Cath Flashcards
1
Q
8 reasons for damping of a pressure curve
A
Air bubble Blood clot Soft/too compliant catheter Viscous contrast material Kinking of the catheter Partially closed catheter/small lumen/Narrow catheter Multiple/loose connections
2
Q
6 reasons for underdamping
How do you fix it
A
Hyperdynamic heart Tachycardia Long cath Wide cath Stiff/non-compliant cath Tiny air bubbles oscillating Fix: change catheter or add air bubble to the system
3
Q
Relationship between cm water and mm Hg?
A
1 mm Hg = 1.36 cm water or 1 cm water = 0.736 mm Hg
