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Joung KW, Park DH, Jeong CY, Yang HS. Anesthetic care for electroconvulsive therapy. Anesth Pain Med (Seoul) 2022; 17:145-156. [PMID: 35538655 PMCID: PMC9091667 DOI: 10.17085/apm.22145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 03/18/2022] [Indexed: 11/17/2022] Open
Abstract
Counselling and medication are often thought of as the only interventions for psychiatric disorders, but electroconvulsive therapy (ECT) has also been applied in clinical practice for over 80 years. ECT refers to the application of an electric stimulus through the patient’s scalp to treat psychiatric disorders such as treatment-resistant depression, catatonia, and schizophrenia. It is a safe, effective, and evidence-based therapy performed under general anesthesia with muscle relaxation. An appropriate level of anesthesia is essential for safe and successful ECT; however, little is known about this because of the limited interest from anesthesiologists. As the incidence of ECT increases, more anesthesiologists will be required to better understand the physiological changes, complications, and pharmacological actions of anesthetics and adjuvant drugs. Therefore, this review focuses on the fundamental physiological changes, management, and pharmacological actions associated with various drugs, such as anesthetics and neuromuscular blocking agents, as well as the comorbidities, indications, contraindications, and complications of using these agents as part of an ECT procedure through a literature review and our own experiences.
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Affiliation(s)
- Kyoung-Woon Joung
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Dong Ho Park
- Department of Anesthesiology and Pain Medicine, Daejeon Eulji Medical Center, Eulji University School of Medicine, Daejeon, Korea
| | - Chang Young Jeong
- Department of Anesthesiology and Pain Medicine, Daejeon Eulji Medical Center, Eulji University School of Medicine, Daejeon, Korea
| | - Hong Seuk Yang
- Department of Anesthesiology and Pain Medicine, Daejeon Eulji Medical Center, Eulji University School of Medicine, Daejeon, Korea
- Corresponding author Hong Seuk Yang, M.D., Ph.D. Department of Anesthesiology and Pain Medicine, Daejeon Eulji Medical Center, Eulji University School of Medicine, 95 Dunsanseo-ro, Seo-gu, Daejeon 35233, Korea Tel: 82-42-611-3881, Fax: 82-42-259-1111 E-mail:
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Pacheco F, Guiomar R, Brunoni AR, Buhagiar R, Evagorou O, Roca-Lecumberri A, Poleszczyk A, Lambregtse-van den Berg M, Caparros-Gonzalez RA, Fonseca A, Osório A, Soliman M, Ganho-Ávila A. Efficacy of non-invasive brain stimulation in decreasing depression symptoms during the peripartum period: A systematic review. J Psychiatr Res 2021; 140:443-460. [PMID: 34147932 DOI: 10.1016/j.jpsychires.2021.06.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 05/04/2021] [Accepted: 06/04/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Non-invasive brain stimulation (NIBS) techniques have been suggested as alternative treatments to decrease depression symptoms during the perinatal period. These include brain stimulation techniques that do not require surgery and that are nonpharmacological and non-psychotherapeutic. NIBS with evidence of antidepressant effects include repetitive transcranial magnetic stimulation (rTMS), transcranial electric stimulation (TES) and electroconvulsive therapy (ECT). OBJECTIVES This systematic review aims to summarize evidence on NIBS efficacy, safety and acceptability in treating peripartum depression (PPD). METHODS We included randomized, non-randomized and case reports, that used NIBS during pregnancy and the postpartum. The reduction of depressive symptoms and neonatal safety were the primary and co-primary outcomes, respectively. RESULTS rTMS shows promising results for the treatment of PPD, with clinically significant decreases in depressive symptoms between baseline and end of treatment and overall good acceptability. Although the safety profile for rTMS is adequate in the postpartum, caution is warranted during pregnancy. In TES, evidence on efficacy derives mostly from single-arm studies, compromising the encouraging findings. Further investigation is necessary concerning ECT, as clinical practice relies on clinical experience and is only described in low-quality case-reports. LIMITATIONS The reduced number of controlled studies, the lack of complete datasets and the serious/high risk of bias of the reports warrant cautious interpretations. CONCLUSIONS AND IMPLICATIONS Existing evidence is limited across NIBS techniques; comparative studies are lacking, and standard stimulation parameters are yet to be established. Although rTMS benefits from the most robust research, future multicenter randomized clinical trials are needed to determine the position of each NIBS strategy within the pathways of care.
