Patients with severe motor and intellectual disabilities (SMID) have a high risk of thrombosis due to long-term bed rest and paralysis of the lower limbs. However, sometimes it is difficult to diagnose thrombosis for patients with SMID, because they cannot complain of their symptoms properly. We experienced a case of SMID with treatment-resistant edema, and we diagnosed the patient with pulmonary thromboembolism (PTE). The patient is a 33-year-old woman, Oshima classification 1, Yokochi classification A1. When she had aspiration pneumonia, systemic edema was observed on her body. The systemic edema was treatment resistant, even after the recovering of aspiration pneumonia. Three months after the onset, we performed detailed examination for her edema, and finally diagnosed PTE. The cause of edema was right heart dysfunction due to PTE. Because her symptoms except edema were scarce, the diagnosis was difficult. However, D-dimer blood level and echocardiographic findings of right heart load were useful for diagnosis. The patient had multiple risk factors for thrombosis, including central venous catheter placement, antiphospholipid antibody syndrome, and use of dysmenorrhea therapeutic medicine. Most of patients with SMID, like this patient, are at high risk of PTE. PTE does not show specific symptoms and may be difficult to diagnose. While taking PTE into consideration, we should carefully examine patients with SMID.
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