of fentanyl overdose-induced muscle rigidity and dexmedetomidine on respiratory mechanics and pulmonary gas exchange in sedated rats. J Appl Physiol (1985) 2022; 132:1407-1422. [PMID: 35421320 DOI: 10.1152/japplphysiol.00819.2021] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The objective of our study was to establish in sedated rats the consequences of high-dose fentanyl-induced acute muscle rigidity on the mechanical properties of the respiratory system and on the metabolic rate. Doses of fentanyl that we have previously shown to produce persistent rigidity of the muscles of the limbs and trunk in the rat (150 -300 microg/kg iv), were administered in 23 volume-controlled mechanically ventilated and sedated rats. The effects of a low dose of the FDA approved central alpha-2 agonist, dexmedetomidine (3 microg/kg iv), which has been suggested to oppose fentanyl-induced muscle rigidity, were determined after fentanyl administration. Fentanyl produced a significant decrease in Crs in the 23 rats that were studied. In 13 rats, an abrupt response occurred within 90 seconds, consisting in rapid rhythmic contractions of most skeletal muscles, that were replaced by persistent tonic/tetanic contractions leading a significant decrease of Crs (from 0.51 ± 0.11 ml/cmH2O to 0.36 ± 0.08 ml/cmH2O, 3 minutes after fentanyl injection). In the other 10 animals, a Crs progressively decreased to 0.26 ± 0.06 ml/cmH2O at 30 minutes. There was a significant rise in V̇O2 during muscle tonic contractions (from 8.48 ± 4.31 to 11.29 ± 2.57 ml/min), which contributed to a significant hypoxemia, despite ventilation being held constant. Dexmedetomidine provoked a significant and rapid increase in Crs towards baseline levels, while decreasing the metabolic rate and restoring normoxemia. We propose that the changes in respiratory mechanics and metabolism produced by opioid-induced muscle rigidity contribute to fentanyl lethality.
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Affiliation(s)
- Philippe Haouzi
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Pennsylvania State University, College of Medicine, Hershey, PA, United States
| | - Nicole Tubbs
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Pennsylvania State University, College of Medicine, Hershey, PA, United States
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Neurosurgery. Perioper Med (Lond) 2022. [DOI: 10.1016/b978-0-323-56724-4.00037-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Elshal MM, Gamal RM, Ahmed AM, Gouda NM, Abdelhaq MM. Efficacy of adding dexmedetomidine as adjuvant with bupivacaine in ultrasound-guided erector spinae plane block for post thoracotomy pain: Randomized controlled study. EGYPTIAN JOURNAL OF ANAESTHESIA 2021. [DOI: 10.1080/11101849.2021.1975973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
| | - Reham Mohamed Gamal
- Anesthesia and Pain Relief, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Aya Mohamed Ahmed
- Anesthesia and Pain Relief, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Nevine Mahmoud Gouda
- Anesthesia, Surgical ICU and Pain Management, Faculty of Medicine, Cairo University, Cairo, Egypt
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Rahimpour S, Haglund MM, Friedman AH, Duffau H. History of awake mapping and speech and language localization: from modules to networks. Neurosurg Focus 2020; 47:E4. [PMID: 31473677 DOI: 10.3171/2019.7.focus19347] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 07/08/2019] [Indexed: 11/06/2022]
Abstract
Lesion-symptom correlations shaped the early understanding of cortical localization. The classic Broca-Wernicke model of cortical speech and language organization underwent a paradigm shift in large part due to advances in brain mapping techniques. This initially started by demonstrating that the cortex was excitable. Later, advancements in neuroanesthesia led to awake surgery for epilepsy focus and tumor resection, providing neurosurgeons with a means of studying cortical and subcortical pathways to understand neural architecture and obtain maximal resection while avoiding so-called critical structures. The aim of this historical review is to highlight the essential role of direct electrical stimulation and cortical-subcortical mapping and the advancements it has made to our understanding of speech and language cortical organization. Specifically, using cortical and subcortical mapping, neurosurgeons shifted from a localist view in which the brain is composed of rigid functional modules to one of dynamic and integrative large-scale networks consisting of interconnected cortical subregions.
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Affiliation(s)
- Shervin Rahimpour
- 1Department of Neurosurgery, Duke University Hospital, Duke University Medical Center, Durham, North Carolina; and
| | - Michael M Haglund
- 1Department of Neurosurgery, Duke University Hospital, Duke University Medical Center, Durham, North Carolina; and
| | - Allan H Friedman
- 1Department of Neurosurgery, Duke University Hospital, Duke University Medical Center, Durham, North Carolina; and
| | - Hugues Duffau
- 2Department of Neurosurgery, Hôpital Gui de Chauliac, Montpellier, France
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Effects of Dexmedetomidine and ACE Genotype on Cardiovascular Response During the Decannulation Period of General Anesthesia in Patients With Essential Hypertension. Clin Ther 2020; 42:1992-2000. [PMID: 32839029 DOI: 10.1016/j.clinthera.2020.07.012] [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: 03/31/2020] [Revised: 07/15/2020] [Accepted: 07/17/2020] [Indexed: 11/23/2022]
Abstract
PURPOSE This study investigated the effects of dexmedetomidine on cardiovascular response during the decannulation period of general anesthesia in patients with different genotypes of angiotensin-converting enzyme (ACE) and essential hypertension. METHODS The present study enrolled patients with essential hypertension and American Society of Anesthesiologists class II or III who were scheduled to undergo abdominal surgery under general anesthesia. Patients were assigned to 1 of 6 groups according to ACE genotype, as detected by polymerase chain reaction-restriction fragment length polymorphism, as follows: DD; ID; II; and DD, ID, and II each with dexmedetomidine (Dex). Dexmedetomidine was intravenously infused at 0.5 μg/kg/h for 30 min before the end of surgery in groups DD (Dex), ID (Dex), and II(Dex). Anesthesia was induced and maintained by the same anesthetics in all patients. Systolic and diastolic blood pressure, heart rate (HR), ECG, and rate-pressure product were recorded before anesthesia induction; at 30 min before the end of surgery; at the end of surgery; and at 0, 1.5, 5, and 10 min after extubation. FINDINGS A total of 210 patients were enrolled (n = 35 per genotype). After extubation, systolic and diastolic blood pressure, HR, and RPP were increased markedly from baseline in groups DD, ID, and II; the increases were greater in groups DD and ID than in group II. No significant changes in blood pressure, HR, or RPP were found, and proper sedative was achieved in groups DD (Dex), ID (Dex), and II(Dex). The prevalences of cardiac arrhythmia were higher in groups DD and ID than in groups II, DD (Dex), ID (Dex), and II(Dex). IMPLICATIONS Patients essential hypertension and the ACE D allele had a strong hemodynamic response to tracheal extubation, on which dexmedetomidine was found to have both a prevention and treatment effect.
