[The cardiovascular system in liquidators of consequences of the Chernobyl atomic power station accident]. / Sostoianie serdechno-sosudistoi sistemy u likvidatorov posledstvii avarii na ChAES.

Liquidators of consequences of the Chernobyl atomic power station accident were found to have cardiovascular regulatory disorders in the late period. A late pressure reaction of systolic blood pressure to exercise was caused by cardiac rhythm rigidity due to the sick sinus syndrome. High exercise tolerance and delayed ischemia were indicative of diminished total peripheral resistance due to the impaired responsiveness of alpha-adrenoblockers in the arterial vessels and of the development of neurocirculatory dystonia. Cardiovascular functional changes in the liquidators are not attended by the higher morbidity rates of hypertensive disease.

[The functional status of the myocardium in patients with vibration disease from the impact of the local vibration]. / Funktsional'noe sostoianie miokarda u bol'nykh vibratsionnoi bolezn'iu lokal'noi vibratsii.

ECG, echo-CG and poly-CG examination of 61 workers with vibration disease revealed in most subjects hyperkinetic type of blood circulation, reduced variability of cardiac rhythm in orthostatic test and increased weight of left ventricle myocardium in 60.3% of the subjects. The authors consider the changes functional.

[Bioelectric activity of the myocardium and central hemodynamics in patients with vibration disease]. / Bioélektricheskaia aktivnost' miokarda i tsentral'naia gemodinamika u bol'nykh vibratsionnoi bolezn'iu.

Examination in occupational clinic covered 60 male sufferers from vibration disease caused by local vibration (28 patients with I and I-II stages, 26 with II stage, 6 with residual signs). Nearly 36% of examinees demonstrated moderate disorders of bioelectric myocardial activity in left ventricle. Hyperkinetic type of central hemodynamics was diagnosed in 75% of the subjects, hypokinetic one-in 8.3%, eukinetic one-in 16.7%. The hyperkinetic type may promote arterial hypertension during vibration disease.

[Intrahepatic circulation in participants of clean-up after the Chernobyl Atomic Energy Plant accident]. / Vnutripechenochnoe krovoobrashchenie u uchastnikov likvidatsii posledstvii avarii na ChAES v otdalennom periode.

Examination of 42 liquidators of Chernobyl power station accident consequences, which was conducted in 5-6 years after the work in Chernobyl, proved 66.7% of examinees to have hypervolemia of hepatic circulation. These changes are due to hyperkinetic type of central hemodynamics. The data obtained prove absence of sclerotic lesions in liver.

[The central hemodynamics of participants in the cleanup of the sequelae of the accident at the Chernobyl Atomic Electric Power Station 4 years after the accident]. / Sostoianie tsentral'noi gemodinamiki u uchastnikov likvidatsii posledstvii avarii na ChAES cherez 4 goda posle avarii.

Investigations of the central haemodynamics and myocardial contractility in 73 men, who took part in repairing after the Chernobyl accident in 1986, in 4 years after the accident have shown the hyperkinetic type of circulation in 60.2%, eukinetic in 23.2%, hypokinetic in 15.6% of the examinees. Such changes of the central haemodynamics, increased frequency of the hyperkinetic type are due to the regulatory disorders decreasing the vascular tone in the major and minor circles, amplifying the venous return to heart and increasing the myocardial contractility.

[Hypokininemia in chronic bronchitis caused by cotton dust]. / Gipokininemiia pri khronicheskom bronkhite ot vozdeistviia pyli khlopka.

Examination of 102 patients who developed bronchitis due to exposure to cotton dust running a complicated or noncomplicated course recognized a moderate hyperkininemia in 40% of cases (4.46 +/- 0.43 against the normal 2.90 +/- 0.42) and apparent hypokininemia in 60-63% of cases (0.52 +/- 0.03 against 2.90 +/- 0.42). Hypokininemia appeared in association with pathological shifts in external respiration and central hemodynamics. It is an unfavourable factor contributing to formation of occupation complications of chronic bronchitis: pulmonary emphysema, pulmonary hypertension and cor pulmonale.

[Retrospective analysis of disability indices and assessment of expert testimony of work capacity in dust-induced bronchitis]. / Retrospektivnyi analiz pokazatelei invalidnosti i otsenka kachestva ékspertizy trudosposobnosti pri pylevom bronkhite.

The article deals with current issues and quality of the medical labour examinations (MLE) performed by MLE commissions, reveals the reasons accounting for discrepancies in MLE based on the data of the commissions and those of specialized clinics. A clinico-functional examination of 243 in-patient dust bronchitis cases established a late primary diagnosing of dust bronchitis as one of the reasons for invalidism. 3-rd group invalids were mostly workers with lengthy professional background but still before the retirement age, who needed social and labour rehabilitation. The main reason for the discrepancies lies in inadequate examination prior to the MLE commissions decision and prescription of invalidism to the patients with the initial stage of the disease basing on the social criterion.

[Cardiovascular changes based on ECG data in workers involved in the elimination of the sequelae of the accident at the Chernobyl Atomic Electric Power Station]. / Izmeneniia serdechno-sosudistoi sistemy po dannym EKG u rabochikh, uchastvovavshikh v likvidatsii posledstvii avarii na Chernobyl'skoi AES.

122 persons who had participated in the Chernobyl nuclear power station disaster control were passed through ECG examinations, as a result of which susceptibility to bradycardia was revealed. To exclude a marked vagal influence on the myocardium, orthostatic, atropine and ephedrine tests were performed. Weakened reactions to atropine and ephedrine indicated a secondary vagotomy caused by the lowered sensitivity of beta-adrenoreceptors.

[Phenomenon of a complete interventricular (interatrial) block]. / Fenomen polnoi mezhzheludochkovoi (mezhpredserdnoi) blokady.

In 21 cases of separate cardiac cavity excitation (20 of separate ventricular excitation (SVE) and one of separate atrial excitation), 40 right and left QRS complexes were obtained by routine, prolonged and synchronous ECG recording in various standard leads. A differential diagnosis was made between fusion QRS complexes and right and left QRS complexes. Three criteria of fusion ventricular complexes were found to be undiagnostic for right and left ventricular complexes in SVE. SVE has its own electrocardiographic criteria: (1) heterodirectional P waves or QRS complexes separated and unseparated from each other by an isoelectrical interval of less than 0.15 or less than 0.25 s, respectively; (2) in SVE, P-R interval may be no more than 0.06 s shorter than sinus P-R interval; (3) the end vector may be different from or similar to the sinus one. The basis for separate cardiac cavity excitation is functional longitudinal interatrial or interventricular blockade.