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Light reflection rheography: a simple method of assessing lower limb venous filling.
J R Coll Surg Edinb. 1994 Apr; 39(2):89-92.JR

Abstract

Light reflection rheography (LRR) has been developed as a simple, quick and non-invasive test of venous function which reproduces the haemodynamic parameters of venous pressure measurements by recording changes in dermal blood content of the lower limb during exercise. It uses the same principles as photoplethysmography (PPG) but is simpler to use in a clinical context. To assess the comparability of LRR, changes in ambulatory venous pressure measurements were compared to simultaneous recordings of LRR in 40 limbs of 20 individuals with venous stasis during and after a standard exercise. One hundred and twenty paired observations were made with an excellent correlation between venous refill times (VRT) recorded by the two methods (r = 0.85, P < 0.01). There was no significant correlation between exercise induced changes in venous pressure (delta P) and light reflection (delta LR) as measures of venous emptying. LRR also demonstrated differences in VRT and delta LR of the limbs of normal subjects and those with signs of venous stasis (varicose veins) (P < 0.0001). Light reflection rheography is thus a simple accurate test of venous function which may be of value in both the pre- and postoperative assessment of venous function.

Authors+Show Affiliations

Williams PM
Department of Surgery, Leicester General Hospital.
Barrie WW
No affiliation info available
Donnelly PK
No affiliation info available

MeSH

AdultAgedExerciseFemaleHumansLightMaleMiddle AgedPlethysmography, ImpedanceRegional Blood FlowReproducibility of ResultsVaricose VeinsVenous InsufficiencyVenous Pressure

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article

Language

eng

PubMed ID

7520076

Citation

Williams, P M., et al. "Light Reflection Rheography: a Simple Method of Assessing Lower Limb Venous Filling." Journal of the Royal College of Surgeons of Edinburgh, vol. 39, no. 2, 1994, pp. 89-92.
Williams PM, Barrie WW, Donnelly PK. Light reflection rheography: a simple method of assessing lower limb venous filling. J R Coll Surg Edinb. 1994;39(2):89-92.
Williams, P. M., Barrie, W. W., & Donnelly, P. K. (1994). Light reflection rheography: a simple method of assessing lower limb venous filling. Journal of the Royal College of Surgeons of Edinburgh, 39(2), 89-92.
Williams PM, Barrie WW, Donnelly PK. Light Reflection Rheography: a Simple Method of Assessing Lower Limb Venous Filling. J R Coll Surg Edinb. 1994;39(2):89-92. PubMed PMID: 7520076.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Light reflection rheography: a simple method of assessing lower limb venous filling. AU - Williams,P M, AU - Barrie,W W, AU - Donnelly,P K, PY - 1994/4/1/pubmed PY - 1994/4/1/medline PY - 1994/4/1/entrez SP - 89 EP - 92 JF - Journal of the Royal College of Surgeons of Edinburgh JO - J R Coll Surg Edinb VL - 39 IS - 2 N2 - Light reflection rheography (LRR) has been developed as a simple, quick and non-invasive test of venous function which reproduces the haemodynamic parameters of venous pressure measurements by recording changes in dermal blood content of the lower limb during exercise. It uses the same principles as photoplethysmography (PPG) but is simpler to use in a clinical context. To assess the comparability of LRR, changes in ambulatory venous pressure measurements were compared to simultaneous recordings of LRR in 40 limbs of 20 individuals with venous stasis during and after a standard exercise. One hundred and twenty paired observations were made with an excellent correlation between venous refill times (VRT) recorded by the two methods (r = 0.85, P < 0.01). There was no significant correlation between exercise induced changes in venous pressure (delta P) and light reflection (delta LR) as measures of venous emptying. LRR also demonstrated differences in VRT and delta LR of the limbs of normal subjects and those with signs of venous stasis (varicose veins) (P < 0.0001). Light reflection rheography is thus a simple accurate test of venous function which may be of value in both the pre- and postoperative assessment of venous function. SN - 0035-8835 UR - https://www.unboundmedicine.com/medline/citation/7520076/Light_reflection_rheography:_a_simple_method_of_assessing_lower_limb_venous_filling_ L2 - https://medlineplus.gov/varicoseveins.html DB - PRIME DP - Unbound Medicine ER -