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.