About this simulator

This tool was built with AI assistance as an educational aid for teaching TEG interpretation. It is a simulation only — it is not connected to any patient data, is not a certified medical device, and must not be used for clinical decision-making.

Trace shapes, thresholds and suggested actions are modelled on the local obstetric guideline, the "TEG 6 Protocol for use in PPH".

Reference ranges and default values shown here are normalised to an obstetric population — they will differ from ranges quoted for a general adult TEG population.

What the channels represent

CK — Citrated Kaolin. The standard trace: kaolin activates clotting via the intrinsic pathway, giving the overall picture of clot initiation, strength and breakdown.

CRT — Citrated Rapid TEG. Tissue factor is added to activate clotting immediately, giving a fast ACT/R time for early triage. Because clotting is accelerated, it's less reliable for assessing fibrinolysis.

CKH — Citrated Kaolin + Heparinase. The same as CK, but heparinase neutralises any heparin present. Comparing CK R to CKH R identifies a heparin effect.

CFF — Citrated Functional Fibrinogen. A platelet inhibitor is added so the resulting MA reflects the fibrinogen contribution to clot strength alone, independent of platelet function.

CUH Obstetric TEG Simulator

t = 0.0 min Speed 150×

Adjust parameters

Link graphs Advanced

🔗 Linked — adjusting this updates the other linked channels too.

⚠ Disabling this may allow you to create tracings that can't exist physiologically.

Channels

Scenario presets (illustrative, generic values — not real patient data)

Channel (click to show/hide)	TEG-ACT (sec)	R (min)	K (min)	ANGLE (deg)	A10 (mm)	MA (mm)	LY30 (%)

References
Wells M, Raja M, Rahman S. Point-of-care viscoelastic testing. BJA Education 2022; 22(11): 416–423. doi: 10.1016/j.bjae.2022.07.003 (incl. corrigendum, BJA Education 2023; 23(3): 118–119).
Algorithm thresholds adapted from the local "TEG 6 Protocol for use in PPH" (v1.4) major obstetric haemorrhage transfusion algorithm.

This simulator is a stylised teaching aid for illustrating TEG trace shapes and an associated transfusion algorithm. It does not replicate manufacturer device firmware and must not be used for clinical decision-making.