A pipe including an inner corrugated tube having an axis A-A\u2032, defining a plurality of corrugations leading radially towards the axis and at least one tensile armor layer, arranged around the corrugated tube. In one embodiment, cardiac signals are sensed and pacing pulse vectors are delivered between at least one of a first left ventricular electrode and a second left ventricular electrode. For initially placing the light source on the optical center line of the camera, the light source may be mounted on a carriage unit that can move the light source in three different directions. The read descriptor and the write descriptor are included in a commit request for a candidate transaction at the client-side component, and transmitted to a transaction manager. Each of the panels has one of a pair of rams mounted thereto. The compounds are useful for treating coronary artery disease.