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Aabedi AA, Ahn E, Kakaizada S, Valdivia C, Young JS, Hervey-Jumper H, Zhang E, Sagher O, Weissman DH, Brang D, Hervey-Jumper SL. Assessment of wakefulness during awake craniotomy to predict intraoperative language performance. J Neurosurg 2020; 132:1930-1937. [PMID: 31151102 PMCID: PMC6885096 DOI: 10.3171/2019.2.jns183486] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 02/19/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Maximal safe tumor resection in language areas of the brain relies on a patient's ability to perform intraoperative language tasks. Assessing the performance of these tasks during awake craniotomies allows the neurosurgeon to identify and preserve brain regions that are critical for language processing. However, receiving sedation and analgesia just prior to experiencing an awake craniotomy may reduce a patient's wakefulness, leading to transient language and/or cognitive impairments that do not completely subside before language testing begins. At present, the degree to which wakefulness influences intraoperative language task performance is unclear. Therefore, the authors sought to determine whether any of 5 brief measures of wakefulness predicts such performance during awake craniotomies for glioma resection. METHODS The authors recruited 21 patients with dominant hemisphere low- and high-grade gliomas. Each patient performed baseline wakefulness measures in addition to picture-naming and text-reading language tasks 24 hours before undergoing an awake craniotomy. The patients performed these same tasks again in the operating room following the cessation of anesthesia medications. The authors then conducted statistical analyses to investigate potential relationships between wakefulness measures and language task performance. RESULTS Relative to baseline, performance on 3 of the 4 objective wakefulness measures (rapid counting, button pressing, and vigilance) declined in the operating room. Moreover, these declines appeared in the complete absence of self-reported changes in arousal. Performance on language tasks similarly declined in the intraoperative setting, with patients experiencing greater declines in picture naming than in text reading. Finally, performance declines on rapid counting and vigilance wakefulness tasks predicted performance declines on the picture-naming task. CONCLUSIONS Current subjective methods for assessing wakefulness during awake craniotomies may be insufficient. The administration of objective measures of wakefulness just prior to language task administration may help to ensure that patients are ready for testing. It may also allow neurosurgeons to identify patients who are at risk for poor intraoperative performance.
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Affiliation(s)
- Alexander A. Aabedi
- Department of Neurological Surgery, University of California, San Francisco, California
| | - EunSeon Ahn
- Departments of Psychology, University of Michigan, Ann Arbor, Michigan
| | - Sofia Kakaizada
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Claudia Valdivia
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Jacob S. Young
- Department of Neurological Surgery, University of California, San Francisco, California
| | | | - Eric Zhang
- Department of Neurological Surgery, University of California, San Francisco, California
| | - Oren Sagher
- Departments of Neurological Surgery, University of Michigan, Ann Arbor, Michigan
| | | | - David Brang
- Departments of Psychology, University of Michigan, Ann Arbor, Michigan
| | - Shawn L. Hervey-Jumper
- Department of Neurological Surgery, University of California, San Francisco, California
- Departments of Neurological Surgery, University of Michigan, Ann Arbor, Michigan
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Successful Anesthetic Management Using Dexmedetomidine Sequentially with Propofol in the Asleep-Awake-Asleep Technique for Elderly Patients Undergoing Awake Craniotomy. Case Rep Anesthesiol 2020; 2020:6795363. [PMID: 32280546 PMCID: PMC7139854 DOI: 10.1155/2020/6795363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 01/21/2020] [Accepted: 03/05/2020] [Indexed: 11/17/2022] Open
Abstract
Anesthesiologists should supply proper sedation and high-quality awakening in awake craniotomy anesthesia. At our institution, we perform an asleep-awake-asleep technique for awake craniotomy anesthesia by using short-acting anesthetic drugs, such as propofol and remifentanil. However, elderly patients do not wake adequately in our normal protocol and hence are unable to complete the required neurological tasks. In this case series, we present the anesthetic management of three elderly patients with sequent use of propofol and dexmedetomidine as sedative agents for awake craniotomy. We hypothesized that this anesthetic protocol is advantageous in awake craniotomy management. For the awake phase, all patients were adequately awake and performed neurological tasks without adverse events and agitation. The use of dexmedetomidine sequentially with propofol in an asleep-awake-asleep technique for awake craniotomy in elderly patients might shorten the time to awakening and provide clear awakening.
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Awake Craniotomy in a Patient with Previously Diagnosed Post-Traumatic Stress Disorder. World Neurosurg 2020; 139:7-11. [PMID: 32278819 DOI: 10.1016/j.wneu.2020.03.194] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 11/23/2022]
Abstract
BACKGROUND Awake craniotomy (AC) with brain mapping has been successfully used for the resection of lesions located in or near eloquent areas of the brain. The selection process includes a thorough presurgical evaluation to determine candidates suitable for the procedure. Psychiatric disorders including post-traumatic stress disorder (PTSD) are considered potential contraindications for this type of surgery because these patients may be less cooperative to tolerate AC. Here we present the management of a patient with PTSD who underwent an AC using a multidisciplinary team for removal of a dominant hemisphere low-grade insular glioma with speech, motor, and cognitive mapping. CASE DESCRIPTION A 34-year-old right-handed male military veteran with a previous history of PTSD was scheduled for a left AC for resection of a low-grade insular glioma. He underwent preoperative neurocognitive assessment with a neuropsychologist and clinic visit with a neurosurgeon to characterize his PTSD and potential triggers, explain the procedure in a stepwise fashion, and address any concerns. The intraoperative environment was modified to minimize triggering stimuli, and an asleep-awake-asleep anesthetic protocol was followed. The patient tolerated the procedure well without any postoperative neurologic deficits including cognitive deficits. At 1-month follow-up, he denied any worsening of his PTSD symptoms and recalls the AC as a positive experience. CONCLUSIONS With a multidisciplinary team, adequate preoperative education, detailed clinical interview to identify triggers, and a controlled intraoperative environment, awake surgery can be carried out safely in a patient with PTSD.
