emr.medbridge.sg/pre-op/assessment
MedBridge EMR
Pre-Op Assessment
Records
Consents
ClinicalOps Agent · Pre-Operative Module
Cross-Provider Pre-Op Assessment
Patient data retrieved from three providers, joined inside a hardware-attested enclave. The agent never holds raw PHI.
Read-only · PHI
3 providers
SGP data residency
PDPA compliant
SG Hospital A
HospitalA
Allergies & reactions
Surgical history
Anaesthetic history
Idle
SG Hospital B
HospitalB
MRI knee · 2024
X-ray bilateral
Radiology report
Idle
Dr. Chen's Family Clinic
GP
Current medications
Vitals & blood panel
Chronic conditions
Idle
◆ Patient fields shown as placeholder references. Real values are never held by the agent or the EMR client.
Sending to T3 Network
Three encrypted payloads are being joined inside a hardware-attested TEE. The agent sees nothing during this step. No provider sees another's data.
Payload · HospitalA (allergies, surgical Hx)
ENCRYPTED
Payload · HospitalB (imaging, radiology)
ENCRYPTED
Payload · GP Clinic (medications, vitals)
ENCRYPTED
4 / 10
Moderate Risk
Pre-Operative Assessment · Ahmad bin Khalid
PHI not returned to agent
Flags requiring attention
⚠ Critical · Drug Interaction
Warfarin (20mg daily, current) × planned GA / Propofol anaesthetic protocol — elevated bleeding risk.
Haematology consult and INR check recommended before proceeding.
◇ Caution · Prior Procedure
Prior arthroscopy same knee (2019). Inform surgical team: scar tissue risk.
Cleared
✓
No known drug allergies to anaesthetic agents
✓
Cardiac clearance within normal range (ECG Dec 2024)
✓
Imaging confirms surgical candidacy (MRI Feb 2025)
✓
Assessment Sealed
Pre-operative assessment complete and sent to the surgical team. Audit trail immutably recorded on T3 Network. No PHI was exposed to the agent at any point.
audit_root
0xf3a2e917c0814d28b99c3a1ff6c...c18d
merkle_block
#4,829,114 · T3 Network SGP
status
Ready for surgeon review
Inside T3 Network
Three encrypted provider streams, joined inside a hardware-attested TEE. No provider sees another's contribution. The clinical agent sees only the output receipt.
Intel TDX · SGP · Attested
Execution Request
contract: "health.preop.assess"
agent: did:t3:...clinops-001
patient: {patient.mrn}
providers: ["sgha","sghb","gp.clinic"]
vc_ref: "vc:preop:sgha:001"
scope: "read.clinical"
TEE Enclave
attested
Consent verified
3/3 providers covered
PHI joined in-enclave
fields_joined: 11
no plaintext egress
no plaintext egress
Risk computed
risk_score: 4
flags: 2 (1 critical)
flags: 2 (1 critical)
Contraindication
warfarin × anaesthetic
severity: "critical"
severity: "critical"
Merkle audit entry
block #4,829,114
0xf3a2e917c081...c18d
Receipt to agent
only: risk_score, flags, audit_root
T3N · TEE-attested confidential compute · SGP data residency
providers cannot see each other's data — agent sees only the receipt