A comparison between noninvasive and bloody methods for use in the continuous estimation of cardiac contractility.
Simultaneous measurements of the blood pressure in arteria carotis with a catheter device and a new noninvasive continuously recording method were carried out in 7 rabbits with a chronically isolated arteria carotis loop. Results show good correspondence between both methods for pulse curve and blood pressure over a long period and a wide range,as well as good reproducibility. An absolute calibration for the noninvasive method is impossible. The new method is quite suitable for studying the dynamics of pressure pulse and pressure behavior.
D000818:Animals; D001794:Blood Pressure; D001795:Blood Pressure Determination / Q000379:methods*; D002339:Carotid Arteries; D002404:Catheterization; D004562:Electrocardiography; D008991:Monitoring, Physiologic; D009200:Myocardial Contraction; D011674:Pulse; D011817:Rabbits