EVALUATION OF THE STATE OF CENTRAL HEMODYNAMICS AND EXTERNAL RESPIRATION IN PARTURIENT WOMEN AT DIFFERENT PERIODS OF DELIVERY ON THE BACKGROUND OF EPIDURAL ANALGESIA

Abstract

Aim. To study the state of central hemodynamics and external respiration in women in labor at different periods of delivery during epidural analgesia. Material and methods. The state of central hemodynamics and external respiration was studied in 43 parturient women initially and during the labor under the epidural analgesia. The parameters were studied at admission - stage 1; after epidural analgesia in the 1st period of labor - stage 2; in the 2nd period of childbirth - stage 3. Puncture and catheterization of the epidural space were performed according to the generally accepted methodology at the level of T12 - L1, L1 - L2 or L2 - L3 depending on the indications for prolonged epidural analgesia. A solution of ropivacaine 0.2% was used as a local anesthetic. Results and discussion. An increased mean arterial pressure, tachycardia, decreased stroke volume and increased total peripheral vascular resistance characterize the initial state of central hemodynamics. The state of the external respiration shows a decrease in tidal volume and vital capacity of the lungs, an increase in respiratory rate and increase of the minute and alveolar ventilation. Against the background of epidural analgesia, the changes in the central hemodynamics and external respiration listed above get normalized. Conclusion. Epidural analgesia provides adequate pain relief at the first and second stages of labor.