The absence of pulmonary artery closure on palpation is the clinical manifestation of Ebstein syndrome. Ebstein syndrome, also known as Ebstein malformation, is a condition in which the tricuspid septal and/or posterior valves occasionally attach to the right ventricular wall near the apex along with the anterior valve downward about 0.5% to 1.0% of the time in precordial disease. This is a rare disease, first reported by Ebstein in 1866. This disease is also known as tricuspid inferior valve malformation. Occasionally, there is a family history, and the offspring of mothers taking lithium early in pregnancy are susceptible to this disease. In the functional right ventricle, systolic pressure may be normal, while diastolic pressure is often increased, similar to constrictive pericarditis. Both systolic and diastolic pressures are elevated in the atrial chambers. There may be a systolic pressure difference on both sides of the pulmonary valve and a diastolic pressure difference on both sides of the tricuspid valve. The former may be due to an overgrown tricuspid leaflet that partially obstructs the right ventricular outflow tract; the latter is due to tricuspid valve malformation and tricuspid orifice stenosis. The latter is due to tricuspid valve malformation and tricuspid stenosis. On palpation, there is no sense of pulmonary artery closure, and the diagnosis should be differentiated from that of heart failure, arrhythmia, cerebral embolism and brain abscess: heart failure, also known as myocardial failure, refers to the inability of the heart to pump out blood supply commensurate with venous return and the metabolic needs of body tissues. It is often caused by a variety of diseases that reduce the contractility of the heart muscle, thereby reducing the blood output of the heart to meet the needs of the body, and resulting in a series of symptoms and signs. Cardiac arrhythmia refers to any abnormality in the origin of the heart rhythm, the frequency and rhythm of the heartbeat, and the conduction of impulses. The terms cardiac arrhythmia or arrhythmia are used with a preference for rhythm disorders, whereas arrhythmia includes both rhythm and frequency abnormalities and is more accurate and appropriate. Cerebral embolism refers to the abnormal solid, liquid, or gaseous object (called embolus) entering the cerebral arterial system along the blood circulation, causing occlusion of the lumen of the artery, resulting in localized brain tissue necrosis in the blood supply area of the artery, which is clinically manifested as sudden onset of focal neurological deficits such as hemiplegia, hemianesthesia, and slurred speech. The disease accounts for 15-20% of cerebrovascular disease. The most common emboli originate from the heart, and cerebral embolism occurs in about 14-48% of patients with rheumatic heart disease; myocardial infarction, endocarditis, atrial fibrillation, and cardiac surgery predispose to this disease; non-cardiac emboli are seen in dislodged atherosclerotic plaques in the neck, traumatic fracture or pneumothorax, improper decompression for diving or high altitude flight, and delivery of pregnant women. Brain abscess is a purulent inflammation caused by the invasion of pathogens such as bacteria, fungi or parasites into the brain parenchyma, followed by the formation of an abscess. A pus cavity is formed in the brain parenchyma, which is clinically manifested by symptoms of increased intracranial pressure, localized signs and infectious symptoms. Brain abscesses due to the latter two pathogens are extremely rare. It can occur at any age and is more common in children and young adults. The incidence is about 2% of neurosurgical inpatients, with a male to female ratio of about 2.5:1.