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Purpose: Antihypertensive drugs are prescribed to patients with chronic kidney disease (CKD) for their cardioprotective and renoprotective effects. Nationally representative information on the use of antihypertensive drugs among CKD patients is limited. The purpose of this study was to assess the utilization patterns of antihypertensive drugs among the CKD population (stages I-IV) in the United States. Methods: We conducted a retrospective crosssectional analysis of the National Health and Nutrition Examination Survey (NHANES) panels from 2005-2006, 2007-2008, and 2009-2010. The estimated glomerular filtration rate was calculated and kidney damage was assessed to identify participants with CKD. The demographic and clinical characteristics of the participants with CKD were reported, as were the antihypertensive drugs they used. Findings: A total weighted sample of 116,231,361 participants representative of the CKD population in the United States (stages I-IV) was identified. Less than one half of the participants with CKD in the NHANES were using antihypertensive drugs. β- blockers were the most commonly used and angiotensin II receptor blockers were the least used antihypertensive agents among participants with CKD. Age (Z70 years), awareness of hypertension or diabetes, and higher stage of CKD were associated with an increased likelihood of antihypertensive drug use among participants with CKD. Implications: The results of our analyses suggest that antihypertensive drugs are underused in the CKD population, and the use of preferred agents (ie, angiotensin-converting enzyme inhibitors, angiotensin II receptor blockers) is low. Efforts should be directed toward emphasizing the importance of using antihypertensive drugs in the CKD population. [ABSTRACT FROM AUTHOR]