CHANGES IN CENTRAL HEMODYNAMICS AFTER LOCAL SKIN COOLING IN FEMALES

Aim: we studied changes in central hemodynamics after localized cold exposure in females aged 17-20 years. Methods: We exposed the skin (hand and foot) of female to water at temperatures 24, 15 and 8 degrees Celsius. SIMONA 111 Integrated Monitoring System was used to assess indicators of preload, myocardial contractility, afterload, left ventricular function and hemodynamic status indicators Results. The hand cooling with water at a temperature of 15 and 8 degrees Celsius decreased inotropy index by 6.3 % (p = 0.012) and 8.2 % (p = 0.007), respectively. Corresponding reductions in myocardial contractility index were 2.5 % (p = 0.033) and 1.5 % (p = 0.010), in myocardial stress coefficient - by 6 % (p < 0.001) and 5.4 % (p = 0.002), respectively), and the cardiac index of the work of the left ventricle - by 7.0 % (p = 0.003) and 8.0 % (p = 0.002). Foot cooling at 24 degrees Celsius decreased myocardial contractility index by 1.5 % (p = 0.031) and myocardial stress coefficient by 7.4 % (p = 0.025)), while exposure to 15 and 8 degrees Celsius (decreased notropy index by 12.1 % (p = 0.002) and by 14.7 % (p = 0.003), myocardial contractility index by 7.6 % (p < 0.001) and 10.2 % (p <0.001), respectively). Cardiac index of the work of the left ventricle decreased by 3.5 % (p = 0.007) following foot exposure to 24 degrees Celsius. Mean blood pressure increased by 4.2 % (p = 0.013) following exposure to 8 degrees Celsius. Conclusions. Local cold exposure leads to a decrease in myocardial contractility and left ventricular function and to an increase in hemodynamic status. The greatest reactivity of the cardiovascular system is stated after local cooling of the foot skin in water at a temperature of 15 and 8 degrees Celsius.

local cooling, hand, foot, cardiovascular system