Final answer:
A fever over 100.4° F (38° C) postpartum would be considered a danger sign, as it can indicate an infection that needs immediate attention.
Step-by-step explanation:
When assessing a postpartum client after a vaginal birth, the Licensed Vocational Nurse/Licensed Practical Nurse (LVN/LPN) should consider a fever more than 100.4° F (38° C) a potential danger sign. A high fever could be indicative of an infection, such as endometritis or a urinary tract infection, which are postpartum complications that need prompt attention and treatment. While the presence of lochia rubra is a normal finding within the first 2-3 days after delivery, the fundus should not be above the umbilicus, and it should be firm to indicate that the uterus is properly contracting down to help prevent excessive bleeding. If the fundus is not firm or is above the umbilicus, this could indicate uterine atony or retained placental fragments, both of which could lead to postpartum hemorrhage.