Tetralogy of Fallot syncope causes

Written by Hu Qi Feng

Pediatrics

Updated on September 16, 2024

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The causes of syncope in Tetralogy of Fallot generally involve episodic hypoxia attacks, which are more common in infants. Triggers include breastfeeding, crying, emotional excitement, anemia, and infections. The symptoms manifest as episodic breathing difficulties, and severe cases can suddenly lead to syncope with convulsions or even death. The underlying reason is the narrowing of the pulmonary artery infundibulum accompanied by muscular spasms, causing obstruction of the pulmonary artery and intensifying cerebral hypoxia. Older children may complain of headaches and dizziness.

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Written by Hu Qi Feng

Pediatrics

1min 12sec

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Tetralogy of Fallot Common Symptoms

The clinical manifestations of Tetralogy of Fallot include, firstly, cyanosis as the primary clinical symptom. The degree and onset of cyanosis are related to the severity of pulmonary stenosis, and it often appears in areas with abundant capillaries such as lips, fingers, toes, nail beds, and bulbar conjunctiva. Secondly, squatting symptoms are common among children; they often spontaneously squat for a while during walking or playing. Squatting, with the legs bent, reduces the venous return and thus decreases the load on the heart, temporarily relieving symptoms of hypoxia by reducing the right-to-left shunt. Thirdly, clubbing occurs due to long-term hypoxic conditions, which can cause capillary dilation and proliferation in the fingers and toes, and the local soft tissues and bones also grow and enlarge; fourthly, paroxysmal hypoxic attacks, which are most common in infants, can be triggered by breastfeeding, crying, emotional excitement, or anemia. These attacks suddenly occur and can lead to severe symptoms including difficulty breathing, fainting, convulsions, and even death.

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Written by Yao Li Qin

Pediatrics

58sec

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Can Tetralogy of Fallot be cured?

Tetralogy of Fallot is a type of congenital heart disease linked to family genetics and is considered quite severe among congenital heart conditions. Generally, within a few months after birth, children will exhibit cyanosis of the skin. It is crucial to perform surgery on the child promptly in such cases. Currently, the level of pediatric cardiothoracic surgery in our country has developed very rapidly. For typical cases of Tetralogy of Fallot, surgical treatment can be curative. Moreover, there are no specific requirements regarding weight and age for children undergoing heart surgery nowadays. Therefore, once Tetralogy of Fallot is diagnosed in young children, it is best to perform surgery as soon as possible. These children can then grow up, develop normally, and attend school like their peers.

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Written by Hu Qi Feng

Pediatrics

1min 10sec

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Tetralogy of Fallot symptoms in infants

Infants with Tetralogy of Fallot often exhibit the following symptoms: First, cyanosis, which is most apparent in areas rich in capillaries such as the lips, fingernail beds, and conjunctiva. Cyanosis tends to worsen gradually during crying, emotional distress, or physical exertion. Second, squatting symptoms; infants who cannot walk often prefer to be held by adults in a flexed position of both lower limbs, reducing venous return and easing the cardiac workload. Older children often exhibit squatting during activities such as walking and playing, frequently squatting down momentarily. Third, infants in a prolonged hypoxic environment may develop clubbing, characterized by the enlargement of the fingertips and toes, with capillary expansion and proliferation, resembling drumsticks. Fourth, episodic hypoxia occurs predominantly in infants, triggered by feeding, crying, or emotional distress, manifesting as episodes of respiratory difficulty, with severe cases leading to sudden fainting or convulsions.

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Written by Tong Peng

Pediatrics

55sec

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Does Tetralogy of Fallot easily lead to heart failure?

Tetralogy of Fallot often leads to symptoms of heart failure because it is a severe congenital disease. Affected children tend to present with cyanosis of the lips, impaired growth and development, and a simple echocardiography can reveal specific indicators such as aorta overriding, pulmonary stenosis, right ventricular hypertrophy, and ventricular septal defect. These children have limited lung and heart function, making them prone to increased cardiac load and symptoms of heart failure following infections or physical activity. Therefore, early surgical treatment is necessary for these children to prevent recurrent infectious diseases and heart failure, which can affect their normal growth and development. Additionally, it is crucial to enhance nutrition and exercise in their daily lives to boost their immune system. For Tetralogy of Fallot, early detection and treatment are essential.

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Written by Hu Qi Feng

Pediatrics

32sec

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Tetralogy of Fallot is what?

Tetralogy of Fallot is the most common cyanotic congenital heart disease in infants, accounting for about twelve percent of all congenital heart diseases. It was thoroughly described by the French physician Fallot in 1888, which is how it got its name. Tetralogy of Fallot consists of four cardiac malformations: first, obstruction of the right ventricular outflow tract; second, ventricular septal defect; third, overriding aorta; fourth, right ventricular hypertrophy.