Comparison of three pressure monitors used to measure interface pressure under compression bandages

2019 ◽  
Vol 35 (4) ◽  
pp. 262-267 ◽  
Author(s):  
Junjie Ning ◽  
John Fish ◽  
Felix Trinh ◽  
Jihad Abbas ◽  
Andrew Seiwert ◽  
...  
Keyword(s):  
Measurement Accuracy ◽  
Compression Therapy ◽  
Separate Experiment ◽  
Interface Pressure ◽  
Limits Of Agreement ◽  
Pressure Monitor ◽  
Compression Bandages ◽  
Measuring Devices ◽  
The Mean ◽  
User Friendly

Background Measuring the interface pressure produced by compression therapy devices is essential for research and clinical practice. New user-friendly measuring devices, such as Smart Sleeve Pressure Monitor (SSPM) and Juzo Pressure Monitor (JPM) allow longitudinal pressure measurement. However, their accuracy and agreement with well-established usage of the PicoPress (PP) are unknown. The aim of this study is to investigate measurement accuracy of PP, SSPM, and JPM. Methods The three devices were tested in 10 healthy volunteers by applying incrementally increasing pressure from 20 mm Hg to 50 mm Hg using a calibrated sphygmomanometer cuff. The linearity of the response and measurement accuracy were compared among the three devices. In a separate experiment, the three devices were compared by simultaneously recording the interface pressure under bandages immediately after bandaging and after 4 h of wearing the bandage. Results PP had the best performance with the reference of sphygmomanometer, while JPM had better linearity and accuracy than SSPM. The mean difference in the interface pressure under bandages was +13.36 mm Hg between SSPM and PP, and +0.50 mm Hg between JPM and PP. The 95% limits of agreement were −13.92 and +40.64 mm Hg, and −19.83 and +20.84 mm Hg, respectively. Conclusions JPM showed better agreement with both sphygmomanometer and PP compared to SSPM. JPM is a reasonable alternative for monitoring interface pressure continuously.

Compression for the management of venous leg ulcers: which material do we have?

2014 ◽  
Vol 29 (1_suppl) ◽  
pp. 140-145 ◽  
Author(s):  
Hugo Partsch
Keyword(s):  
Time Pressure ◽  
Wide Spectrum ◽  
Compression Therapy ◽  
Venous Hypertension ◽  
Leg Ulcers ◽  
Interface Pressure ◽  
Compression Stockings ◽  
Venous Leg Ulcers ◽  
Compression Bandages ◽  
Hybrid Devices

Compression therapy is the most important basic treatment modality in venous leg ulcers. The review focusses on the materials which are used: 1. Compression bandages, 2. Compression stockings, 3. Self-adjustable Velcro-devices, 4. Compression pumps, 5. Hybrid devices. Compression bandages, usually applied by trained staff, provide a wide spectrum of materials with different elastic properties. To make bandaging easier, safer and more effective, most modern bandages combine different material components. Self-management of venous ulcers has become feasible by introducing double compression stockings (“ulcer kits”) and self-adjustable Velcro devices. Compression pumps can be used as adjunctive measures, especially for patients with restricted mobility. The combination of sustained and intermittent compression (“hybrid device”) is a promising new tool. The interface pressure corresponding to the dosage of compression therapy determines the hemodynamic efficacy of each device. In order to reduce ambulatory venous hypertension compression pressures of more than 50 mm Hg in the upright position are desirable. At the same time pressure should be lower in the resting position in order to be tolerated. This prerequisite may be fulfilled by using inelastic, short stretch material including multicomponent bandages and cohesive surfaces, all characterized by high stiffness. Such materials do not give way when calf muscles contract during walking which leads to high peaks of interface pressure (“massaging effect”).

