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  • Remnant Cholesterol...

Remnant Cholesterol Tied to Higher Risks of AKI and CV Events in Diabetes Patients After CABG, Study Finds

Written By : Medha Baranwal |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2025-01-20T08:00:57+05:30  |  Updated On 20 Jan 2025 8:01 AM IST
Remnant Cholesterol Tied to Higher Risks of AKI and CV Events in Diabetes Patients After CABG, Study Finds
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China: A recent study published in Cardiovascular Diabetology identified elevated remnant cholesterol as a significant factor contributing to poor outcomes in patients with diabetes or prediabetes following CABG.

"In the short term, higher remnant-C levels were associated with an increased risk of stage 2/3 acute kidney injury. Over the long term, each 1-standard deviation rise in remnant-C corresponded to a 6.6% greater risk of major adverse cardiovascular events, a 7.1% higher risk of all-cause mortality, and an 11.2% elevated risk of myocardial infarction," the researchers reported.

Remnant cholesterol (remnant-C) is a known contributor to atherosclerotic cardiovascular disease (ASCVD), particularly in individuals with impaired glucose metabolism, who face a heightened residual risk even after undergoing coronary artery bypass grafting (CABG). Despite this, the specific role of remnant-C in this high-risk population has not been thoroughly explored. To address this gap, Zhe Zheng, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China, and colleagues aimed to evaluate the association between remnant-C levels and prognosis in a large prospective cohort of patients with impaired glucose metabolism and ASCVD following CABG.

For this purpose, the researchers consecutively enrolled adult patients with prediabetes or diabetes undergoing isolated CABG into a longitudinal cohort between 2013 and 2018. They assessed the impact of remnant-C on both short-term and long-term outcomes following CABG. Short-term outcomes included major perioperative complications, while long-term outcomes focused on major adverse cardiovascular and cerebrovascular events (MACCEs). Remnant-C levels were analyzed as both categorical and continuous variables. The researchers employed logistic regression, Cox regression, and restricted cubic spline analyses with multivariate adjustments.

The following were the key findings of the study:

  • Patients with elevated remnant-C had a higher incidence of acute kidney injury (AKI) stage 2/3 compared to those with low remnant-C (3.2% versus 2.4%; OR: 1.404).
  • Each 1-standard deviation increase in remnant-C was associated with a 16.6% higher risk of AKI stage 2/3 (OR: 1.160).
  • In long-term outcomes, after a median follow-up of 3.2 years, 9.3% of patients (1,251) experienced major adverse cardiovascular and cerebrovascular events (MACCEs).
  • Each 1-SD increase in remnant-C was linked to a 6.6% higher risk of MACCEs (HR: 1.066), a 7.1% higher risk of all-cause mortality (HR: 1.071), and an 11.2% higher risk of myocardial infarction (HR: 1.112).
  • These associations remained consistent when remnant-C was treated as a categorical variable.
  • The relationship between remnant-C and MACCEs was independent of LDL-C levels; higher remnant-C levels were associated with increased MACCE risk regardless of whether LDL-C was ≤ 2.6 mmol/L or > 2.6 mmol/L.
  • Subgroup analysis showed that the risk was more pronounced in insulin-treated patients.

"The findings showed that remnant-C is linked to an increased risk of acute kidney injury and major adverse cardiovascular and cerebrovascular events in patients with diabetes or prediabetes undergoing CABG. The risk of MACCEs associated with remnant-C is independent of LDL-C levels and is more pronounced in patients who are treated with insulin," the researchers concluded.

Reference:

Li, Z., Yu, C., Zhang, H. et al. Impact of remnant cholesterol on short-term and long-term prognosis in patients with prediabetes or diabetes undergoing coronary artery bypass grafting: a large-scale cohort study. Cardiovasc Diabetol 24, 8 (2025). https://doi.org/10.1186/s12933-024-02537-z


Cardiovascular Diabetologyprediabetesdiabetescoronary artery bypass graftingremnant cholesterolacute kidney injury
Source : Cardiovascular Diabetology
Medha Baranwal
Medha Baranwal

    MSc. Biotechnology

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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