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Suresh V. Noise during bone drilling – An unaddressed patient concern during awake craniotomy. Brain Circ 2020; 6:219-220. [PMID: 33210050 PMCID: PMC7646386 DOI: 10.4103/bc.bc_6_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 06/29/2020] [Accepted: 08/25/2020] [Indexed: 11/26/2022] Open
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Abstract
Technological breakthroughs along with modern application of awake craniotomy and new neuroanesthesia protocols have led to a progressive development in outpatient brain tumor surgery and improved surgical outcomes. As a result, outpatient neurosurgery has become a standard of care at the authors' center due to its clinical benefits and impact on patient recovery and overall satisfaction. On the other hand, the financial savings derived from its application is also another favorable factor exerting influence on patients, health care systems, and society. Although validated several years ago and with recent data supporting its application, outpatient brain tumor surgery has not gained the traction that it deserves, based on scientific skepticism and perceived potential for medicolegal issues. The goal of this review, based on the available literature and the senior author's experience in outpatient brain tumor surgery, was to evaluate the most important aspects regarding indications, clinical outcomes, economic burden, and patient perceptions.
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Shen E, Calandra C, Geralemou S, Page C, Davis R, Andraous W, Mikell C. The Stony Brook awake craniotomy protocol: A technical note. J Clin Neurosci 2019; 67:221-225. [PMID: 31279700 DOI: 10.1016/j.jocn.2019.06.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 05/21/2019] [Accepted: 06/21/2019] [Indexed: 12/16/2022]
Abstract
Most current awake craniotomy techniques utilize unnecessarily complicated airway management, and cause discomfort to the patients during the awake phase of the surgery. Our manuscript is written to discuss the neurosurgical and anesthetic techniques that we have developed to optimize awake craniotomy techniques at Stony Brook University Medical Center. We used the frameless Brainlab™ skull-mounted array for stereotactic navigation. Rigid fixation of the skull was avoided. General anesthesia with established airway was used during the "asleep" phase of the surgery. Following the removal of the bone flap and the opening of the dura, the patients were woken up, and the established airway was removed. Cortical mapping was performed to establish a safe entry zone for tumor removal. While the tumors were being removed, we continued motor examination and casual conversation with the patients to ensure safety. Patients were sedated during the remaining phase of the surgery until skin closure. No patient exhibited any neurological deficits or adverse anesthesia outcomes during the postoperative period. The protocol we developed avoids rigid skull fixation and emphasizes flexible intraoperative planning, thereby maximizing patient and physician comfort while allowing for successful tumor resection.
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Affiliation(s)
- Erica Shen
- Stony Brook University School of Medicine, United States
| | - Colleen Calandra
- Department of Neurosurgery, Stony Brook University Hospital, United States
| | - Sofia Geralemou
- Department of Anesthesiology, Stony Brook University Hospital, United States
| | - Christopher Page
- Department of Anesthesiology, Stony Brook University Hospital, United States
| | - Raphael Davis
- Department of Neurosurgery, Stony Brook University Hospital, United States
| | - Wesam Andraous
- Department of Anesthesiology, Stony Brook University Hospital, United States
| | - Charles Mikell
- Department of Neurosurgery, Stony Brook University Hospital, United States.
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Suero Molina E, Schipmann S, Mueller I, Wölfer J, Ewelt C, Maas M, Brokinkel B, Stummer W. Conscious sedation with dexmedetomidine compared with asleep-awake-asleep craniotomies in glioma surgery: an analysis of 180 patients. J Neurosurg 2018; 129:1223-1230. [PMID: 29328000 DOI: 10.3171/2017.7.jns171312] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 07/14/2017] [Indexed: 01/31/2023]
Abstract
OBJECTIVEAwake craniotomies have become a feasible tool over time to treat brain tumors located in eloquent regions. Different techniques have been applied in neurooncology centers. Both "asleep-awake-asleep" (asleep) and "conscious sedation" were used subsequently at the authors' neurosurgical department. Since 2013, the authors have only performed conscious sedation surgeries, predominantly using the α2-receptor agonist dexmedetomidine as the anesthetic drug. The aim of this study was to compare both mentioned techniques and evaluate the clinical use of dexmedetomidine in the setting of awake craniotomies for glioma surgery.METHODSThe authors retrospectively analyzed patients who underwent operations either under the asleep condition using propofol-remifentanil or under conscious sedation conditions using dexmedetomidine infusions. In the asleep group patients were intubated with a laryngeal mask and extubated for the assessment period. Adverse events, as well as applied drugs with doses and frequency of usage, were recorded.RESULTSFrom 224 awake surgeries between 2009 and 2015, 180 were performed for the resection of gliomas and included in the study. In the conscious sedation group (n = 75) significantly fewer opiates (p < 0.001) and vasoactive (p < 0.001) and antihypertensive (p < 0.001) drugs were used in comparison with the asleep group (n = 105). Furthermore, the postoperative length of stay (p < 0.001) and the surgical duration (p < 0.001) were significantly lower in the conscious sedation group.CONCLUSIONSUse of dexmedetomidine creates excellent conditions for awake surgeries. It sedates moderately and acts as an anxiolytic. Thus, after ceasing infusion it enables quick and reliable clinical neurological assessment of patients. This might lead to reducing the amount of administered antihypertensive and vasoactive drugs as well as the length of hospitalization, while likely ensuring more rapid surgery.
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Affiliation(s)
| | | | | | | | | | - Matthias Maas
- 2Department of Anaesthesiology, Intensive Care and Pain Therapy, University Hospital of Münster, Germany
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Foster CH, Morone PJ, Cohen-Gadol A. Awake craniotomy in glioma surgery: is it necessary? J Neurosurg Sci 2018; 63:162-178. [PMID: 30259721 DOI: 10.23736/s0390-5616.18.04590-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
INTRODUCTION The awake craniotomy has evolved from its humble beginnings in ancient cultures to become one of the most eloquent modern neurosurgical procedures. The development of intraoperative mapping techniques like direct electrostimulation of the cortex and subcortical white matter have further argued for its place in the neurosurgeon's armamentarium. Yet the suitability of the awake craniotomy with intraoperative functional mapping (ACWM) to optimize oncofunctional balance after peri-eloquent glioma resection continues to be a topic of active investigation as new methods of intraoperative monitoring and some unfavorable outcome data question its necessity. EVIDENCE ACQUISITION The neurosurgery and anesthesiology literatures were scoured for English-language studies that analyzed or reviewed the ACWM or its components as applied to glioma surgery via the PubMed, ClinicalKey, and OvidMEDLINE® databases or via direct online searches of journal archives. EVIDENCE SYNTHESIS Information on background, conceptualization, standard techniques, and outcomes of the ACWM were provided and compared. We parceled the procedure into its components and qualitatively described positive and negative outcome data for each. Findings were presented in the context of each study without attempt at quantitative analysis or reconciliation of heterogeneity between studies. Certain illustrative studies were highlighted throughout the review. Overarching conclusions were drawn based on level of evidence, expert opinion, and predominate concordance of data across studies in the literature. CONCLUSIONS Most investigators and studies agree that the ACWM is the best currently available approach to optimize oncofunctional balance in this difficult-to-treat patient population. This qualitative review synthesizes the most currently available data on the topic to provide contemporaneous insight into how and why the ACWM has become a favorite operation of neurosurgeons worldwide for the resection of gliomas from eloquent brain.
