IVC filters-Trends in placement and indications, a study of 2 populations.
Inferior vena cava filter (IVCF) placement appears to be expanding over time despite absence of clear directing evidence.Two populations were studied. The first population included patients who received an IVCF between January 2005 and August 2013 at our community hospital center. Demographic information, indications for placement, and retrieval rate was recorded among other variables. The second population comprised of patients receiving an IVCF from 2005 to 2012 according to the Nationwide Inpatient Sample (NIS) using ICD-9CM coding. Patients were divided into 2 groups based on the year of admission for comparison, that is, first group from 2005 to 2008 and the second from 2009 to 2012. In addition, we analyzed annual trends in filter placement, acute venothromboembolic events (VTE) and several underlying comorbidities within this population.At our center, 802 IVCFs were placed (55.2% retrievable); 34% for absolute, 61% for relative, and 5% for prophylactic indications. Major bleeding (27.5%), minor self-limited bleeding (13.7%), and fall history (11.2%) were the commonest indications. Periprocedural complication rate was 0.7%, and filter retrieval rate was 7%. The NIS population (811,487 filters) saw a decline in IVCF placement after year 2009, following an initial uptrend (Ptrend < 0.01). IVCF use among patients with neither acute VTE nor bleeding among prior VTE saw a 3-fold absolute reduction from 2005 to 2012 (33,075-11,655; Ptrend < 0.01). Patients from 2009 to 2012 were more likely to be male and had higher rates of acute VTE, thrombolytic use, cancer, bleeding, hypotension, acute cardiorespiratory failure, shock, prior falls, blood product transfusion, hospital mortality including higher Charlson comorbidity scores. The patients were younger, had shorter length of stay, and were less likely to be associated with strokes including hemorrhagic or require ventilator support. Prior falls (adjusted odds ratio-aOR 2.8), thrombolytic use (aOR 1.76), and shock (aOR 1.45) were most predictive of IVCF placement between 2009 and 2012 on regression analysis.Recent trends suggest that a higher proportion of patients receive temporary IVCF, for predominantly relative indications. Nationally, the number of filters being placed is decreasing, especially among those who did not experience acute VTE or bleeding events. Prior falls, thrombolytic therapy, and shock were most predictive of IVCF placement in latter half of the study period.
Department of Cardiology, Lehigh Valley Hospital, Allentown Department of Medicine Department of Radiology, Einstein Medical Center, Philadelphia, PA Mount Sinai St Luke's-Roosevelt Hospital, New York, NY Saint Peter's University Hospital, New Brunswick, NJ Division of Pulmonary and Critical Care, Einstein Medical Center, Philadelphia, PA.
Mahek
M
Shah
Talal
T
Alnabelsi
Shantanu
S
Patil
Shilpa
S
Reddy
Brijesh
B
Patel
Marvin
M
Lu
Aditya
A
Chandorkar
Apostholos
A
Perelas
Shilpkumar
S
Arora
Nilay
N
Patel
Larry
L
Jacobs
Glenn G
GG
Eiger
D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015897:Comorbidity; D020878:Device Removal; D005260:Female; D006470:Hemorrhage / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000517:prevention & control*; D012189:Retrospective Studies; D012307:Risk Factors; D012737:Sex Factors; D012959:Socioeconomic Factors; D016306:Vena Cava Filters / Q000706:statistics & numerical data*; D054556:Venous Thromboembolism / Q000601:surgery*