neonatal diagnosis
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Neonatal Diagnosis. Nursery is the ideal time to diagnose congenital heart disease (if not prenatally diagnosed) in order to assure early appropriate care Many problems very subtle in early NB period Some present after ductus closes (8-48? Hours) - PowerPoint PPT PresentationTRANSCRIPT
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Neonatal Diagnosis
Nursery is the ideal time to diagnose congenital heart disease (if not prenatally diagnosed) in order to assure early appropriate care
• Many problems very subtle in early NB period– Some present after ductus closes (8-48? Hours)– Some present when PulmonaryVascular Resistance
drops (2-6 weeks)– Some very minor findings won ’t be obvious for
years (minor coarct, ASD, bicusp AV)
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Ductal flow reverses, Branch
PA’s open upDuctus closes,
Flow from RV to descending
Aorta via ductus, PA’s tiny
24 hrsFetal Circulation 8 Hours old
Then PVR
drops (2mos)
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Neonatal Diagnosis
English study: 1590 total pts • 45 diagnosed prior to d/c• 20 presented before 6 weeks of age• 10 at 6wk NB exam• 24 diagnosed later in 1st year of life• 1 die of heart disease undiagnosed (2
Baltimore)
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Neonatal Diagnosis• 50 of babies with murmur in first few days of life
have CHD• 25 of babies with murmur at 6 weeks have CHD• Diagnoses most likely to lead to death soon after
discharge: HLH, IAA, Coarctation (they look pink until ductus closes)
• Some get irreversible pulmonary vascular disease and can’t be repaired- shortened life
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Neonatal Diagnosis
When to get consult on a newborn
• Pathological Murmur
• Cyanosis (sats less than 95)
• Poor pulses/perfusion– Add where
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Neonatal Diagnosis
NY study: Screening for CHD with Pulse Oximetry• Current newborn screening looks for diseases much rarer
than CHD• Post ductal saturations on all babies at two hospitals at
time of NB screen. 11,281 babies/1 yr• If sat 95 echocardiogram done• Results: 4 abnormal sats
3 CHD (2 TAPVR, 1 Truncus)1 Pulmonary Htn,
• 1/3760 incidence
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Neonatal Diagnosis
• This method of screening will only catch cyanotic lesions such as…– Hypoplastic Left Heart
– Pulmonary Atresia
– D-Transposition of Great Arteries
– Total Anomalous Pulmonary Veins
– Tricuspid Atresia
• Will not catch coarctation or Aortic Stenosis, VSD, ASD, pulmonic stenosis
Koppel et al. Pediatrics 2003
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Neonatal Diagnosis
• Hospitals locally starting to set up program– Requires O2 sat screening after 24 hours
– REQUIRES method to do echo (tech, training, and pediatric Cardiologist to read echo)
• Probably more valuable at facilities where few patients get fetal echos
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Neonatal Surgery
• Who gets it
• Mortality
• Long-term neurological outcomes
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Neonatal Surgery• Who gets it
– Ductal dependant lesions• Iaa• HRHS• HLHS• Single Ventricle PA• Coarctation/arch hypoplasia• TAPVR• TGA• Truncus Arteriosus
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Neonatal SurgeryMortality• Congenital heart surgery moving into era of
outcomes research-Can’t just ask for institutional mortality for CH surgery. Need to ask what is mortality by risk category for particular type of patient and surgery.
• 2 systems out there, RACHS and Aristotle score
Jenkins et al. Journal of Thoracic and Cardiovascular Surgery, 2002
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Neonatal Surgery
Risk Categories
1= ASD, PDA (>30 d) , coarct (>30 d)
2=ASD/VSD, TOF, Glenn, sub AS
3=AVR, Ross procedure, MVR
4=arterial switch, Truncus arteriosus
5=truncus and interrupted arch
6= Norwood, Damus-Kaye-Stansel
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Neonatal Surgery
0.40% 0.00%
3.80%
0.60%
8.50%
1.80%
19.40%
8.60%
47.70%
11.40%
0.00%
5.00%
10.00%
15.00%
20.00%
25.00%
30.00%
35.00%
40.00%
45.00%
50.00%
Lowest Low Moderate High Highest
PCCCOHSU
(0/104) (2/304)
Risk Category(5/274) (8/92) (4/35)
Mor
tali
ty
RACHS surgical risk groups and OHSU congenital heart surgery outcomes (1/01-9/04)
(JTCVS 2000, 123:110-8) (940 patients)
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Neonatal Surgery
Long-term neurological outcomes
• Cognitive and adaptive behavior abnl and lower than expected at school age for heart transplant HLHS pts
• Similar for Norwoodglennfontan
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Neonatal Surgery
• New study compares TCA vs low flow cardiopulmonary bypass (with short CA) in neonates having arterial switch
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CardioPulmonary Bypass
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CPB Circuit: IVC and SVC Cannulae
Aortic Cannula
oxygenator
pump
Heater/Cooler
Rtn to Body
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Neonatal Surgery
• Total Circulatory Arrest- the body is cooled by the CPB pump to enable the body to withstand no blood flow. The heart is stilled with cardioplegia, the pump is turned off and the pump catheters are removed.
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Neonatal Surgery
• TCA effect not noticed if less than ~40 min. After 41 min worse outcome longer TCA.
• At 8 years old—Both groups had academic, fine motor, visual spatial, attention and higher order thinking than expected for general population. 1/3 in special ed or remedial education
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Neonatal Surgery
• TCA-worse manual dexterity, apraxia, V-M tracking, Handwriting
• Low flow bypass--impulsiveness, worse behavior• These results appear to be worse than surgeries
done at greater than 30 days of age… why?– Neonates have more seizures– Immature neurons
Bellinger et al. J Thoracic Cardiovascular Surgery 2003
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Neonatal Surgery
Advantages• One surgery• Less hypoxia• Maybe shorter LOS
Disadvantages• Perhaps worse long-
term neuro outcome
•Because we can should we?
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Treatment in Cath Lab
• Atrial Septostomy• Stent Ductus• Ductal Closure • Pulmonary and Aortic Balloon valvuloplasty• ASD, VSD closure• Stent pulmonary arteries
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Treatment in Cath Lab
Atrial Septostomy
• Can be done at bedside
• Use a cutting blade and balloon or stent
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Treatment in Cath Lab
Patent Ductus Arteriosus
Surgery vs. Coiling
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Treatment in Cath Lab
Critical Aortic Stenosis
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Treatment in Cath Lab
Critical Pulmonary Stenosis
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Treatment in Cath Lab
ASD Device Closure
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Treatment in Cath Lab
VSD Closure
• In Phase II trials
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Pulmonary Artery Stents
• Inserted for branch pulmonary artery stenosis (often a complication of other surgeries).
• Device positioned then opened up to allow better flow distal to device
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The End