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Affiliation(s)
- Chase H Foster
- Department of Neurological Surgery, George Washington University Hospital, Washington D.C., USA -
| | - Peter J Morone
- Department of Neurological Surgery, Vanderbilt University Medical Center, Vanderbilt University, Nashville, TN, USA
| | - Aaron Cohen-Gadol
- Goodman Campbell Brain and Spine, Department of Neurological Surgery, Indiana University, Indianapolis, IN, USA
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McAuliffe N, Nicholson S, Rigamonti A, Hare GMT, Cusimano M, Garavaglia M, Pshonyak I, Das S. Awake craniotomy using dexmedetomidine and scalp blocks: a retrospective cohort study. Can J Anaesth 2018; 65:1129-1137. [DOI: 10.1007/s12630-018-1178-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 04/21/2018] [Accepted: 04/23/2018] [Indexed: 12/24/2022] Open
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Abstract
Patient with refractory seizure may undergo awake craniotomy when the area to be resected is immediately adjacent to eloquent cortex. An awake craniotomy in a 30-year-old man was conducted using a scalp block, dexmedetomidine, and remifentanil infusion without any airway device throughout the procedure. Dexmedetomidine administered at a loading dose of 1 μg/kg and maintenance dose of 0.2-0.7 μg/kg/h. Remifentanil dose was 0.02 μg/kg/min. The patient remained comfortable and hemodynamically stable throughout the procedure. Cortical electrical stimulation revealed motor cortex overlapped with seizure focus. So that surgical procedure was limited to subpial resection of the epileptic focus. Dexmedetomidine with concurrent scalp block appears to be an useful sedation for awake craniotomy when sophisticated neurological test is required.
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Affiliation(s)
- Mohammadali Attari
- Anesthesiology and Critical Care Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Kamran Hozhabri
- Department of Anesthesiology, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
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Su S, Ren C, Zhang H, Liu Z, Zhang Z. The Opioid-Sparing Effect of Perioperative Dexmedetomidine Plus Sufentanil Infusion during Neurosurgery: A Retrospective Study. Front Pharmacol 2016; 7:407. [PMID: 27833559 PMCID: PMC5080288 DOI: 10.3389/fphar.2016.00407] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 10/13/2016] [Indexed: 12/20/2022] Open
Abstract
Background: Approximately 60% of patients experience moderate-to-severe pain after neurosurgery, which primarily occurs in the first 24–72 h. Despite this, improved postoperative analgesia solutions after neurosurgery have not yet been devised. This retrospective study was conducted to evaluate the effect of intra- and post-operative infusions of dexmedetomidine (DEX) plus sufentanil on the quality of postoperative analgesia in patients undergoing neurosurgery. Methods: One hundred and sixty-three post-neurosurgery patients were divided into two groups: Group D (DEX infusion at 0.5 μg·kg−1 for 10 min, then adjusted to 0.3 μg·kg−1·h−1 until incision suturing) and Group ND (no DEX infusion during surgery). Patient-controlled analgesia was administered for 72 h after surgery (Group D: sufentanil 0.02 μg·kg−1·h−1 plus DEX 0.02 μg·kg−1·h−1, Group ND: sufentanil 0.02 μg·kg−1·h−1) in this retrospective study. The primary outcome measure was postoperative sufentanil consumption. Hemodynamics, requirement of narcotic, and vasoactive drugs, recovery time and the incidence of concerning adverse effects were recorded. Pain intensity [Visual Analogue Scale (VAS)], Ramsay sedation scale (RSS) and Bruggemann comfort scale (BCS) were also evaluated at 1, 4, 8, 12, 24, 48, and 72 h after surgery. Results: Postoperative sufentanil consumption was significantly lower in Group D during the first 72 h after surgery (P < 0.05). Compared with Group ND, heart rate (HR) in Group D was significantly decreased from intubation to 20 min after arriving at post anesthesia care unit (PACU), while mean arterial pressure (MAP) in Group D was significantly decreased from intubation to 5 min after arriving at PACU (P < 0.05). The intraoperative requirements for sevoflurane, remifentanil, and fentanyl were approximately 35% less in Group D compared with Group ND. VAS at rest at 1, 4, and 8 h and with cough at 12, 24, 48, and 72 h after surgery were significantly lower in Group D (P < 0.05). Compared with Group ND, patients in Group D showed lower levels of overall incidence of tachycardia, hypertension, nausea, and vomiting (P < 0.05). There were no significant differences between the two groups in terms of baseline clinical characteristics, recovery time, RSS, and BCS (P > 0.05). Conclusions: DEX (0.02 μg·kg−1·h−1) plus sufentanil (0.02 μg·kg−1·h−1) could reduce postoperative opioid consumption and concerning adverse adverse effects, while improving pain scores. However, it did not influence RSS and BCS during the first 72 h after neurosurgery.
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Affiliation(s)
- Shiyu Su
- Department of Anaesthesiology, The Fifth People's Hospital of Jinan Jinan, China
| | - Chunguang Ren
- Department of Anaesthesiology, Liaocheng People's Hospital Liaocheng, China
| | - Hongquan Zhang
- Department of Anaesthesiology, Liaocheng People's Hospital Liaocheng, China
| | - Zhong Liu
- Department of Anaesthesiology, Liaocheng People's Hospital Liaocheng, China
| | - Zongwang Zhang
- Department of Anaesthesiology, Liaocheng People's Hospital Liaocheng, China
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Li A, Yuen VMY, Goulay-Dufay S, Kwok PCL. Pharmacokinetics and pharmacodynamics of dexmedetomidine. Drug Dev Ind Pharm 2016; 42:1917-1927. [PMID: 27595299 DOI: 10.1080/03639045.2016.1232727] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Dexmedetomidine is an alpha-2 adrenoceptor agonist and has been used as a general anesthetic, sedative and analgesic for about 30 years. The aim of this paper is to review the pharmacokinetics and pharmacodynamics of dexmedetomidine, evaluate physiological factors that may affect the pharmacokinetics of dexmedetomidine, and summarize the pharmacodynamics of dexmedetomidine at different plasma levels. The pharmacokinetic parameters reported in previous studies according to noncompartmental analyses or population modeling results are compared. We concluded that the pharmacokinetic profile can be adequately described by a two-compartment model in population pharmacokinetic modeling. Body weight, height, albumin level, cardiac output, disease condition and other factors were considered to have significant influence on the clearance and/or distribution volume in different population pharmacokinetic models. The pharmacological effects of dexmedetomidine, such as sedation, heart rate reduction and biphasic change of blood pressure, vary at different plasma levels. These findings provide a reference for individualizing the dose of dexmedetomidine and achieving the desired pharmacological effects in clinical applications.