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Affiliation(s)
- Francisca Pacheco
- University of Coimbra, Faculty of Psychology and Educational Sciences, Coimbra, Portugal
| | - Raquel Guiomar
- Center for Research in Neuropsychology and Cognitive-Behavior Interventions, Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal
| | - Andre R Brunoni
- Department of Internal Medicine and Psychiatry, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | | - Olympia Evagorou
- University General Hospital of Alexandroupolis, Department of Psychiatry, Greece
| | - Alba Roca-Lecumberri
- Perinatal Mental Health Unit, Psychiatry and Clinical Psychology Service, Hospital Clinic de Barcelona, Barcelona, Spain
| | | | - Mijke Lambregtse-van den Berg
- Departments of Psychiatry and Child & Adolescent Psychiatry, Erasmus University Medical Center, Rotterdam, the Netherlands
| | | | - Ana Fonseca
- University of Coimbra, Faculty of Psychology and Educational Sciences, Coimbra, Portugal; Center for Research in Neuropsychology and Cognitive-Behavior Interventions, Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal
| | - Ana Osório
- Graduate Program on Developmental Disorders, Center for Biological and Health Sciences, Mackenzie Presbyterian University, São Paulo, Brazil
| | - Mahmoud Soliman
- Department of Radiology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Ana Ganho-Ávila
- Center for Research in Neuropsychology and Cognitive-Behavior Interventions, Faculty of Psychology and Educational Sciences, University of Coimbra, Coimbra, Portugal.
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Mushambi MC, Athanassoglou V, Kinsella SM. Anticipated difficult airway during obstetric general anaesthesia: narrative literature review and management recommendations. Anaesthesia 2020; 75:945-961. [DOI: 10.1111/anae.15007] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/16/2020] [Indexed: 12/16/2022]
Affiliation(s)
- M. C. Mushambi
- Department of Anaesthesia University Hospitals of Leicester LeicesterUK
| | - V. Athanassoglou
- Nuffield Department of Anaesthetics Oxford University Hospitals NHS Foundation Trust Oxford UK
| | - S. M. Kinsella
- Department of Anaesthesia St Michael's Hospital Bristol UK
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Abstract
We tested the hypothesis that gum elastic-bougie-guided insertion of the ProSeal™ Laryngeal Mask Airway is more frequently successful than introducer tool guided insertion after failed digital insertion. One hundred anaesthetized patients (ASA 1-2, aged 18 to 80 years) were randomized for the second insertion attempt using either the gum elastic bougie-guided or introducer tool techniques. The bougie-guided technique involved priming the drain tube with the bougie, placing the bougie in the oesophagus using laryngoscope guidance, digital insertion along the palato-pharyngeal curve, and bougie removal. The introducer tool technique involved attaching the introducer tool, single-handed rotation along the palatopharyngeal curve, and introducer tool removal. Failed insertion was classified as (i) failed passage into the pharynx, (ii) malposition, or (iii) ineffective ventilation. Any blood staining was documented. Insertion was more frequently successful (50/50 vs 15/50, P=0.0002) and faster (35±17s vs 54±45s, mean±SD, P=0.006) with the bougie-guided technique. All failed insertions with the introducer tool technique were successful with the bougie-guided technique. The aetiology of failed insertion was similar for the digital and introducer tool techniques in 94% (33/35) of patients. There was no blood staining on the bougie, laryngoscope or introducer tool at removal, but blood staining was more common on the Proseal laryngeal mask airway with the introducer tool technique (9/50 vs 2/50, P=0.03). We conclude that the gum elastic bougie-guided insertion has a higher success rate and causes less trauma than the insertion tool insertion technique after failed digital insertion of the Proseal Laryngeal Mask Airway.
