Does Tetralogy of Fallot easily lead to heart failure?

Written by Tong Peng

Pediatrics

Updated on January 22, 2025

00:00

00:00

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.

Other Voices

home-news-image

Written by Hu Qi Feng

Pediatrics

40sec

home-news-image

Tetralogy of Fallot cyanosis cause

Tetralogy of Fallot, due to a ventricular septal defect combined with right ventricular outflow tract narrowing, can display left-to-right, bidirectional, or even right-to-left shunting at the ventricular level. Patients with mild pulmonary stenosis can have left-to-right shunting and usually do not exhibit cyanosis. However, when the pulmonary stenosis is severe, significant right-to-left shunting occurs, and clinically apparent cyanosis becomes evident. Cyanosis is commonly observed in areas rich in capillaries and superficial tissues, such as the lips, fingertips, nail beds, and bulbar conjunctiva.

home-news-image

Written by Yan Xin Liang

Pediatrics

1min 20sec

home-news-image

Is Tetralogy of Fallot serious?

Tetralogy of Fallot is the most common cyanotic congenital heart disease in children, accounting for about 10% of congenital heart diseases. It is a complex type of congenital heart condition, consisting of four defects: a ventricular septal defect, right ventricular outflow tract obstruction, overriding aorta, and right ventricular hypertrophy. Due to these four malformations, children will experience cyanosis, poor exercise tolerance, and may quickly become fussy or emotionally disturbed with physical activity. This can lead to noticeable worsening of dyspnea and cyanosis. They may also exhibit a preference for squatting, as squatting can decrease the return blood volume to the heart, increase systemic vascular resistance, and temporarily relieve hypoxic symptoms. Other symptoms include clubbing, paroxysmal hypoxia attacks which are more common in infants. These attacks can be triggered by crying, emotional excitement, anemia, infections, etc., and suddenly manifest as paroxysmal breathing difficulties. In severe cases, there can be fainting, convulsions, and even death. Therefore, these clinical manifestations are very serious, making this disease a significantly dangerous condition.

home-news-image

Written by Hu Qi Feng

Pediatrics

59sec

home-news-image

Tetralogy of Fallot Clinical Symptoms

The clinical manifestations of Tetralogy of Fallot include cyanosis, with cyanosis being the primary symptom. The severity of cyanosis is related to the extent of pulmonary stenosis and is commonly seen in areas rich in capillaries, such as the lips, fingertips, nail beds, and conjunctiva, where it appears more pronounced during physical activity or crying. Secondly, the squatting symptom is observed; children may show squatting behavior during walking or playing, often squatting down voluntarily for a moment. During squatting, the flexion of the lower limbs reduces the venous return to the heart, lightening the cardiac load and decreasing the right-to-left shunting, thereby alleviating hypoxia. Thirdly, clubbing of the fingers occurs due to long-term hypoxia, leading to hypertrophic growth at the fingertip and toe ends. Fourthly, paroxysmal hypoxic attacks occur.

home-news-image

Written by Hu Qi Feng

Pediatrics

39sec

home-news-image

Tetralogy of Fallot Emergency Measures

Generally, one should often drink water to prevent infection, prevent dehydration and complications. Infants and young children should be especially careful in their care, to avoid episodes of paroxysmal hypoxia. In mild cases of hypoxic episodes, placing them in a knee-chest position can alleviate the symptoms. In severe cases, oxygen should be administered immediately, along with the appropriate drug treatment. If the episodes cannot be effectively controlled with medication, emergency surgical intervention may be necessary. With the continuous improvement in surgical techniques this year, the mortality rate for curative surgeries has been decreasing.

home-news-image

Written by Hu Qi Feng

Pediatrics

37sec

home-news-image

Tetralogy of Fallot in children who prefer squatting is because

Tetralogy of Fallot exhibits squatting symptoms because squatting involves flexing the lower limbs, which reduces the amount of venous return to the heart, thereby decreasing the cardiac workload. At the same time, the arteries of the lower limbs are compressed, increasing systemic vascular resistance, reducing right-to-left shunting, and temporarily alleviating hypoxia symptoms. Infants who cannot walk often prefer to be held with their thighs up, with both lower limbs bent; after they become able to walk, they frequently squat down momentarily during walking or playing.