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Affiliation(s)
- Aiwei Li
- a Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine , The University of Hong Kong , Pokfulam , Hong Kong SAR , China
| | - Vivian Man Ying Yuen
- b Department of Anesthesiology , University of Hong Kong Shenzhen Hospital , Futian , Guangdong , Shenzhen , China
| | - Sophie Goulay-Dufay
- c Département Laboratoires, AGEPS , Assistance Publique des Hôpitaux de Paris , Paris , France
| | - Philip Chi Lip Kwok
- a Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine , The University of Hong Kong , Pokfulam , Hong Kong SAR , China
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Goettel N, Bharadwaj S, Venkatraghavan L, Mehta J, Bernstein M, Manninen P. Dexmedetomidine vs propofol-remifentanil conscious sedation for awake craniotomy: a prospective randomized controlled trial † †Euroanaesthesia Congress, May 31, 2015, Berlin, Germany, and Canadian Anesthesiologists’ Society Annual Meeting, June 20, 2015, Ottawa, Canada. ‡ ‡This Article is accompanied by Editorial Aew113. Br J Anaesth 2016; 116:811-21. [DOI: 10.1093/bja/aew024] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2016] [Indexed: 12/23/2022] Open
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Stevanovic A, Rossaint R, Veldeman M, Bilotta F, Coburn M. Anaesthesia Management for Awake Craniotomy: Systematic Review and Meta-Analysis. PLoS One 2016; 11:e0156448. [PMID: 27228013 PMCID: PMC4882028 DOI: 10.1371/journal.pone.0156448] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Accepted: 05/13/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Awake craniotomy (AC) renders an expanded role in functional neurosurgery. Yet, evidence for optimal anaesthesia management remains limited. We aimed to summarise the latest clinical evidence of AC anaesthesia management and explore the relationship of AC failures on the used anaesthesia techniques. METHODS Two authors performed independently a systematic search of English articles in PubMed and EMBASE database 1/2007-12/2015. Search included randomised controlled trials (RCTs), observational trials, and case reports (n>4 cases), which reported anaesthetic approach for AC and at least one of our pre-specified outcomes: intraoperative seizures, hypoxia, arterial hypertension, nausea and vomiting, neurological dysfunction, conversion into general anaesthesia and failure of AC. Random effects meta-analysis was used to estimate event rates for four outcomes. Relationship with anaesthesia technique was explored using logistic meta-regression, calculating the odds ratios (OR) and 95% confidence intervals [95%CI]. RESULTS We have included forty-seven studies. Eighteen reported asleep-awake-asleep technique (SAS), twenty-seven monitored anaesthesia care (MAC), one reported both and one used the awake-awake-awake technique (AAA). Proportions of AC failures, intraoperative seizures, new neurological dysfunction and conversion into general anaesthesia (GA) were 2% [95%CI:1-3], 8% [95%CI:6-11], 17% [95%CI:12-23] and 2% [95%CI:2-3], respectively. Meta-regression of SAS and MAC technique did not reveal any relevant differences between outcomes explained by the technique, except for conversion into GA. Estimated OR comparing SAS to MAC for AC failures was 0.98 [95%CI:0.36-2.69], 1.01 [95%CI:0.52-1.88] for seizures, 1.66 [95%CI:1.35-3.70] for new neurological dysfunction and 2.17 [95%CI:1.22-3.85] for conversion into GA. The latter result has to be interpreted cautiously. It is based on one retrospective high-risk of bias study and significance was abolished in a sensitivity analysis of only prospectively conducted studies. CONCLUSION SAS and MAC techniques were feasible and safe, whereas data for AAA technique are limited. Large RCTs are required to prove superiority of one anaesthetic regime for AC.
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Affiliation(s)
- Ana Stevanovic
- Department of Anaesthesiology, University Hospital RWTH Aachen, Aachen, Germany
| | - Rolf Rossaint
- Department of Anaesthesiology, University Hospital RWTH Aachen, Aachen, Germany
| | - Michael Veldeman
- Department of Anaesthesiology, University Hospital RWTH Aachen, Aachen, Germany
- Department of Neurosurgery, University Hospital RWTH Aachen, Aachen, Germany
| | - Federico Bilotta
- Department of Anaesthesiology, Critical Care and Pain Medicine, University of Rome “La Sapienza”, Rome, Italy
| | - Mark Coburn
- Department of Anaesthesiology, University Hospital RWTH Aachen, Aachen, Germany
- * E-mail:
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Hervey-Jumper SL, Berger MS. Maximizing safe resection of low- and high-grade glioma. J Neurooncol 2016; 130:269-282. [PMID: 27174197 DOI: 10.1007/s11060-016-2110-4] [Citation(s) in RCA: 304] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 03/23/2016] [Indexed: 10/21/2022]
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Conscious sedation and local anesthesia for patients undergoing neurotologic and complex otologic procedures. Otol Neurotol 2015; 35:e277-85. [PMID: 25226374 DOI: 10.1097/mao.0000000000000576] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Is conscious sedation an effective, safe, and efficient anesthetic choice in patients undergoing select neurotologic and otologic procedures? STUDY DESIGN Retrospective case review. SETTING Tertiary referral center. PATIENTS Six patients underwent eight neurotologic procedures including cerebrospinal fluid leak and encephalocele repair, and primary and revision cochlear implant surgery. Patients were deemed poor candidates for general anesthesia secondary to medical comorbidities. These were compared to 11 control patients who underwent same procedures under general anesthesia with intubation. INTERVENTION Dexmedetomidine infusion was utilized as the primary agent for conscious sedation in this high-risk patient population because, unlike other commonly used sedatives, it preserves normal respirations while providing adequate analgesia. MAIN OUTCOME MEASURES Preoperative Physiological and Operative Severity Score for the enUmeration of Mortality and Morbidity (P-POSSUM) scores were calculated for the study group. We measured total anesthesia, and perioperative and recovery times. Cost of anesthetic agents was considered and any adverse effects were noted. Patient satisfaction with the operative experience was assessed with telephone surveys. RESULTS P-POSSUM scores were high for the study group. Postoperative anesthesia was shorter for the study patients undergoing conscious sedation. Difference in cost of anesthetic agents was negligible. The adverse effects were few and as expected for the type of procedure. Patients reported satisfaction and comfort with their operative experience. CONCLUSION Select neurotologic and otologic procedures can be safely, effectively, and efficiently performed under conscious sedation with dexmedetomidine infusion as the primary anesthetic choice for patients who are deemed poor medical candidates for general endotracheal anesthesia.
