What are the causes of differential cyanosis?
The reason for the differential cyanosis and clubbing is that due to the right-to-left shunt across the PDA, deoxygenated blood from the right ventricle is preferentially directed into the aorta distal to the left subclavian artery and into the lower extremities.
What causes reverse differential cyanosis?
Abstract. The newborn can experience two types of differential cyanosis (DC). The common type of DC occurs when oxygen saturation in the right hand is greater than in the foot. The second type of DC, reversed differential cyanosis (RDC), occurs when oxygen saturation is lower in the right hand than in the foot.
Does PDA cause cyanosis?
A small PDA may cause no signs or symptoms at all. In patients who do show signs or experience symptoms, these can include: Cyanosis (a blueish hue to the skin) Fatigue.
What are the physiological consequences of transposition of the great vessels?
Potential complications of complete transposition of the great arteries (D-TGA) may include: Lack of oxygen to tissues. The body tissues receive too little oxygen (hypoxia). Unless there’s some mixing of oxygen-rich blood and oxygen-poor blood within the body, this complication causes death.
What is meant by differential cyanosis?
Differential cyanosis refers to the appearance of cyanosis in both lower extremities with a pink right upper extremity. This is seen in patent ductus arteriosus with pulmonary arterial hypertension.
Is transposition of the great arteries a cyanotic heart defect?
TGA is a cyanotic heart defect. This means there is decreased oxygen in the blood that is pumped from the heart to the rest of the body. In normal hearts, blood that returns from the body goes through the right side of the heart and pulmonary artery to the lungs to get oxygen.
What is the difference between the L transposition defect and the D transposition defect?
L-transposition of the great arteries (L-TGA) is also known as congenitally corrected transposition of the great arteries. This condition is different from D-transposition of the great arteries (d-TGA). In L-TGA, the right and left lower pumping chambers of the heart (ventricles) are switched.
Which congenital heart disease has differential cyanosis?
Differential cyanosis in a neonate indicates persistent pulmonary hypertension of the newborn and left-heart abnormalities (aortic arch hypoplasia, interrupted aortic arch, critical coarctation, and critical aortic stenosis).
Is left hand pre or post-ductal?
We conclude from our data that perfusion of the left hand is unaffected by the arterial duct and can be considered pre-ductal.
What is meant by Preductal?
[ prē-dŭk′təl ] adj. Of or relating to the part of the aorta proximal to the aortic opening of the arterial canal. GOOSES.
What is D and L-TGA?