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These standards1 are recommended for anesthesia professionals throughout the world. They are intended to provide guidance and assistance to anesthesia professionals, their professional societies, hospital and facility administrators, and governments for improving and maintaining the quality and safety of anesthesia care. They were adopted by the World Federation of Societies of Anaesthesiologists on the 13th June 1992, and revisions were ratified on 5th March 2008 and on 19th March 2010.
For some anesthesia services, groups, and departments these standards will represent a future goal, while for others they may already have been implemented and be regarded as mandatory. It is recognized that in some settings facing challenges in resources and organization, not even those standards regarded as mandatory are met at present. The provision of anesthesia under such circumstances should be restricted to procedures which are absolutely essential for the urgent or emergency saving of life or limb, and every effort should be made by those responsible for the provision of healthcare in these areas and settings to ensure that the standards are met. Provision of anesthesia care at standards lower than those outlined as mandatory for anesthesia for elective surgical procedures simply cannot be construed as safe acceptable practice. The most important standards relate to individual anesthesia professionals. Monitoring devices play an important part in safe anesthesia as extensions of human senses and clinical skills rather than their replacement.
Adopting the standardized language of the World Health Organization, minimum standards that would be expected in all anesthesia care for elective surgical procedures are termed “HIGHLY RECOMMENDED” and these are the functional equivalent of “mandatory” standards. These HIGHLY RECOMMENDED standards, indicated in bold type, are applicable throughout any elective procedure, from patient evaluation until recovery (it is recognized, however, that immediate life-saving measures always take precedence in an emergency). In the judgement of the WFSA, these are the minimum standards for anesthesia for a “necessary” procedure (rather than essential and/or emergency) in settings where resources are extremely limited. This does not imply that these standards on their own are ideal or even acceptable in more adequately resourced settings. These HIGHLY RECOMMENDED (functional equivalent of mandatory) standards and (regarding facilities, equipment, and medications) the parallel prescription for “Level 1” or “basic” infrastructure are relevant to any healthcare environment anywhere in which general or regional anesthetics are administered, but not to a setting where superficial procedures involving local anesthetics only are performed. Additional elements of the anesthesia standards should be implemented as resources, organization, and training permit, yielding this paradigm:
See Table 1 for a detailed outline of the integration of the practice standards with the levels of facilities/infrastructure. The goal always in any setting is to practice to the highest possible standards, specifically exceeding those prescribed if that can be accomplished. In spite of some facilities’ limitations, it may be possible to implement elements of the RECOMMENDED standards even in a “basic” setting and, likewise, to implement elements of the Suggested standards even in an “intermediate” setting. The goal is always the best care possible and ongoing improvement by meeting and exceeding the standards for safe practice of anesthesia, starting with all providers meeting the HIGHLY RECOMMENDED standards and striving to meet as many of the RECOMMENDED and Suggested standards as well.
It is anticipated that these standards and the setting/infrastructure specifications will be revised as practice and technology evolve.
Anesthesia services are a vital component of basic healthcare requiring appropriate resources. The WFSA views anesthesia as a medical practice. Medically trained anesthesia specialists should be trained and accredited with clinical and administrative autonomy. When anesthesia is provided by non-medical personnel, these providers should be appropriately trained and accredited as well as directed and supervised by medically qualified specialist anesthesia professionals.
Anesthesia professionals should form appropriate organizations at local, regional, and national levels for the setting of standards of practice, supervision of training and continuing education/continuing professional development with appropriate certification and accreditation, and general promotion of anesthesia as an independent professional specialty. These organizations should form links with appropriate groups within the region and/or country and internationally.
Adequate time, facilities, and financial support should be available for professional training, both initial and continuing, to ensure that an adequate standard of knowledge, expertise, and practice is attained and maintained. Formal certification of training and accreditation to practice is RECOMMENDED.
A record of the details of each anesthetic should be made and preserved with the patient’s medical record. This should include details of the pre-operative assessment and the post-operative course. It is RECOMMENDED that individuals, departments, and regional and national groups collect cumulative data to facilitate the progressive enhancement of the safety, efficiency, effectiveness, and appropriateness of anesthesia care.
Institutional, regional, and/or national mechanisms to provide a continuing review of anesthetic practice should be instituted. Regular confidential discussion of appropriate topics and cases with multidisciplinary professional colleagues should take place. Protocols should be developed to ensure that deficiencies in individual and collective practice are identified and rectified. An anonymous incident reporting system with case analysis and resulting suggested remedies is RECOMMENDED.
A sufficient number of trained anesthesia professionals should be available so that individuals may practice to a high standard without undue fatigue or physical demands. Time should be allocated for education, professional development, administration, research, and teaching.
