Prenatal ultrasound: a tale of two cities.

At the beginning of the 21st century, community-based physicians have a technology which is safe, noninvasive and relatively inexpensive. It allows immediate access to visual data inside the body for the evaluation of health and disease. Prenatal ultrasound is vital for the efficient provision of preventive care even in community health centers, where physicians may not be the delivering physicians. To assess the frequency of this diagnostic technology, a longitudinal study of 36 months tabulated prenatal ultrasound scans performed in two community-based offices providing generalist healthcare from 2001 through 2003. Between the two offices, 68,938 patients were seen, 679 deliveries were attended and 1,286 medically indicated prenatal ultrasound examinations were performed. Prenatal ultrasound scans--compared to other common office procedures, such as electrocardiograms, chest radiographs, circumcisions, blood sugar checks, Papanicolaous and colposcopies--emerged as one of the most frequently preformed diagnostic tests in the office. Based on these results, medical educators preparing generalist physicians for community medicine may want to consider some training in prenatal ultrasound. Future research can confirm the generalizability of the findings of this pilot study in two urban health centers.