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Nimmo AF, Absalom AR, Bagshaw O, Biswas A, Cook TM, Costello A, Grimes S, Mulvey D, Shinde S, Whitehouse T, Wiles MD. Guidelines for the safe practice of total intravenous anaesthesia (TIVA). Anaesthesia 2018; 74:211-224. [DOI: 10.1111/anae.14428] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/02/2018] [Indexed: 12/16/2022]
Affiliation(s)
- A. F. Nimmo
- Department of Anaesthesia; Royal Infirmary of Edinburgh; Edinburgh UK; Society for Intravenous Anaesthesia (Co-Chair of the Working party)
| | - A. R. Absalom
- Department of Anesthesiology; University Medical Center Groningen; University of Groningen; Groningen The Netherlands: Society for Intravenous Anaesthesia
| | - O. Bagshaw
- Department of Anaesthesia; Birmingham Women's and Children's NHS Foundation Trust; Birmingham UK; Association of Paediatric Anaesthetists of Great Britain and Ireland
| | - A. Biswas
- Adult/Obstetric Anesthesiology; Sidra Medicine; Qatar Foundation; Doha Qatar; Society for Intravenous Anaesthesia
| | - T. M. Cook
- Department of Anaesthesia and Intensive Care Medicine; Royal United Hospital NHS Foundation Trust; Bath UK; Royal College of Anaesthetists
| | - A. Costello
- Department of Anaesthesia; Milton Keynes University Hospital NHS Foundation Trust; UK; Association of
Anaesthetists Trainee Committee
| | - S. Grimes
- Department of Anaesthesia; Mid Western Regional Hospital; Limerick Ireland; College of
Anaesthesiologists of Ireland
| | - D. Mulvey
- Department of Anaesthesia; Derby Teaching Hospitals NHS Foundation Trust; Derby UK; Society for Intravenous Anaesthesia
| | - S. Shinde
- Department of Anaesthesia; North Bristol NHS Trust; Bristol UK; Association of Anaesthetists (Co-Chair of the Working Party)
| | - T. Whitehouse
- Department of Anaesthesia and Critical Care; University Hospitals Birmingham NHS Foundation Trust; Birmingham UK; Intensive Care Society
| | - M. D. Wiles
- Department of Anaesthesia; Sheffield Teaching Hospitals NHS Foundation Trust; Sheffield UK; Editor, Anaesthesia
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Pandit JJ. An observational study of the 'isolated forearm technique' in unparalysed, spontaneously breathing patients. Anaesthesia 2015; 70:1369-74. [PMID: 26443293 DOI: 10.1111/anae.13242] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2015] [Indexed: 11/27/2022]
Abstract
The isolated forearm technique enables a patient, otherwise paralysed by neuromuscular blockade, to communicate by movement if wakeful during surgery. The positive response rate to verbal command is high (~32%). The 5th National Audit Project recommended that this monitoring technique should become more widely taught and considered, so this study was designed to assess its utility as a standard of care in unparalysed patients. A positive response rate as high as in the paralysed would justify local adoption. Therefore, 100 consecutive patients undergoing urology surgery were given verbal commands to move at two-minute intervals from induction of anaesthesia (fentanyl and propofol) to full emergence and extubation of the supraglottic airway. Anaesthesia was maintained with isoflurane in oxygen/nitrous oxide. Although 24 patients moved during surgery (and therefore needed additional anaesthetic), none moved to verbal command. Even at extubation, when patients moved to expel the airway, there was no response to command until after wakening. These results suggest that in contrast to its use in paralysed patients, the isolated forearm technique does not yield useful information about the patient's state of wakefulness in the unparalysed. Another interpretation is that unparalysed patients are less prone to wakefulness than the paralysed.
