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A Journal on Pediatrics, Neonatology, Adolescent Medicine,
Child and Adolescent Psychiatry

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Minerva Pediatrica 2004 April;56(2):207-12

language: Italian

Vibration risk during neonatal transport

Bellieni C. V., Pinto I., Stacchini N., Cordelli D. M., Bagnoli F.


Aim. 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/s2 and peak values of 11.8 (±0.1) m/s2 were found. On pas-sengers' seats the awz findings were 0.55 m/s2 (±0.13) and 0.56 m/s2 (±0.08) while awpeak respectively 4.8 m/s2 (±0.1) and 10.2 m/s2 (±0.1). On pilot's seat a mean acceleration of 0.48 m/s2 (±0.08) and an awpeak value of 4.5 m/s2 (±0.1) were found.
Conclusion. Peak vibration values which newborns are exposed to (11.8 m/s2) are high, when compared with acceleration of gravity (9.8 m/s2); 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.

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