An anesthesia professional should be dedicated to each patient and be immediately present throughout each anesthetic (general, regional, or monitored sedation), and should be responsible for the transport of the patient to the post-anesthesia recovery facility and the transfer of care to appropriately trained personnel. An anesthesia professional should retain overall responsibility for the patient during the recovery period and should be readily available for consultation until the patient has made an adequate recovery. If responsibility for care is transferred from one anesthesia professional to another, a “handover protocol” should be followed, during which all relevant information about the patient’s history, medical condition, anesthetic status, and plan should be communicated. An anesthesia professional should ensure, if aspects of direct care are delegated before, during, or after an anesthetic, that the person to whom responsibility is delegated is both suitably qualified and conversant with relevant information regarding the anesthetic and the patient. Where it is impossible for this standard to be attained and the surgeon or other individual assumes responsibility for the anesthetic, these arrangements should be reviewed and audited by an appropriately trained anesthesia professional.
Appropriate equipment and facilities, adequate both in quantity and quality, should be present wherever anesthesia and recovery from it is undertaken, including outside traditional hospital operating room suites, such as procedure or imaging suites and outpatient facilities or offices. In-service training and verification of an individual’s ability to use a specific piece of equipment correctly and safely is required. Formal certification as documentation of this process is Suggested. A list of facilities, infrastructure elements and supplies at the three levels and suggestions as to the order in which additions should be made when possible as resources permit is presented in Table 1. Anesthesia equipment should conform to relevant national and international standards. Appropriate anesthetic, resuscitative, and adjuvant medications are required at each level.
The 2009 Safe Surgery Checklist (http://www.who.int/patientsafety/information_centre/documents/en/index.html) consists of evidence based vital checks in 3 phases: before starting anesthesia, before starting surgery and at the end of surgery. The use of the checklist (locally modified if appropriate) in anesthesia care is HIGHLY RECOMMENDED.
The first and most important component of peri-anesthetic care, including monitoring of the anesthesia delivery system and the patient, is the continuous presence of a vigilant anesthesia professional during anesthesia. In addition to use of monitoring technology, careful continuous clinical observation is required because equipment may not detect clinical deterioration as rapidly as the skilled professional. If an emergency requires the brief temporary absence of the primary anesthesia professional, judgment must be exercised comparing the emergency with the anesthetized patient’s condition and in the selection of the person left responsible for the anesthetic during the temporary absence.
The patient must be evaluated by an anesthesia professional prior to administration of anesthesia and an appropriate anesthetic plan formulated. The anesthesia professional must ensure that all necessary equipment is present and functions correctly prior to initiation of anesthesia care. The anesthesia professional should ensure that assistance is available as needed and that the assistant is competent at, or has been instructed in, the necessary tasks. The development of protocols and check-lists to facilitate such verification is RECOMMENDED.
Supplemental oxygen is HIGHLY RECOMMENDED for all patients undergoing general anesthesia. The anesthesia professional should verify the integrity of the oxygen supply. It is RECOMMENDED that the inspired oxygen concentration be monitored throughout each anesthetic with an instrument fitted with a low oxygen concentration alarm. An oxygen supply failure alarm and a device protecting against the delivery of an hypoxic gas mixture are RECOMMENDED. Systems with interlocks (tank yokes, hose connections, etc.) should be used to prevent misconnection of gas sources.
Tissue oxygenation should be monitored continuously. For visual examination, adequate illumination and exposure of the patient should be ensured whenever practicable. Continuous use of pulse oximetry is HIGHLY RECOMMENDED.
The adequacy of the airway and ventilation should be continuously monitored at least by observation and auscultation whenever practicable.Where a breathing circuit is used, the reservoir bag should be observed. Continuous monitoring with a precordial, pretracheal, or oesophageal stethoscope is RECOMMENDED. Confirmation of the correct placement of an endotracheal tube and also the adequacy of ventilation by continuous measurement and display of the expired carbon dioxide waveform and concentration (capnography) is RECOMMENDED. When mechanical ventilation is employed, a “disconnect alarm” should be used throughout the period of mechanical ventilation. Continuous measurement of the inspiratory and/or expired gas volumes, and of the concentration of volatile agents, is Suggested.
The circulation should be monitored continuously. Palpation or display of the pulse and/or auscultation of the heart sounds should be continuous. Continuous monitoring and display of the heart rate with a pulse oximeter is HIGHLY RECOMMENDED; an electrocardiograph is RECOMMENDED. The availability of a defibrillator is RECOMMENDED.
