en عمومى General پژوهشي Research <span style="font-size:12pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><b>Background: </b>Today, knowing the prognosis of PTE patients is of particular importance, because currently some of these patients can be treated on an outpatient basis, as well as determining the assignment of these patients in the emergency medicine service according to the prognosis of these patients helps a lot in survival. These patients will also reduce costs.</span></span></span><br> <span style="font-size:12pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><b>Methods:</b> The present study is a longitudinal and retrospective study for all patients hospitalized in Qaem and Imam Reza emergency rooms between 2017 and 2023, who were over 18 years old and were candidates for CT angiography of the lung according to the standard protocol, and they had acute embolism. In CT angiography it was diagnosed by the radiologist, it was considered. Qualitative and quantitative imaging criteria were evaluated.</span></span></span><br> <span style="font-size:12pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><b>Results:</b> No statistically significant relationship was found between survival status and gender, presence of DVT, history of smoking and history of retplase injection (P>0.05). There was a significant difference in the systolic and diastolic blood pressure of patients in the two groups, and in the improved group, blood pressure was lower, but no significant difference was observed in the breathing rate and heart rate (P>0.05). Adjusted for age, sex, systolic and diastolic blood pressure, having a higher ratio of the maximum longitudinal and transverse diameters of the right to left ventricle, protrusion (Bow) of the interventricular septum and having an embolism at the fourth level and age over 65 years with a higher chance of death was associated (P<0.05).</span></span></span><br> <span style="font-size:12pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><b>Conclusion:</b> The results indicated that CT angiography criteria have predictive value in patients with acute pulmonary thromboembolism.</span></span></span><br> &nbsp; CT Angiography, Pulmonary Thromboembolism, Prognosis. 32 42 http://intjmi.com/browse.php?a_code=A-10-1-584&slc_lang=en&sid=1 Zahra Acheshmeh 10031947532846006712 10031947532846006712 No Department of Emergency Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Mahdi Foroughian 10031947532846006713 10031947532846006713 No Department of Emergency Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Bita Abbasi 10031947532846006714 10031947532846006714 No Department of Radiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Abolfazl Rajabi 10031947532846006715 10031947532846006715 No Department of Emergency Medicine, Ghaem Hospital , Mashhad University of Medical sciences, Mashhad, Iran Maryam Mohammadi 10031947532846006716 10031947532846006716 No Emergency Medicine specialist, Mehrgan Hospital, Kerman, Iran. Fatemeh Maleki 10031947532846006717 10031947532846006717 No Department of Emergency Medicine, Faculty of Medicine, Birjand University of Medical ‎Sciences, Birjand, Iran Reza Akhavan 10031947532846006718 10031947532846006718 Yes Department of Emergency Medicine, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.