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Author: search.filters.author.Kathryn DrennanSubject: search.filters.subject.Protocol (science)

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    69 testing a telediagnostic obstetric ultrasound system without a trained sonographer in a low-resource Peruvian clinic
    (Elsevier, 2021-02-01)
    94% of all maternal deaths occur in low and lower middle-income countries. Lack of access to Obstetric (OB) ultrasound (US) may be one modifiable contributing factor. We studied the efficacy of an OB US protocol with telediagnostic US system (OB US system) implemented by health workers without prior US experience to increase access to imaging in low-resource settings.
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    Assessment of a brief standardized obstetric ultrasound training program for individuals without prior ultrasound experience
    (Lippincott Williams & Wilkins, 2022-10-08)
    ABSTRACT: Obstetric volume sweep imaging (OB VSI) is a simple set of transducer movements guided by external body landmarks that can be taught to ultrasound-naive non-experts. This approach can increase access to ultrasound in rural/low-resources settings lacking trained sonographers. This study presents and evaluates a training program for OB VSI. Six trainees without previous formal ultrasound experience received a training program on the OB VSI protocol containing focused didactics and supervised live hands-on ultrasound scanning practice. Trainees then independently performed 194 OB VSI examinations on pregnancies >14 weeks with known prenatal ultrasound abnormalities. Images were reviewed by maternal-fetal medicine specialists for the primary outcome (protocol deviation rates) and secondary outcomes (examination quality and image quality). Protocol deviation was present in 25.8% of cases, but only 7.7% of these errors affected the diagnostic potential of the ultrasound. Error rate differences between trainees ranged from 8.6% to 53.8% ( P < 0.0001). Image quality was excellent or acceptable in 88.2%, and 96.4% had image quality capable of yielding a diagnostic interpretation. The frequency of protocol deviations decreased over time in the majority of trainees, demonstrating retention of training program over time. This brief OB VSI training program for ultrasound-naive non-experts yielded operators capable of producing high-quality images capable of diagnostic interpretation after 3 hours of training. This training program could be adapted for use by local community members in low-resource/rural settings to increase access to obstetric ultrasound.