Which finding in a head-to-toe assessment of a newborn would require notification of the primary practitioner?

In a head-to-toe assessment of a newborn, the presence of bilateral single palmar creases is significant enough to warrant notification of the primary practitioner. This finding may indicate a chromosomal abnormality, most notably Down syndrome, where single transverse palmar creases can be observed. Healthcare providers pay particular attention to such physical traits, as they can accompany other clinical signs and affect the newborn's overall health and development.

While hypotonic reflexes, symmetrical limb movements, and a normal cry can be within the realm of normal findings, bilateral single palmar creases stand out as they may signify a need for further evaluation and potential interventions. Monitoring for additional signs and symptoms is essential to ensure that any developmental or health concerns are addressed promptly.