Final answer:
A ruptured abdominal aneurysm often presents with symptoms such as severe lower back pain, hypotension, and changes in red and white blood cell counts due to internal bleeding and inflammation.
Step-by-step explanation:
The symptoms that indicate a ruptured abdominal aneurysm typically include severe lower back pain, decreased blood pressure (hypotension), and symptoms related to internal bleeding, such as a decrease in red blood cell count (decreased RBCs) due to the loss of blood. An increase in white blood cell count (increased WBCs) may also be observed as a response to the internal bleeding and inflammation. Other signs to look for are a pulsating sensation near the navel, clammy skin, and rapid heart rate.