The pre-gestational triglycerides and high-density lipoprotein cholesterol ratio is associated with adverse perinatal outcomes: A retrospective cohort analysis

Objective: To investigate associations between pre-gestational dyslipidemia, expressed as the ratio between triglycerides (TG) and high-density lipoprotein cholesterol (HDL), and adverse maternal and neonatal outcomes. Methods: A retrospective cohort analysis included women with TG and HDL measurements available up to 52 weeks before conception who delivered a singleton, non-anomalous infant. The study population was stratified according to a TG/HDL ratio cutoff of 3. Primary maternal outcomes included gestational diabetes or hypertensive disorders of pregnancy and neonatal outcomes after delivery before 37 weeks. Results: Among 5226 women included, 4446 (85.1%) had TG/HDL <3 and 780 (14.9%) ≥3. TG/HDL ratio ≥3 vs <3 was associated with higher rates of gestational diabetes (13.1% vs 5.2%, P<0.0001) and hypertensive disorders of pregnancy (5.3% vs 2.2%, P<0.0001). Larger babies (3229.7 ± 520.7 g vs 3181.7 ± 504.4 g, P=0.015) with higher birth weight percentile (59.0 ± 26.4 vs 55.1 ± 26.6, P<0.0001) and increased rates of large-for-gestational-age (14.5% vs 10.8%, P=0.007) and macrosomia (5.6% vs 3.9%, P=0.026) were found. In multivariate analysis, TG/HDL ≥3 remained an independent risk-factor for gestational diabetes (adjusted odds ratio [aOR] 1.56, 95% confidence interval [CI] 1.02–2.39) and pre-eclampsia (aOR 3.02, 95% CI 1.82–5.01). Conclusions: An increase in adverse pregnancy outcomes was reported, mainly gestational diabetes and pre-eclampsia, when TG/HDL ratio up to 1 year before pregnancy was ≥3.