Twenty anaesthetic rooms and operating theatres in Northern Ireland we
re visited in both 1990 and 1992. Data was collected on the availabili
ty and use of anaesthetic monitoring. In the anaesthetic rooms there w
ere few pulse oximeters. In the theatres more monitors were available
and in use. Some change in practice had occurred between 1990 and 1992
, notably an increase in the monitoring of ventilation' and in the ava
ilability of printer facilities for documentation of anaesthetic recor
ds.