OBJECTIVE: @entity3810 ( @entity3727 ) is routinely used as an analgesic in obstetrics during labour. Epidemiological studies have linked chronic occupational exposure to @entity3727 to specific health problems, including reproductive risks. Occupational exposure limits (OELs) allow the use of @entity3727 once appropriate preventive and safety measures have been taken. We assessed the effectiveness of a scavenger system (Anevac P-system  , Medicvent Heinen _ L  westein Benelux, Barneveld, the Netherlands) applied in @entity3727 administration during labour in a midwifery-led birthing centre in the Netherlands. METHODS: After informed consent, non-pregnant midwives were trained to administer @entity3727 . @entity3727 was delivered as a 50   :   50 mixture with @entity26 and was self administered by the @entity1 . The scavenging device, containing a double mask and a chin mask, was connected to the local evacuation system vented outside the building. Data on the 8-h time-weighted average (8-h TWA) as well as the 15-min TWA (15-min TWA) were obtained. RESULTS: Thirteen @entity1 were included. Six @entity1 were included in the first study period. In this period the 8-h TWA was not exceeded, however, in all @entity1 , the 15-min TWA occasionally exceeded the OELs. After four additional measures, seven @entity1 were included. After implementation of these measures, the 8-h TWA and 15-min TWA never exceeded the OELs. System leakage was not observed during both study periods. CONCLUSION: The Anevac P-scavenging system during @entity3727 analgesia in labour prevents exceeding OELs in professional workers. The scavenging system appeared acceptable and effective, and can be considered in hospital settings that use @entity3727 as analgesic during labour.

A newly developed scavenging system for administration of XXXX during labour: safe occupational use.

@entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity26 :: ('MESH:D010100', 'Chemical') :: ['oxygen'] @entity3727 :: ('CHEBI:17045', 'Chemical') :: ['N(2) O'] @entity3810 :: ('MESH:D009609', 'Chemical') :: ['Nitrous oxide']
@entity3810 :: (MESH:D009609,Chemical) :: ['nitrous oxide']