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Hervey-Jumper SL, Li J, Lau D, Molinaro AM, Perry DW, Meng L, Berger MS. Awake craniotomy to maximize glioma resection: methods and technical nuances over a 27-year period. J Neurosurg 2015; 123:325-39. [DOI: 10.3171/2014.10.jns141520] [Citation(s) in RCA: 244] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT
Awake craniotomy is currently a useful surgical approach to help identify and preserve functional areas during cortical and subcortical tumor resections. Methodologies have evolved over time to maximize patient safety and minimize morbidity using this technique. The goal of this study is to analyze a single surgeon's experience and the evolving methodology of awake language and sensorimotor mapping for glioma surgery.
METHODS
The authors retrospectively studied patients undergoing awake brain tumor surgery between 1986 and 2014. Operations for the initial 248 patients (1986–1997) were completed at the University of Washington, and the subsequent surgeries in 611 patients (1997–2014) were completed at the University of California, San Francisco. Perioperative risk factors and complications were assessed using the latter 611 cases.
RESULTS
The median patient age was 42 years (range 13–84 years). Sixty percent of patients had Karnofsky Performance Status (KPS) scores of 90–100, and 40% had KPS scores less than 80. Fifty-five percent of patients underwent surgery for high-grade gliomas, 42% for low-grade gliomas, 1% for metastatic lesions, and 2% for other lesions (cortical dysplasia, encephalitis, necrosis, abscess, and hemangioma). The majority of patients were in American Society of Anesthesiologists (ASA) Class 1 or 2 (mild systemic disease); however, patients with severe systemic disease were not excluded from awake brain tumor surgery and represented 15% of study participants. Laryngeal mask airway was used in 8 patients (1%) and was most commonly used for large vascular tumors with more than 2 cm of mass effect. The most common sedation regimen was propofol plus remifentanil (54%); however, 42% of patients required an adjustment to the initial sedation regimen before skin incision due to patient intolerance. Mannitol was used in 54% of cases. Twelve percent of patients were active smokers at the time of surgery, which did not impact completion of the intraoperative mapping procedure. Stimulation-induced seizures occurred in 3% of patients and were rapidly terminated with ice-cold Ringer's solution. Preoperative seizure history and tumor location were associated with an increased incidence of stimulation-induced seizures. Mapping was aborted in 3 cases (0.5%) due to intraoperative seizures (2 cases) and patient emotional intolerance (1 case). The overall perioperative complication rate was 10%.
CONCLUSIONS
Based on the current best practice described here and developed from multiple regimens used over a 27-year period, it is concluded that awake brain tumor surgery can be safely performed with extremely low complication and failure rates regardless of ASA classification; body mass index; smoking status; psychiatric or emotional history; seizure frequency and duration; and tumor site, size, and pathology.
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Affiliation(s)
| | - Jing Li
- Departments of 1Neurological Surgery and
| | - Darryl Lau
- Departments of 1Neurological Surgery and
| | | | - David W. Perry
- 2Surgical Neurophysiology, University of California, San Francisco, California
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Subramanian H, Sudhakar B, Vyapaka P, Venu GB. Anesthetic challenges of decompressive craniotomy for the right frontal lobe abscess in a patient with Ebstein's anomaly: A rare case report. Anesth Essays Res 2015; 6:84-6. [PMID: 25885510 PMCID: PMC4173423 DOI: 10.4103/0259-1162.103383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Ebstein's anomaly is a rare congenital heart disease characterized by downward displacement of the tricuspid valve, atrialization of right ventricle, enlarged right atrium with tricuspid regurgitation, or stenosis. It is often associated with atrial septal defect (ASD) or patent foramen ovale with right to left shunt. It has a varied clinical presentation and can manifest as cyanosis, ventricular, or supraventricular arrhythmias and recurrent episodes of congestive heart failure. We describe the anesthetic management of a female patient with Ebstein's anomaly who had right frontal lobe abscess due to paradoxical embolism for decompressive craniotomy.
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Affiliation(s)
- H Subramanian
- Department of Anaesthesiology and Critical Care, Dr. Pinnamaneni Sidhartha Institute of Medical Sciences and Research Foundation, Chinnaoutapalli, India
| | - B Sudhakar
- Department of Anaesthesiology and Critical Care, Dr. Pinnamaneni Sidhartha Institute of Medical Sciences and Research Foundation, Chinnaoutapalli, India
| | - Pallavi Vyapaka
- Department of Anaesthesiology and Critical Care, Dr. Pinnamaneni Sidhartha Institute of Medical Sciences and Research Foundation, Chinnaoutapalli, India
| | - Gopalan B Venu
- Department of Anaesthesiology and Critical Care, Dr. Pinnamaneni Sidhartha Institute of Medical Sciences and Research Foundation, Chinnaoutapalli, India
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Anestesia para craneotomía en el paciente despierto: una actualización. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2015. [DOI: 10.1016/j.rca.2014.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Dexmedetomidine anesthesia enhances spike generation during intra-operative electrocorticography: A promising adjunct for epilepsy surgery. Epilepsy Res 2015; 109:65-71. [DOI: 10.1016/j.eplepsyres.2014.10.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 09/30/2014] [Accepted: 10/18/2014] [Indexed: 11/20/2022]
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Anesthesia for awake craniotomy: An update☆. COLOMBIAN JOURNAL OF ANESTHESIOLOGY 2015. [DOI: 10.1097/01819236-201543001-00005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Ghazanwy M, Chakrabarti R, Tewari A, Sinha A. Awake craniotomy: A qualitative review and future challenges. Saudi J Anaesth 2014; 8:529-39. [PMID: 25422613 PMCID: PMC4236942 DOI: 10.4103/1658-354x.140890] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Neurosurgery in awake patients incorporates newer technologies that require the anesthesiologists to update their skills and evolve their methodologies. They need effective communication skills and knowledge of selecting the right anesthetic drugs to ensure adequate analgesia, akinesia, along with patient satisfaction with the anesthetic conduct throughout the procedure. The challenge of providing adequate anesthetic care to an awake patient for intracranial surgery requires more than routine vigilance about anesthetic management.
