1
|
Shi Y, Jin Y, Song J, Shi J, Liu X, Zhao G, Su Z. A quasi-experimental study of fresh oxygen flow on patients' oxygen reserve during mask-assisted ventilation under general anesthesia induction. Front Med (Lausanne) 2023; 10:1261177. [PMID: 37780572 PMCID: PMC10534030 DOI: 10.3389/fmed.2023.1261177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 08/30/2023] [Indexed: 10/03/2023] Open
Abstract
Background To compare the effect of different amounts of fresh oxygen flow on oxygen reserve in patients undergoing general anesthesia. Methods Seventy-two patients were enrolled in this quasi-experimental study. Patients were randomly divided into experimental groups with a fresh oxygen flow of 1 L/min, 2 L/min, 4 L/min, and 8 L/min (denoted as G1, G2, G3, and G4, respectively) for 2 min of mask-assisted ventilation. Safe apnea time (SAT) was the primary endpoint; SAT was defined as the time from the cessation of ventilation to the time the patient's pulse oxygen saturation (SpO2) decreased to 90%. Ventilation indicators such as end-tidal oxygen concentration (EtO2), end-tidal carbon dioxide partial pressure (EtCO2), SpO2, and carbon dioxide (CO2) elimination amount, during mask-assisted ventilation, were the secondary endpoints. Results The SAT of G1, G2, G3, and G4 were 305.1 ± 97.0 s, 315 ± 112.5 s, 381.3 ± 118.6 s, and 359 ± 104.4 s, respectively (p > 0.05). The EtO2 after 2 min of mask-assisted ventilation in groups G1, G2, G3, and G4 were 69.7 ± 8.8%, 75.2 ± 5.0%, 82.5 ± 3.3%, and 86.8 ± 1.5%, respectively (p < 0.05). Also, there was a moderate positive correlation between the fresh oxygen flow and EtO2 (correlation coefficient r = 0.52, 95% CI 0.31-0.67, p < 0.0001). The CO2 elimination in the G1 and G2 groups was greater than that in the G4 group (p < 0.05). There was no significant difference in other indicators among the groups (all p > 0.05). Conclusion The amount of fresh oxygen flow during mask-assisted ventilation was positively correlated with EtO2. Also, even though there was no significant difference, the patients' oxygen reserves increased with the increase in fresh oxygen flow.
Collapse
Affiliation(s)
- Yubo Shi
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Ying Jin
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Jianli Song
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China
- Department of Anesthesiology, Zigong Fourth People’s Hospital, Zigong, China
| | - Jingfeng Shi
- Department of Anesthesia, Jiutai District Hospital of Traditional Chinese Medicine, Changchun, China
| | - Xiaoying Liu
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Guoqing Zhao
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Zhenbo Su
- Department of Anesthesiology, China-Japan Union Hospital of Jilin University, Changchun, China
| |
Collapse
|
2
|
Abstract
Initiation of preoxygenation prior to anesthetic induction and tracheal intubation is a commonly recognized technique intended to boost oxygen reservoirs in the body and thus slow the progression of desaturation of arterial hemoglobin at times of apnea. Even though challenges associated with ventilation and intubation are inconsistent, it is preferable for all patients to necessitate preoxygenation. The effectiveness of preoxygenation is measured by its performance and efficiency. Determinant factors of efficacy indices include rises in the alveolar O2 fraction (FAO2), reductions in the alveolar nitrogen fraction (FAN2), and improvements in the arterial O2 stress (PAO2). The effectiveness or efficiency of preoxygenation during apnea is evaluated from the declining trend in level of oxyhemoglobin desaturation (SAO2). The maximal risk associated with preoxygenation generally comprises delayed diagnosis of oesophageal intubation, absorption atelectasis, generation of reactive oxygen species, and incidences of adverse hemodynamic results. Since the time of preoxygenation is minimal, there are limited hemodynamic effects and the aggregation of reactive oxygen species to counteract its effectiveness. In general, three methods of preoxygenation techniques are followed for the routine procedures, namely, deep breathing, rapid breathing at fraction of inspired oxygen (FiO2) of 1 for two to five minutes, and the four vital capacities method. Health professionals, especially anesthesiologists specialized in Ear Nose and Throat (ENT) and traumatology, must be empowered by alternative methods like trans-tracheal ventilation to resolve life-threatening medical emergencies. Equipment accessibility and needful training are two essential components that are recommended for significant preparedness. The present article reviews the advantages conferred by the preoxygenation techniques with special attention to the high-risk population. It also details the inadequacies and the risks associated with the preoxygenation technique.
