Ovarian foramen undulant 1.5 mm usually does not require treatment, but if it is accompanied by other symptoms, it can be treated with medication or surgery as prescribed by the doctor. Treatment is not required when there are no other abnormalities associated with the patent foramen ovale. Patients with venous thrombosis or cerebral infarction and abnormal blood coagulation may be treated with oral anticoagulants (e.g., warfarin) when the shunt is small. If only to prevent the recurrence of ischemic cerebral infarction can choose to take antiplatelet drugs (such as aspirin) treatment, for drug treatment is ineffective or not suitable for anticoagulation can be selected for interventional surgical occlusion treatment. To summarize, in most cases, there is no need for treatment of patent foramen ovale, but if there are relevant indications or abnormalities, it is recommended to follow the doctor’s instructions and choose the appropriate treatment according to the specific circumstances.