Paeds cardio Flashcards
what type of shunt causes acyanotic heart diseases?
left to right
acyanotic heart diseases
VSD
ASD
PDA
Coarctation
what happens in acyanotic?
increase pulmonary flow
= pulmonary HTN
get Eisenmenger syndrome (reversal)
what type of shunt causes cyanotic heart disease?
right to left
cyanotic heart diseases
tetralogy transposition truncus arteriosus total anomalous pulmonary return hypoplastic Left Heart Syndrome
what happens in cyanotic?
defect causes lung bypass
when does AVSD present?
first few hours of life
when does aortic coarctation/stenosis present?
first few weeks of life
what is a +ve result in nitrogen wash out test?
if oxygen <15kPa after 100% oxygen for 10 mins
when does tricuspid atresia present?
cyanosis/SOB in first 10 mins
what does tricuspid atresia need in patients?
ASD and VSD to remain patent
murmur in tricuspid atresi
ESM at LSE due to VSD
management of tricuspid atresia
Blacklock-Taussig shunt (artificial ductus)
when does ToGA?
presents when ductus closes at 2-4 days
murmur in ToGA
loud S2 but no murmur
X-ray in ToGA
egg on side
Mx of ToGA
- prostaglandin
2. surgery (switch vessels)
2 types of ASD
- secundum: defect of atrial septum (failure of closure of foramen ovale)
- partial (AVSD): defect of AV septum
when does AVSD present?
cyanosis ay 2-3 weeks
symptoms of ASD
asymptomatic
recurrent/chest infection/wheeze
murmur of ASD
ESM at ULSE
fixed wide splitting of S2
how are VSDs categorised?
small <3mm
large >3mm
symptoms of a small VSD
asymptomatic breathless poor feeding tired = LOUD pan systolic murmur
symptoms of a small VSD
HF SOB recurrent chest infection hepatomegaly = SOFT pan-systolic murmur
