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Predictors of thirty-day readmission after anterior cervical fusion
Francis Lovecchio1, Wellington K Hsu, Timothy R Smith
1*Northwestern University Feinberg School of Medicine, Chicago, IL †Department of Orthopaedic Surgery and ‡Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL §Rosalind Franklin University of Medicine and Science, North Chicago, IL; and ¶Department of Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL.
Insights
The nationwide readmission rate after anterior cervical discectomy and fusion (ACDF) surgery is 2.5%. Patients with hypertension may have a higher risk of readmission, even without complications.
Area of Science:
- Neurosurgery
- Spine Surgery
- Health Services Research
Background:
- Anterior cervical discectomy and fusion (ACDF) is increasingly performed, leading to rising healthcare costs.
- Readmissions after ACDF can strain healthcare resources, and predictors are not well-researched.
- Understanding readmission drivers is crucial for optimizing patient care and resource allocation.
Purpose of the Study:
- To determine the incidence of 30-day readmission after ACDF.
- To identify factors predicting 30-day readmission following ACDF.
- To analyze the impact of demographics, comorbidities, and operative characteristics on ACDF readmissions.
Main Methods:
- Retrospective cohort study utilizing the American College of Surgeon's National Quality Improvement database (2011).
- Analysis included patients undergoing ACDF or anterior corpectomy and fusion.
- Multivariate logistic regression identified independent predictors of readmission.
Main Results:
- The nationwide readmission rate after ACDF was 2.5%.
- Common complications in readmitted patients included pulmonary, wound, and urinary tract infections (8.5% each).
- Older patients (≥65 years) and those with hypertension or diabetes had higher readmission rates.
Conclusions:
- Surgeons effectively manage peri- and postoperative complications to control readmission rates.
- Hypertension is an independent predictor of readmission after ACDF, irrespective of complications.
- Targeting patients with hypertension may help reduce ACDF readmissions.
Study Design:
Retrospective cohort study.
Objective:
To determine the incidence of and factors predicting 30-day readmission after anterior cervical discectomy and fusion (ACDF).
Summary Of Background Data:
ACDF is being performed on an increasing basis on a wider population of patients, which is accompanied by rising costs. Readmissions have the potential to further deplete health care resources. Although past studies have shown that readmissions after surgery are driven by operative complications, specific predictors of readmission after ACDF are not well researched.
Methods:
All patients who underwent ACDF or anterior corpectomy and fusion procedures in 2011 were selected from the American College of Surgeon's National Quality Improvement database. Readmissions were analyzed on the basis of demographics, comorbidities, operative characteristics, and complications were compared in univariate analyses. Multivariate logistic regression models were created to isolate the independent effects of preoperative and postoperative factors on readmission.
Results:
The nationwide readmission rate after ACDF surgery in this study is 2.5%. Pulmonary complications (8.5%), wound complications (8.5%), and urinary tract infections (8.5%) are the most common complications seen in readmitted patients. Readmitted patients were significantly older (58 vs. 53, P = 0.003), with higher rates of diabetes and hypertension (28.8% vs. 13.9%, P = 0.001; 64.4% vs. 42.6%, P = 0.001, respectively). Although certain preoperative factors such as age 65 years or more and preoperative stay more than 24 hours increase the odds of operative complications (odds ratio, 3.5; 95% confidence interval, 2.0-6.0 and odds ratio, 6.2; 95% confidence interval, 3.4-11.1, respectively), hypertension may independently increase the likelihood of readmission outside of any effect on complications (odds ratio, 1.8; 95% confidence interval, 1.0-3.4).
Conclusion:
The data in this study suggests that surgeons are already controlling readmission rates by limiting peri- and postoperative complications, but patients with a history of hypertension could have an increased likelihood of being readmitted despite avoiding a complication.
Level Of Evidence:
3.

