TY - JOUR AU1 - Joe H. Leonard AB - Service, California INCE THE ADVENT of clinical and experimental procedures requiring extracorporeal circulation of blood, there has been a constant search for simple and accurate means to measure blood flow rates. Where intermittent measurements are satisfactory and flow rates relatively slow as, for example, with OuClet artificial dialysis, this method offers certain improvements. It is volumetric in measurement, allows flow to continue unaltered and has no connection with the during a measurement, ambient air. Two forms are shown which illustrate the basic principle. There is a volumetrically graduated upper reservoir and a lower reservoir. The two reservoirs are connected by a passageway which may be occluded by digital pressure. In addition, an airway connects the upper part of both reservoirs. The device is inserted vertically into the blood line. When no measblood flows directly through the urement is being made, passageway and into the lower reservoir without accumulating in the upper reservoir. In the lower reservoir blood maintains Received for publication 29 May I 961. a level at line L. During a measurement the passageway is closed for a measured time interval and the number of milliliters accumulated in the upper reservoir during this time, as observed through TI - A volumetric blood flowmeter JF - Journal of Applied Physiology DA - 1962-01-01 UR - https://www.deepdyve.com/lp/the-american-physiological-society/a-volumetric-blood-flowmeter-JmESdkbfU5 VL - 17 IS - DP - DeepDyve ER -