Perform CT pulmonary angiography, Echocardiography and lower limb venous sonography

UFH is recommended for patients in whom primary reperfusion is considered, as well as for those with serious renal impairment

severe obesity. LMWH or fondaparinux are preferred over UFH for initial anticoagulation in PE, as they carry a lower risk of inducing

major bleeding and heparin-induced thrombocytopenia. 

This is a wrong response that could lead to potentially harmful results to the health.