Anpressdruck über sechs Wochen eines speziell für die Behandlung des venösen Ulkus entwickelten Kompressionsstrumpfes

VASA ◽  
2003 ◽  
Vol 32 (2) ◽  
pp. 87-90 ◽  
Author(s):  
Jünger ◽  
Häfner
Keyword(s):  
Compression Therapy ◽  
Pressure Profile ◽  
Mean Difference ◽  
Maximum Pressure ◽  
Compression Stocking ◽  
Class Iii ◽  
Interface Pressure ◽  
Working Pressure ◽  
Venous Ulcers ◽  
Compression Bandages

Background: The most important component in the treatment of venous ulcers is compression therapy. The function of compression therapy is the pressure exterted on the extrafascial and intrafascial venous system. Therefore the interface pressure of specially designed compressions stockings for the treatment of venous ulcers are in the focus of interest. Patients and methods: We examined 20 patients (6 men and 14 women) with chronic venous insufficiency in CEAP stages CS0-4EPAS1-3PR. Interface pressure was measured under the Venotrain® Ulcertec over an observation period of six weeks with piezoresistance sensors at four different sites on the lower leg and with the patient in different body positions. Results:Resting pressure supine at the ankle corresponded to compression class III and was constant over the period of six weeks (mean difference 2.8 SD 15.3 mmHg, p = 0.49). Working pressure explained as the quotient of maximum pressure during tiptoing/resting pressure in standing position was initially at the ankle 1.70 SD 0.44 and after 6 weeks 1.44 SD 0.29 (mean difference 0.27 SD 0.42, p < 0.03). Conclusions: The compression stocking maintained a therapeutically effective pressure profile over a period of six weeks. Working interface pressure was comparable to that of short-stretch compression bandages applied by an experienced bandager immediately after application.

scholarly journals Study of Three Interface Pressure Measurement Systems Used in the Treatment of Venous Disease

Sensors ◽  
2020 ◽  
Vol 20 (20) ◽  
pp. 5777
Author(s):  
Gayani K. Nandasiri ◽  
Arash M. Shahidi ◽  
Tilak Dias
Keyword(s):  
Pressure Measurement ◽  
Pressure Sensors ◽  
Compression Therapy ◽  
Pressure Profile ◽  
Chronic Venous Disease ◽  
Venous Disease ◽  
Interface Pressure ◽  
Measurement Systems ◽  
Compression Bandages ◽  
Pressure Profiles

The aim of the publication is to report the accuracy, repeatability and the linearity of three commercially available interface pressure measurement systems employed in the treatment of venous disease. The advances in the treatment and management of chronic venous disease by compression therapy have led to considerable research interest in interface pressure measurement systems capable of measuring low-pressure ranges (10–60 mmHg). The application of a graduated pressure profile is key for the treatment of chronic venous disease which is achieved by using compression bandages or stockings; the required pressure profiles are defined in standards (BSI, RAL-GZ, or AFNOR) for different conditions. However, achieving the recommended pressure levels and its accuracy is still deemed to be a challenge. Thus, it is vital to choose a suitable pressure measurement system with high accuracy of interface pressure. The authors investigated the sensing performance of three commercially available different pressure sensors: two pneumatic based (AMI and PicoPress®) and one piezoresistive (FlexiForce®) pressure sensors, with extensive experimental work on their performance in terms of linearity, repeatability, and accuracy. Both pneumatic based pressure measurement systems have shown higher accuracy in comparison to the flexible piezoresistive pressure sensors.

The accuracy and precision of interface pressure measuring devices: A systematic review

2021 ◽  
pp. 026835552110080
Author(s):  
Orsolya Kokai ◽  
Sharon L Kilbreath ◽  
Patrick McLaughlin ◽  
Elizabeth S Dylke
Keyword(s):  
Systematic Review ◽  
Applied Pressure ◽  
Calibration Method ◽  
Interface Pressure ◽  
Measuring Devices ◽  
Pressure Application ◽  
Accuracy And Precision ◽  
Major Factors ◽  
No Sensor

