Rheumatoid Arthritis is Associated With Higher Ninety‐Day Hospital Readmission Rates Compared to Osteoarthritis After Hip or Knee Arthroplasty: A Cohort Study

Oct 11, 2014Arthritis care & research

Rheumatoid arthritis linked to higher 90-day hospital readmission than osteoarthritis after hip or knee replacement

AI simplified

GLP-1 Therapies on OpenScience ↗PubMed ↗DOI ↗

Abstract

Among 34,311 patients, 8.5% of those with rheumatoid arthritis (RA) were readmitted within 90 days after total hip or knee replacement, compared to 6.7% of those with osteoarthritis (OA).

Patients with RA had a higher crude 90-day readmission rate than those with OA.
Adjusted odds of 90-day readmission increased for RA patients from 0.89 in 2009 to 1.74 in 2011.
The most common reasons for readmission were joint prosthesis infection and septicemia for RA patients, while OA patients mostly experienced joint prosthesis infection and other postoperative infections.
Demographic differences included a higher proportion of women and younger mean age among RA patients compared to OA patients.

AI simplified

OBJECTIVE: To examine whether an underlying diagnosis of rheumatoid arthritis (RA) or osteoarthritis (OA) impacts the 90-day readmission rates after total hip arthroplasty (THA) or total knee arthroplasty (TKA).

METHODS: We analyzed prospectively collected data from an integrated health care system, Total Joint Replacement Registry, of adults with RA or OA undergoing unilateral primary THA or TKA during 2009-2011. Adjusted logistic regression models for 90-day readmission were fit. Odds ratios with 95% confidence intervals (95% CIs) were calculated. Study year was an effect modifier for the outcome; therefore separate analyses were conducted for each of the 3 study years.

RESULTS: Of the 34,311 patients, 496 had RA and 33,815 had OA. Comparisons of RA and OA patients, respectively, were 73% and 61% women, 45% and 70% white, and patients had a mean age of 61 versus 67 years (P < 0.001). Crude 90-day readmission rates for RA and OA were 8.5% and 6.7%, respectively. The adjusted odds of 90-day readmission increased from year to year for RA compared to OA patients, from 0.89 (95% CI 0.46-1.71) in 2009 to 1.34 (95% CI 0.69-2.61) in 2010, and to 1.74 (95% CI 1.16-2.60) in 2011. The 2 most common readmission reasons were joint prosthesis infection (10.2%) and septicemia (10.2%) in RA and joint prosthesis infection (5.7%) and other postoperative infection (5.1%) in OA.

CONCLUSION: RA is a risk factor for 90-day readmission after primary THA or TKA. An increasing risk of readmissions noted in RA in 2011 is concerning and indicates that further studies should examine the reasons for this increasing trend.

Full Text

Full text is available at the source.

View full text ↗

Rheumatoid Arthritis is Associated With Higher Ninety‐Day Hospital Readmission Rates Compared to Osteoarthritis After Hip or Knee Arthroplasty: A Cohort Study

Abstract

Full Text

You found one interesting study. We’ll send the next 7.

what lands in your inbox each week:

Recent issues from the glp-1 therapies brief

Abstract

Full Text

Related papers

You found one interesting study. We’ll send the next 7.

what lands in your inbox each week:

Recent issues from the glp-1 therapies brief