Pediatric Enhancement: Fundamentals of Pediatric Cardiology Flashcards
Tools for Evaluation of the Pediatric Cardiovascular System
•History •Physical •Routine studies: –EKG –CXR •Studies for the cardiac patient: –cardiac cath –echocardiogram
Perinatal infections account for 2% to 3%
of all congenital anomalies
TORCH:
–are some of the most common infections associated with congenital anomalies (a lot of eye and skin findings in common) including cardiac defects
–Most of the TORCH infections cause mild maternal morbidity, but have serious fetal consequences
–Toxoplasmosis
–Other (syphilis, varicella-zoster, parvovirus B19, HIV)
–Rubella(think “bluebella”)
»congenital rubella syndrome includes cardiacmanifestations: PDA, PS
–Cytomegalovirus(CMV)
–HSV
–Again, they can have really serious fetal consequences, or fetal loss
Coxsackievirus B, CMV, HSV
»In early pregnancy are teratogenic; later in pregnancy may cause myocarditis
»Active HSV lesions at time of delivery is an indication for cesarean section
PRENATAL exposures (cont’d)
Meds
•Amphetamines >VSD, PDA, ASD, TGA
•Anticonvulsants
–hydantoin: PS, AS, coarc, PDA
–trimethadione: TGA, TOF, hypoplasticleft heart
•Alcohol >FAS: in which VSD, PDA, ASD, and TOF are common
prenatal exposures
maternal condition
–Of course, maternal congenital heart disease: increases risk of CHD from 1% to 15%.
–Infant of diabetic mothers (IDM):
•cardiomyopathy, TGA, VSD, PDA
•Also hypoglycemia, hypocalcemia, polycythemia, LGA (large for gestational age)or SGA (small for gestational age)
–Maternallupus/mixed connective tissue disease: congenital heart block
POSTNATAL history
(they may be presenting with these as chief complaints): –Poor growth (aka FTT = failure to thrive) –Poor feeding (secondary to fatigue and dyspnea) –Tachypnea –Cyanosis –Dyspnea, puffy eyelids –Frequent respinfections –Exercise intolerance –Murmur –Chest pain –Palpitations –Joint symptoms –Neuro symptoms
*Buzz words of presentation:
infant who presents with diaphoresis and tachypnea with feeding, cyanosis, FTT (feeding is all they do = exertional symptoms)
Family history
–Hereditary disease
–Congenital heart disease
–Rheumatic fever
*•Frequently occurs in more than one family member: higher incidence among relatives of rheumatic children, unknown genetic component
–Hypertension, atherosclerosis
Physical Exam
•General: well nourished, well developed “WN/WD”
–“Abnormal facies?” implies chromosomal syndrome
–Examples of syndromes with cardiac manifestations:
•Cornelia de Lange (thick eyebrows, distinct facial features): VSD, ASD
•CHARGE: Coloboma, Heart defects, choanal Atresia, growth/mental Retardation, GU anomalies and genital hypoplasia, Ear anomlies
–conotruncal anomalies (truncus, TOF)
–aortic arch anomalies
•Holt Oram(cardiac-limb): defects or absence of thumb or radius –ASD –VSD
- Color (keep in mind the newborn always has acrocyanosis!)
- Clubbing
- Pectus excavatum: rarely causes cardiac disease
CHARGE
Coloboma, Heart defects, choanal Atresia, growth/mental Retardation, GU anomalies and genital hypoplasia, Ear anomlies
–conotruncal anomalies (truncus, TOF)
–aortic arch anomalies
Coloboma
normal tissue in or around the eye is missing from birth
Choanal atresia
blue but pink when cry, try to pass catheter
Cornelia de Lange
Cornelia de Lange (thick eyebrows, distinct facial features): VSD, ASD
Holt Oram
Holt Oram(cardiac-limb): defects or absence of thumb or radius
–ASD
–VSD
*BP norms are based
on age, gender, and height percentile
*wide and fixed split S2 is
abnormal
Murmurs
•Remember to think about murmurs in terms of:
–Timing (systolic or diastolic)
–Intensity (grade I-VI)
–Quality (musical, harsh, high or low pitched)
- Not present in many severe forms of CHD, such as tricuspid atresia, coarctation of the aorta and transposition of the great vessels.
- When a murmur is associated with a cardiac defect, the intensity of the murmur is unrelated to the severity of the abnormality.
- However, murmur type, along with other heart sounds, is useful in differentiating mild defects from severe abnormalities
Innocent Murmurs
- in children, physiologic murmurs are more common than in adults
- •Low pitched (non-turbulent, not high velocity)
- Still’s: low-pitched sounds heard at the lower left sternal area, “musical.” These most commonly occur between age 3 and adolescence. Low pitched -best heard with the bell of the stethoscope. Can change with position alteration and then can decrease or disappear with the Valsalva maneuver. No clicks are present.
- venous hum: low-pitched continuous murmurs made by blood returning from the great veins to the heart -bell
- pulmonary flow murmur:upper left sternal border. High pitched -best heard with the diaphragm. Also known as benign peripheral pulmonary stenosisof the newborn. Also seen in adolescents or in children with pectus excavatum. Prominent in high-flow situations, such as when a child has a fever or is anemic.
*suspicious murmurs
all of it was in red
- high-pitched
- harsh
- S1 coincident (holosystolic)
- diastolic murmurs
Still’s
low-pitched sounds heard at the lower left sternal area, “musical.” These most commonly occur between age 3 and adolescence. Low pitched -best heard with the bell of the stethoscope. Can change with position alteration and then can decrease or disappear with the Valsalva maneuver. No clicks are present.
Associated ejection clickalong with a high intensity murmur?
stenotic valve
Transient systolic murmur in first hours after birth
Closing pda
The Seven S’s: Key Features of Innocent Murmurs
- Sensitive (changes with child’s position or with respiration)
- Short duration (not holosystolic)
- Single (no associated clicks or gallops)
- Small (murmur limited to a small area and nonradiating)
- Soft (low amplitude)
- Sweet (not harsh sounding)
- Systolic (occurs during and is limited to systole)