. Medical diagnosis for the student and practitioner. cular node). The result is apreponderance of P-waves over R-waves varying in degree with the ventricu-lar rate. An auricular rate of 75 may accompany a ventricular rate of 40to 20 or much less, for example. tiiitzti mmmm Fig. 230.—Mr. H. F. M. Lead III in a case of auricular fibrillation with a rapidventricular rate. Left ventricular extrasystole is present. Note absence of P-waves, andinversion of T-wave. In partial block some of the auricular contractions get through and causecorresponding ventricular contractions. There is found a prepon
. Medical diagnosis for the student and practitioner. cular node). The result is apreponderance of P-waves over R-waves varying in degree with the ventricu-lar rate. An auricular rate of 75 may accompany a ventricular rate of 40to 20 or much less, for example. tiiitzti mmmm Fig. 230.—Mr. H. F. M. Lead III in a case of auricular fibrillation with a rapidventricular rate. Left ventricular extrasystole is present. Note absence of P-waves, andinversion of T-wave. In partial block some of the auricular contractions get through and causecorresponding ventricular contractions. There is found a preponderanceof the P-waves again but at definite intervals there is found a P-wave whichhas its normal relation to the R-wave. For example in 2 :i block every otherP-wave is in its proper relation to the R-wave with an extra P-wave midwaybetween these two. Here the auricles are beating twice as fast as theventricles. In 3:1 block there are two extra P-waves between two normallyplaced P-waves, all of them being the same distance apart. MEDICAL DIAGNOSIS.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectdiagnos, bookyear1922
