sazza

Thanks for clearing that up. I think it would be less confusing if the monitor did not display the offset value in the first place. With regards to the CVP values. Can you have a minus value? If so how low can it go (in mmHg and cmH20)?

Hi lovp. The patient was not flat. More like lying at 30 degrees in bed. No more than 45 degrees.

Hi everone. When reading the CVP via a monitor. First you need to zero the transducer, to set it to atmospheric pressure. On our monitors it says "offset to, lets say, 5mmHg". My question is, when you eventually record the actual CVP do you take the zeroing reading into consderation? Or is the value on the monitor the value you record? For example: When zeroing, the transducer is offset to 5mmHg. The monitor then records 10mmHg as the CVP. Is the CVP 10mmHg or do you use the offset value. So that the CVP is actually 5mmHg. Also what are the lowest levels a CVP could record. I.e could it record minus levels? I hope this all makes sense to you. Any help here would be appreciated Thanks sazza