When assessing for compartment syndrome, which of the following are components of the "5 Ps" that should be evaluated? Select all that apply

Brief Introduction: Compartment syndrome occurs when increased interstitial pressure within a myofascial compartment compromises local circulation. This elevation in pressure leads to ischemic necrosis of muscles and nerves, necessitating immediate surgical decompression via fasciotomy to prevent permanent neuromuscular deficit or limb loss following traumatic injury or revascularization. Rationale: A. Pallor indicates significant vascular compromise and late-stage ischemia within the affected limb. As intracompartmental pressure exceeds capillary perfusion pressure, the skin becomes pale and cool, signaling that the tissues are no longer receiving adequate oxygenated blood flow to maintain viability. B. Pulselessness is an ominous, late sign of compartment syndrome indicating total arterial occlusion. By the time distal pulses are absent, irreversible tissue death has likely occurred; therefore, clinicians should not wait for this finding to initiate emergency surgical consultation and intervention. C. Paralysis represents a late-stage manifestation of prolonged nerve and muscle ischemia. The inability to perform active movement suggests that the motor nerves have been severely compressed, leading to functional loss that may become permanent without rapid reduction of the internal compartment pressures. D. Paresthesia is often one of the earliest subjective indicators of nerve compression. Patients report "pins and needles" or sensory changes in the web space or distal extremities, reflecting neural hypoxia as the rising pressure begins to impede the microvasculature supplying the peripheral nerves. E. Pitting edema is not a component of the 5 Ps, although tissue tension is a hallmark. While the limb may appear swollen and feel rock hard on palpation, the classic diagnostic mnemonic focuses on sensory, motor, and vascular changes rather than the presence of fluid-related pitting. F. Pain is the most sensitive and earliest sign, specifically pain that is out of proportion to the injury. It is typically exacerbated by passive stretching of the muscles within the affected compartment, serving as a critical clinical warning of impending ischemic injury.