{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["9(7)"],"submitter":["Donnally CJ"],"pubmed_abstract":["<h4>Study design</h4>Retrospective study.<h4>Objective</h4>To identify if a 1- to 2-level posterior lumbar fusion at higher altitude is an independent risk factor for postoperative deep vein thrombosis (DVT) and pulmonary embolism (PE).<h4>Methods</h4>A national Medicare database was queried for all patients undergoing 1- to 2-level lumbar fusions from 2005 to 2014. Those with a prior history of DVT, PE, coagulopathy, or peripheral vascular complications were excluded to better isolate altitude as the dependent variable. The groups were matched 1:1 based on age, gender, and comorbidities to limit potential cofounders. Using ZIP codes of the hospitals where the procedure occurred, we separated our patients into high (>4000 feet) and low (<100 feet) altitudes to investigate postoperative rat"],"journal":["Global spine journal"],"pagination":["729-734"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC6745647"],"repository":["biostudies-literature"],"pubmed_title":["High Altitude Is an Independent Risk Factor for Developing a Pulmonary Embolism, but Not a Deep Vein Thrombosis Following a 1- to 2-Level Lumbar Fusion."],"pmcid":["PMC6745647"],"pubmed_authors":["Gjolaj JP","Donnally CJ","Damodar D","Shenoy K","Sheu JI","Vakharia AM","Vakharia RM"],"additional_accession":[]},"is_claimable":false,"name":"High Altitude Is an Independent Risk Factor for Developing a Pulmonary Embolism, but Not a Deep Vein Thrombosis Following a 1- to 2-Level Lumbar Fusion.","description":"<h4>Study design</h4>Retrospective study.<h4>Objective</h4>To identify if a 1- to 2-level posterior lumbar fusion at higher altitude is an independent risk factor for postoperative deep vein thrombosis (DVT) and pulmonary embolism (PE).<h4>Methods</h4>A national Medicare database was queried for all patients undergoing 1- to 2-level lumbar fusions from 2005 to 2014. Those with a prior history of DVT, PE, coagulopathy, or peripheral vascular complications were excluded to better isolate altitude as the dependent variable. The groups were matched 1:1 based on age, gender, and comorbidities to limit potential cofounders. Using ZIP codes of the hospitals where the procedure occurred, we separated our patients into high (>4000 feet) and low (<100 feet) altitudes to investigate postoperative rat","dates":{"release":"2019-01-01T00:00:00Z","publication":"2019 Oct","modification":"2025-04-04T07:52:20.485Z","creation":"2019-10-11T07:05:36Z"},"accession":"S-EPMC6745647","cross_references":{"pubmed":["31552154"],"doi":["10.1177/2192568219828349"]}}