Echo and PA Pressures
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When is the PA pressures and RV pressures not the same?
Pressence of RV/PVOT obstruction
How can PA pressure be measured?
Pressure difference across TV and the estimated RA pressure (from IVC size and response to respiration)
How is PA pressure calculated?
PAP = TR Gradient + RA Gradient
- Where TR Gradient = V
- = 4V2
Calculate PAP is the TV velocity = 2.3m/s and the IVC collapses >50% and is 1.9cm:
PAP = 26.16mmHg - 31.16mmHg
- PAP = TR Gradient + RA Pressure
- RA pressure = 5 - 10mmHg
- TR Gradient = 4 x 2.32
- = 21.16
- PAP = (21.16 + 5) - (21.16 + 10)
Which cardiac walls does the LAD descending supply?
- Anterior - Basal, Mid and Apical
- Lateral - Basal, Mid and Apical
- Inferior - Apical and Lateral
What cardiac walls does the LCx supply?
What cardiac walls does the posterior descending RCA and LCx supply?
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