Question of the Week

Question :

Posted On : 12 Oct 2005

How knee chest positioning helps in managing cyanotic spell in Tetralogy Of Fallot?

Expert Answer :

No expert answer available.

Answer Discussion :

pediatriconcall

Children with TOF typically are born with 4 abnormalities of the heart:

Obstruction of the right ventricular outflow tract
Ventricular septal defect-VSD
Enlargement of the right ventricle
Over-riding of the ventricular septum by the aorta
Knee-to-chest position is advised in a cyanotic spell to increase peripheral vascular resistance. This reduces the right-to-left shunting at the VSD, resulting in increased pulmonary blood flow.

19 years ago

Dr. ANURADHA

causes vasoconstriction of the peripheral vessels and helps in increased venous return to heart so helps in tet spells

19 years ago

Dr. ANURADHA

increased peripheral vasocosriction

19 years ago

syed anees

{1}the muscle pump action causes increased return of blood to the right side of the heart and into the pulmonary arteries. {2}also causes increased systemic pressure,causing back pressure over the left side of the heart and thereby decreases shunting through the VSD.

19 years ago

ravindra

decreases systemic vascular resistance

19 years ago

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