A case of type A aortic dissection suspected of acute pulmonary embolism and literature review
A patient with chest pain and chest tightness was admitted in our hospital.Cardiac ultrasound and CT examination on admission indicated the possibility of aortic dissection,but the patient had severe hypoxemia[arterial partial pressure of oxygen/fraction of inspired oxygen in nitrogen(PaO2/FiO2)<200 mmHg]and increased right heart load,and was consistent with the clinical manifestations of acute pulmonary embolism.The computed tomography angiography(CTA)examination was further improved,and a huge pseudoaneurysm formed by aortic dissection compressed the main pulmonary artery,which was further confirmed by imaging during the operation.The hypoxia in this patient was actually caused by local compression of aortic dissection aneurysm leading to pulmonary artery stenosis.This case was relatively rare,clinical attention should be paid to rapid identification with auxiliary examination means to avoid missed diagnosis and misdiagnosis caused serious consequences.