Introduction Interface pressure measuring devices are used to assess the pressures exerted by compression. Their performance, however, has not been considered as a contributing factor to reported inconsistences in the application of compression. A systematic review was undertaken to investigate the performance of commercially available devices used to measure interface pressure. Methods Six databases were searched identifying 17 devices, grouped into five sensor categories. Results A range of methodologies assessed the devices’ accuracy and precision, including method of pressure application, device calibration and type of surface used. No sensor category outperformed the others, however some individual sensors showed higher accuracy and/or precision compared to others. Two major factors influenced the performance of a number of sensors: the amount of applied pressure and the calibration method used. Conclusion Inconsistences in the application of compression may reflect, in part, issues related to accuracy and precision of the devices used to assess compression.

Detection and Analysis of Rats’ Bioelectromagnetic Signal

2014 ◽  
Vol 536-537 ◽  
pp. 13-17
Author(s):  
Hong Long Cao ◽  
Fen Ju Qin ◽  
Xue Guan Liu ◽  
He Ming Zhao
Keyword(s):  
Standard Deviation ◽  
Automatic System ◽  
Measurement Method ◽  
Measurement Accuracy ◽  
Biological Activities ◽  
Measurement Data ◽  
Measured Data ◽  
The Mean ◽  
Frequency Window ◽  
Window Effects

In this paper, we designed an automatic system and automatic test software, and they can carry out Kunming rats bioelectromagnetic measurement in standard status and anesthesia automatically in anechoic chamber where the electromagnetic field outside is shielded, the reflection wave is absorbed, and the measurement accuracy will be improved. We get a great number of measurement data with frequency-sweep measurement method. The mean and standard deviation of amplitudes vs. frequencies is calculated and analyzed. The results show the measurement method is feasible. We have plotted the means of measured data as multiple sets of Y values in a series of bars with standard deviations bars included and distributed in the frequency axis of X. It is found that the fluctuation of the mean and standard deviation in some frequencies is not evident which may explain frequency window effects, while in other frequencies, such a fluctuation can be obviously observed, which may suggest that bioelectromagnetic signal is influenced by biological activities (standard and anaesthesia status) in these frequency points.

scholarly journals Postural differences in the immediate effects of active exercise with compression therapy on lower limb lymphedema

2021 ◽  
Author(s):  
Kiriko Abe ◽  
Tetsuya Tsuji ◽  
Asako Oka ◽  
Junichi Shoji ◽  
Michiyo Kamisako ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Supine Position ◽  
Lower Limb ◽  
Gynecological Cancer ◽  
Compression Therapy ◽  
Bicycle Ergometer ◽  
Therapeutic Effects ◽  
Clinical Trial Registration ◽  
Mixed Effect ◽  
Compression Bandages

Abstract Purpose Although regarded as an important treatment for lymphedema, the therapeutic effects of active exercise with compression therapy (AECT) are supported by little evidence. The purpose of this study was to determine the relative benefits of AECT with different postures for patients with lower limb lymphedema (LLL). Methods Eighteen women with LLL secondary to surgical treatment of gynecological cancer, completed (1) AECT in a seated position (seated AECT), (2) AECT in a supine position (supine AECT), and (3) compression-only therapy in a supine position (CT) in this randomized, controlled, crossover trial. AECT was performed on a bicycle ergometer while wearing elastic compression bandages. Each intervention was performed for 15 min, and the three conditions were separated by a 1-week washout period. Lower-limb volumes were evaluated using a PerometerTM sensor (Pero-system, Wuppertal, Germany), and symptom severity was assessed before and after each intervention using a visual analog scale (pain, heaviness) and palpation (pitting, stiffness). The effects of the interventions were estimated using linear mixed-effect models. Results The magnitude of limb volume decreases differed significantly among the interventions, with a greater decrease after supine AECT than after CT. Pre-intervention pitting severity and skin stiffness were significantly correlated with the magnitude of volume decrease after all interventions and after AECT in the supine position, respectively. Conclusions Supine AECT using a bicycle ergometer has marked immediate effects to decrease the fluid volume of severe LLL. Clinical trial registration UMIN clinical trial registry (UMIN-CTR; ID000020129) by CONSORT 2010, TRN R000023253, December 9, 2015

