[The effect of prolonged acenocoumarol therapy on bone density]

Area of Science:

• Cardiology
• Endocrinology
• Gerontology

Background:

• Coumarin anticoagulants are widely prescribed for cardiac conditions.
• Long-term use of anticoagulants may impact bone metabolism.
• Bone mineral density is a key indicator of bone health.

Purpose of the Study:

• To investigate the effect of chronic coumarin (acenocoumarol) treatment on bone mineral density.
• To compare bone mineral density in cardiac patients on long-term coumarin therapy versus controls.
• To assess potential correlations between coumarin treatment duration/dosage and bone mineral density.

Main Methods:

• Bone mineral density was measured using dual-photon densitometry (Lunar DPXL).
• A cohort of 45 cardiac patients on acenocoumarol for at least 2 years was compared to 45 matched controls.
• Measurements focused on lumbar spine (L2-L4) and peripheral sites (ultradistal radius and ulna).

Main Results:

• Lumbar spine bone mineral density (L2-L4) was significantly lower in the coumarin-treated group compared to controls (p < 0.05).
• No significant differences in bone mineral density were observed in the ultradistal ulnar and radial regions.
• No correlation was found between bone mineral density and the duration or dose of coumarin treatment.

Conclusions:

• Chronic coumarin treatment may be associated with reduced bone mineral density in the lumbar spine.
• Regular bone densitometry screening is advisable for patients undergoing long-term coumarin therapy.
• Further research is needed to elucidate the mechanisms underlying coumarin's effect on bone metabolism.