Oct 28, 2023 · These episodes are called tet spells. 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 …

Babies who haven’t gotten treatment for tetralogy of Fallot can get “tet spells.” This happens when their oxygen level drops without warning while or after feeding, crying or pooping.

Dec 15, 2025 · It is often diagnosed after the infant has an episode of turning blue during crying or feeding (a tet spell). Findings on a physical exam may make a healthcare provider suspect a …

Tet spells can be triggered by various factors such as crying, progressive tachypnea, and deep breathing, with symptoms including but not limited to blue skin, nails and lips, profound crying …

Cyanosis is the result of too much oxygen-poor blood being pumped through the body. Cyanosis may come in sudden spells, called tet spells, when a baby is crying or feeding. It happens …

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.

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 …

A tet spell, also known as a hypercyanotic or hypoxic spell, is characterized by a sudden and profound drop in a baby’s blood oxygen, causing bluish skin discoloration.

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 …

This phenomenon, called a "tetralogy spell," usually results from a sudden increased constriction of the outflow tract to the lungs so that pulmonary blood flow is further restricted.