Use of an air ambulance system improves time to treatment of patients with acute myocardial infarction.
OBJECTIVE
The aim of this study was to clarify whether a helicopter ambulance system (doctor helicopter system; DHS) could shorten the time interval to coronary intervention in the treatment of patients with acute myocardial infarction (AMI), in comparison with ground ambulance (GA).


METHODS
The time from the emergency call to coronary angiography (CAG time) or to percutaneous coronary intervention (PCI time), and the inhospital outcome were evaluated in 76 AMI patients. Twenty patients were transported by DHS, and the other 56 were by GA.


RESULTS
Both CAG time and PCI time were significantly shorter in the DHS (98.8+/-29.2 min, and 169.6+/-57.4 min) than those of the GA (126.6+/-48.7 min, and 203.2+/-57.0 min; p<0.05) group. Inhospital mortality was lower in the DHS (5.0%) versus the GA (10.7%) group.


CONCLUSIONS
Use of DHS shortened the time interval to coronary intervention and also improved the inhospital prognosis of AMI patients.
Intensive Care Unit, Chiba Hokusoh Hospital, Nippon Medical School, Inbagun, Chiba.
Noritake
N
Hata
Nobuaki
N
Kobayashi
Takahiro
T
Imaizumi
Shinya
S
Yokoyama
Takuro
T
Shinada
Jun
J
Tanabe
Kunito
K
Shiiba
Yuichirou
Y
Suzuki
Hisashi
H
Matsumoto
Kunihiro
K
Mashiko
D000368:Aged; D017732:Air Ambulances; D000552:Ambulances; D015906:Angioplasty, Balloon, Coronary; D017023:Coronary Angiography; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000401:mortality / Q000628:therapy*; D011379:Prognosis; D013997:Time Factors; D016896:Treatment Outcome