Lipids & metabolic liver disease

Insulin resistance, coronary artery lesion complexity and adverse cardiovascular outcomes in patients with acute coronary syndrome

Cardiovasc DiabetolPublished Cohort study

Authors' conclusion

Elevated baseline TyG index and SYNTAX score were associated with a higher risk of MACEs in ACS. Furthermore, the SYNTAX score partially mediated the relationship between the TyG index and adverse cardiovascular outcomes.

Study context

Population
Patients with acute coronary syndrome (ACS) who underwent percutaneous coronary intervention (PCI); Insulin resistance (IR) assessed by triglyceride-glucose (TyG) index, lesion complexity by SYNTAX score
Participants
986 patients
Exposure
Association of TyG index and SYNTAX score with MACE
Outcome
MACE
Follow-up
Median 30.72 months
Methodological detailsmediation analysis, adjusted Cox regression, restricted cubic splines
  • Mediation analysis
  • Adjusted Cox regression
  • Restricted cubic splines

Main finding

As reported in the abstract

MACE cases
167
All-cause deaths
66 (6.69%)
Nonfatal MI
26 (2.64%)
Unplanned revascularizations
99 (10.04%)
Positive dose-response of TyG index with MACE on restricted cubic splines (RCS) (non-linear)
P = 0.119
Positive dose-response of SYNTAX score with MACE on RCS (non-linear)
P = 0.004

Observational data: associations, not effects.

Further findings

Mediation by SYNTAX score of TyG index–MACE association

Proportion mediated in different adjusted models
25.03%, 18.00%, 14.93%, and 11.53%

Mediation by SYNTAX score with unplanned revascularization as endpoint

Similar mediating effects observed

Original publication

Insulin resistance, coronary artery lesion complexity and adverse cardiovascular outcomes in patients with acute coronary syndrome. Cardiovasc Diabetol. Published 16 May 2024. doi:10.1186/s12933-024-02276-1

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