. Medical diagnosis for the student and practitioner. icientauricular impulses to contraction. Pulsus irregularis perpetuus or delirium cordis taken over auricles. (After Thos. Lewis.) rapid, irregular and unequal contractions which are nevertheless, in toto,sufficient in many instances to maintain a circulation of some effectivenessover long periods. The auricle itself is meanwhile dilated in the diastolic position and is asutterly unable to maintain an efficient contraction of its own musculature, as itwould be in a state of actual paralysis. Fibrillaryflickering. Deliriumcord
. Medical diagnosis for the student and practitioner. icientauricular impulses to contraction. Pulsus irregularis perpetuus or delirium cordis taken over auricles. (After Thos. Lewis.) rapid, irregular and unequal contractions which are nevertheless, in toto,sufficient in many instances to maintain a circulation of some effectivenessover long periods. The auricle itself is meanwhile dilated in the diastolic position and is asutterly unable to maintain an efficient contraction of its own musculature, as itwould be in a state of actual paralysis. Fibrillaryflickering. Deliriumcordis. Blocking and unregulated escape. 552 MEDICAL DIAGNOSIS Polygram andelectro-cardiogram. As a result the normal presystolic venous pulse (represented by thea wave of the polygram or P wave of the normal electrocardiogram) isfaint, lacking, or substituted by a systolic wave in the jugulars, the feebleauricular nickering may be revealed as an undulating line in the polygraph] ctracing, and in the electrocardiogram by a complex in which the auricular. Fig. 254.—Auricular fibrillation; right ventricular extrasystoles. Auricular fibril-lation (f). Right ventricular extrasystoles (Ex). Pulsus bigeminus was evident inthe rhythmic pairing of a normal beat with an extrasystole. Lead I. Time Y^ sec.(R. Edwin Morris.) (presystolic) P wave is absent and represented only by this rippling un-dulation and a hurried, irregularly spaced and unequal ventricular complex(QRS).* If in a case of auricular fibrillation the bundle of His {atrioventricularconduction bundle) be normal, the heart rate is doubled or trebled, though theventricular contractions are haphazard, the pauses of varying length and s ff$ #**f f f,:--f Fig. 255.—Auricular fibrillation. (R. Edwin Morris.) the beats unequal. If, however, the conduction bundle is diseased, a blockmay be evident and the pulse may drop to 40 or less per minute. In-all pulses of less than double thenormal rate and showing the othercharacteristics o
Size: 2717px × 920px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectdiagnos, bookyear1922
