Cranial leaks can cause headaches and nasal drainage. The halo test (d) is a less precise method of determining if csf is present in the otorrhea or rhinorrhea of a head trauma patient A drop of the fluid is placed on a tissue or filter paper, and a rapidly expanding ring (halo) of clear fluid around red blood defines a positive test. It happens when cerebrospinal fluid leaks from the nose or ears, making a halo shape on gauze or tissue This sign is important for diagnosing head trauma It means there might be a skull fracture causing a cerebrospinal fluid leak
Finding this sign fast can help prevent serious infections. The “halo” or “double ring sign is a form of pillow chromatography The blood components separate from the csf as they move through the pillow fabric, creating a clear ring or halo surrounding a bloody spot. In patients with head trauma, a mixture of blood and csf may make the diagnosis difficult Csf separates from blood when it is placed on filter paper, and it produces a clinically detectable.
OPEN
