BLOOD CIRCUIT SECTION

The Blood Circuit section contains keys and warning lights that are directly related to the transmission and monitoring of the patient’s blood. Override key is to keep the blood pump running for three minutes when a blood-leak alarm is present. The yellow Override light will illuminate. Prime key is to prime the extracorporeal blood circuit. Pressing Prime will keep the blood pump running when air is sensed in the venous blood chamber and an level detector alarm is present (as is the case during initial set up when the blood circuit tubing is empty). The pump will run for two minutes or until an adequate fluid level is detected by the ultrasonic sensors in the level detector module, or until the volume set in service mode is reached. Stat/Deflate key is to start an unscheduled, manual blood pressure measurement when the cuff is deflated, or instantly deflate the inflated blood pressure cuff. Heparin on/off key is to turn the heparin pump on or off. When the heparin pump is on, the green, triangular light is illuminated. This light will flash when heparin pump is interrupted. There are three warning lights in this Blood Circuit section. First indicator light is the air detector which will illuminate when the fluid level has dropped below the sensors in the venous drip chamber. Minor light will illuminate when a minor blood leak has been detected by the blood leak detector. Blood Leak Detector light will illuminate when an amount of blood greater than 0.45 ml/min has been detected in the dialysate by the blood leak detector.