Direct Measurements of Aortic Blood Pressure in Unanesthetized Rats

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Abstract
A technique for continuous recording and measurement of blood pressure in unanesthetized rats directly from the abdominal aorta (through an implanted tube) was described. Mean aortic blood pressures of 4 rats so far recorded were 70, 90, 95 and 110 mm Hg. Blood pressure thus recorded responded promptly to physiological stimuli and drug action.