抄録
Electrocardiographic observations in 310 cases of arrhythmia absoluta showed the following results : 1) In 10, 233 cases of electrocardiographic examination, there were 290 cases of auricular fibrillation (2.8%), and 20 cases of auricular flutter (0.7%).2) The f waves or F wave was observed the most visibly in 216 cases in lead V1, and in 31 cases in lead a VF.3) The formation of f wave was related with associated diseases, and not with the duration of auricular fibrillation, but an irregular rugged form of f wave was found more often in arteriosclerotic or hypertensive heart disease as compared with mitral valvular disease.4) ff interval of auricular fibrillation was 0.10 to 0.15 seconds in 83% of the cases.5) There were 119 cases with abnormal ST segment in chronic auricular fibrillation (48%), and 41 cases of paroxysmal auricular fibrillation (56%), and 11 cases of auricular flutter (55%).6) Abnormal T wave was found in 220 cases of chronic auricular fibrillation (88%), in 29 cases of paroxysmal auricular fibrillation (71%) and in 19 cases of auricular flutter (95%).7) Complication of ventricular premature beats was observed in 23 cases (7.4%) of these arrhythmias. There were 2 cases of auricular flutter complicated with complete AV block.8) Diagnostic criteria of presence of ventricular premature beats in auricular fibrillation was based mainly upon its pause and not upon its coupling.9) When auricular fibrillation converted to sinus rhythm, the cases showed increased voltage, width of P wave, and prolongation of PQ interval, especially in cases of chronic auricular fibrillation.
