Negative predictive value of computed tomography pulmonary angiography with indirect computed tomography venography in intensive care unit patients.

摘要: Purpose: The aim of the study was to evaluate negative predictive value (NPV) combined computed tomography (CT) pulmonary angiography (CTPA) and indirect CT venography (CTV) in intensive care unit (ICU) setting. Materials Methods: We retrospectively reviewed records 181 consecutive ICU patients who underwent CTPA/CTV Radiology reports were examined determine whether positive for embolism (PE), PE deep venous thrombosis (DVT), or DVT alone; indeterminate; negative. Results that reported as further evaluated evidence within 30 days by imaging, clinical evaluation, autopsy data. outcomes significance calculating rate ratio 95% confidence interval. Results: A total 41 (22.7%) diagnosed with thromboembolism, 29 (70.7%) PE, 8 (19.5%) DVT, 4 (9.8%) DVT. Seven studies considered nondiagnostic. Seventeen deaths occurred CTA/CTV, which none felt be related PE/DVT. Of 140 read nondiagnostic, determined have thromboembolism (3 PEs 1 DVT) initial (NPV = 97.1%). If received prophylactic anticoagulation inferior vena cava interruption (n 25) excluded, NPV decreases 96.5% Conclusion: is reliable exclusion significant patients.