VENOUS PRESSURE-THORAX
From NeuroRehab.wiki
SUMMARY
1. CVP at RA ~4.6 mmHg & fluctuates with respiration.
2. High CVP reading may be caused by anything that puts strain on the right heart: a rapid fluid bolus, pulmonary embolism, tension penumothorax, cor pulmonale.
3. Inspiration generate negative thoracic pressure & helps venous return.
4. Pressure in the subclavian vein, as it crosses the first rib, is positive above atmostpheric pressure, when lying down.
Reference(s)
Barrett, K.E., Barman, S.M., Brooks, H.L., X, J. and Ganong, W.F. (2019). Ganong’s review of medical physiology. 26th ed. New York: Mcgraw-Hill Education
