The nurse is monitoring a patient's pulmonary vascular resistance. Which value is the normal value?
1. 100–250 mm Hg
2. 10–250 dynes/sec/cm2
3. 400–800 mm Hg
4. 800–1,400 dynes/sec/cm2
2
Rationale 1: A measurement in mm Hg is used to measure pressure only.
Rationale 2: The pulmonary system is a low-pressure system. The pressure of the vascular system is measured in dynes/sec/cm2 due to factors of flow, resistance, and time. This is the normal value for pulmonary vascular resistance.
Rationale 3: A measurement in mm Hg is used to measure pressure only.
Rationale 4: This is the value for SVR.
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