Vienna suffered an epidemic of heroin abuse in recent years, with drug-deat
hs due to opioids increasing from 62 in 1991 to 143 in 1993. The aim of thi
s study was to make observations about illicit opioid-use with the ambulanc
e service as a data source. From June 1994 to August 1995, the structured r
un records of the ambulance service were reviewed. Those with a presumptive
diagnosis of "heroin or opiate" overdose were collected, characteristics o
f emergencies and patients were analyzed. The run records demonstrated a la
rge number of non-fatal emergencies due to opioids, involving 528 men and 1
79 women in 1087 emergencies. These emergencies were on the average 6.8 tim
es as prevalent as drug-fatalities. A group of 189 persons could be identif
ied, who caused 52.2% of all emergencies and showed a threefold mortality r
ate during the observation period. In Vienna, the records of the municipal
ambulance service provided valuable insights on opioid-abuse. We suggest lo
cal analysis of non-fatal emergencies due to opioids, as this might lead to
a new source of information on illicit abuse of these drugs. (C) 2000 Else
vier Science Inc. All rights reserved.