Which sign may indicate return of spontaneous circulation (ROSC) during resuscitation?

Which sign may indicate return of spontaneous circulation (ROSC) during resuscitation?

• A. Improved mental status.
• B. Worsening pulse.
• C. Cold extremities.
• D. Decreased perfusion.

Answer: (A)

During resuscitation, the earliest clear sign that circulation has returned is improved cerebral perfusion, which tends to show up as an improvement in mental status and responsiveness. When blood flow is restored, the brain begins to function better again, so the patient may become awake, more alert, or able to respond to commands—a positive indication that ROSC has occurred. The other options point to ongoing poor perfusion or deterioration: a worsening pulse, cold extremities, or decreased perfusion suggest CPR is not yet delivering adequate circulation, so they do not indicate ROSC. After ROSC, you’d also look for a more stable pulse and blood pressure and improved skin color, but improved mental status is a strong early sign that circulation has returned.

During resuscitation, the earliest clear sign that circulation has returned is improved cerebral perfusion, which tends to show up as an improvement in mental status and responsiveness. When blood flow is restored, the brain begins to function better again, so the patient may become awake, more alert, or able to respond to commands—a positive indication that ROSC has occurred. The other options point to ongoing poor perfusion or deterioration: a worsening pulse, cold extremities, or decreased perfusion suggest CPR is not yet delivering adequate circulation, so they do not indicate ROSC. After ROSC, you’d also look for a more stable pulse and blood pressure and improved skin color, but improved mental status is a strong early sign that circulation has returned.