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Affiliation(s)
- J Brimacombe
- Department of Anaesthesia and Intensive Care, Cairns Base Hospital, Cairns, Queensland
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Gómez-Arnau J, de Arriba-Arnau A, Correas-Lauffer J, Urretavizcaya M. Hyperventilation and electroconvulsive therapy: A literature review. Gen Hosp Psychiatry 2018; 50:54-62. [PMID: 29054017 DOI: 10.1016/j.genhosppsych.2017.09.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 11/15/2022]
Abstract
BACKGROUND Hyperventilation has been proposed as an augmentation strategy in electroconvulsive therapy (ECT) in accordance with its proconvulsant effect. OBJECTIVE This study reviews the existing literature on the application of hyperventilation in ECT, its efficacy, and tolerance. METHODS A systematic search was performed in PubMed and EMBASE databases. Search terms ('electroconvulsive therapy' and 'hyperventilation', 'ventilation', 'hyperoxygenation', 'hyperoxia', 'hypocapnia') were used to retrieve works from 1966 to June 2016. Works that described hyperventilation manoeuvres in ECT settings and their clinical repercussion were included in the review. RESULTS A total of 17 observational and experimental studies were selected. An important heterogeneity in study designs, samples and ECT conditions, was detected. Findings support a positive influence of hyperventilation on seizure duration, which is the main study variable across different works. Effects of hyperventilation on seizure threshold and quality parameters have been less thoroughly studied. Systematic recording of clinical outcomes and adverse effects of hyperventilation is uncommon. CONCLUSIONS The literature suggests that hyperventilation may be an effective and safe technique to enhance ECT, but many aspects remain to be studied. Further investigations, especially controlled clinical trials, are necessary and should result in a specific and reliable hyperventilation protocol for ECT settings.
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Affiliation(s)
| | - Aida de Arriba-Arnau
- Bellvitge University Hospital, Psychiatry Department, Bellvitge Biomedical Research Institute (IDIBELL) Neurosciences Group - Psychiatry and Mental Health, Barcelona, Spain
| | - Javier Correas-Lauffer
- Henares University Hospital, Psychiatry Department, Madrid, Spain; School of Medicine, Universidad Francisco de Vitoria, Madrid, Spain
| | - Mikel Urretavizcaya
- Bellvitge University Hospital, Psychiatry Department, Bellvitge Biomedical Research Institute (IDIBELL) Neurosciences Group - Psychiatry and Mental Health, Barcelona, Spain; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Carlos III Health Institute, Spain; Department of Clinical Sciences, School of Medicine, Universitat de Barcelona, Barcelona, Spain.
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Abstract
BACKGROUND Four systematic reviews have examined the safety of electroconvulsive therapy (ECT) in pregnancy. These have varied widely in methods, findings, and conclusions. METHODS We compared these reviews with regard to search strategy, study selection criteria, total number of studies identified, total number of patients included, findings related to safety and adverse events, and interpretation of results. RESULTS The number of studies (number of cases) included in the reviews ranged from 16 (n = 300) to 67 (n = 169) with only one review stating reasons for exclusion of nonselected studies. We provide comparisons about how the reviews described patient characteristics, illness characteristics, ECT characteristics, confounder characteristics, and outcome characteristics; there was wide variation in these regards. We list adverse outcomes that were identified by some but not other reviews. We provide a detailed breakdown of the adverse maternal and fetal outcomes identified in each review. Finally, we examine how different reviews interpreted their findings; whereas some reviews provided reasons for ruling out ECT as an explanation for an adverse outcome, one review adopted the stance that all adverse outcomes were potentially ECT-related. CONCLUSIONS Our meta-review provides readers with comparative information on the strengths and limitations of the 4 systematic reviews, their findings, and their conclusions. It can assist with clinical decision making on the use of ECT in pregnancy by providing a more complete description of the available literature.
