J Hosp Med. 2013 Apr;8(4):173-7. doi: 10.1002/jhm.2013. Epub 2013 Feb 8.
Risks and benefits of prophylactic inferior vena cava filters in patients undergoing bariatric surgery.
Birkmeyer NJ1, Finks JF, English WJ, Carlin AM, Hawasli AA, Genaw JA, Wood MH, Share DA, Birkmeyer JD; Michigan Bariatric Surgery Collaborative.
The United States Food and Drug Administration recently issued a warning about adverse events in patients receiving inferior vena cava (IVC) filters.
To assess relationships between IVC filter insertion and complications while controlling for differences in baseline patient characteristics and medical venous thromboembolism prophylaxis.
Propensity-matched cohort study.
The prospective, statewide, clinical registry of the Michigan Bariatric Surgery Collaborative.
Bariatric surgery patients (n=35,477) from 32 hospitals during the years 2006 through 2012.
Prophylactic IVC filter insertion.
Outcomes included the occurrence of complications (pulmonary embolism, deep vein thrombosis, and overall combined rates of complications by severity) within 30 days of bariatric surgery.
There were no significant differences in baseline characteristics among the 1,077 patients with IVC filters and in 1,077 matched control patients. Patients receiving IVC filters had higher rates of pulmonary embolism (0.84% vs 0.46%; odds ratio [OR], 2.0; 95% confidence interval [CI], 0.6-6.5; P=0.232), deep vein thrombosis (1.2% vs 0.37%; OR, 3.3; 95% CI, 1.1-10.1; P=0.039), venous thromboembolism (1.9% vs 0.74%; OR, 2.7; 95% CI, 1.1-6.3, P=0.027), serious complications (5.8% vs 3.8%; OR, 1.6; 95% CI, 1.0-2.4; P=0.031), permanently disabling complications (1.2% vs 0.37%; OR, 4.3; 95% CI, 1.2-15.6; P=0.028), and death (0.7% vs 0.09%; OR, 7.0; 95% CI, 0.9-57.3; P=0.068). Of the 7 deaths among patients with IVC filters, 4 were attributable to pulmonary embolism and 2 to IVC thrombosis/occlusion.
We have identified no benefits and significant risks to the use of prophylactic IVC filters among bariatric surgery patients and believe that their use should be discouraged.
Copyright © 2013 Society of Hospital Medicine.
- [PubMed - indexed for MEDLINE]
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