Progression through the various phases in the postanesthesia recovery unit (PACU) depends upon:
1. The client's progress toward physiological homeostasis.
2. The severity of the procedure the client underwent.
3. The temperature and environment of the unit.
4. The attentiveness and caring of the nursing staff.
The client's progress toward physiological homeostasis.
Rationale: The client's recovery and progress through the various phases while in the PACU depends on how quickly the client returns to physiological homeostasis. The other answer choices do not determine the client's progress.
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