Cool Extremities in Surgery — Case | Trauma Surgery | SMLE Q#15872
SMLE Question #15872
Surgery
Trauma Surgery
Objective: OBJ-TRAUMA-SHOCK-1
Last updated: January 2026
A 28-year-old previously healthy man is brought to the emergency department 30 minutes after a high-speed motor vehicle collision. He was not wearing a seat belt and reports severe abdominal and pelvic pain. On arrival he is alert and oriented. Vital signs: T: 37.0 °C, BP: 100/60 mmHg, HR: 110/min, RR: 20/min, SpO2: 97% (RA). He is pale with cool extremities and delayed capillary refill. Estimated blood loss at the scene and in the ED is approximately 25% of his total blood volume (Class II hemorrhagic shock). Which of the following physiologic parameters is most expected to be decreased at this stage?
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