such as captopril and enalapril. Diastolic hypertension is more pronounced and spasm
of the mesenteric arteries can be seen.
DUCTAL DEPENDENT LESIONS
Duct-dependent lesions can be divided into malformations that depend on the
ductus for pulmonary lesions include tricuspid atresia and Ebsteins’ anomaly. One
should be judicious with fluid with these lesions.
PRE-OPERATIVE SINGLE VENTRICLE PHYSIOLOGY*
*For this discussion, single ventricle physiology will refer to situations in which
cardiac output to the pulmonary and systemic circulations involves mixing of
deoxygenated and oxygenated blood. Not all examples described will be true single
ventricle lesions or refer to situations that result in true single ventricle anatomy after
eventual repair.
“Single Ventricle Physiology” describes situations in which there is mixing of
deoxygenated and oxygenated blood providing the cardiac output to the pulmonary
(Qp) and systemic (Qs) circuitry. Thus, blood supply to the lungs and body tends to be
in parallel circuitry (heart lungs AND body heart), rather than in series (R heart
lungs L heart body R heart).