CARDIOLOGY- Pathology Flashcards
Characteristics “Blue babies”
Right to left shunt, Early cyanosis
When is often diagnose right to left shunt?
Prenatally or become evident immediatly after birth
What is the treatment for right to left shunt?
Ussually require urgent surgical correction and/or maintenance of a Patent Ductus arterious
Right to left shunt diseases
The 5Ts:
- Truncus arteriosus (1 vessel)
- Tansposition (2 swithced vessels)
- Tricuspid atresia (3= Tri)
- Tetralogy of Fallot (4=Tetra)
- TAPVR (5 letters)- Total Anomalous Pulmonary Venous Return
What happens in Persistent truncus arteriosus?
Failure of truncus arteriosus to divide into pulmonary trunk and aorta
What do most patients with persistent truncus arteriosus have?
Ventricular Septal Defect
What is wrong in D transposition of great vessels
Aorta leaves RV (anterior) and pulmonary trunk leaves LV (posterior)
What is the result of D transposition of great vessels?
Separation of systemic and pulmonary circulations
This is the prognosis of D transposition of great vessels?
Not compatible with life unless a shunt is present to allow mixing of blood (eg VSD, PDA, or patent foramen ovale)
Which is the reason of D transposition of great vessels?
Due to failure of the aorticopulmonary septum to spiral
Without treatment how is the life expectancy for D transposition of great vessels?
Without surgical intervention, most infants die within the first few months of life
Which problems are found in Tricuspid atresia?
Absence of tricuspid valve and hypoplastic RV
What is required in Tricuspid atresia for viability?
Both Ventricular Septal Defect and Atrial Septal Defect
What causes Tetalogy of Fallot?
By anterosuperior displacement of the infundibular septum
Most common cause of early childhood cyanosis
Tetralogy of Fallot
Characteristics of Tetralogy of Fallot
Pulmonary infundibular stenosis
Right Ventricular Hypertrophy
Overriding aorta
Ventricular Septal Defect
What is most important determinant for prognosis in Tetralogy of Fallot?
Pulmonary infundibular stenosis
In Tetrallogy of Fallot what causes right to left flow across Ventricular Septal defect?
Pulmonary stenosis
Clinical manifestation of Pulmonary stenosis causing right to left flow across Ventricular Septal defect
Early cyanotic “tet spells,” Right Ventricular Hypertrophy
What does Squatting manuever causes in patients with Tetrallogy of Fallot?
↑ systemic vascular resistance, ↓right to left shunt, improves cyanosis
Treatment for Tetrallogy of Fallot
Early surgical correction
What happens in Total Anomalous Pulmonary Venous Return?
Pulmonary veins drain into right heart circulation (SVC, coronary sinus)
Which cardiac anomallies are associated to Total Anomalous Pulmonary Venous Return? which is the benefit?
Atrial Septal Defect, and sometimes Patent Ductus arteriosus
Allow for right to left shunting to maintain cardiac output
Characteristics “blue kids”
Left to right shunt- Late cyanosis