Tetralogy of Fallot
- epidemiology
- signs and symptoms
- diagnosis
- pathophysiology
- causes and risk factors
- treatments
- course
- patient education
- community resources
- references
Epidemiology
Signs and Symptoms
One symptom is an increasing cyanosis with crying.
Hypercyanotic (Tet) spells
Acute rise in heart rate (crying, etc) leads to a strng increase in impedance in the pulmonary aretery, leading to increased right-to-left shunt. This leads to a drop in systemic resistance and thereby increased...
Patents are stabilized and admitted to hospital
Diagnosis
Pathophysiology
Four classic features:
- sub pulmonary muscular obstruction
- aorta shifted to the right
- interventricular communication
- concentric right ventricular hypertrophy
Causes and Risk Factors
Treatments
For acute hypercyanotic spells,
Squatting in older shildren increases systemic vascular resistance.
Pushing a baby's knees to chest does th same thing.
Oxygen is a pulmonary vasodilator.
Morphine's sedative effects calm people.
Beta blockers, such as propanalol, slow heart rate.
Course
Patient Education
Community Resources