[Vibration risk during neonatal transport].
OBJECTIVE
The aim of this paper is to assess the entity of the mechanical vibrations which newborn and medical staff are exposed to and to evaluate the possible risks connected with excessive exposure.


METHODS
Vibrations during a simulated emergency ambulance transport were studied. Vibration values with an accelerometer at the level of the incubator's mattress and at passengers' and pilot's seat level were measured. Mean accelerations (awz) and peak accelerations (awpeak), measured using a ponderation filter, according with ISO standard 2631, were considered.


RESULTS
Inside the incubator an acceleration mean value of 1.33 (+/-0.13) m/s(2) and peak values of 11.8 (+/-0.1) m/s(2) were found. On passengers' seats the awz findings were 0.55 m/s(2) (+/-0.13) and 0.56 m/s(2) (+/-0.08) while awpeak respectively 4.8 m/s(2) (+/-0.1) and 10.2 m/s(2) (+/-0.1). On pilot's seat a mean acceleration of 0.48 m/s(2) (+/-0.08) and an awpeak value of 4.5 m/s(2) (+/-0.1) were found.


CONCLUSIONS
Peak vibration values which newborns are exposed to (11.8 m/s(2)) are high, when compared with acceleration of gravity (9.8 m/s(2)); this can provoke repeated jerks. Environmental stress can easily alter the stability of an ill newborn and interfere with care manoeuvres. Decreasing vibrations in neonatal transport unit could increase the safety of newborns, reducing the risks which newborns are actually exposed to.
Bellieni
C V
CV
Dipartimento di Pediatria, Ostetricia e Medicina della Riproduzione, Università degli Studi di Siena, Siena, Italy. bellieni@iol.it
Pinto
I
I
Stacchini
N
N
Cordelli
D M
DM
Bagnoli
F
F
D006801:Humans; D007231:Infant, Newborn; D012307:Risk Factors; D014187:Transportation of Patients; D014732:Vibration / Q000009:adverse effects*