| epicardial | 1. Relating to the epicardia. 2. Relating to the epicardium. (05 Mar 2000) |
|---|---|
| epicardial fat sign | <radiology> Two lucent lines on lateral CXR anterior to heart, subepicardial fat around LAD, anterior mediastinal fat, lines seen in 40% of all lateral CXRs, if separation greater than 2 mm most likely to be consider pericardial effusion or thickening (12 Dec 1998) |
| cardiac pacing, artificial | Regulation of the rate of contraction of the heart muscles by an artificial pacemaker. (12 Dec 1998) |
| pacing catheter | A cardiac catheter with one or more electrodes at its tip which can be used to artificially pace the heart. (05 Mar 2000) |
| underdrive pacing | Electrical stimulation of the heart at a rate lower than that of an existing tachycardia; designed to capture the heart between beats, i.e., to interrupt a reentry pathway in order to terminate the tachycardia. (05 Mar 2000) |