The adequacy of tissue perfusion should be monitored continually by clinical examination. Continuous monitoring with a pulse oximeter is HIGHLY RECOMMENDED; continuous monitoring with a capnograph is RECOMMENDED.
Arterial blood pressure should be determined at appropriate intervals (usually at least every 5 minutes and more frequently if indicated by clinical circumstances). Automated non-invasive blood pressure measurements have many advantages in anesthesia; continuous measurement and display of arterial pressure is Suggested in appropriate cases.
A means of measuring the temperature should be available and should be used at frequent intervals where clinically indicated (e.g. prolonged or complex anesthetics, young children). The continual measurement of temperature in patients in whom a change is anticipated, intended, or suspected is RECOMMENDED. The availability and use of continuous electronic temperature measurement is Recommended.
When neuromuscular blocking drugs are given, the use of a peripheral nerve stimulator is RECOMMENDED.
The depth of anesthesia (degree of unconsciousness) should be regularly assessed by clinical observation. The continuous measurement of inspired and expired concentrations of anesthetic gases and volatile agents is Suggested. The application of an electronic device intended to measure brain function (consciousness), while controversial and not universally recommended, should be considered, particularly in cases with high risk of awareness under general anesthesia.
Available audible signals (such as the variable pitch pulse tone of the pulse oximeter) and audible alarms (with appropriately set limit values) should be activated at all times and loud enough to be heard throughout the operating room.
All patients who have had an anesthetic affecting central nervous system function and/or a loss of protective reflexes should remain where anesthetized until recovered or be transported safely (with care and monitoring as indicated) to a specifically designated recovery location for post-anesthesia recovery. See General Standards, Section 7, for delegation of responsibilities to dedicated qualified recovery personnel.
All patients should be observed and monitored in a manner appropriate to the state of their nervous system function, vital signs, and medical condition with emphasis on the adequacy of oxygenation, ventilation, circulation, and temperature. Supplementation of clinical monitoring with quantitative methods analogous to intra-anesthetic patient care described above is RECOMMENDED. Specifically, pulse oximetry is HIGHLY RECOMMENDED until consciousness has recovered (i.e. the patient is no longer anesthetized).
All patients are entitled to appropriate efforts to prevent and alleviate postoperative pain employing available appropriate medications and modalities; these efforts are therefore HIGHLY RECOMMENDED. Usually, the involved anesthesia professional assumes initial responsibility for this.
With permission from the Department of Knowledge Management and Sharing of the World Health Organization, these Standards incorporate and elaborate upon components of: WHO Guidelines for Safe Surgery. Safe Surgery Saves Lives. WHO Press: World Health Organization, Geneva, 2009. http://whqlibdoc.who.int/publications/2009/9789241598552_eng.pdf (accessed 25th June 2010).
The Preanesthetic Checklist is an exact reproduction of Figure 2.1 of this publication.
The Table has been adapted from: Surgical Care at the District Hospital. World Health Organization, Geneva, 2003 http://whqlibdoc.who.int/publications/2003/9241545755.pdf (accessed 25th June 2010), and from: International Taskforce on Anaesthesia Safety. International standards for a safe practice of anaesthesia. European Journal of Anaesthesiology 1993; 10 (Suppl 7): 12–15.
The Authors thank Dr M.N. Cherian for her invaluable contribution as a member of the Safe Anesthesia Working Group to the development of the Standards. The authors gratefully acknowledge the support and input of Dr. Atul Gawande and the other leaders of the WHO “Safe Surgery Saves Lives” program (notably Drs G. Dziekan, W.R. Berry, T.G. Weiser and A.B. Haynes), as well as the constant encouragement and facilitation by the WFSA leadership, particularly current WFSA President Dr. Angela Enright.
Conflicts of interest A. F. Merry has financial interests in Safer Sleep LLC.
Open Access This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
1For the genesis and evolution of these standards, please see the accompanying article: Merry AF, Cooper JB, Soyannwo O, Wilson IH, Eichhorn, JH. An iterative process of global quality improvement: the International Standards for a Safe Practice of Anesthesia 2010. Canadian Journal of Anesthesia 2010;57(11).
This article is reproduced with permission from the World Federation of Societies of Anaesthesiologists (WFSA) and appeared previously on the WFSA website (http://www.anaesthesiologists.org/).
A.F. Merry, J.B. Cooper, O. Soyannwo, I.H. Wilson, J.H. Eichhorn, these authors are in the Safe Anesthesia Working Group of the World Health Organization’s Safe Surgery Saves Lives Global Challenge
A.F. Merry is Chair of the Quality and Safety Committee and I.H. Wilson is Chair of the Publications Committee of the World Federation of Societies of Anaesthesiologists.