David's answer is partially correct. The thing is than when in Spanish we say "descendiente anterior", we are talking about the "left anterior descending artery", which in English is abbreviated as "LDA".

Details of the Left Anterior Descending Artery or LAD and its branches are explained to patients with the use of multimedia.
www.heartsite.com/html/lad.html - 22k

The "LAD", or left anterior descending artery (or anterior interventricular branch of the left coronary artery, or anterior descending branch) is an artery ...
en.wikipedia.org/wiki/Anterior_interventricular_branch_of_left_coronary_artery

A. Mild disease in LAD means that the left anterior descending artery, which is one of the 3 arteries supplying blood to a very important area of the heart ...
www.doctorndtv.com/faq/detailfaq.asp?id=7964 - 30k

Hyperdominant left anterior descending artery continuing across left ventricular apex as posterior descending artery coexistent with aortic stenosis ...
www.cardiothoracicsurgery.org/content/2/1/42 - 70k

INTRODUCTION — The left anterior descending coronary artery (LAD) has long been the focus of concern regarding the prognosis of patients with coronary ...
patients.uptodate.com/topic.asp?file=chd/67693 - 22k

The two main coronary arteries are the left and right coronary arteries. The left coronary artery (LCA), which divides into the left anterior descending ...
www.stanfordhospital.com/healthLib/atoz/cardiac/arteries.ht...




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Note added at 55 mins (2008-04-19 11:42:52 GMT)
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Sorry. Where it says "which in English is abbreviated as LDA", should say "is abbreviated as "LAD".