The feasibility of underwater computerised strain gauge plethysmography and the effects of hydrostatic pressure on the leg venous haemodynamics
| Autor: | Dimitris Kontothanassis, Sara Oberto, Leonardo Chiodi, Daniele Bissacco, Giorgio Bergamo, Giovanni Mosti, Alberto Caggiati |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Diseases of the circulatory (Cardiovascular) system
medicine.medical_specialty Ejection fraction business.industry Hydrostatic pressure Short Report lcsh:Surgery Venous drainage lcsh:RD1-811 Venous haemodynamics lower limbs veins lcsh:RC666-701 Internal medicine Leg exercise Cardiology medicine hydrostatic pressure Surgery Underwater Cardiology and Cardiovascular Medicine business Venous disease strain gauge plethysmography Strain gauge plethysmography |
| Zdroj: | EJVES Vascular Forum, Vol 47, Iss, Pp 60-62 (2020) EJVES Vascular Forum |
| Popis: | Background Strain gauge plethysmography (SGP) is employed to evaluate venous drainage of the lower leg. Methods In this study, SGP was used to evaluate the effects of the hydrostatic pressure (HP) of water on venous volume (VV), expelled volume, and ejection fraction (EF) in 22 healthy legs before and during immersion in water. Results HP reduced VV by 100% and even more during underwater (UW) exercise, making calculation of the UW EF possible. Discussion UW SGP is feasible and indicates that HP improves venous haemodynamics. This study suggests that including UW leg exercise in the rehabilitation protocols of patients with chronic venous disease may be useful. Keywords Strain gauge plethysmography, Underwater compression, Underwater ejection fraction, Underwater venous volume. Highlights • Hydrostatic pressure reduces the volume of the leg. • Hydrostatic pressure increases venous emptying from the leg. • In underwater conditions, calf pumping further decreases leg volume. |
| Databáze: | OpenAIRE |
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