Collapse
|
3
|
Murphy NE, Coursin DB, Pryde P. Efficacy vs efficiency using high flow nasal oxygen in peri-intubation oxygenation of gravid women. Int J Obstet Anesth 2020; 45:17-20. [PMID: 33199258 DOI: 10.1016/j.ijoa.2020.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/13/2020] [Accepted: 10/10/2020] [Indexed: 12/20/2022]
Affiliation(s)
- N E Murphy
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health Madison, WI USA.
| | - D B Coursin
- Departments of Anesthesiology & Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - P Pryde
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health Madison, WI USA
| |
Collapse
|
4
|
„Rapid sequence induction and intubation“ beim aspirationsgefährdeten Patienten. Anaesthesist 2018; 67:568-583. [DOI: 10.1007/s00101-018-0460-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 04/23/2018] [Accepted: 05/03/2018] [Indexed: 12/19/2022]
|
5
|
Is preoxygenation still important? New concepts. TRENDS IN ANAESTHESIA AND CRITICAL CARE 2017. [DOI: 10.1016/j.tacc.2017.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
6
|
|
7
|
Ramkumar V, Dinesh E, Shetty SR, Shah A, Kundra P, Das S, Myatra SN, Ahmed SM, Divatia JV, Patwa A, Garg R, Raveendra US, Doctor JR, Pawar DK, Ramesh S. All India Difficult Airway Association 2016 guidelines for the management of unanticipated difficult tracheal intubation in obstetrics. Indian J Anaesth 2016; 60:899-905. [PMID: 28003691 PMCID: PMC5168892 DOI: 10.4103/0019-5049.195482] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The various physiological changes in pregnancy make the parturient vulnerable for early and rapid desaturation. Severe hypoxaemia during intubation can potentially compromise two lives (mother and foetus). Thus tracheal intubation in the pregnant patient poses unique challenges, and necessitates meticulous planning, ready availability of equipment and expertise to ensure maternal and foetal safety. The All India Difficult Airway Association (AIDAA) proposes a stepwise plan for the safe management of the airway in obstetric patients. These guidelines have been developed based on available evidence; wherever robust evidence was lacking, recommendations were arrived at by consensus opinion of airway experts, incorporating the responses to a questionnaire sent to members of the AIDAA and the Indian Society of Anaesthesiologists (ISA). Modified rapid sequence induction using gentle intermittent positive pressure ventilation with pressure limited to ≤20 cm H2O is acceptable. Partial or complete release of cricoid pressure is recommended when face mask ventilation, placement of supraglottic airway device (SAD) or tracheal intubation prove difficult. One should call for early expert assistance. Maternal SpO2 should be maintained ≥95%. Apnoeic oxygenation with nasal insufflation of 15 L/min oxygen during apnoea should be performed in all patients. If tracheal intubation fails, a second- generation SAD should be inserted. The decision to continue anaesthesia and surgery via the SAD, or perform fibreoptic-guided intubation via the SAD or wake up the patient depends on the urgency of surgery, foeto-maternal status and availability of resources and expertise. Emergency cricothyroidotomy must be performed if complete ventilation failure occurs.
Collapse
Affiliation(s)
| | - Ekambaram Dinesh
- Department of Anaesthesiology, Kasturba Medical College, Manipal, Karnataka, India
- Address for correspondence: Dr. Ekambaram Dinesh, Department of Anaesthesiology, Kasturba Medical College, Manipal 576 104, Karnataka, India. E-mail:
| | - Sumalatha Radhakrishna Shetty
- Department of Anaesthesiology and Critical Care, K S Hegde Medical Academy, Nitte University, Mangalore, Karnataka, India
| | - Amit Shah
- Kailash Cancer Hospital and Research Centre, Muni Seva Ashram, Vadodara, Gujarat, India
- Department of Anaesthesiology and Critical Care, Vadodara Institute of Neurological Sciences, Vadodara, Gujarat, India
| | - Pankaj Kundra
- Department of Anaesthesiology and Critical Care, JIPMER, Puducherry, India
| | - Sabyasachi Das
- Department of Anaesthesiology, North Bengal Medical College, Darjeeling, West Bengal, India
| | - Sheila Nainan Myatra
- Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Syed Moied Ahmed
- Department of Anaesthesiology and Critical Care, J N Medical College and Hospital, AMU, Aligarh, Uttar Pradesh, India
| | - Jigeeshu Vasishtha Divatia
- Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Apeksh Patwa
- Kailash Cancer Hospital and Research Centre, Muni Seva Ashram, Vadodara, Gujarat, India
- Department of Anaesthesiology and Critical Care, Vadodara Institute of Neurological Sciences, Vadodara, Gujarat, India
| | - Rakesh Garg
- Department of Onco-Anaesthesiology and Palliative Medicine, Dr BRAIRCH, All India Institute of Medical Sciences, New Delhi, India
| | - Ubaradka S Raveendra
- Department of Anaesthesiology and Critical Care, K S Hegde Medical Academy, Nitte University, Mangalore, Karnataka, India
| | - Jeson Rajan Doctor
- Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Dilip K Pawar
- Former Professor, Department of Anaesthesiology, All India Institute of Medical Sciences, New Delhi, India
| | - Singaravelu Ramesh
- Department of Paediatric Anaesthesia, Kanchi Kamakoti CHILDS Trust Hospital, Chennai, Tamil Nadu, India
| |
Collapse
|
8
|
Pillai A, Daga V, Lewis J, Mahmoud M, Mushambi M, Bogod D. High-flow humidified nasal oxygenation vs. standard face mask oxygenation. Anaesthesia 2016; 71:1280-1283. [DOI: 10.1111/anae.13607] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2016] [Indexed: 11/27/2022]
Affiliation(s)
- A. Pillai
- Anaesthetic Department; Royal Perth Hospital; Perth Western Australia Australia
| | - V. Daga
- Anaesthetic Department; University Hospitals of Coventry and Warwickshire NHS Trust; Coventry UK
| | - J. Lewis
- Anaesthetic Department; Nottingham University Hospitals NHS Trust; Nottingham UK
| | - M. Mahmoud
- Anaesthetic Department; Nottingham University Hospitals NHS Trust; Nottingham UK
| | - M. Mushambi
- Anaesthetic Department; University Hospitals of Leicester NHS Trust; Leicester UK
| | - D. Bogod
- Anaesthetic Department; Nottingham University Hospitals NHS Trust; Nottingham UK
| |
Collapse
|
9
|
|
10
|
Mushambi MC, Kinsella SM, Popat M, Swales H, Ramaswamy KK, Winton AL, Quinn AC. Obstetric Anaesthetists' Association and Difficult Airway Society guidelines for the management of difficult and failed tracheal intubation in obstetrics. Anaesthesia 2016; 70:1286-306. [PMID: 26449292 PMCID: PMC4606761 DOI: 10.1111/anae.13260] [Citation(s) in RCA: 298] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2015] [Indexed: 12/16/2022]
Abstract
The Obstetric Anaesthetists' Association and Difficult Airway Society have developed the first national obstetric guidelines for the safe management of difficult and failed tracheal intubation during general anaesthesia. They comprise four algorithms and two tables. A master algorithm provides an overview. Algorithm 1 gives a framework on how to optimise a safe general anaesthetic technique in the obstetric patient, and emphasises: planning and multidisciplinary communication; how to prevent the rapid oxygen desaturation seen in pregnant women by advocating nasal oxygenation and mask ventilation immediately after induction; limiting intubation attempts to two; and consideration of early release of cricoid pressure if difficulties are encountered. Algorithm 2 summarises the management after declaring failed tracheal intubation with clear decision points, and encourages early insertion of a (preferably second-generation) supraglottic airway device if appropriate. Algorithm 3 covers the management of the 'can't intubate, can't oxygenate' situation and emergency front-of-neck airway access, including the necessity for timely perimortem caesarean section if maternal oxygenation cannot be achieved. Table 1 gives a structure for assessing the individual factors relevant in the decision to awaken or proceed should intubation fail, which include: urgency related to maternal or fetal factors; seniority of the anaesthetist; obesity of the patient; surgical complexity; aspiration risk; potential difficulty with provision of alternative anaesthesia; and post-induction airway device and airway patency. This decision should be considered by the team in advance of performing a general anaesthetic to make a provisional plan should failed intubation occur. The table is also intended to be used as a teaching tool to facilitate discussion and learning regarding the complex nature of decision-making when faced with a failed intubation. Table 2 gives practical considerations of how to awaken or proceed with surgery. The background paper covers recommendations on drugs, new equipment, teaching and training.
