1 table omitted
Ambulance crashes are one of many hazards faced by Emergency Medical
Services (EMS) personnel. Although no complete national count of ground ambulance
crashes exists, the total number of fatal crashes involving ambulances can
be ascertained by using the National Highway Traffic Safety Administration
(NHTSA) Fatality Analysis Reporting System (FARS). To characterize risk factors
for EMS workers involved in ambulance crashes, CDC's National Institute for
Occupational Safety and Health (NIOSH) and NHTSA investigated three case reports
of ambulance crashes. This report summarizes these investigations, presents
surveillance data, and discusses recommendations for prevention measures.
NIOSH is identifying and testing alternative measures to reduce injury risk
for EMS workers.
Case 1. In May 2001, an Emergency Medical Technician
(EMT) aged 26 years died when her ambulance was struck head-on by a pick-up
truck at 6:30 a.m. The EMT had been riding unrestrained in the patient compartment
while attending a patient during a nonemergency transport. During the collision,
the EMT struck the front bulkhead of the patient compartment; she died en
route to the hospital from blunt force trauma to the head and chest. The patient
and pick-up driver also suffered fatal injuries. The ambulance driver had
been driving unrestrained and suffered multiple serious injuries, including
a fractured leg.
Case 2. In July 2001, an EMT aged 27 years
died when her ambulance struck an elevated train-track support column at 12:30
p.m. She had been riding unrestrained in the patient compartment while attending
a patient during a nonemergency transport. During the collision, the EMT and
the patient both struck the front bulkhead of the patient compartment. Both
the driver and patient were hospitalized; the EMT was transported to a hospital,
where she was pronounced dead.
Case 3. In March 2002, an EMT aged 22 years
who was driving and a paramedic aged 37 years were injured when their ambulance
struck an oncoming vehicle head-on and overturned. The paramedic was riding
unrestrained on the patient compartment squad bench while attending a patient
during a nonemergency transport. A relative of the patient was seated in the
rear-facing attendant's seat and was wearing a seatbelt. During the collision,
the unrestrained EMT driver sustained minor injuries. The paramedic struck
the interior cabinets and shelves of the patient compartment. The EMT and
the paramedic were transported to a hospital, where the EMT was treated and
released; the paramedic was hospitalized and released 2 days later. The patient's
injuries included scalp and shoulder contusions and a shoulder laceration.
The patient's relative sustained minor internal injuries.
During 1991-2000, the most recent year for which data were available,
300 fatal crashes occurred involving occupied ambulances, resulting in the
deaths of 82 ambulance occupants and 275 occupants of other vehicles and pedestrians.
The 300 crashes involved a total of 816 ambulance occupants. FARS does not
differentiate ambulance workers from passengers among those experiencing nonfatal
injuries in fatal crashes; however, the seating positions for all occupants
and the severity of injuries can be determined from FARS data.
Although which occupants were EMS workers and which were patients or
other passengers cannot be ascertained precisely, calculations using the FARS
"fatal injury at work" variable based on death certificate information indicate
that 27 of the occupants killed were on-duty EMS workers. These comprised
3% of all ambulance occupants and 33% of occupant fatalities.
The majority of the 27 EMS worker fatalities occurred in the front of
the vehicle: 11 (41%) in the driver's seat and five (19%) in the front right-side
seat.* Those coded as "other enclosed" accounted for seven (26%) of the EMS
worker fatalities; these persons probably were working in the patient compartment.
Four EMS workers were listed in "other/unknown" seating positions.
SL Proudfoot, NT Romano, MS, TG Bobick, PhD, PH Moore, Div of Safety
Research, National Institute for Occupational Safety and Health, CDC.
EMS personnel in the United States have an estimated fatality rate of
12.7 per 100,000 workers, more than twice the national average.1 This
report documents 27 ambulance crash-related fatalities among EMS workers over
a 10-year period. The surveillance data and case investigations identify riding
unrestrained as an important risk factor for EMS workers. Among all ambulance
occupants, riding in the patient compartment was associated with greater injury
severity. However, in 27 incidents coded as "fatal injury at work," seven
(26%) of the EMS workers killed were drivers who were not wearing a restraint,
and two (7.4%) were unrestrained in the front right seat. Six (22%) of the
EMS workers killed were not wearing restraints while riding in the patient
In 1966, the National Academy of Sciences cited deficiencies at various
levels of emergency care, including unsuitable ambulances with inadequate
equipment, incomplete supplies, untrained attendees, lack of traffic control,
and lack of voice communication facilities.2 Since 1966, substantial
improvements have been made in communications systems, the routine use of
modern lifesaving equipment, and the level of worker expertise. In addition,
the amount of emergency care has increased in volume, in level of complexity,
and in required competency of EMS workers.3 However, in January
1992, minimal workplace safety research was conducted for EMS personnel, and
statistics related to worker characteristics and job duties were largely unavailable.4 According to a retrospective study investigating characteristics of
fatal ambulance crashes during an 11-year period that emphasized emergency
versus nonemergency use incidents, the majority of ambulance crashes occurred
during emergency use, and rear compartment occupants were more likely to be
injured than those in front.5
Less than half of EMS workers use restraints in the patient compartment.6 In addition, lap-belt restraint systems commonly provided in patient
compartments do not allow full access to the patient. When properly used,
the squad bench lap belts position the EMS worker against the side wall, making
it impossible for the worker to bend forward to access the patient. If the
EMS worker needs to access the cabinets along the driver-side wall, the belts
must be unbuckled to allow the worker to stand up. If CPR or other procedures
such as intubation or insertion of IVs must be performed, EMS personnel might
need to stand over or kneel near the cot. For these reasons, EMS workers often
ride unrestrained, seated on the edge of the squad bench.7 In addition,
unrestrained or improperly restrained patients who become airborne in a crash
might pose an additional injury risk to EMS personnel and to themselves.
The findings in this report are subject to at least three limitations.
First, FARS records only crashes involving a motor vehicle traveling on a
traffic-way customarily open to the public that result in the death of a person
(either a vehicle occupant or nonmotorist) within 30 days of the crash.8 As a result, fatal crashes on private property (e.g., driveways, parking
lots, or private roads) are excluded. Second, which ambulance occupants were
EMS workers cannot be determined precisely by examining injuries by occupation
code. EMS might be provided by local career or volunteer fire departments,
private ambulance companies, or volunteer rescue services. Finally, data about
nonfatal injuries to volunteer firefighters and EMS workers are not included
routinely in occupational injury databases.
CDC recommends that EMS employers ensure that EMS workers use patient
compartment vehicle occupant restraints whenever possible, ensure that drivers
and front-seat passengers of EMS vehicles use the occupant restraints provided,
consider equipping ambulances with patient cots that include upper body restraints,
and ensure that EMS workers who operate ambulances are qualified and trained
appropriately. Ambulance manufacturers should evaluate and develop occupant
protection systems designed to increase the crash survivability of EMS workers
and patients in ambulance patient compartments and ensure that such systems
allow EMS workers mobility to access patients and equipment.
References: 8 available
*A total of 14 fatalities occurred among driver's seat occupants; two
of them were coded "unknown" for "fatal injury at work," and a third was coded
"no." Although an ambulance driver might be an EMS worker, only those coded
positively for "fatal injury at work" were included as EMS workers.
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