Impact of sepsis on risk of postoperative arterial and venous thromboses: large prospective cohort study

Donzé, Jacques; Ridker, Paul M; Finlayson, Samuel R G; Bates, David W (2014). Impact of sepsis on risk of postoperative arterial and venous thromboses: large prospective cohort study. BMJ, 349, g5334. BMJ Publishing Group 10.1136/bmj.g5334

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OBJECTIVES

To evaluate the impact of preoperative sepsis on risk of postoperative arterial and venous thromboses.

DESIGN

Prospective cohort study using the National Surgical Quality Improvement Program database of the American College of Surgeons (ACS-NSQIP).

SETTING

Inpatient and outpatient procedures in 374 hospitals of all types across the United States, 2005-12.

PARTICIPANTS

2,305,380 adults who underwent surgical procedures.

MAIN OUTCOME MEASURES

Arterial thrombosis (myocardial infarction or stroke) and venous thrombosis (deep venous thrombosis or pulmonary embolism) in the 30 days after surgery.

RESULTS

Among all surgical procedures, patients with preoperative systemic inflammatory response syndrome or any sepsis had three times the odds of having an arterial or venous postoperative thrombosis (odds ratio 3.1, 95% confidence interval 3.0 to 3.1). The adjusted odds ratios were 2.7 (2.5 to 2.8) for arterial thrombosis and 3.3 (3.2 to 3.4) for venous thrombosis. The adjusted odds ratios for thrombosis were 2.5 (2.4 to 2.6) in patients with systemic inflammatory response syndrome, 3.3 (3.1 to 3.4) in patients with sepsis, and 5.7 (5.4 to 6.1) in patients with severe sepsis, compared with patients without any systemic inflammation. In patients with preoperative sepsis, both emergency and elective surgical procedures had a twofold increased odds of thrombosis.

CONCLUSIONS

Preoperative sepsis represents an important independent risk factor for both arterial and venous thromboses. The risk of thrombosis increases with the severity of the inflammatory response and is higher in both emergent and elective surgical procedures. Suspicion of thrombosis should be higher in patients with sepsis who undergo surgery.

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