Which term is NOT one of the six P's of acute limb ischemia?

Which term is NOT one of the six P's of acute limb ischemia?

• A. Pain
• B. Pallor
• C. Paresthesias
• D. Pulsus

Answer: (D)

The six P's describe how acute limb ischemia presents: Pain, Pallor, Paresthesias, Paralysis, Pulselessness, and Poikilothermia. Pulsus isn’t one of them because the sign clinicians look for is the absence of a pulse—pulselessness—in the affected limb. A normal or present pulse isn’t itself an indicator of ischemia; it’s the lack of arterial flow that matters. So while each of the other P terms maps to a real sign of compromised perfusion (pain from ischemia, pale skin, numbness, possible weakness, a cool limb), Pulsus would imply a pulse is present, which doesn’t describe the critical sign of arterial occlusion.

The six P's describe how acute limb ischemia presents: Pain, Pallor, Paresthesias, Paralysis, Pulselessness, and Poikilothermia. Pulsus isn’t one of them because the sign clinicians look for is the absence of a pulse—pulselessness—in the affected limb. A normal or present pulse isn’t itself an indicator of ischemia; it’s the lack of arterial flow that matters. So while each of the other P terms maps to a real sign of compromised perfusion (pain from ischemia, pale skin, numbness, possible weakness, a cool limb), Pulsus would imply a pulse is present, which doesn’t describe the critical sign of arterial occlusion.