For the vast majority of patients who suffer major trauma, their first contact with NHS Wales will be with the ambulance service or EMRTS when they receive initial care at scene.
I'r mwyafrif helaeth o gleifion sy'n dioddef trawma mawr, bydd eu cyswllt cyntaf â GIG Cymru gyda gwasanaeth ambiwlans neu EMRTS pan gânt ofal cychwynnol yn y lleoliad.