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Modified Aldrete score

Assesses recovery after anaesthesia with five items (activity, respiration, circulation, consciousness and O₂ saturation), indicating when the patient may leave recovery.

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Method · Limits of application

Modified Aldrete 1995: 5 items 0–2, SpO₂ replaces colour, total 0–10

This interface sums the five components of the modified Aldrete for post-anesthesia recovery, with a total from 0 to 10; it does not implement the expanded ten-factor ambulatory instrument. The total alone does not authorize discharge and must be accompanied by clinical assessment and reassessment. The original 1995 tables and the author’s 2007 adaptation differ in the wording of the circulatory boundaries; exactly 20% remains ambiguous. The 1995 tables also differ in the lowest oxygenation score. These differences require clinical adjudication and do not allow complete equivalence to be claimed solely from the sum.

Conditions of use

Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.

Documented parameters

Motor activity
Breathing
Circulation (blood pressure relative to preanesthetic baseline)
Consciousness
O₂ saturation

3/3 reference cases checked. Numerical tests are not clinical validation.

Sources and documentation

Documented formula

Transcribed from the source or a recorded revision; this is not a clinical recommendation.

Five items scored 0–2 (total 0–10): activity, respiration, circulation, consciousness and O₂ saturation. The 1995 version replaced skin colour with pulse oximetry.

References

Identifier: aldrete-modificado

Original clinical content: Brazilian Portuguese.

Method version

Modified Aldrete 1995: 5 items 0–2, SpO₂ replaces colour, total 0–10

aldrete-modificado@native-2026-10-05+53d8efad5f85

Source for the active edition

The bibliographic edition identifies the source. By itself, it proves neither full conformity of the formula nor clinical approval.

Synthetic cases checked (3)

Synthetic cases for checking the implementation, with no patient data.

Case 1

reference-001

Inputs

Motor activity: Moves all 4 limbs
Breathing: Breathes deeply and coughs
Circulation (blood pressure relative to preanesthetic baseline): Variation ≤ 20%
Consciousness: Fully awake
O₂ saturation: > 92% on room air

{
  "atividade": "2",
  "resp": "2",
  "circ": "2",
  "consc": "2",
  "spo2": "2"
}

Expected result

{
  "score": 10,
  "level": "low"
}

Actual result

{
  "score": 10
}

Case 2

reference-002

Inputs

Motor activity: Moves all 4 limbs
Breathing: Breathes deeply and coughs
Circulation (blood pressure relative to preanesthetic baseline): Variation ≤ 20%
Consciousness: Fully awake
O₂ saturation: Needs O₂ to maintain > 90%

{
  "atividade": "2",
  "resp": "2",
  "circ": "2",
  "consc": "2",
  "spo2": "1"
}

Expected result

{
  "score": 9,
  "level": "low"
}

Actual result

{
  "score": 9
}

Case 3

reference-003

Inputs

Motor activity: Moves all 4 limbs
Breathing: Dyspnea or limited breathing
Circulation (blood pressure relative to preanesthetic baseline): Variation ≤ 20%
Consciousness: Awakens to voice
O₂ saturation: Needs O₂ to maintain > 90%

{
  "atividade": "2",
  "resp": "1",
  "circ": "2",
  "consc": "1",
  "spo2": "1"
}

Expected result

{
  "score": 7,
  "level": "high"
}

Actual result

{
  "score": 7
}

Code and reproducibility

This tool’s code on GitHub

Download code and tests

Sources, version and reproduction instructions

README

Local installation

Code license: Apache-2.0

Guidelines and conditions

This repository’s license applies to the code. Third-party instruments, questionnaires, data and models remain subject to their owners’ conditions.

The code tests are technical checks. Clinical approval and professional translation review are recorded separately.

Relationship with cancer research

General context — relationship to be defined

A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.