September 1, 1978
Pulmonary arterial wedge pressure in hemorrhagic shock.
Why the study?
Does the position of a pulmonary arterial wedge catheter affect its ability to accurately measure left atrial pressure during hemorrhagic shock in dogs?
Population
Supine dogs undergoing hemorrhagic shock
Comparison
Pulmonary arterial wedge catheter placed… vs Pulmonary arterial wedge catheter placed…
Design
Preclinical
Authors
Discussion
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Member takes
Implication
Requires Zone III placement for accurate left atrial pressure during canine hemorrhage; leaves open translation to human hypovolemic monitoring.
Structured PICO
Does the position of a pulmonary arterial wedge catheter affect its ability to accurately measure left atrial pressure during hemorrhagic shock in dogs?
P
Population
Supine dogs undergoing hemorrhagic shock
I
Intervention
Pulmonary arterial wedge catheter placed superiorly
C
Comparator
Pulmonary arterial wedge catheter placed dependently
O
Outcome
Accuracy of wedge pressure in reflecting left atrial pressuresurrogate
Pulmonary arterial wedge catheters accurately reflect left atrial pressure only when positioned in Zone III, which has important implications for hemodynamic monitoring during hypovolemia.
Cite This Study
Todd et al. (1978) studied this question.