A newborn female is being assessed in the delivery room immediately after an uncomplicated spontaneous vaginal delivery at 39 weeks gestation. Her 32-year-old mother, a primigravida, had well-controlled gestational hypertension. The infant's trunk and face appeared pink, but her extremities were noted to be blue. Auscultation revealed a heart rate of 88 beats per minute. Her respiratory effort was noted as shallow and irregular, producing an infrequent, weak cry. She offered a grimace and a slight withdrawal when a nasopharyngeal catheter was introduced. She exhibited moderate flexion of the extremities. Initial steps of drying and tactile stimulation have been completed. Umbilical cord blood gas analysis results are pending. Based on these findings, what is the most accurate Apgar score, and what is the immediate management strategy indicated?