Labels:bulletin board | reckoner | sky | window OCR: According to Einthoven scheme the tude of the def Lec tions each pba| is proport ional to the pr^oj ection 01 the vector represent ing the cardiac electr ical forces upon each pba| axis More commonly the deflec tions measured ex ternally are known pub the magn i tude and orientation of the pudd iac vector are to be p termined This may be done by const tructing perpen- dicul ar^ I ines from two pba EEXb at poi ints ap ter^m i ined by the ampI i tude (vol tage 01 the deflect tions the corresponding leads The interseci ion of these perpend icular Tines p termines the vec tor h may be done for each ins tan ir time yiel lding vec torcard i iogram or^ singl vec tor depicting the average elect tr ical forces anp Ioped unp ing veni tr icular depol ar^ iza ion may be ived by simi Iar cons truction ...
