Hemodynamics, fluids & transfusion
Brachial artery Doppler as a novel predictor of post-induction hypotension: a prospective observational study
Authors' conclusion
Among adult patients undergoing abdominal or pelvic surgery, dynamic changes in brachial artery Doppler indices, specifically a ΔPI greater than 21% and a ΔRI >12%, demonstrated a strong predictive value for PIH.
Study context
- Population
- ASA I adults (aged 20–60 years) undergoing abdominal or pelvic surgery under GA
- Participants
- 90 adults
- Exposure
- Brachial artery Doppler indices (baseline pulsatility index (PI), ΔPI, ΔRI, ΔM) for predicting post-induction hypotension
- Outcome
- Prediction of post-induction hypotension (PIH: >20% decrease in MAP within 10 min of induction)
- Follow-up
- Within 10 min of induction
Main finding
As reported in the abstract
Prediction of PIH
| Group | AUC | Optimal cutoff | Optimal threshold | Sensitivity | Specificity |
|---|---|---|---|---|---|
| Baseline PI | 0.86 | >5.22 | |||
| ΔPI | 0.93 | 13.6% | |||
| ΔRI | 0.83 | 12% | |||
| ΔM | 0.92 | 100% | 84% |
AUC
Baseline PI0.86
ΔPI0.93
ΔRI0.83
ΔM0.92
Optimal cutoff
Baseline PI>5.22
ΔPI— not stated in the abstract
ΔRI— not stated in the abstract
ΔM— not stated in the abstract
Optimal threshold
Baseline PI— not stated in the abstract
ΔPI13.6%
ΔRI12%
ΔM— not stated in the abstract
Sensitivity
Baseline PI— not stated in the abstract
ΔPI— not stated in the abstract
ΔRI— not stated in the abstract
ΔM100%
Specificity
Baseline PI— not stated in the abstract
ΔPI— not stated in the abstract
ΔRI— not stated in the abstract
ΔM84%
Observational data: associations, not effects.
Further findings
Incidence of post-induction hypotension (PIH)
- PIH occurred in 39% of patients
PI and resistive index (RI) after induction
- PI and RI decreased after induction, with significantly greater reductions in hypotensive patients
Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.
Original publication
Brachial artery Doppler as a novel predictor of post-induction hypotension: a prospective observational study. Anaesth Crit Care Pain Med. Published 12 November 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →