MDCalc

Aldrete Score

Assesses readiness for discharge from post-anesthesia care unit (PACU).

This tool includes options for:

  • Modified Aldrete Score (MAS).
  • Expanded Postanesthetic Recovery Score for Patients Having Anesthesia on Ambulatory Basis (PARSAP).

Transition goal

Result:

Please fill out required fields.
Advice

Pain, nausea/vomiting, temperature, bleeding, and surgical-site issues are not directly assessed by the 5-item score; evaluate them separately and escalate monitoring or level of care as indicated.

Management

Thresholds may vary by institution; refer to your local protocols.

Inpatient surgery:

  • Score ≥9 and clinically stable: Transition to Phase II or an inpatient unit per facility protocol.
  • Score <9 (or any category with a score of 0): 
    • Identify the cause (e.g., hypoxia, hypotension, somnolence, inadequate motor function).
    • Intervene: airway support, titrate O₂, treat hypoventilation (stimulate, reverse agents if indicated), fluid/vasoactive therapy for hypotension, manage pain/antiemetics.
    • Continue PACU-level monitoring and reassess at intervals until criteria met; escalate to anesthesia if deficits persist.

Ambulatory/same-day surgery:

  • If the patient does not meet fast-tracking criteria (per local protocol):

    • Proceed with Phase I recovery in PACU.

    • Transition to Phase II when MAS ≥9 and clinically stable (similar to above guidance for inpatient surgery).

  • Once PARSAP ≥18 in Phase II: 

    • Appropriate for discharge home.

    • Ensure pain control, minimal nausea and vomiting, and safe ambulation.

    • A responsible escort should be available.

    • Provide clear postoperative instructions.