The nurse assesses a client who just returned to the recovery area after undergoing a balloon angioplasty to improve circulation to the left leg. What assessment finding is the most concerning?

A. Left groin has minimal bruising: Mild bruising at the arterial access site is common after balloon angioplasty and usually resolves without intervention. Minimal bruising alone is not an immediate concern unless accompanied by active bleeding or expanding hematoma. B. Client reports a pain level of 3/10: Mild pain after a procedure is expected and can often be managed with routine analgesics. A pain score of 3/10 is considered low and does not indicate an acute complication requiring immediate intervention. C. Left leg with weakened pedal pulse and is cool to the touch: These findings suggest impaired arterial blood flow, potentially indicating acute limb ischemia or arterial occlusion, which is a medical emergency after angioplasty. Prompt recognition and intervention are critical to prevent tissue necrosis or permanent loss of function. D. Blood pressure 154/78 mmHg: Mildly elevated systolic blood pressure may occur post-procedure due to stress or pain. While it should be monitored and managed, it does not pose the immediate limb-threatening risk indicated by weakened pulses and cool extremity.