Patent Ductus Arteriosus
Lt.subcl.

120/80
It connects

Aorta pulmonary

30/10 distal to at the junction between
Lt. subclavian Lt. pulm. & main pulm. Trunk

Haemodynamics
bl. to pulm.
plethora P++ Eisenmenger’s
upper ½

of
­ O2


Lower ½
of ¯ O2
= differential cyanosis

C/P
1- Chest infection 2- hyperdynamic circulation
(P. signs of A.I.)
3- Rt sided F.
s Eisenmenger’s
differential cyanosis.


murmur.
machinery murmur Lt. infraclavicular.
S2 wide splitting.
Catheter Pr. pulm
­

O2 Pulm
­

Pass through anomaly
dye
Treatment
+ Serious complications = infective endocarditis.
Easy surgery ligation.
umbrella device
So surgery is mandatory

+ Premature infants can be treated medically with
endomethacin, which inhibits P.G and stimulate duct closure.


Source: Internal Medicine Book of Dr.Osama Mahmoud (Ain Shams University)