StandardsNOTICE OF LECTURE OPPORTUNITY BY DR DAVID HUMPHREY
Dr Humphrey now lectures worldwide and in the UK
Titles
- "Simple, safe low-flow anaesthesia"
- "The Humphrey ADE-circle system - an update"
- "Safe low-flow anaesthesia in veterinary practice"
- "The advantages of deliberate rebreathing with the ADE during controlled ventilation"
Dr. David Humphrey, the designer of the Humphrey ADE anaesthetic system, has been lecturing for over 10 years on topics related to his research and the practical and clinical implications of the new low-flow techniques that have resulted. These lectures help bring the anaesthetist right up to date with new ideas that often take more than 5 years to reach the textbooks. They also bring the trainee anaesthetist up to date with information often required for exams.
That the Humphrey ADE-circle system has been accepted as a significant advance in safe anaesthesia has been demonstrated by the fact that, to date, the Humphrey ADE system has been used in over 200 teaching and general hospitals in the UK and world-wide for an estimated 10 million anaesthetics.
Simple, safe low-flow anaesthesia
covers the basic principles of the ADE-circle system in both semi-closed and re-cycling modes, information of much value to those going for college exams. The lecture then develops into an exploration of new concepts in his breathing system design that has been substantiated to use low fresh gas flows and to function "better than theory". The rationale and function of the design of the Humphrey ADE system is explained. The results and interpretations of capnographs from the clinical trials are presented in relation to spontaneous, manual and controlled ventilation in adults and children.
Of particular interest to consultants is the discussion of the controversial observations recorded by Dr Humphrey; for example the fact that the Humphrey ADE system has been substantiated to be more efficient that the Magill during spontaneous respiration. Also in paediatric use, the Humphrey ADE system has now gained a place as an efficient low-flow system with complete control of theatre pollution. With the introduction of sevoflurane, costs can be halved when compared to the T-piece for spontaneous respiration. The deliberate use of a valve in a paediatric system and the physiological benefits of a newly designed ADE exhaust valve which offers "PEEP" are presented. All these new concepts are explored and explanations given.
With the recent addition of the soda-lime canister to the ADE system, Dr Humphrey completes the lecture with an examination of the safe use of low flows of 1 l/min with new anaesthetic agents such as sevoflurane and desflurane.
"The Humphrey ADE-circle system - an update"
Offers a review lecture to those already familiar with the ADE system. More recently Dr Humphrey has designed a soda-lime canister for attachment to the ADE system. As the updated ADE-circle system now offers the merits of both semi-closed systems and circle systems, a new lecture has been structured to cover both these versions, with special reference to new agents such as sevoflurane and desflurane and their pharmaco-kinetic advantages.
"Safe low-flow anaesthesia in veterinary practice"
Is aimed at vet use in small animal practice. It covers the basic principles of use, particularly those relevant to cats and dogs and smaller species.
"The advantages of deliberate rebreathing with the ADE during controlled ventilation"
Details of this lecture will be made available shortly.
Invitations to lecture
In Great Britain the best months are May/June and September/October each year. During these periods he will be available to lecture to anaesthetists at Audit or Area Association meetings. If your department would like to invite Dr Humphrey along, please act as soon as possible to assist with planning. The lecture lasts about 45-50 minutes, with time for questions at the end. The lecture has been used by many hospitals as part of their consultant CME programme and will normally count for 1 CME point, though as Dr Humphrey is an international speaker, 2 CME points can be applied for.
Please pass this invitation to the CME organiser, Head of your Department, or College Tutor. You will find a reply form at the end of this section.
Outside Great Britain, special arrangements must be made with Dr Humphrey. Generally a lecture tour to a country should involve a number of major centres and perhaps the national anaesthetic congress or meeting.
Should you wish to invite Dr Humphrey to lecture, please send an email to david@anaequip.com
About the lecturer:
Dr. David Humphrey was born in London in 1947 and qualified from University College Hospital, London University in 1970. After completing his house jobs he went out to Zululand in South Africa to work in a mission hospital. Whilst there he was obliged to undertake all disciplines of medical practice, anaesthesia being a necessary adjunct for surgery. Administering general anaesthesia was not simple as there was a confusing choice of apparatus with different advantages. It became apparent there was a need for a simple, safe and efficient anaesthetic breathing system such that non-specialist anaesthetists could easily use.
After working in mission hospitals for 4 years, Dr Humphrey joined the University of Natal, Durban in 1978 to specialize in anaesthesia. He immediately embarked on a research project testing out different designs of multi-purpose breathing systems. In 1981, after 3 years work, he won two research awards for this work, one from the Royal Society of Medicine (anaesthetic section) and one from the South African Society of Anaesthetists.
In 1982 Dr Humphrey became a lecturer in the Physiology department of the University of Natal, an obvious place to further investigate the physiological changes that occur under anaesthesia. Such research was to play an important part in the re-design of equipment for children. By 1985 the Humphrey ADE multipurpose anaesthetic breathing system was awarded a Shell Design Award. Over the next 10 years the efficiency of the system was independently confirmed by various eminent research departments.
In 1986 Dr Humphrey turned his attention to anaesthesia for children. Trials in children using the ADE system showed that fresh gas flows could be more than halved compared to the T-piece and with simple pollution control. Dr Humphrey continued to examine the advantages of "PEEP" (positive end-expiratory pressure) in preventing lung collapse during anaesthesia especially in children. In 1991 a new PEEP valve (but with low impedance to flow) was tested; two years later it was made standard on the ADE system with immediate acceptance.
With increasing requests to lecture overseas, Dr Humphrey resigned from the University of Natal in 1995 but continued his research independently. In 1998 Dr Humphrey designed a soda lime canister that was quickly attachable to the main ADE unit. This re-cycling option was motivated by the increasing benefit of low flow systems using sevoflurane and desflurane. To date, Dr Humphrey has succeeded in designing a system that combines every advantage of all other breathing systems, but with significant unique advantages of its own. The Humphrey ADE-circle system has been widely accepted into anaesthetic practice, an estimated 10 million anaesthetics being safely administered with it by 1999. Dr Humphrey continues his research and now lectures worldwide.