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Affiliation(s)
- Mahmood Ghazanwy
- Department of Anesthesiology, Cleveland Clinic Foundation, Ohio, USA
| | - Rajkalyan Chakrabarti
- Department of Neurosurgical Anesthesiology and Spine Surgery, Cleveland Clinic Foundation, Ohio, USA
| | - Anurag Tewari
- Department of Neurosurgical Anesthesiology and Spine Surgery, Cleveland Clinic Foundation, Ohio, USA
| | - Ashish Sinha
- Professor and Vice Chair (Research) Anesthesiology and Perioperative Medicine, Drexel University College of Medicine, Philadelphia, USA
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Naaz S, Ozair E. Dexmedetomidine in current anaesthesia practice- a review. J Clin Diagn Res 2014; 8:GE01-4. [PMID: 25478365 PMCID: PMC4253183 DOI: 10.7860/jcdr/2014/9624.4946] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Accepted: 08/11/2014] [Indexed: 11/24/2022]
Abstract
Dexmedetomidine is an alpha 2 adrenergic receptor agonist, even ten times more selective than clonidine. It is a very versatile drug in anaesthesia practice, finding place in increasing number of clinical scenarios and is no more limited to intensive care unit (ICU) sedation. It is analgesic, has anaesthetic sparing effect, sympatholytic property, useful in other procedural sedation and also has cardiovascular stabilizing property. It reduces delirium and preserves respiratory function which adds benefits to its uses. The aim of this review is to make awareness of its role in present anaesthesia and discuss its limitations at the same time.
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Affiliation(s)
- Shagufta Naaz
- Assistant Professor, Department of Anaesthesia, HIMSR & HAHCH Jamia Hamdard, New Delhi, India.,NAME, ADDRESS, E-MAIL ID OF THE CORRESPONDING AUTHOR: Dr. Shagufta Naaz, Assistant Professor, Department of Anaesthesia, HIMSR & HAHCH, Jamia Hamdard, New Delhi-62, India. Phone : 7838117314, E-mail:
| | - Erum Ozair
- Junior Resident, Department of Anaesthesia, JNMC, AMU, Aligarh, India
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Rao SH, Sudhakar B, Subramanyam PK. Haemodynamic and anaesthetic advantages of dexmedetomidine. SOUTHERN AFRICAN JOURNAL OF ANAESTHESIA AND ANALGESIA 2014. [DOI: 10.1080/22201173.2012.10872873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- SH Rao
- Department of Anaesthesia and Critical Care, Dr Pinnamaneni Sidhartha Institute of Medical Sciences and Research Foundation, NTR University Of Health Sciences, India
| | - B Sudhakar
- Department of Anaesthesia and Critical Care, Dr Pinnamaneni Sidhartha Institute of Medical Sciences and Research Foundation, NTR University Of Health Sciences, India
| | - PK Subramanyam
- Department of Anaesthesia and Critical Care, Dr Pinnamaneni Sidhartha Institute of Medical Sciences and Research Foundation, NTR University Of Health Sciences, India
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Shen SL, Zheng JY, Zhang J, Wang WY, Jin T, Zhu J, Zhang Q. Comparison of dexmedetomidine and propofol for conscious sedation in awake craniotomy: a prospective, double-blind, randomized, and controlled clinical trial. Ann Pharmacother 2013; 47:1391-9. [PMID: 24259599 DOI: 10.1177/1060028013504082] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND It has been reported that dexmedetomidine (DEX) can be used for conscious sedation in awake craniotomy, but few data exist to compare DEX versus propofol (PRO). OBJECTIVE To compare the efficacy and safety of DEX versus PRO for conscious sedation in awake craniotomy. METHODS Thirty patients of American Society of Anesthesiologists grade I-II scheduled for awake craniotomy, were randomized into 2 groups each containing 15 subjects. Group D received DEX and group P received PRO. Two minutes after tracheal intubation (T1), PRO (target plasma concentration) was titrated down to 1 to 4 µg/mL in group P. In group D, PRO was discontinued and DEX was administered 1.0 µg/kg followed by a maintenance dose of 0.2 to 0.7 µg/kg/h. The surgeon preset the anticipated awake point-in-time (T0) preoperatively. Ten minutes before T0 (T3), DEX was titrated down to 0.2 µg/kg/h in group D, PRO was discontinued and normal saline (placebo) 5 mL/h was infused in group P. Arousal time, quality of revival and adverse events during the awake period, degree of satisfaction from surgeons and patients were recorded. RESULTS Arousal time was significantly shorter in group D than in group P (P < .001). The quality of revival during the awake period in group D was similar to that of group P (P = .68). The degree of satisfaction of surgeons was significantly higher in group D than in group P (P < .001), but no difference was found between the 2 groups with respect to patient satisfaction (P = .80). There was no difference between the 2 groups in the incidence of adverse events during the awake period (P > .05). CONCLUSIONS Either DEX or PRO can be effectively and safely used for conscious sedation in awake craniotomy. Comparing the two, DEX produced a shorter arousal time and a higher degree of surgeon satisfaction.
