MedGen

An electrocardiographic finding, in the absence of left ventricular hypertrophy (LVH) and left bundle branch block pattern on ECG, of either a) new (or presumed new) ST elevation at the J point in two contiguous leads with the following cut-points: greater than or equal to 0.1 mV in all leads other than leads V2-V3 where the following cut points apply: greater than or equal to 0.2 mV in men age greater than or equal to 40 years, greater than or equal to 0.25 mV in men age greater than 40 years, or greater than or equal to 0.15 mV in women; or b) new (or presumed new) horizontal or down-sloping ST depression greater than or equal to 0.05 mV in two contiguous leads, and/or T wave inversion greater than or equal to 0.1 mV in two contiguous leads with a prominent R wave, or R/S ratio greater than 1. (Thygesen K, Alpert JS, Jaffe AS, et al.: the Writing Group on behalf of the Joint ESC/ACCF/AHA/WHF Task Force for the Universal Definition of Myocardial Infarction. J Am Coll Cardiol 60(16):1-18, 2012) [from NCI]

An additional rib-like structure usually between two other ribs, not articulated with the vertebral column. (Makris S, Solomon HM, Clark R, Shiota K, Barbellion S, Buschmann J, Ema M, Fujiwara M, Grote K, Hazelden KP, Hew KW, Horimoto M, Ooshima Y, Parkinson M, Wise LD. Terminology of developmental abnormalities in common laboratory mammals (Version 2). Part B. Birth Defects Res B Dev Reprod Toxicol. 2009 Aug;86(4):227-327.) [from NCI]

An extra rib at the cervicothoracic border with the distal extremity rounded, length less than one third of the length of the ossified portion of the first thoracic rib and no costal cartilage distal. (Makris S, Solomon HM, Clark R, Shiota K, Barbellion S, Buschmann J, Ema M, Fujiwara M, Grote K, Hazelden KP, Hew KW, Horimoto M, Ooshima Y, Parkinson M, Wise LD. Terminology of developmental abnormalities in common laboratory mammals (Version 2). Part B. Birth Defects Res B Dev Reprod Toxicol. 2009 Aug;86(4):227-327.) [from NCI]