L4: Acyanotic Heart Diseases - PDA & ASD Flashcards
(82 cards)
Incidence of PDA
Anatomy of PDA
Pathophysiology of PDA
Pathophysiology of PDA
The extent of the shunt depends on:
There is a wide pulse pressure (due to runoff of blood into PA during diastole)
….
Why isolated large PDA is not a cause of heart failure in neonates?
Symptoms of Small PDA
Asymptomatic
Signs of Small PDA
Signs of Small PDA
- Inspection & Palpation
Signs of Small PDA
- Precordial Bulge
Normal
Signs of Small PDA
- Precordial Activity
Normal
Signs of Small PDA
- Apex
Signs of Small PDA
- Pulsation
- 2nd left space
- Radiate to: 2nd left clavicle - left parasternal border - apex
Signs of Small PDA
- Thrill
Continous
Signs of Small PDA
- Auscultation
Signs of Small PDA
- Heart Sounds
Normal
Signs of Small PDA
- Murmur
Murmur in Small PDA
- Site
2nd Left intercostal space “pulmonary area”
Murmur in Small PDA
- Characters
Machinery or rolling thunder murmur (Gibson’s murmur)
Murmur in Small PDA
- Radiation
Down the left sternal border or to the left clavicle
Murmur in Small PDA
- Timing
- Continuous
- Reaches maximal intensity at end of systole & Wanes in late diastole
Murmur in Small PDA
- If Increased PVR —> Decreased Diastolic component or may disappear
…
Murmur in Small PDA
- Others
Complications of Small PDA