PCC Field Medical Training Battalion – West (FMTB-W) Block 4 Practice Test

These signs come from assessing acute limb compartment syndrome, where growing pressure within a muscle compartment compromises blood flow. The six P’s you should look for are Pain, Pallor, Paresthesia, Pulselessness, Paralysis, and Poikilothermia. Pain is typically severe and out of proportion to exam findings, signaling early involvement. Pallor reflects pale skin from reduced blood flow. Paresthesia indicates nerve irritation or injury. Pulselessness means the distal pulse is absent, showing significant arterial compromise. Paralysis points to loss of motor function from nerve or muscle damage. Poikilothermia describes a cooler limb due to poor perfusion. Pressure itself is not listed as one of the six P’s; it’s the underlying factor causing the syndrome, not a presenting sign by the mnemonic. Clinically, rising intracompart ment pressure leads to these signs, and recognizing them promptly is crucial because urgent decompression is needed to prevent lasting damage.