Drug Burden Index and physical function in older Australian men

被引:119
|
作者
Gnjidic, Danijela [1 ,2 ,3 ]
Cumming, Robert G. [4 ]
Le Couteur, David G. [4 ]
Handelsman, David J. [5 ]
Naganathan, Vasi [4 ]
Abernethy, Darrell R. [6 ]
Hilmer, Sarah N. [1 ,2 ,3 ]
机构
[1] Royal N Shore Hosp, Dept Clin Pharmacol, Sydney, NSW, Australia
[2] Royal N Shore Hosp, Dept Aged Care, Sydney, NSW, Australia
[3] Univ Sydney, Fac Med, Sydney, NSW 2006, Australia
[4] Concord RG Hosp, Ctr Educ & Res Ageing, Sydney, NSW, Australia
[5] Univ Sydney, Anzac Res Inst, Sydney, NSW 2006, Australia
[6] US Pharmacopeia, Washington, DC USA
基金
英国医学研究理事会;
关键词
elderly; function; medications; SERUM ANTICHOLINERGIC ACTIVITY; INAPPROPRIATE MEDICATION USE; LOWER-EXTREMITY FUNCTION; COGNITIVE PERFORMANCE; SEX-DIFFERENCES; DISABILITY; PEOPLE; PREDICTOR; ADULTS; AGE;
D O I
10.1111/j.1365-2125.2009.03411.x
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
center dot Inappropriate medication use is common among the elderly. center dot Use of medications with anticholinergic and sedative properties is associated with functional impairments in older people. center dot Exposure to anticholinergic and sedative medications, measured with Drug Burden Index that includes the principles of dose-response and maximal effect, was associated with impairment in physical and cognitive function in two studies of older people in the USA. WHAT THIS STUDY ADDS center dot We evaluated Drug Burden Index in an Australian population of community-dwelling older men, The Concord Health and Ageing in Men Project that enrolled a random sample of community-dwelling men aged >= 70 years living in Sydney, Australia. center dot In this population, increasing Drug Burden Index was associated with objective impairments of physical performance and functional status. center dot The Drug Burden Index has broad applicability regardless of healthcare system, prescribing practices, gender or country. AIMS This study evaluated the associations of physical performance and functional status measures with the Drug Burden Index in older Australian men. The Drug Burden Index is a measure of total exposure to anticholinergic and sedative medications that incorporates the principles of dose-response and maximal effect. METHODS A cross-sectional survey was performed on community-dwelling older men enrolled in The Concord Health and Ageing in Men Project, Sydney, Australia. Outcomes included chair stands, walking speed over 6 m, 20-cm narrow walk speed, balance, grip strength and Instrumental Activities of Daily Living score (IADLs). RESULTS The study population consisted of 1705 men (age 76.9 +/- 5.5 years). Of the 1527 (90%) participants who reported taking medications, 21% were exposed to anticholinergic and 13% to sedative drugs. The average Drug Burden Index in the study population was 0.18 +/- 0.35. After adjusting for confounders (sociodemographics, comorbidities, cognitive impairment, depression), Drug Burden Index was associated with slower walking speed (P < 0.05), slower narrow walk speed (P < 0.05), balance difficulty (P < 0.01), grip weakness (P < 0.01) and poorer performance on IADLs (P < 0.05). Associations with physical performance and function were stronger for the sedative than for the anticholinergic component of the Drug Burden Index. CONCLUSIONS Higher Drug Burden Index is associated with poorer physical performance and functional status in community-dwelling older Australian men. The Drug Burden Index has broad applicability as a tool for assessing the impact of medications on functions that determine independence in older people.
引用
收藏
页码:97 / 105
页数:9
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