A STUDY OF THE FEMORAL VEIN PROXIMAL VALVE FUNCTION AND THE INFLUENCE OF VIS A TERGO AND VIS A FRONTE FACTORS TO IT WORK
Objective: A study of the femoral vein proximal valve function and the influence of vis a tergo and vis a fronte factors to it work. Methods: The study has done on 22 volunteers at the age of 18-80 years without signs of chronic venous diseases. It was conducted a comparison of vein diameter on the...
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| Main Authors: | , , , , , , |
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| Format: | Book |
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Avicenna Tajik State Medical University,
2017-04-01T00:00:00Z.
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| Summary: | Objective: A study of the femoral vein proximal valve function and the influence of vis a tergo and vis a fronte factors to it work. Methods: The study has done on 22 volunteers at the age of 18-80 years without signs of chronic venous diseases. It was conducted a comparison of vein diameter on the level of the intercuspidal incisura in patients with the proximal valve work and the absence of it. Results: It was fixed that the functions of the valves in 9 patients, and degree of lumen reduction of significant variation from 35.5% to 55.4%. Functioning of the valves was not detected in 7 patients, however the grade of vein diameter composed from 27% to 62.5%. In patients with presence of cycle functioning valves, it was strictly corresponded to the act of breathing - factor vis a fronte. The 6 patients were examined for the studying the influence of the phases of cardiac cycle to the valve functions, to whom were received the conservative treatment in the department of vascular surgery. Within 2-3 days the valve cycle was detected in all patients as a result of the conducted therapy; it was strictly correlated with breathing and was not synchronized with ECG. To exclude the factor of vis a fronte the examination was performed during breath hold. The functioning of the valves was detected in all patients and closure of the valves occurred strictly following the phase of ventricular systole displayed on ECG; that is not effect of direct factor vis a tergo - the kinetic energy of the blood flow in cardiac ejection but effect of its main part-potential energy of vascular wall deformation. Conclusion: The main mechanism of venous outflow in lower limbs are calm - the direct factor of vis a tergo. The main mechanism of lower limbs are not enough in blood volume expansions in venous system, includes the additional mechanism of venous back out in the following way of vis a fronte, the arteriovenous pump. |
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| Item Description: | 10.25005/2074-0581-2017-19-1-21-25 2074-0581 2959-6327 |