Collapse
Affiliation(s)
- M C Mushambi
- Department of Anaesthesia, Leicester Royal Infirmary, Leicester, UK
| | - S M Kinsella
- Department of Anaesthesia, St Michael's Hospital, Bristol, UK
| | - M Popat
- Nuffield Department of Anaesthesia, Oxford University Hospital NHS Trust, Oxford, UK
| | - H Swales
- Department of Anaesthesia, University Hospitals Southampton Foundation Trust, Southampton, UK
| | - K K Ramaswamy
- Department of Anaesthesia, Northampton General Hospital, Northampton, UK
| | - A L Winton
- Department of Anaesthesia, St Michael's Hospital, Bristol, UK
| | - A C Quinn
- Department of Anaesthesia, James Cook University Hospital, Middlesborough, UK.,Leeds University, Leeds, UK
| | | | | |
Collapse
|
11
|
Frerk C, Mitchell VS, McNarry AF, Mendonca C, Bhagrath R, Patel A, O'Sullivan EP, Woodall NM, Ahmad I. Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults. Br J Anaesth 2015; 115:827-48. [PMID: 26556848 PMCID: PMC4650961 DOI: 10.1093/bja/aev371] [Citation(s) in RCA: 1200] [Impact Index Per Article: 133.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2015] [Indexed: 02/06/2023] Open
Abstract
These guidelines provide a strategy to manage unanticipated difficulty with tracheal intubation. They are founded on published evidence. Where evidence is lacking, they have been directed by feedback from members of the Difficult Airway Society and based on expert opinion. These guidelines have been informed by advances in the understanding of crisis management; they emphasize the recognition and declaration of difficulty during airway management. A simplified, single algorithm now covers unanticipated difficulties in both routine intubation and rapid sequence induction. Planning for failed intubation should form part of the pre-induction briefing, particularly for urgent surgery. Emphasis is placed on assessment, preparation, positioning, preoxygenation, maintenance of oxygenation, and minimizing trauma from airway interventions. It is recommended that the number of airway interventions are limited, and blind techniques using a bougie or through supraglottic airway devices have been superseded by video- or fibre-optically guided intubation. If tracheal intubation fails, supraglottic airway devices are recommended to provide a route for oxygenation while reviewing how to proceed. Second-generation devices have advantages and are recommended. When both tracheal intubation and supraglottic airway device insertion have failed, waking the patient is the default option. If at this stage, face-mask oxygenation is impossible in the presence of muscle relaxation, cricothyroidotomy should follow immediately. Scalpel cricothyroidotomy is recommended as the preferred rescue technique and should be practised by all anaesthetists. The plans outlined are designed to be simple and easy to follow. They should be regularly rehearsed and made familiar to the whole theatre team.
Collapse
Affiliation(s)
- C Frerk
- Department of Anaesthesia, Northampton General Hospital, Billing Road, Northampton NN1 5BD, UK
| | - V S Mitchell
- Department of Anaesthesia and Perioperative Medicine, University College London Hospitals NHS Foundation Trust, 235 Euston Road, London NW1 2BU, UK
| | - A F McNarry
- Department of Anaesthesia, NHS Lothian, Crewe Road South, Edinburgh EH4 2XU, UK
| | - C Mendonca
- Department of Anaesthesia, University Hospitals Coventry & Warwickshire NHS Trust, Clifford Bridge Road, Coventry CV2 2DX, UK
| | - R Bhagrath
- Department of Anaesthesia, Barts Health, West Smithfield, London EC1A 7BE, UK
| | - A Patel
- Department of Anaesthesia, The Royal National Throat Nose and Ear Hospital, 330 Grays Inn Road, London WC1X 8DA, UK
| | - E P O'Sullivan
- Department of Anaesthesia, St James's Hospital, PO Box 580, James's Street, Dublin 8, Ireland
| | - N M Woodall
- Department of Anaesthesia, The Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, UK
| | - I Ahmad
- Department of Anaesthesia, Guy's and St Thomas' NHS Foundation Trust, Great Maze Pond, London SE1 9RT, UK
| |
Collapse
|
12
|
Russell T, Ng L, Nathan E, Debenham E. Supplementation of standard pre-oxygenation with nasal prong oxygen or machine oxygen flush during a simulated leak scenario. Anaesthesia 2014; 69:1133-7. [DOI: 10.1111/anae.12630] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2014] [Indexed: 11/26/2022]
Affiliation(s)
- T. Russell
- King Edward Memorial Hospital; Western Australia Australia
- Sir Charles Gairdner Hospital; Nedlands Western Australia Australia
| | - L. Ng
- King Edward Memorial Hospital; Western Australia Australia
| | - E. Nathan
- Women and Infants Research Foundation; Subiaco Western Australia Australia
| | - E. Debenham
- King Edward Memorial Hospital; Western Australia Australia
| |
Collapse
|
13
|
De Jong A, Jung B, Jaber S. Intubation in the ICU: we could improve our practice. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2014; 18:209. [PMID: 25029179 PMCID: PMC4057212 DOI: 10.1186/cc13776] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
14
|
Jung B, Azuelos I, Chanques G, Jaber S. How to improve preoxygenation before intubation in patients at risk? TRENDS IN ANAESTHESIA AND CRITICAL CARE 2012. [DOI: 10.1016/j.tacc.2011.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
15
|
Porter R, Wrench IJ, Freeman R. Preoxygenation for general anaesthesia in pregnancy: is it adequate? Int J Obstet Anesth 2011; 20:363-5. [PMID: 21907562 DOI: 10.1016/j.ijoa.2011.07.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Accepted: 07/05/2011] [Indexed: 11/18/2022]
|
16
|
Philips AS, Wrench IJ, Freeman R. Service evaluation of pre-oxygenation for emergency surgery under general anaesthesia. Anaesthesia 2010. [DOI: 10.1111/j.1365-2044.2009.06184_22.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|