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Affiliation(s)
- J J Pandit
- Nuffield Department of Anaesthetics, Oxford University Hospitals NHS Trust, Oxford, UK
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Absalom AR, Green D. NAP5: the tip of the iceberg, or all we need to know? Br J Anaesth 2014; 113:527-30. [PMID: 25236893 DOI: 10.1093/bja/aeu349] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A R Absalom
- Department of Anesthesiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, PO Box 30 001, 9700 RB Groningen, The Netherlands
| | - D Green
- Department of Anaesthesia, Kings College Hospital London, UK
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Pandit JJ, Andrade J, Bogod DG, Hitchman JM, Jonker WR, Lucas N, Mackay JH, Nimmo AF, O'Connor K, O'Sullivan EP, Paul RG, Palmer JHM, Plaat F, Radcliffe JJ, Sury MRJ, Torevell HE, Wang M, Hainsworth J, Cook TM. The 5th National Audit Project (NAP5) on accidental awareness during general anaesthesia: summary of main findings and risk factors. Anaesthesia 2014; 69:1089-101. [PMID: 25204236 DOI: 10.1111/anae.12826] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2014] [Indexed: 12/17/2022]
Abstract
We present the main findings of the 5th National Audit Project on accidental awareness during general anaesthesia. Incidences were estimated using reports of accidental awareness as the numerator, and a parallel national anaesthetic activity survey to provide denominator data. The incidence of certain/probable and possible accidental awareness cases was ~1:19 600 anaesthetics (95% CI 1:16 700-23 450). However, there was considerable variation across subtypes of techniques or subspecialties. The incidence with neuromuscular blockade was ~1:8200 (1:7030-9700), and without it was ~1:135 900 (1:78 600-299 000). The cases of accidental awareness during general anaesthesia reported to 5th National Audit Project were overwhelmingly cases of unintended awareness during neuromuscular blockade. The incidence of accidental awareness during caesarean section was ~1:670 (1:380-1300). Two thirds (82, 66%) of cases of accidental awareness experiences arose in the dynamic phases of anaesthesia, namely induction of and emergence from anaesthesia. During induction of anaesthesia, contributory factors included: use of thiopental; rapid sequence induction; obesity; difficult airway management; neuromuscular blockade; and interruptions of anaesthetic delivery during movement from anaesthetic room to theatre. During emergence from anaesthesia, residual paralysis was perceived by patients as accidental awareness, and commonly related to a failure to ensure full return of motor capacity. One third (43, 33%) of accidental awareness events arose during the maintenance phase of anaesthesia, most due to problems at induction or towards the end of anaesthesia. Factors increasing the risk of accidental awareness included: female sex; age (younger adults, but not children); obesity; anaesthetist seniority (junior trainees); previous awareness; out-of-hours operating; emergencies; type of surgery (obstetric, cardiac, thoracic); and use of neuromuscular blockade. The following factors were not risk factors for accidental awareness: ASA physical status; race; and use or omission of nitrous oxide. We recommend that an anaesthetic checklist, to be an integral part of the World Health Organization Safer Surgery checklist, is introduced as an aid to preventing accidental awareness. This paper is a shortened version describing the main findings from 5th National Audit Project - the full report can be found at http://www.nationalauditprojects.org.uk/NAP5_home#pt.
