When comparing pressures obtained from the central venous pressure (CVP) versus pressures obtained from the pulmonary arterial pressure, the nurse knows that:
1. The CVP is expected to be a low pressure while the PAP is the highest pressure obtained in the pulmonary artery catheter.
2. The CVP is expected to be the highest pressure obtained in the pulmonary artery catheter while the PAP is expected to be a low pressure.
3. The CVP and the PAP pressures cannot be compared because these pressures are based on individual patients and their conditions.
4. The individual pressures obtained in the CVP and the PAP are not relevant. The pressure trends guide patient care.
The CVP is expected to be a low pressure while the PAP is the highest pressure obtained in the pulmonary artery catheter.
Rationale: The CVP is expected to be a low pressure while the PAP is the highest pressure obtained in the pulmonary artery catheter. Normal CVP readings vary from 2 to 6 mmHg, and normal PAP pressures vary from 20 to 30 mmHg systolic, and 0 to 8 mmHg diastolic. While pressure readings do vary between individuals, there are expected norms for the CVP and PAP. Individual pressures ARE relevant, but it is also true that trends are used to guide patient care.
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