[Detection of arrhythmias in patients with ischemic heart disease using different methods of prolonged ECG recording on a magnetic tape]. / Raspoznavanie aritmii u bol'nykh ishemicheskoi bolezn'iu serdtsa s pomoshch'iu razlichnykh metodov dlitel'noi registratsii EKG na magnitnuiu lentu.

Prolonged ECG recording on magnetic tape was performed in 327 coronary patients. In 187 out of them, continuous 24-hour ECG recording (Holter's monitoring) was performed and in 178 subjects, intermittent recording (for 14 s every 15 min) was conducted over 24 hours. In 38 patients, both methods were used. Various heart rhythm irregularities were determined by these methods in 92.1 and 86.8% of the patients, respectively, with the nature and frequency of arrhythmias in both groups displaying basically the similar pattern. The employment of both methods made it possible to detect in a considerable proportion of patients cardiac rhythm disturbances which had not been elucidated in the previous clinical and ECG examinations. The method of Holter's monitoring proved to be more informative in comparison with intermittent ECG recording, i.e. it was effective in determining the precise number and duration of arrhythmia episodes occurring over the period of 24 hours.

[Nonparoxysmal tachycardia and accelerated ectopic rhythms]. / Neparoksizmal'naia takhikardiia i uskorennye ektopicheskie ritmy.

Ectopic rhythms with impulse frequency of 60-90 per minute are referred to as "accelerated"; those with the frequency of 91-130 impulses per minute are termed "nonparoxysmal tachycardia". Forty patients (27 with nonparoxysmal tachycardia and 13 with accelerated ectopic rhythms) were under observation. Accelerated rhythms were nearly always free of clinical symptoms and did not require an anti-arrhythmia treatment. Nonparoxysmal supraventricular and ventricular tachycardia was usually accompanied by aggravation of the patient's condition. Nonparoxysmal tachycardia turned to paroxysmal one or vice versa in 7 patients. Cordarone, beta-adrenergic agents and isoptin were particularly effective in the treatment of nonparoxysmal supraventricular tachycardia, while ethmosine, cordaron and rhythmodan proved most effective against ventricular arrhythmia.

[Detection of heart rhythm disorders by ECG autotransmission via telephone]. / Vyiavlenie narushenii ritma serdtsa metodom autotransliatsii EKG po telefonu.

The method of patient's own telephone transmission of his or her ECG was used for the diagnosis of arrhythmias in 70 patients with a history of heart rhythm disorders. Various arrhythmias were diagnosed, using this method, in 91.4% of the patients. Repeated conventional ECG recordings detected arrhythmias in 54.3% of the patients only over the entire hospital stay time. A comparison of ECG telephone autotransmission and intermittent ECG tape-recording by the Cardiocassette device showed identical rhythm disorders in 91.3% of the cases, while bicycle ergometry proved less informative for the diagnosis of arrhythmias as compared to ECG telephone transmission. The latter method may be useful in monitoring patients with heart rhythm disorders, particularly at the outpatient stage of treatment. It allows antiarrhythmic therapy to be administered as soon as arrhythmia is detected which is an advantage over ECG tape-recording.