Saturday, December 17, 2016

The measurement of cutaneous blood flow in healthy volunteers subjected to physical exercise with ultrasound Doppler imaging and laser Doppler flowmetry.

The measurement of cutaneous blood flow in healthy volunteers subjected to physical exercise with ultrasound Doppler imaging and laser Doppler flowmetry.

Clin Hemorheol Microcirc. 2016 Dec 14;

Authors: Lenasi H, Poto─Źnik N, Petrishchev N, Papp M, Egorkina A, Girina M, Skedina M, Kovaleva A


We evaluated blood flow parameters in the cutaneous with the help of high-frequency ultrasound Doppler flowmetry (UDF) and laser Doppler fluxmetry (LDF) after submaximal physical exercises on cycloergometer. During investigation by means of UDF medium linear speed of blood flow was estimated in absolute values (Vam) in cm/s. The level of perfusion in the volume of tissue in a unit of time was registered in perfusion units (PU) with the help of LDF. Comparison of values of Vam and PU was made every 20 s during recovery period of every patient. Three types of blood flow reaction to physical exercises in the system of microcirculation were recorded during investigation: blood flow with occasional paroxysm, pulsatile blood flow and shunting blood flow. In the first type of reaction time of registration and direction of changes of Vam and PU values coincided in 77.7%. Degree of manifestation of these changes demonstrated high correlation (r = 0.77; p = 0.000032). In the second type was 85.0%, degree of manifestation showed moderate correlation (r = 0.66; p = 0.001495). In the third type correlation was moderate too (r = 0.53, p = 0.00235). In the process of investigation a good comparability of results received during UDF and LDF methods.

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