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Buj-Alvarez I, Pifarré J, Marco G, de Sousa-Duso M, Martínez M, López-Gómez J. ¿Puede tener un papel la mascarilla laríngea en la práctica de la terapia electroconvulsiva? Un estudio piloto. Revista de Psiquiatría y Salud Mental 2016; 9:203-209. [DOI: 10.1016/j.rpsm.2015.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 07/31/2015] [Accepted: 09/30/2015] [Indexed: 11/15/2022]
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Leiknes KA, Cooke MJ, Jarosch-von Schweder L, Harboe I, Høie B. Electroconvulsive therapy during pregnancy: a systematic review of case studies. Arch Womens Ment Health 2015; 18:1-39. [PMID: 24271084 PMCID: PMC4305619 DOI: 10.1007/s00737-013-0389-0] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 10/20/2013] [Indexed: 01/11/2023]
Abstract
This study aims to explore practice, use, and risk of electroconvulsive therapy (ECT) in pregnancy. A systematic search was undertaken in the databases Medline, Embase, PsycINFO, SveMed and CINAHL (EBSCO). Only primary data-based studies reporting ECT undertaken during pregnancy were included. Two reviewers independently checked study titles and abstracts according to inclusion criteria and extracted detailed use, practice, and adverse effects data from full text retrieved articles. Studies and extracted data were sorted according to before and after year 1970, due to changes in ECT administration over time. A total of 67 case reports were included and studies from all continents represented. Altogether, 169 pregnant women were identified, treated during pregnancy with a mean number of 9.4 ECTs, at mean age of 29 years. Most women received ECT during the 2nd trimester and many were Para I. Main diagnostic indication in years 1970 to 2013 was Depression/Bipolar disorder (including psychotic depression). Missing data on fetus/child was 12 %. ECT parameter report was often sparse. Both bilateral and unilateral electrode placement was used and thiopental was the main anesthetic agent. Adverse events such as fetal heart rate reduction, uterine contractions, and premature labor (born between 29 and 37 gestation weeks) were reported for nearly one third (29 %). The overall child mortality rate was 7.1 %. Lethal outcomes for the fetus and/or baby had diverse associations. ECT during pregnancy is advised considered only as last resort treatment under very stringent diagnostic and clinical indications. Updated international guidelines are urgently needed.
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Affiliation(s)
- Kari Ann Leiknes
- Norwegian Knowledge Centre for the Health Services, Box 7004 St. Olavsplass, Pilestredet Park 7, Oslo, 0130, Norway,
| | - Mary Jennifer Cooke
- Department for Psychosis, Psychiatric Clinic, Haukeland University Hospital, Bergen, 5021 Norway
| | - Lindy Jarosch-von Schweder
- Division of Psychiatry, Tiller DPS and Faculty of Medicine, Institute of Neuroscience, St. Olav’s University Hospital and Norwegian University of Science and Technology (NTNU), P O Box 3008, Lade, 7441 Trondheim, Norway
| | - Ingrid Harboe
- Norwegian Knowledge Centre for the Health Services, Box 7004 St. Olavsplass, Pilestredet Park 7, Oslo, 0130 Norway
| | - Bjørg Høie
- Norwegian Knowledge Centre for the Health Services, Box 7004 St. Olavsplass, Pilestredet Park 7, Oslo, 0130 Norway
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Maclean J, Tripathy D, Parthasarathy S, Ravishankar M. Comparative evaluation of gum-elastic bougie and introducer tool as aids in positioning of ProSeal laryngeal mask airway in patients with simulated restricted neck mobility. Indian J Anaesth 2013; 57:248-52. [PMID: 23983282 PMCID: PMC3748678 DOI: 10.4103/0019-5049.115604] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: The ProSeal laryngeal mask airway (PLMA) is a unique laryngeal mask with a modified cuff to improve seal and a channel to facilitate gastric tube placement. This is a better device in difficult airway situations compared to classic laryngeal mask airway. This prompted us to study the ease of insertion and positioning of PLMA in patients with simulated restricted neck mobility while using gum elastic bougie (GEB) group or introducer tool (group IT) to aid insertion. Methods: Sixty ASA I or II patients, aged between 18 years and 60 years, undergoing minor non-head and neck surgeries in the supine position were studied. A rigid neck collar was used to simulate restricted neck mobility in all patients. After anaesthetising the patients with a standard protocol, the PLMA was inserted using either of the technique using the tongue depressor to open the mouth. The ease of insertion, positioning, haemodynamic responses to insertion and other complications related to the procedure were noted. Results: Regarding demographic variables, both groups were similar. The mean time taken for insertion of PLMA in group GEB was 67.80 s as compared to 46.79 s in group IT (P<0.05). Patients of group GEB had better positioning assessed by an intubating fiberscope with less end tidal carbon-di-oxide (ETCO2) values. Systolic and diastolic blood pressures were similar. The incidence of sore throat, dysphagia, and dysphonia were higher in IT group in the 12 h, but similar in 24 h. Conclusion: Guided insertion technique with GEB took a longer time, but had a better positioning and lower ETCO2 values when compared to IT technique.
