1 Idiopathic cyclic edema â This is a condition in which one leg swells in correlation to the menstrual cycle.  AV fistula â An AV fistula can be post-trauma or congenital. An AV fistula of the femoral artery can cause a swollen leg that is warm and with prominent veins. It can cause systemic symptoms of heart failure.
A network video recorder (NVR) is a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device.ideo on a DVR is encoded and processed at the DVR, while video on an NVR is encoded and processed at the camera, then streamed to the NVR for storage or remote viewing. Hybrid NVR/DVR security systems exist which incorporate functions of both NVR and DVR; these are considered a form of NVR.
â The NVR connects to the computer network and so does all the IP cameras. This allows you to take advantage of the existing network infrastructure instead of running wires from a âhome baseâ location to all the cameras.