Task sharing for increasing access to obstetric ultrasonography: a formative qualitative study of nurse-led scanning with telemedicine review in Kenya

The informal settlements of Nairobi have higher neonatal and infant mortality rates than the average for Nairobi. Universal access to important diagnostics like ultrasonography is poor and inequitable due to the high cost of devices and limited availability of skilled sonographers. Recent advances of mobile ultrasound probes connected to smartphones, with or without artificial intelligence support, have improved access to devices; but skills to perform and interpret scans continue to be limited. The SonoMobile intervention involved training nurse-midwives to conduct point-of-care obstetric ultrasound scans in antenatal care clinics in urban informal settlements. Scan data and images were shared, using telemedicine technology, with remote sonographers, who reviewed scan images and data, and provided reports. This study of 61 respondents from diverse stakeholder groups describes the acceptability, utility and considerations for sustainability of nurse-led, point-of-care obstetric ultrasonography with telemedicine review. Perceived value of nurse-led obstetric ultrasonography includes improving access and affordability of obstetric ultrasonography services, timely identification and referral of high-risk pregnancies, and improving awareness of appropriate antenatal care among underserved populations. The relative affordability of SonoMobile was described as a critical enabler for a business model targeting low- and middle-income segments of the population, and for increasing quality and equity of antenatal care coverage. Areas highlighted for improvement include strengthening supervision of nurse trainees, broadening the scope of nurse training and development of clear regulatory guidelines for nurse-led obstetric ultrasonography. The study highlights the complex task shifting required to provide universal access to a life-saving technology in a low- and middle-income country health system.