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.
Swannâs range of DVR (digital video recorder) and NVR (network video recorder) security systems are complete security solution to provide protection for your home or workplace. The DVR connects with the security cameras either via a wired or wireless connection, enabling you to record and view what the cameras see.