Define nadir. nadir synonyms, nadir pronunciation, nadir translation, English dictionary definition of nadir. n. 1. Astronomy A point on the celestial sphere directly below the observer, diametrically opposite the zenith. 2. The lowest point: the nadir of their...
Annular tear â definition and causes. By Michael Perry, M.D. An annular tear is one of the most common degenerative spine conditions that develop with the natural aging process of the spine. In fact, many people over the age of 50 have an annular tear and never know it.
An increased prevalence of mitral annular calcification has also been found in patients with systemic hypertension, increased mitral valve stress, mitral valve prolapse, raised left ventricular systolic pressure, aortic valve stenosis, chronic renal failure, secondary hyperparathyroidism, and atrial fibrillation. possible association between mitral annular calcification and coronary artery disease has recently been suggested. Objective: To determine the prevalence of severe coronary artery disease in younger patients with mitral annular calcification.