Predictive performance of Shock Index for postpartum hemorrhage during cesarean delivery
Authors' conclusion
Unlike in vaginal delivery, the prognostic accuracy of SI for PPH detection in cesarean delivery was low.
Study context
- Population
- Women undergoing cesarean delivery under spinal anaesthesia at term, 2018–2021
- Participants
- 331 women
- Comparison
- Shock Index (SI) vs Other vital signs
- Outcome
- Predictive performance (AUROC) for PPH (total blood loss ≥1000 mL)
Methodological detailssingle-centre
- Single-centre
Performance
As reported in the abstract
Detection of PPH
| Test or model | AUROC | AUROCs |
|---|---|---|
| SI | 0.54 (95% CI 0.47 to 0.61) | — not stated in the abstract |
| Other vital signs | — not stated in the abstract | 0.53-0.56 |
AUROC
SI0.54 (95% CI 0.47 to 0.61)
Other vital signs— not stated in the abstract
AUROCs
SI— not stated in the abstract
Other vital signs0.53-0.56
— not stated in the abstract
Further findings
PPH incidence
- Women diagnosed with PPH
- 91 (27.5%)
Correlation between SI and total blood loss
- No correlation (rs)
- 0.02
SI pattern during cesarean delivery · 10-15 min after delivery
- Mean SI peak
- 0.84 and 0.90
- Mean SI afterwards, similar to entering operating room
- 0.72 and 0.77
- Ranges across total blood loss strata
Original publication
Predictive performance of Shock Index for postpartum hemorrhage during cesarean delivery. Int J Obstet Anesth. Published 20 November 2023. doi:10.
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