抄録
Electrocardiographic studies were performed on 21 persons of the divers were lived in Taneichi and Rikuchuyagi (Town) of Iwate prefecture.These were classified in 3 groups.In A group, the divers are healthy and working at present.In B group, the divers were suffered from caisson disease recently. (from one week to two weeks after onset).In C group, the divers were suffered from caisson disease in a long term and residual symptoms were seen eminently.The results obtained were as follows : 1. With regard to position type, normal position were found in 14 cases, left type in 6 cases and axis deviation predominated vertical position with clock wise rotation.2. All the case showed normal except a case which showed 0.08 second in P wave. Pulmonal and mitral P were not occurred in all the case.3. No case showed abnormal prolongation of P-Q interval.4. Prolongation of QRS interval were found in one case with bundle branch block. Notching and slurring of QRS were found in one case only.5. The author not observed the prolongation of Q-T interval, low voltage and arched elevation of ST segmant.6. The number of those with isolated low T wave amounted to one case and another one case of peaked T. The elevation and depression of ST segment not observed.7. There were no remarkable arhythmia excepting that some of them indicated the sinus bradycardia (8 cases) and right bundle branch block (one case).8. In precordial lead only one case in B group showed low T. Another one case in C group showed prolongation of the intrinsic factor.
