Low HDL Cholesterol (Hypoalphalipoproteinemia) Follow-up
- Author: Vibhuti N Singh, MD, MPH, FACC, FSCAI; Chief Editor: George T Griffing, MD more...
Further Inpatient Care
- Generally, patients with hypoalphalipoproteinemia (HA) are discovered during routine lipid profile testing. Such patients are ambulatory and do not usually require hospitalization or inpatient care.
- Inpatient care is usually required for complications arising from accelerated atherosclerosis.
- In patients with secondary causes of HA, inpatient care may become necessary based on the primary pathology.
Further Outpatient Care
- Provide outpatient care at regular intervals, especially clinical evaluation, lipid profile assessment, and follow-up evaluations for complications (such as coronary heart disease).
- Monitor patients frequently to ascertain the effectiveness of medical treatment and to determine whether complications are arising from drug therapy. For example, monitor liver function tests and eye function when treating patients with lipid-lowering agents.
Inpatient & Outpatient Medications
- Niacin or nicotinic acid
- Gemfibrozil (Lopid) or fenofibrate (Tricor)
- Statins
- Atorvastatin (Lipitor)
- Simvastatin (Zocor)
- Pravastatin (Pravachol)
Transfer
- Patients with hypoalphalipoproteinemia (HA) rarely require transfer, and no specific recommendations are available for this purpose. In patients who are admitted to a health care facility, transfer depends mainly on the underlying condition or on complications of HA or premature atherosclerosis, such as myocardial infarction, arrhythmia, or hypotension.
Deterrence/Prevention
- Familial or genetically inheritable forms of HA are not amenable to prevention. Genetic counseling and screening may be applicable in rare cases.
- Hypoalphalipoproteinemia resulting from secondary causes can frequently be managed by treating those causes. Examples include quitting smoking and initiating regular physical activity.
Complications
- Premature atherosclerosis
- Corneal opacification
Prognosis
- If hypoalphalipoproteinemia (HA) is diagnosed early and monitored closely, the prognosis for patients with HA is generally reasonably good. The risk derives from the development of complications.
Patient Education
- Pursue aggressive dietary modification.
- Discuss medications and their potential adverse effects, and monitor for adverse effects.
- For excellent patient education resources, visit eMedicine's Cholesterol Center and Statins Center. Also, see eMedicine's patient education articles High Cholesterol, Your Cholesterol Level, Lifestyle Cholesterol Management, and Cholesterol-Lowering Medications.
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| Variant | Molecular Defect | Inheritance | Metabolic Defect | Lipoprotein Abnormality | Clinical Features | Premature Atherosclerosis |
| Familial apo A-I | Apo deficiency | Autosomal codominant | Absent apo A-1 biosynthesis | HDL < 5 mg/dL; TGs normal | Planar xanthomas, corneal opacities | Yes |
| Familial apo A-I structural mutations | Abnormal apo A-I | Autosomal dominant | Rapid apo A-1 catabolism | HDL 15-30 mg/dL; TGs increased | Often none; sometimes corneal opacities | No |
| Familial LCAT | LCAT deficiency (complete) | Autosomal recessive | Rapid HDL catabolism | HDL < 10 mg/dL; TGs increased | Corneal opacities, anemia, proteinuria, renal insufficiency | No |
| Fish-eye disease | LCAT deficiency (partial) | Autosomal recessive | Rapid HDL catabolism | HDL < 10 mg/dL; TGs increased | Corneal opacities | No |
| Tangier disease | Unknown | Autosomal codominant | Very rapid HDL catabolism | HDL < 5 mg/dL; TGs usually increased | Corneal opacities, enlarged orange tonsils, hepatosplenomegaly, peripheral neuropathy | No to yes |
| Familial HA | Unknown | Autosomal dominant | Usually rapid HDL catabolism | HDL 15-35 mg/dL; TGs normal | Often none; sometimes corneal opacities | No to yes |