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Affiliation(s)
- J J Pandit
- Nuffield Department of Anaesthesia, Oxford University Hospitals NHS Trust, Oxford, UK
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Pandit JJ, Andrade J, Bogod DG, Hitchman JM, Jonker WR, Lucas N, Mackay JH, Nimmo AF, O'Connor K, O'Sullivan EP, Paul RG, Palmer JHMG, Plaat F, Radcliffe JJ, Sury MRJ, Torevell HE, Wang M, Hainsworth J, Cook TM. 5th National Audit Project (NAP5) on accidental awareness during general anaesthesia: summary of main findings and risk factors. Br J Anaesth 2014; 113:549-59. [PMID: 25204697 DOI: 10.1093/bja/aeu313] [Citation(s) in RCA: 267] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
We present the main findings of the 5th National Audit Project (NAP5) on accidental awareness during general anaesthesia (AAGA). Incidences were estimated using reports of accidental awareness as the numerator, and a parallel national anaesthetic activity survey to provide denominator data. The incidence of certain/probable and possible accidental awareness cases was ~1:19,600 anaesthetics (95% confidence interval 1:16,700-23,450). However, there was considerable variation across subtypes of techniques or subspecialities. The incidence with neuromuscular block (NMB) was ~1:8200 (1:7030-9700), and without, it was ~1:135,900 (1:78,600-299,000). The cases of AAGA reported to NAP5 were overwhelmingly cases of unintended awareness during NMB. The incidence of accidental awareness during Caesarean section was ~1:670 (1:380-1300). Two-thirds (82, 66%) of cases of accidental awareness experiences arose in the dynamic phases of anaesthesia, namely induction of and emergence from anaesthesia. During induction of anaesthesia, contributory factors included: use of thiopental, rapid sequence induction, obesity, difficult airway management, NMB, and interruptions of anaesthetic delivery during movement from anaesthetic room to theatre. During emergence from anaesthesia, residual paralysis was perceived by patients as accidental awareness, and commonly related to a failure to ensure full return of motor capacity. One-third (43, 33%) of accidental awareness events arose during the maintenance phase of anaesthesia, mostly due to problems at induction or towards the end of anaesthesia. Factors increasing the risk of accidental awareness included: female sex, age (younger adults, but not children), obesity, anaesthetist seniority (junior trainees), previous awareness, out-of-hours operating, emergencies, type of surgery (obstetric, cardiac, thoracic), and use of NMB. The following factors were not risk factors for accidental awareness: ASA physical status, race, and use or omission of nitrous oxide. We recommend that an anaesthetic checklist, to be an integral part of the World Health Organization Safer Surgery checklist, is introduced as an aid to preventing accidental awareness. This paper is a shortened version describing the main findings from NAP5--the full report can be found at http://www.nationalauditprojects.org.uk/NAP5_home.
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Affiliation(s)
- J J Pandit
- Nuffield Department of Anaesthetics, Oxford University Hospitals NHS Trust, Oxford, UK
| | - J Andrade
- Department of Psychology, School of Psychology and Cognition Institute, Plymouth University, Plymouth, UK
| | - D G Bogod
- Department of Anaesthesia, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - J M Hitchman
- Member Royal College of Anaesthetists' Lay Committee, London, UK
| | - W R Jonker
- Department of Anaesthesia, Intensive Care and Pain Medicine, Sligo Regional Hospital, Sligo, Ireland
| | - N Lucas
- Department of Anaesthesia, Northwick Park Hospital, Harrow, Middlesex, UK
| | - J H Mackay
- Department of Anaesthesia, Papworth Hospital, Cambridge, UK
| | - A F Nimmo
- Department of Anaesthesia, Royal Infirmary of Edinburgh, Edinburgh, UK
| | - K O'Connor
- Bristol School of Anaesthesia, Bristol, UK
| | - E P O'Sullivan
- Department of Anaesthesia, St James Hospital, James Street, Dublin, Ireland
| | - R G Paul
- Adult Intensive Care Unit, Royal Brompton Hospital, London, UK
| | - J H M G Palmer
- Department of Anaesthesia, Salford Royal Hospital, Salford, UK
| | - F Plaat
- Department of Anaesthesia, Imperial College NHS Trust, London, UK
| | - J J Radcliffe
- Department of Neuroanaesthesia, National Hospital for Neurology and Neurosurgery, Queen Square, UK
| | - M R J Sury
- Department of Anaesthesia, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - H E Torevell
- Bradford Teaching Hospitals NHS Foundation Trust, Bradford, UK
| | - M Wang
- University of Leicester, Leicester, UK
| | - J Hainsworth
- Leicestershire Partnership NHS Trust, Leicester, UK
| | - T M Cook
- Department of Anaesthesia and Intensive Care Medicine, Royal United Hospital, Bath, UK
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