Technical note: simple vibroacoustic foetal stimulator.

Primary Objective: To build and test a simple vibroacoustic foetal stimulator.

Research Design: A vibroacoustic foetal stimulator was constructed and subjected to bench testing. Clinical trial was carried out in comparison to an electro laynx.

Main Outcome And Results: Screening specificity of 98% and 100% sensitivity was achieved, with no decrease in specificity due to user's maladjustments. The device was characterized by simple use, maintenance and disinfection.

Conclusions: The device is a good screening instrument for foetal health in prenatal care, despite its simplicity and low price.