The editors are grateful to the following companies for their help with illustrations of equipment.
Ambu Ltd, St Ives, Cambridgeshire; Medtronic Physio Control, Watford; Cook Critical Care (UK), Letchford, Hertfordshire;
Laerdal Medical Ltd, Orpington, Kent; Medtronic, Watford, Hertfordshire; St Jude, Coventry, Warickshire; Vitalograph Ltd, Maids
Moreton, Buckingham; Zoll Medical (UK) Ltd, Manchester. The figure of implantable cardioverter defibrillators from 1992 and
2002 is supplied by C D Finlay, CRT coordinator, Guidant Canada Corporation, Toronto.