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COMPARATIVE STUDY
JOURNAL ARTICLE
OBSERVATIONAL STUDY
Implications of the 2013 ACC/AHA cholesterol guidelines on contemporary clinical practice for patients with atherosclerotic coronary and peripheral arterial disease.
Indian Heart Journal 2017 July
BACKGROUND: Cholesterol management guidelines from the American College of Cardiology/American Heart Association (ACC/AHA-2013) recommend fixed statin dosing (dose depends on age ≤ or >75years) compared to the earlier adult treatment panel III (ATPIII) guidelines which recommended specific low-density lipoprotein-cholesterol (LDL-C) targets. Clinical implications of this recommendation are not known.
METHODS: We retrospectively compared cholesterol levels and statin utilization across cohorts with coronary artery disease (CAD) (n=9563), peripheral arterial disease (PAD) (n=596) and CAD+PAD (n=975) by applying both guidelines. The percentage of patients who achieved guideline-specific targets using 2013 ACC/AHA (use of moderate/high intensity statins) or ATPIII guidelines (LDL-C<100mg/dl) was compared between all groups.
RESULTS: Using both guidelines, the PAD only group demonstrated lower utilization and lower statin doses than the CAD or CAD+PAD groups. When applying the ACC/AHA guidelines, more patients in the CAD only group (age ≤75 years) were considered at goal as compared to the ATPIII guidelines (92.2% vs. 75%), primarily driven by the group placed on moderate/high intensity statins but had an LDL-C level >100mg/dl.
CONCLUSIONS: Application of the ACC/AHA guidelines results in a higher percentage of patients considered to be 'at goal' when compared to the ATP III guidelines without changes in clinical practice. This is due to patients ≤75 years old on adequate statin doses but still have LDL-C levels >100mg/dl, thereby raising concerns that physicians may not pursue alternate LDL reduction strategies since they are now considered at goal despite LDL-C >100mg/dl. Lipid management of PAD patients remains sub-optimal as compared to CAD and CAD+PAD.
METHODS: We retrospectively compared cholesterol levels and statin utilization across cohorts with coronary artery disease (CAD) (n=9563), peripheral arterial disease (PAD) (n=596) and CAD+PAD (n=975) by applying both guidelines. The percentage of patients who achieved guideline-specific targets using 2013 ACC/AHA (use of moderate/high intensity statins) or ATPIII guidelines (LDL-C<100mg/dl) was compared between all groups.
RESULTS: Using both guidelines, the PAD only group demonstrated lower utilization and lower statin doses than the CAD or CAD+PAD groups. When applying the ACC/AHA guidelines, more patients in the CAD only group (age ≤75 years) were considered at goal as compared to the ATPIII guidelines (92.2% vs. 75%), primarily driven by the group placed on moderate/high intensity statins but had an LDL-C level >100mg/dl.
CONCLUSIONS: Application of the ACC/AHA guidelines results in a higher percentage of patients considered to be 'at goal' when compared to the ATP III guidelines without changes in clinical practice. This is due to patients ≤75 years old on adequate statin doses but still have LDL-C levels >100mg/dl, thereby raising concerns that physicians may not pursue alternate LDL reduction strategies since they are now considered at goal despite LDL-C >100mg/dl. Lipid management of PAD patients remains sub-optimal as compared to CAD and CAD+PAD.
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