ACYANOTIC HEART DEFECTS Flashcards
VSD, ASD, PDA, COA, PS
heart or circulatory anomalies that involve either a stricture to the flow of blood or
a shunt that moves blood from the arterial to the venous system (oxygenated to unoxygenated blood, or left-toright
shunts)
Acyanotic heart disorders
5 acyanotic heart defects
- VSD: ventricular septal defect
- ASD: atrial septal defect
- PDA: patent ductus arteriosus
- PS: Pulmonary stenosis
- COA: coarctation of aorta
most common sign of acyanotic heart defects
Audible murmurs
ACYANOTIC HEART DEFECTS
SIGNS AND SYMPTOMS
- Audible murmurs
- Easy fatigability shown as brow sweating (during feeding or crying episodes)
- Hepatomegaly – due to backup of blood
ACYANOTIC HEART DEFECTS
COMPLICATIONS
- Congestive Heart Failure most common complication
- Respiratory distress manifested by: moist cough, diaphoresis, severe dyspnea
What is the direction of the shunt in most cases of Ventricular Septal Defect (VSD)?
Left to right shunt.
What is the anatomical defect in a Ventricular Septal Defect?
An abnormal opening between the left and right ventricles.
What percentage of congenital heart defects (CHD) is accounted for by Ventricular Septal Defect (VSD)?
30%.
What happens to the right ventricle (RV) and pulmonary circulation in Ventricular Septal Defect (VSD)?
Overloading of the right ventricle and pulmonary circulation.
What complications can arise due to the increased pressure from VSD?
Pulmonary hypertension and respiratory failure.
What is the name of the syndrome that occurs when the shunt reverses from right to left due to pulmonary hypertension?
EISENMENGER SYNDROME
What is a potential outcome if pulmonary hypertension progresses in VSD patients?
Reverse shunt (right to left) may develop, leading to Eisenmenger syndrome.
An abnormal opening between the atria that causes increased flow of oxygenated blood into the right side of the heart.
Atrial Septal Defect (ASD)
What is the cause of an Atrial Septal Defect (ASD)?
Failure of the atrial septum to close.
What are the three major types of ASD?
ASD 1 (Ostium primum): Opening at the lower end of the septum.
ASD 2 (Ostium secundum): Opening near the center of the septum.
ASD 3 (Sinus venosus defect): Opening near the junction of the superior vena cava (SVC) and the right atrium.
Which type of ASD is most likely to cause heart failure symptoms?
Ostium primum defect (ASD 1).
Where is the defect located in Ostium Secundum (ASD 2)?
Near the center of the septum.
What is the common location for the defect in Sinus Venosus ASD (ASD 3)?
Near the junction of the superior vena cava (SVC) and the right atrium.
ASD s/sx
H-O-L-E-S
* HF & Pulmo HTN
* Often Respi Infection
* Low Growth & Weight
* Extra Heart Sound
* Stroke
What heart sound is often associated with ASD?
Systolic ejection murmurs.