Congeital Heart Defects Flashcards
Shunts for fetal circulation
Ductus venosus
Foremen ovale
Ductus arteriosis
Embryonic development of heart is by ______ weeks
12 weeks
Foremen ovale shunts blood from which ____ side to the ______ side
Left to right
Ductus arteriosus shunts blood from the…
Lungs
Path of fetal circulation
From mother, to fetus via umbilical vein, through fetal circulation…
Returns partially oxygenated and deoxygenated blood to mother via umbilical arteries
Incidence of congenital heart defects
5 to 8 in every 1000 live births
Congenital heart defects have an increased incidence in what kind of babies/births?
Premature, stillborns, low birth weight infants, and spontaneous abortions
Two major groups of heart defects are…
Congenital heart defects and acquired cardiac disorders
Types of congenital heart defects
Congestive heart failure and hypoxemia
Acquired cardiac disorders are from…
Infection, autoimmune responses, environmental factors, familial
Prenatal and maternal factors for congenital heart defects
Rubella, alcohol abuse, older than 40, type 1 diabetes
Genetic factors that put infants at risk for congenital heart defects
Sibling with a defect, parent with CHD, chromosomal problem, born with other noncardiac abnormality
What is pulmonary congestion?
A backup of fluid into lungs
What is a right to left blood shunt and the results of it?
Blood from right side enters left side of heart and causes hypoxemia, cyanosis, and polycythemia
What is polycythemia?
Increased viscosity in the blood because there are more RBCs than needed, prone to strokes
What is a left to right shunt and results of it
Blood flow from the high pressured left side to low pressure right side and causes tachypnea, dyspnea, and pulmonary edema
Symptoms of pediatric pulmonary hypertension
Tachycardia- over 160, tachypnea- over 60, s3 and s4 heart sounds, dyspnea, diaphoresis, easily fatigued,
What are acyanotic defects?
Increased pulmonary blood flow, ASD, VSD, PDA
What are cyanotic defects?
Decreased pulmonary blood flow, tetrology of fallot, transportation of great arteries
What is atrial septal defect (ASD)?
An abnormal opening between the right and left atrium from an incompetent foremen ovale and cause incorrect development of atrial septum
Clinical manifestations of Atrial septal defect
Can be asymptomatic, congestive heart failure symptoms, a murmur, and atrial dysrhythmiasw
Treatment of atrial septal defect (ASD)
Surgical with a Dacron patch or no surgical with cardiac catheterization