Ovular foramen nonisolation, a relatively common structural abnormality of the heart in newborns, is not significantly related to choking. Most choking is caused by the still imperfect development of the neonatal nervous system, pharyngeal cartilage, as well as the small stomach volume and drinking milk too quickly. During embryonic development, the septum between the two atria, gradually grows to separate the two atria, but does not completely adhere and fuse, leaving a small cleft that is the foramen ovale. During fetal life, the foramen ovale is open and is one of the more important blood flow channels supplying the body circulation. After birth, due to the increased pressure in the left atrium, most of the unclosed foramen ovale will fuse and close 5-7 months after birth, and it is normal for the foramen ovale to remain open until 1 year of age. If the foramen ovale is still not closed by the time the child is older than 1 year, cardiac ultrasound can clearly show and make a diagnosis with little impact on health. Even in adulthood, most people with unclosed foramen ovale do not experience abnormal blood shunts or chest tightness, so observation is sufficient and no special treatment is needed. It is important to note that foramen ovale non closed may cause the pressure in the left atrium to exceed that in the right atrium due to coughing, as well as strenuous exercise, diving, etc., resulting in a shunt of blood flow from the right to the left of the heart, causing symptoms such as headache, dizziness, difficulty breathing, and weakness of the limbs. In this case, it is necessary to seek prompt medical attention for treatment by a procedure such as transcatheter occlusion. The prognosis is relatively good after treatment of patent foramen ovale, so there is no need to be overly concerned.