A collapsed overseas visitor

During one of your hospital shifts you are asked by the emergency medicine consultant to see a patient whom the triage sister has categorised as category 2 (to be seen in 10 minutes). On the ambulance stretcher with oxygen and an intravenous line running is an anxious white-haired man with an even more anxious well-dressed white-haired lady holding his hand. You introduce yourself to them and become part of the caravan into the resuscitation cubicle. You presume the lady to be his wife although many an assumption like that has been quite wrong and embarrassing. That is why you now tactfully find out the relationship.