Final answer:
One of the key findings associated with a ruptured ectopic pregnancy is severe shoulder pain. Other signs and symptoms may include lower abdominal pain, vaginal bleeding, and dizziness.
Step-by-step explanation:
Ruptured ectopic pregnancy is a medical emergency that occurs when the fertilized egg implants outside of the uterus, usually in the fallopian tube. One of the key findings associated with this condition is a report of severe shoulder pain, which occurs when there is bleeding into the abdominal cavity from the ruptured tube. Other signs and symptoms may include lower abdominal pain, vaginal bleeding, and dizziness.
It is important to note that with a ruptured ectopic pregnancy, the fetus is not implanted in the uterus. Therefore, a transvaginal ultrasound would not indicate a fetus in the uterus. Additionally, serum progesterone levels would not be greater than the expected reference range, as progesterone is typically produced by the corpus luteum in the ovary after implantation in the uterus.