May 29, 2026 · Today we are going to talk about tetralogy of Fallot, which is one of the most common congenital heart defects. In many ways, this lesion is viewed as the benchmark against which other …

Jan 8, 2026 · 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 baby has …

Jun 22, 2012 · Knowing the basics of hypercyanotic spells may leave you still inadequately prepared. Let us expand our therapeutic options.

May 11, 2026 · A tet spell (also known as a hypercyanotic spell) is an episode of acute severe cyanosis that occurs when there is a decrease in systemic vascular resistance, increasing a right to left shunt.

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 and …

Jul 6, 2026 · Without treatment for tetralogy of Fallot, babies can have spells when their oxygen level drops without warning during or after feeding, crying or pooping. These are called tet spells.

A comprehensive guide to understanding the urgent pathology of a Tet spell and executing the immediate actions required for stabilization and treatment.

In some children with unrepaired tetralogy of Fallot, most often those several months up to 2 years of age, sudden episodes of profound cyanosis and hypoxia (hypercyanotic or "tet" spells) may occur, …

Acute episodes of hypoxia and cyanosis caused by right-to-left shunting across the VSD ('Tet Spells') Patients may present with irritability, agitation, grunting, crying, and central cyanosis

Apr 24, 2026 · Learn the common symptoms of Tetralogy of Fallot (ToF) in infants. Discover what causes a tet spell, its triggers, and how to safely respond at home.