An ostomy appliance includes an ostomy hydrocolloid having a body-facing side, a pouch-facing side and a stoma opening, at least one fluid aperture formed in the body-facing side and at least one fluidic channel embedded in the ostomy hydrocolloid having a proximal portion disposed in fluid communication with the at least one fluid aperture. The ostomy appliance also includes at least one window formed in the pouch facing side, the at least one window aligned with a distal portion of the fluidic channel such that a portion of the fluidic channel is visible through the window. In another embodiment, an ostomy appliance includes a skin barrier material and an ultrasonic detection device for monitoring the skin barrier material.