VPB tips myocardial infarction

According to clinical and laboratory studies show that sometimes the form of premature ventricular contractions in the early diagnosis of acute myocardial infarction have a certain value, even in the sinus excitement has yet to appear before the acute myocardial infarction graphics, VPB had shown acute myocardial infarction Graphics, and accurate positioning, when VPB has the following characteristics, can be prompted to myocardial infarction. (1) VPB the ST segment is Gongbei shape or slant of Shangtai. (2) front V2 ~ V6 lead the VPB was qR, qRs, QRs, QR-based, rather than QS-rS-or, even if q wave is very small, there also prompted myocardial infarction. (3) VPB the T-wave towering, sharp and symmetrical, is the first performance of myocardial infarction. Some people will comply with the above characteristics of premature ventricular contractions, called "infarction" premature ventricular contractions. This is because the ventricular ectopic rhythm in the point often in Puken Ueno's fiber, they have in mind endometrium, the heart of electrodes (V3 ~ V6), in addition to its always in front of a vector, when the QRS Wave to mainly positive, and there should be a generous notch or rough blunt RR 'group or R-wave, it can also be a two-phase wave of Rs group, ST segment in a forward-oriented lead on a The ramp-type. When a myocardial infarction, in addition to a vector is due back necrosis, at the heart of the outer membrane of the lead will appear on q wave. Therefore, in the heart of the outer membrane of the lead on the R wave as long as there should not be based qR wave, if there are tips on myocardial infarction. Similarly there should not be primary ST segment elevation. VPB graphics were myocardial infarction, in addition to associated with acute myocardial infarction, can be found in hyperkalemia, myocardial ischemia, cerebral vascular accident, hypertrophic cardiomyopathy, but as long as the combination of clinical and laboratory and special inspection Can be a differential.