Babies who haven’t gotten treatment for tetralogy of Fallot can get “tet spells” when their oxygen level drops without warning while or after feeding, crying or pooping. Tet spells can be as short as a few minutes to as long as several hours.

2023年10月28日 · Tet spells. Some babies with tetralogy of Fallot suddenly develop deep blue or gray skin, nails, and lips. This usually happens when the baby cries, eats or is upset. 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 old.

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. Diagnosis is by echocardiography. Definitive treatment is surgical repair.

2015年3月4日 · The pathophysiology of a tet spell is a decrease in systemic vascular resistance, increasing a right to left shunt which leads to a bunch more things that all just keep increasing the right to left shunt. The key to treatment is to increase systemic vascular resistance.

2012年6月22日 · But, before you judge me too harshly, let us consider the Hypercyanotic Spell (aka, ‘Tet spell’). Hypercyanotic Spell Basics Paroxysmal hypoxemic events, that can lead to quite heroically low oxygen saturations (today the kid in the ED had an initial sat of 20 – that’s on the “low-ish” side I think).

2024年12月2日 · Tetralogy of Fallot (TOF) is the most common cyanotic congenital heart disease, representing 5% to 7% of all congenital heart defects. TOF is a conotruncal cardiac defect characterized by a large and anteriorly malaligned ventricular septal defect, an overriding aortic root, and narrowing of the subpulmonary and pulmonary valves.

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.

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.

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Tet spell is an episodic central cyanosis due to total occlusion of right ventricle outflow in a patient with a congenital heart disease, such as Tetralogy of Fallot (TOF). There are limited cases of patients who lived with untreated TOF until adulthood. Tet spell in an adult is rarely seen in an emergency department.