Cardiothoracic & vascular anesthesia

Angiopoietin-2 is associated with capillary leak and predicts complications after cardiac surgery

Ann Intensive CarePublished Prospective observational cohort study

Authors' conclusion

Capillary leak and subsequent edema formation are relevant problems after cardiac surgery. Levels of angiopoietin-2 in combination with extracellular water show promising potential to predict postoperative complications after cardiac surgery.

Study context

Population
Cardiac surgery patients at a tertiary academic medical center
Participants
405 patients
Outcome
Association of angiopoietin-2 with extracellular water and common postoperative complications
Methodological detailsmultidisciplinary, single-centre
  • Multidisciplinary
  • Single-centre

Main finding

As reported in the abstract

Extracellular water increased postoperatively, 20 ± 6 preoperatively to 29 ± 7L on POD 2
P < 0.001
Angiopoietin-2 rose concomitantly, correlation with extracellular water by time points (r)
0.959
Each 1 ng/mL increase in angiopoietin-2 associated with increase in extracellular water (L), adjusted for risk factors of edema
0.24
Angiopoietin-2 and AKI (OR 1.095, 95% CI 1.032, 1.169)
P = 0.004

Observational data: associations, not effects.

Further findings

Inflammatory (IL-6, IL-8, CRP) and endothelial biomarkers (VE-Cadherin, syndecan-1, ICAM-1)

Increased, suggestive of capillary leak

Machine learning prediction of postoperative complications

Complications predicted when capillary leak added to standard risk factors

Original publication

Angiopoietin-2 is associated with capillary leak and predicts complications after cardiac surgery. Ann Intensive Care. Published 8 August 2023. doi:10.1186/s13613-023-01165-2

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