For example, in Wellington there is a sliding scale of escalation ranging from increasing
frequency of vital signs & discussion with the nurse in charge (for low EWS) through house
surgeon or Patient At Risk (PAR) nurse review (for medium EWS) through to urgent
registrar review or MET call (for high EWS or extreme physiological parameters). A MET
call results in the immediate attendance of an ICU registrar, medical registrar, house
surgeon & PAR nurse, 24-hours-a-day, 7-days-a-week.