Finding blood pressure from density and height difference

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Homework Help Overview

The discussion revolves around calculating blood pressure using density and height difference, specifically focusing on gauge pressure and the relevant equations involved.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants explore the use of a specific formula involving density, gravitational acceleration, and height difference. There are questions about the appropriateness of this approach and the potential existence of alternative formulas for gauge pressure.

Discussion Status

Participants are actively questioning the validity of the initial approach and considering different equations related to gauge pressure. Some guidance has been offered regarding the relevant equation for pressure differences.

Contextual Notes

There is mention of the exercise explicitly referring to gauge pressure, which may influence the choice of equations. Concerns about using the correct formula are evident among participants.

yourheartandsoul
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Homework Statement
A large artery is cannulated, and a saline solution of density 1300 kg * m ^ - 3 is used as the manometer fluid. What is the blood pressure ( gauge pressure ) if the height difference in the manometer tubes is 0.67 m?
Relevant Equations
P=dgh
I did (1300)(9.81)(0.67) and got 8544.51 N/m^2 but unsure if that was the correct route to take. Please confirm or deny if I was approaching it in the correct way!
 
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yourheartandsoul said:
unsure
Why ?
 
BvU said:
Why ?
Because I know there is another formula for gauge pressure and I'm worried it might be that equation and not the one I used.
 
yourheartandsoul said:
another formula for gauge pressure
Namely ?
 
BvU said:
Namely ?
Pabs = Pg + Patm
 
The exercise text mentions gauge pressure explicitly...
 

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