In which phase of respiration is measurement of intravascular pressure by a pulmonary aery catheter done?
To eliminate the effects of intrathoraic pressure on pulmonary capillary wedge pressure values, atrial pressure is measured at the end expiration during which there is no movement of air in and out of thorax. Ref: Critical Care Transpo By American Academy of Ohopaedic Surgeon, Page 580
At the end of expiration
At peak of inspiration
During mid inspiration
During mid expiration