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Clinical features and outcomes of severe, very severe, and extreme hypertriglyceridemia in a regional health service.
Journal of Clinical Lipidology 2018 July
BACKGROUND: Comprehensive data on severe hypertriglyceridemia (HTG) in the general population setting are limited and of importance due to the increase in metabolic risk factors and novel therapies under development.
OBJECTIVE: To investigate contributing causes and outcomes of severe to extreme HTG.
METHODS: Regional database retrospectively analyzed for subjects with severe HTG. Adverse outcomes were investigated in correlation to HTG severity, with follow-up initiating at first documentation of HTG > 1000 mg/dL.
RESULTS: A total of 3091 subjects with severe (peak triglycerides 1000-1999 mg/dL; n = 2590), very severe (2000-2999 mg/dL; n = 369), and extreme (≥3000 mg/dL; n = 132) HTG were identified. Mean age was 48 ± 12 years; 73% males. Obesity (48%) and diabetes (62%) were main contributing factors. During follow-up (median 101 months), 4.7% subjects had pancreatitis, 4.7% myocardial infarction, and 6% stroke. Compared with severe HTG, the multivariate-adjusted hazard ratio for pancreatitis was 3.22 (95% confidence interval 2.21-4.70) for individuals with very severe HTG and 5.55 (3.53-8.71) for those with extreme HTG, P < .0001. In contrast, the extent of HTG severity at these levels was not associated with worse cardiovascular outcomes or death. Most subjects (81%) achieved triglyceride levels <500 mg/dL, associated with lower risk for developing pancreatitis but not myocardial infarction or stroke.
CONCLUSIONS: Severity of HTG is closely related to cardiometabolic conditions, with a stepwise increase in the risk for pancreatitis, particularly if not attaining reduced triglyceride levels during the follow-up. In contrast, whereas mild-to-moderate HTG is a known established cardiovascular risk factor, very severe and extreme HTG may not further increase the risk for myocardial infarction, stroke, or mortality.
OBJECTIVE: To investigate contributing causes and outcomes of severe to extreme HTG.
METHODS: Regional database retrospectively analyzed for subjects with severe HTG. Adverse outcomes were investigated in correlation to HTG severity, with follow-up initiating at first documentation of HTG > 1000 mg/dL.
RESULTS: A total of 3091 subjects with severe (peak triglycerides 1000-1999 mg/dL; n = 2590), very severe (2000-2999 mg/dL; n = 369), and extreme (≥3000 mg/dL; n = 132) HTG were identified. Mean age was 48 ± 12 years; 73% males. Obesity (48%) and diabetes (62%) were main contributing factors. During follow-up (median 101 months), 4.7% subjects had pancreatitis, 4.7% myocardial infarction, and 6% stroke. Compared with severe HTG, the multivariate-adjusted hazard ratio for pancreatitis was 3.22 (95% confidence interval 2.21-4.70) for individuals with very severe HTG and 5.55 (3.53-8.71) for those with extreme HTG, P < .0001. In contrast, the extent of HTG severity at these levels was not associated with worse cardiovascular outcomes or death. Most subjects (81%) achieved triglyceride levels <500 mg/dL, associated with lower risk for developing pancreatitis but not myocardial infarction or stroke.
CONCLUSIONS: Severity of HTG is closely related to cardiometabolic conditions, with a stepwise increase in the risk for pancreatitis, particularly if not attaining reduced triglyceride levels during the follow-up. In contrast, whereas mild-to-moderate HTG is a known established cardiovascular risk factor, very severe and extreme HTG may not further increase the risk for myocardial infarction, stroke, or mortality.
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