Session Type: ACR Poster Session C
Session Time: 9:00AM-11:00AM
Arthrocentesis (AC) is a common and simple yet invasive procedure with potential of serious complications. There are no studies evaluating how often this procedure is utilized among hospitalized patients and if the outcomes are different when the procedure occurs. We explored the same using a large inpatient US database.
Using the largest inpatient National Inpatient Sample (NIS) data from 2004-2013, we identified adults with AC related discharges based on ICD-9 procedure codes. We calculated the proportion/rate of AC by sex, racial groups and arthritis categories; and outcomes (mean LOS and mortality). Analysis was done using STATA and Joinpoint Regression software. SVY commands were used to derive national estimation. Annual Percentage Changes (APC) were calculated to check the significance of changing trend (p<0.05) unless specified.
Our study included 686,538 discharges with AC as a procedure during hospitalization from 2004-2013. There was an overall increasing trend in total number (APC=2.26) and rate of arthrocentesis (APC=2.73) (Fig-1). However, the use of AC showed decreasing trends for crystal disease, OA, RA, infective and hemarthrotic/traumatic arthropathy (Fig-2). Interestingly, LOS among discharges with AC had decreasing trend compared to those without, while mortality rate remained same throughout (Fig-3). All sex and race categories showed increasing trend of AC utilization during inpatient stays.
There was an increasing trend of utilizing arthrocentesis among hospitalized patients from 2004-2013 with a concurrent decreasing trend of LOS and stable mortality rate among those patients. This highlights the improvement in quality of this procedure performed in the hospitals of US. The reducing trends among etiologic categories such as crystal disease, RA, OA and infective arthritis might indicate better outpatient management of these patients with improved disease control and thus requiring less invasive procedures like AC.
Figure-1:Trend of total and rate of discharges with arthrocentesis -2004-2013
Fig-2:Trend of proportion of arthrocentesis by arthritic etiology
Fig-3:Trend of LOS and mortality among discharges with arthrocentesis
To cite this abstract in AMA style:Poudel D, Dhital R, Basnet S, Ghimire S, Shrestha P, Paudel P, Khanal R, Karmacharya P. Trend of Arthrocentesis Utilization Among Inpatients over 10 Years – Data from National Inpatient Sample [abstract]. Arthritis Rheumatol. 2017; 69 (suppl 10). https://acrabstracts.org/abstract/trend-of-arthrocentesis-utilization-among-inpatients-over-10-years-data-from-national-inpatient-sample/. Accessed May 31, 2020.
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