PEAR: an AI chatbot to explain anaesthesia risks and consent.

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adults scheduled for elective surgery at SingHealth hospitals are randomly assigned to use PEAR before meeting their anaesthetist or to receive the standard verbal consent process. PEAR is a conversational, multilingual interface that presents institution-aligned anaesthesia risk information and allows interactive questions. After the consent process, patients complete a short quiz to measure understanding, a satisfaction survey, and an anxiety scale while clinicians record time spent and perceived workload. All participants still meet the anaesthetist in person, and data are anonymised and stored securely for comparison between groups.

Why it matters

Who can join: the full rules

Inclusion Criteria:

\- Adults (≥21 years old) undergoing elective surgery requiring anaesthesia

Classified as ASA Physical Status I to III

* Able to provide informed consent
* Able to communicate effectively in English, Chinese (Mandarin), Malay, or Tamil
* Willing and able to complete questionnaires and interact with the PEAR chatbot (intervention arm)

Exclusion Criteria:

* ASA Physical Status IV or above
* Cognitive impairment or psychiatric conditions that may limit comprehension or communication
* Non-literate patients or those unable to understand English, Chinese, Malay, or Tamil
* Emergency surgery cases
* Prior participation in the study (to prevent bias)

Where it's running

• Singapore General Hospital
  Singapore, Singapore, Singapore Recruiting
• Singapore General Hospital
  Singapore, Singapore, Singapore Not yet recruiting

Study contacts

• Study coordinator: Yuhe Ke, MMED (ANES)
• Email: yuhe.ke36@gmail.com
• Phone: +6581022852

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.