 Hey guys day 22 out of 30 of our pants review series the last one about kidney stones was kind of a doozy So today I'm gonna give you a pretty easy one. So xanthochromia Define xanthochromia and tell me what it indicates. What is xanthochromia and what does it indicate might be going on Give you guys a few seconds to think about it. I'm all out of champagne So the drop left Okay, xanthochromia Xanthochromia is a yellow wing of the CSF So you get a lumbar puncture a spinal tap and you notice wow that fluid is not clear. It's yellow It's a yellow wing of the CSF the cerebro spinal fluid. What does it indicate? It indicates a spontaneous subarachnoid hemorrhage So one more time. What is xanthochromia? Xanthochromia is a yellow wing of the cerebro spinal fluid the CSF that you find on Lumbar puncture a spinal tap and what it indicates is a spontaneous Subarachnoid hemorrhage now you might be thinking hemorrhage, huh? That should be red right hemorrhage is blood And then you know CNS so subarachnoid it's all in the CNS It's connected to the blood or it's connected to the brain and the spinal column and everything so why isn't it red? Why is it yellow? Well, that's because it's broken down and the blood product that is remaining Once the hemoglobin is broken down is yellow at least that's what I remember very very basically from school It's been a while. Sorry, um, but that's why it's not red Basically, it's yellow because it's some sort of a breakdown process Before it gets into the CSF or while it's in the CSF Whenever that happens, but anyways xanthochromia is yellowing of the CSF found on lumbar puncture indicating a spontaneous subarachnoid hemorrhage