Test 2 Flashcards
What is the normal flow of blood through the heart?
Right atrium->tricuspid valve>right ventricle->pulmonary artery->lungs->pulmonary veins->left atrium->mitral valve->left ventricle->Aorta
How are heart murmurs classified?
-Location
-Area of the heart where murmur is heard best
-Time of the mumur within S1/S2 cycle
-Intensity of murmur
-Loudness of murmur
What is an innocent murmur?
No anatomic or physiologic abnormality exists
Fever, anemia, rapid growth
What is a functional murmur?
No anatomical cardiac defect exists but a physiological abnormality exists
What is an organic murmur?
A cardiac defect with or without a physiological abnormality exists
What are some of the risk factors for heart defects?
Trisomy 21 (30-50% of cases)
Trisomy 13
Trisomy 18
Diabetes
Phenylketonuria (poorly controlled)
Alcohol consumption
Environmental toxins
The risk of CHD is much higher if?
A first degree relative is affected
What are the 4 classes of CHB?
Increased pulmonary blood flow
Decreased pulmonary blood flow
Ductal Dependent/Mixed Defects
Obstructive Defects
What are the 4 types of increased pulmonary blood flow CHB?
Atrial Septal Defect
Ventricular Septal Defect
Patent ductus arteriosus
Atria-ventricular canal
What is increased pulmonary blood flow CHB?
Defects between the left and right sides of the heart with a left to right shunt that cause pulmonary overcirculation, increased vascular resistance and eventual pulmonary hypertension.
What is an atrial septal defect?
An opening in the septum between left and right atria
What is a ventricular septal defect?
An opening in the septum between left and right ventricle
What is a patent ductus arteriosus?
Failure of the ductus arteriosus closure and due to this the aorta and pulmonary artery remain connected
What is an atrial-ventricular canal?
ASD & VSD allow blood to flow between all 4 chambers
What is CHB decreased pulmonary blood flow?
Defects with obstructed blood flow to lungs or developmental failure leave no connection for right sided blood to flow into the lungs
What are the 2 categories of CHB decreased pulmonary blood flow?
Tricuspid Atresia
Tetralogy of Fallot
What is Tricuspid Atresia?
Decreased pulmonary blood flow due to abcense of tricuspid valve which results in a complete mixing of deoxygenated blood in the heart
What are the signs and symptoms of Tricuspid Atresia?
Cyanosis
Systolic murmur
Poor feeding/weight gain
Fatigue
Clubbing (in older children)
What is the tetralogy of fallot?
4 total defects including VSD, Pulmonary stenosis, overriding aorta and RV hypertrophy
What are the signs and symptoms of tetralogy of fallot?
Cyanosis
Systolic murmur
Clubbing
TET spells (desaturation, worsening cyanosis, squatting)
Increased WOB
Edema
Pulmonary Infections
What is the treatment for tetralogy of fallot?
-Surgery within the 1st year -Attempt to reshunt by repositioning intrathoracic pressure and putting knees to Chest
What are CHB ductal dependent/mixed defects?
Hypo-plastic Left Heart
Transposition of Great vessels
What does survival depend on with CHB ductal dependent/mixed defects?
The ability to mix deoxygenated and oxygenated blood
What is Hypo-plastic left heart?
An underdeveloped left heart with a hypoplastic aorta or atresia