2023年10月28日 · Tet spells are caused by a rapid drop in the amount of oxygen in the blood. They are most common in young infants, around 2 to 4 months old. Tet spells may be less noticeable in toddlers and older children.

2025年3月13日 · Tetralogy of Fallot is a congenital heart condition, which means it’s present at birth. ToF makes it hard to get enough oxygen to your body because of four issues in your heart’s structure. Surgery in infancy repairs the problems and helps blood flow better, but you’ll need lifelong follow-ups with a provider. Contents What Is Tetralogy of Fallot?

Symptoms include cyanosis, dyspnea with feeding, poor growth, and hypercyanotic "tet" spells (sudden, potentially lethal episodes of severe cyanosis). A harsh systolic murmur at the left upper sternal border with a single second heart sound (S2) is common.

2024年10月21日 · Tetralogy of Fallot (pronounced te-tral-uh-jee of Fal-oh) is a congenital heart defect. Congenital means present at birth. Tetralogy of Fallot occurs when a when a baby’s heart does not form correctly during pregnancy. People with this condition should schedule routine checkups with a heart doctor to stay as healthy as possible.

Tetralogy of Fallot (TOF) is a combination of four congenital (present at birth) heart defects that affect infants and children. The defects occur together and change the way blood flows through the heart and lungs. TOF occurs in about 1 out of every 2,518 babies born in the U.S. each year.

Babies with tetralogy of Fallot may experience “tet spells,” which are sudden, potentially life-threatening instances when the skin becomes even more bluish, coupled with difficulty breathing; it occurs when babies cry, eat, or have bowel movements.

Some babies with tetralogy of Fallot have episodes called tet spells, when they suddenly turn bluish and may faint. These spells are serious. A tet spell may be caused by activities that change the pressure in your baby’s heart and increase the flow of oxygen-poor blood to their body.

Tet spells, also known as hypercyanotic episodes, are a more severe symptom of TOF. These sudden spells can occur after feeding, bathing, or crying. They are caused by a further decrease in blood flow to the lungs, making the baby more blue, …

During the spell there is hypercarbia and hypoxemia (which further increases pulmonary vascular resistance). The process compounds itself creating worsening right-to-left shunting, hyperpnea, right outflow tract obstruction and increased systemic venous return.

A tetralogy or ‘tet’ spell (also known as a cyanotic spell, or hypercyanotic spell) describes a short period when a child’s skin, nails and lips turns a little blue or grey. They are caused by a rapid drop in the amount of oxygen in the blood.