Non-invasive blood pressure measurement in the domestic chicken by the use of the Doppler principle

Non-invasive blood pressure measurement by the use of a technique using the Doppler principle allows estimation of systolic blood pressure and heart rate in the conscious bird without trauma. It permits repeated measurements over a long period with minimal stress to the bird. Blood pressure was measured in hypo-, normo-, and hypertensive birds. Measurement using the Doppler principle technique was compared with invasive catheter measurement simultaneously in the same bird