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Affiliation(s)
- She-liang Shen
- Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang, China
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Schlichter RA. Standardization is the better tool to achieving competency for clinical management of awake craniotomy. J Clin Anesth 2013; 25:357-358. [PMID: 23965194 DOI: 10.1016/j.jclinane.2013.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 05/14/2013] [Indexed: 11/18/2022]
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Kayama T. The guidelines for awake craniotomy guidelines committee of the Japan awake surgery conference. Neurol Med Chir (Tokyo) 2013; 52:119-41. [PMID: 22450477 DOI: 10.2176/nmc.52.119] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Event-related functional magnetic resonance imaging of a low dose of dexmedetomidine that impairs long-term memory. Anesthesiology 2013; 117:981-95. [PMID: 22929730 DOI: 10.1097/aln.0b013e31826be467] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Work suggests the amnesia from dexmedetomidine (an α2-adrenergic agonist) is caused by a failure of information to be encoded into long-term memory and that dexmedetomidine might differentially affect memory for emotionally arousing material. We investigated these issues in humans using event-related neuroimaging to reveal alterations in brain activity and subsequent memory effects associated with drug exposure. METHODS Forty-eight healthy volunteers received a computer-controlled infusion of either placebo or low-dose dexmedetomidine (target = 0.15 ng/ml plasma) during neuroimaging while they viewed and rated 80 emotionally arousing (e.g., graphic war wound) and 80 nonarousing neutral (e.g., cup) pictures for emotional arousal content. Long-term picture memory was tested 4 days later without neuroimaging. Imaging data were analyzed for drug effects, emotional processing differences, and memory-related changes with statistical parametric mapping-8. RESULTS Dexmedetomidine impaired overall (mean ± SEM) picture memory (placebo: 0.58 ± 0.03 vs. dexmedetomidine: 0.45 ± 0.03, P = 0.001), but did not differentially modulate memory as a function of item arousal. Arousing pictures were better remembered for both groups. Dexmedetomidine had regionally heterogeneous effects on brain activity, primarily decreasing it in the cortex and increasing it in thalamic and posterior hippocampal regions. Nevertheless, a single subsequent memory effect for item memory common to both groups was identified only in the left hippocampus/amygdala. Much of this effect was found to be larger for the placebo than dexmedetomidine group. CONCLUSION Dexmedetomidine impaired long-term picture memory, but did not disproportionately block memory for emotionally arousing items. The memory impairment on dexmedetomidine corresponds with a weakened hippocampal subsequent memory effect.
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Chui J, Manninen P, Valiante T, Venkatraghavan L. The anesthetic considerations of intraoperative electrocorticography during epilepsy surgery. Anesth Analg 2013; 117:479-86. [PMID: 23780418 DOI: 10.1213/ane.0b013e318297390c] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Epilepsy surgery is a well-established therapeutic intervention for patients with medically refractory seizures. Success of epilepsy surgery depends on the accurate localization and complete removal of the epileptogenic zone. Despite the advances in presurgical localization modalities, electrocorticography is still used in approximately 60% to 70% of the epilepsy centers in North America to guide surgical resection of the epileptogenic lesion and to assess for completeness of surgery. In this review, we discuss the principles and intraoperative use of electrocorticography, the effect of anesthetic drugs on electrocorticography, and the use of pharmacoactivation for intraoperative localization of epileptogenic zone.
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Affiliation(s)
- Jason Chui
- Department of Anesthesia, Toronto Western Hospital, University Health Network, University of Toronto, 399, Bathurst St., Toronto, Ontario, Canada M5T 2S8
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Benatar-Haserfaty J, Tardáguila Sancho P. [Anesthesia for craniotomy in the conscious patient]. REVISTA ESPANOLA DE ANESTESIOLOGIA Y REANIMACION 2013; 60:264-74. [PMID: 23337779 DOI: 10.1016/j.redar.2012.11.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 11/14/2012] [Indexed: 11/27/2022]
Abstract
Craniotomy in the conscious patient (CPC) enables the neurological changes to be assessed during the mapping in epilepsy surgery, the location of the electrodes during deep brain stimulation surgery, and tumor resection in eloquent areas of the brain. CPC is a useful technique for radical surgery in order to minimize the damage to the functional areas of the brain. The anesthesiologist must ensure, adequate patient comfort, analgesia and ensure optimal collaboration. The appropriate selection of potential candidates for CPC should be made jointly with all professionals involved in the case. Knowledge of the different phases of CPC, coordination and communication among specialists, the right management of the pharmacology, and anesthetic techniques specific to CPC, along with the ability of psycho-emotional communication with the patient, determine the success of the procedure to be performed in the culture of patient safety. The aim of this review was to describe the anesthetic management, comprehensive considerations, and intraoperative neurophysiological tests for CPC.
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Affiliation(s)
- J Benatar-Haserfaty
- Servicio de Anestesiología, Hospital Universitario Ramón y Cajal, Madrid, España.
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Kallapur BG, Bhosale R. Use of dexmedetomidine infusion in anaesthesia for awake craniotomy. Indian J Anaesth 2012; 56:413-5. [PMID: 23087472 PMCID: PMC3469928 DOI: 10.4103/0019-5049.100854] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Basavaraj G Kallapur
- Department of Anaesthesia, Karnataka Institute of Medical Sciences, Hubli, Karnataka, India
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Uemura K, Shimazutsu K, McClaine RJ, McClaine DJ, Manson RJ, White WD, Benni PB, Reynolds JD. Maternal and preterm fetal sheep responses to dexmedetomidine. Int J Obstet Anesth 2012; 21:339-47. [PMID: 22938943 DOI: 10.1016/j.ijoa.2012.06.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 06/12/2012] [Accepted: 06/19/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND The α(2) adrenergic receptor agonist dexmedetomidine has some unique pharmacologic properties that could benefit pregnant patients (and their fetuses) when they require sedation, analgesia, and/or anesthesia during pregnancy. The purpose of the present study was to delineate maternal and fetal responses to an intravenous infusion of dexmedetomidine. METHODS This study was conducted on surgically-recovered preterm sheep instrumented for physiologic recording and blood sampling. Maternal and fetal cardiovascular and blood gas parameters and fetal cerebral oxygenation levels were recorded before, during, and after 3h of dexmedetomidine infusion to the ewe at a rate of 1 μg/kg/h. RESULTS Drug infusion produced overt sedation but no apparent respiratory depression as evidenced by stable maternal arterial blood gases; fetal blood gases were also stable. The one blood parameter to change was serum glucose, By the end of the 3-h infusion, glucose increased from 49±10 to 104±33mg/dL in the ewe and from 22±3 to 48±16mg/dL in the fetus; it declined post-drug exposure but remained elevated compared to the starting levels (maternal, 63±12mg/dL, P=0.0497; and fetal, 24±4mg/dL, P=0.012). With respect to cardiovascular status, dexmedetomidine produced a decrease in maternal blood pressure and heart rate with fluctuations in uterine blood flow but had no discernable effect on fetal heart rate or mean arterial pressure. Likewise, maternal drug infusion had no effect on fetal cerebral oxygenation, as measured by in utero near-infrared spectroscopy. CONCLUSIONS Using a clinically-relevant dosing regimen, intravenous infusion of dexmedetomidine produced significant maternal sedation without altering fetal physiologic status. Results from this initial acute assessment support the conduct of further studies to determine if dexmedetomidine has clinical utility for sedation and pain control during pregnancy.
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Affiliation(s)
- K Uemura
- Department of Anesthesiology, Duke University Medical Centre, Durham, NC, USA
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