Research into emergency care encompasses the whole chain of care from the moment the 112 call is made, to immediate care at the accident and emergency unit.
Some of Maaret Castrén's projects are looking at the chain of care in cardiac arrest, resuscitation skills and emergency care technology. Improvements are needed. In Stockholm alone, accident and emergency units handle half a million patient attendances annually, representing about 330,000 patients. About 20 per cent of these are attributable to frequent attenders.