When should progression of mobilization be continued?

• A. Until patient independence.
• B. Until functional status allows resuming activities and threat to O2 transport minimized.
• C. Until vital signs are stable for 24 hours.
• D. Until pain is zero.

Answer: (B)

In ICU mobilization, progression is guided by safety and functional tolerance rather than a fixed endpoint. The best rule is to continue advancing activity as long as the patient can resume meaningful tasks and their oxygen delivery to tissues remains adequate. Practically, this means you push the activity level when the patient can perform tasks without signs that oxygen transport is being compromised—no dangerous drops in oxygen saturation, stable hemodynamics, no new or worsening chest pain, and no intolerable symptoms. If increasing activity begins to threaten oxygen delivery or safety, you pause or scale back.

That’s why this option is the best: it integrates both the goal of improving function and the critical safety check that oxygen transport to the body remains sufficient during activity. The other ideas miss important safety or practicality aspects: independence isn’t the immediate gate for progression, since many patients progress with partial independence; waiting for 24 hours of stable vital signs is unnecessarily rigid and can slow beneficial mobilization; and requiring zero pain is unrealistic, as some discomfort may be tolerable and controllable with appropriate interventions.