I noticed a few posts regarding the spleen, so I thought I would share. I'm not a student, but any information is helpful.
We were covering another area of our health region and got called to a 26A (sick person, non emerg response). Pt had 3 fractured ribs x 4 days. Pt was pale, diaphoretic and complaining of LUQ pain. Vitals O/A were: BP 106/64, Pulse 78 S/R, Resp 16 N/L, SPO2 not taken (due to equipment malfunction). Pt was ambulatory and moved himself to the stretcher. Tenderness noted to palpation of the LUQ (where the fractured ribs were). In the ambulance, Pts BP dropped to 84/40, Pulse of 76 S/R. Attempted 2 IV starts but was unsuccessful. Luckily, short transport time(<5 min). Vitals upon arrival at hospital were pretty much the same as when we got him in the ambulance. Hospital obtained an SPO2 of 95% on room air.
2 days later I was at the same hospital while my GF underwent minor surgery. I saw my Pt from that emerg call on the same floor (looking MUCH better). Turns out, he had ruptured his spleen in the incident he recieved his fractured ribs from. Hospital didn't see it, or possibly didn't look for it as it was probably masked by his rib pain. The day we took him in, he got a CT, had surgery, and recieved 3 units of blood.
The interesting thing is, my pt was going into hypovolemic shock and his heartrate remained normal the whole time. Pulse should have increased as BP dropped. So, just remember that not everything is textbook. I would have attempted more IV starts, but we had already arrived at the hospital.