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Affiliation(s)
- Jennyl Maclean
- Department of Anaesthesiology, Mahatma Gandhi Medical College and Research Institute, Puducherry, India
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Chutatape A, Sng BL. The role of the supraglottic airway in general anaesthesia for Caesarean section. Trends in Anaesthesia and Critical Care 2013; 3:162-5. [DOI: 10.1016/j.tacc.2013.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Bozkurt A, Karlidere T, Isintas M, Ozmenler NK, Ozsahin A, Yanarates O. Acute and maintenance electroconvulsive therapy for treatment of psychotic depression in a pregnant patient. J ECT 2007; 23:185-7. [PMID: 17804997 DOI: 10.1097/yct.0b013e31806db4dd] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Depression may relapse during pregnancy in women with a history of depression. Treatments which may be effective for mothers may be harmful to the fetus. Electroconvulsive therapy (ECT) has been widely used in patients with different medical illnesses. It is safe, and its efficacy is well established. In our example, the patient was a 34-year-old white woman who was at 13 weeks' gestation at the time of admission to our hospital. Over a 1-month period, the patient underwent a total of 13 ECTs (3 times a week) and 3 more ECTs monthly until the birth of her child. After 10th ECT, the Hamilton Depression Rating Scale score was reduced from 33 before ECT to 7. After 3 more weekly ECTs, the patient was discharged from the hospital with a Hamilton Depression Rating Scale score of 3. The patient was instructed to continue maintenance treatment with ECT sessions monthly. Except for pelvic pain and transient fetal arrhythmias, no complications were reported. Thus, acute and maintenance ECT may be the choice of treatment in severely depressed or psychotic pregnant patients.
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Affiliation(s)
- Ali Bozkurt
- Department of Psychiatry, Gülhane School of Medicine, Ankara, Turkey.
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Cook TM, Silsby J, Simpson TP. Airway rescue in acute upper airway obstruction using a ProSeal?Laryngeal mask airway and an Aintree Catheter?: a review of the ProSeal?Laryngeal mask airway in the management of the difficult airway. Anaesthesia 2005; 60:1129-36. [PMID: 16229699 DOI: 10.1111/j.1365-2044.2005.04370.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
We report the successful use of a ProSeal Laryngeal mask airway (PLMA) to rescue the airway when emergency tracheal intubation and ventilation of the lungs were impossible after haemorrhage into the neck following carotid endarterectomy, despite evacuation of the clot. The airway was re-established after placement of a PLMA. Fibreoptic examination of the airway revealed severe supraglottic swelling compromising airway patency. An Aintree catheter was placed in the trachea under fibreoptic guidance and a tracheal tube railroaded over this. The use of the PLMA in seven cases of difficult airway management and 11 cases of airway rescue is reviewed. Use of the PLMA was associated with high levels of success, often rescuing the airway when other techniques had failed. No complications of use of the PLMA were reported in these cases. The PLMA appears to be a useful device to assist in management of the difficult airway and for airway rescue. Potential advantages over the classic laryngeal mask airway include improved airway seal and reduced risk of aspiration. The gum elastic bougie-guided insertion technique is recommended when the PLMA is used for airway rescue.
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Affiliation(s)
- T M Cook
- Department of Anaesthesia, Royal United Hospital, Combe Park, Bath, BA1 3NG, England.
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Abstract
OBJECTIVES To provide a current review of the literature regarding airway problems in pregnancy and management. BACKGROUND Obstetrical anesthesia is considered to be a high-risk practice that exposes the anesthesiologist to increased medicolegal liability. Anesthetic management of a parturient is a challenge because it involves simultaneous care of both mother and baby. Failure to appropriately manage a difficult or failed intubation increases the risk of hypoxemic cardiopulmonary arrest and/or pulmonary aspiration, resulting in a high probability of maternal morbidity and mortality. DATA Anesthesia is the seventh leading cause of maternal mortality in the United States. Anatomic and physiologic changes during pregnancy place the parturient at increased risk for airway management problems. It is essential to perform a thorough preanesthetic evaluation and identify the factors predictive of difficult intubation. Airway devices such as the laryngeal mask airway, ProSeal, intubating laryngeal mask airway, Combitube, and laryngeal tube are described and have been used during failed intubation in pregnant patients. CONCLUSION Teamwork between an anesthesiologist and an obstetrician is absolutely essential for the safety of both the mother and baby. Most of us tend to agree that airway emergencies have a way of occurring at the worst possible times. It is essential that all anesthesia care practitioners must have a preconceived and well thought-out algorithm and emergency airway equipment to deal with airway emergencies during difficult or failed intubation of a parturient.
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Affiliation(s)
- Uma Munnur
- Department of Anesthesiology, Baylor College of Medicine, Houston, TX 77030, USA.
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Abstract
PURPOSE To analyze and summarize the published literature relating to the ProSeal LMA (PLMA): a modification of the "classic LMA" (cLMA) with an esophageal drain tube (DT), designed to improve controlled ventilation, airway protection and diagnosis of misplacement. SOURCE Articles identified through Medline and EMBASE searches using keywords "Proseal", "ProSeal" and "PLMA". Hand searches of these articles and major anesthetic journals from January 1998 to March 2005. PRINCIPAL FINDINGS Searches identified 59 randomized controlled trials or clinical studies and 79 other publications. Compared to the cLMA, PLMA insertion takes a few seconds longer. First attempt insertion success for the PLMA is lower, but overall success is equivalent. Airway seal is improved by 50%. The DT enables early diagnosis of mask misplacement, allows gastric drainage, reduces gastric inflation and may vent regurgitated stomach contents. Evidence suggests, but does not prove, that the correctly placed PLMA reduces aspiration risk compared with the cLMA. PLMA use is associated with less coughing and less hemodynamic disturbance than use of a tracheal tube (TT). Comparative trials of the PLMA with other supraglottic airways favour the PLMA. Clinicians have extended the use of the PLMA inside and outside the operating theatre including use for difficult airway management and airway rescue. CONCLUSIONS The PLMA has similar insertion characteristics and complications to other laryngeal masks. The DT enables rapid diagnosis of misplacement. The PLMA offers significant benefits over both the cLMA and TT in some clinical circumstances. These and clinical experience with the PLMA are discussed.
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Affiliation(s)
- Tim M Cook
- Department of Anaesthesia, Royal United Hospital, Combe Park, Bath BA1 3NG, UK.
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Abstract
Since the 1970s, improvements in airway management have been significant. New imaging modalities such as CT and MRI can display airway structures with unparalleled detail, which improves preoperative planning and the treatment of patients with pathologic processes involving the respiratory tract or with difficult-to-manage airways. Because of the introduction of flexible fiberscopes, pulmonologists and thoracic surgeons can diagnose diseases of the respiratory tract effectively and treat patients with these diseases safely. The use of flexible fiberscopes has expanded rapidly into other medical specialties, including anesthesia and critical care. Modem anesthesiologists now use flexible fiberscopes daily to intubate patients safely, especially when traditional intubating techniques fail. The cost of fiberscopes has decreased dramatically, and their optical systems have improved. Several centers of excellence have been developed where clinicians can learn basic and advanced techniques of fiberoptic intubation. The LMA has shown that the supraglottic airway approach is not only feasible, but also in many situations superior to tracheal intubation. Although the LMA initially was recommended as an alternative to the facemask, its use has expanded, benefiting many children and adults undergoing a variety of diagnostic and therapeutic procedures. Use of an LMA in combination with a flexible fiberscope has opened up new possibilities for treating patients safely and effectively while providing optimal comfort during a procedure and has been particularly beneficial in thoracic surgery. The most recent iteration of the ASA Difficult Airway Algorithm has revised further a systematic approach to the clinical care of patients with different types of difficult-to-manage airways.
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Affiliation(s)
- David Ferson
- Department of Anesthesiology and Pain Medicine, The University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 42, Houston, TX 77030-4590, USA.
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Abstract
Obstetric anesthesia is considered to be a difficult, high-risk practice that exposes the anesthesiologist to increased medicolegal liability. Anesthetic management of parturient patients is a challenge, as it involves simultaneous care of two lives. The anesthesia practitioner has a duty to provide safe anesthetic care, including effective airway management when providing regional or general anesthesia. The potential need to manipulate the airway is perhaps the leading cause of concern among obstetric anesthesiologists.
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Affiliation(s)
- Uma Munnur
- Department of Anesthesiology, Baylor College of Medicine, 6550 Fannin, Smith Tower, Suite 1003, Houston, TX 77030, USA.
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