Impact of multilayered compression bandages on sub-bandage interface pressure: a model

2011 ◽  
Vol 26 (2) ◽  
pp. 75-83 ◽  
Author(s):  
J Al Khaburi ◽  
E A Nelson ◽  
J Hutchinson ◽  
A A Dehghani-Sanij
Keyword(s):  
Mathematical Model ◽  
Thick Wall ◽  
Compression Bandage ◽  
Leg Ulcers ◽  
Interface Pressure ◽  
Venous Leg Ulcers ◽  
Compression Bandages ◽  
Thick Cylinder ◽  
The Difference ◽  
Interface Pressures

Background Multi-component medical compression bandages are widely used to treat venous leg ulcers. The sub-bandage interface pressures induced by individual components of the multi-component compression bandage systems are not always simply additive. Current models to explain compression bandage performance do not take account of the increase in leg circumference when each bandage is applied, and this may account for the difference between predicted and actual pressures. Objective To calculate the interface pressure when a multi-component compression bandage system is applied to a leg. Method Use thick wall cylinder theory to estimate the sub-bandage pressure over the leg when a multi-component compression bandage is applied to a leg. Results A mathematical model was developed based on thick cylinder theory to include bandage thickness in the calculation of the interface pressure in multi-component compression systems. In multi-component compression systems, the interface pressure corresponds to the sum of the pressures applied by individual bandage layers. However, the change in the limb diameter caused by additional bandage layers should be considered in the calculation. Adding the interface pressure produced by single components without considering the bandage thickness will result in an overestimate of the overall interface pressure produced by the multi-component compression systems. At the ankle (circumference 25 cm) this error can be 19.2% or even more in the case of four components bandaging systems. Conclusion Bandage thickness should be considered when calculating the pressure applied using multi-component compression systems.

scholarly journals Contribution of textile technology to the development of modern compression bandages

2007 ◽  
Vol 13 (2) ◽  
pp. 88-102 ◽  
Author(s):  
Svetlana Milosavljevic ◽  
Petar Skundric
Keyword(s):  
Compression Therapy ◽  
Lower Limbs ◽  
Venous Disease ◽  
Clinical Effects ◽  
Textile Materials ◽  
Compression Bandages ◽  
Venous Diseases ◽  
Textile Technology ◽  
Key Factor ◽  
Application Techniques

Although compression therapy is a key factor in the successful treatment of some circulatory problems in lower limbs, this form of therapy includes some risks if used inappropriately. Based on deliberate application of pressure to a lower limb, using a variety of textile materials, elastic or rigid, in order to produce a desired clinical effects, modern compression therapy presents a good sample of successful penetration of textile technology into the phlebology field of medicine. However, although compression therapy has been in use for over 150 years, there exists a low awareness among practitioners and patients on product usage, application techniques and benefits of appropriate selection of bandages for determined types of leg venous diseases. Also, not all manufacturers of compression textile materials seem to be conscious of end - users' needs. Simultaneously, impressive developments in the field of elastan fibers and modern knitting and weaving technologies, offer chances for realization of completely new types of compression bandages, capable of making an important contribution to the management of venous disease. In this review, starting from the brief account of pathogenesis and the presentation of compression therapy principle, an account of the contribution of all sectors in the textile technological chain to a modern compression therapy is given.

scholarly journals The Physiological Effects of IPAD Digital Games on Children with Autism

2017 ◽  
Vol 5 (2) ◽  
Author(s):  
Nur Zakiah Mohd Saat ◽  
Najwa Suhaili Md Zin ◽  
Sazlina Kamaralzaman
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Children With Autism ◽  
Cross Sectional Study ◽  
Breathing Rate ◽  
Blood Pressure Monitor ◽  
Pressure Monitor ◽  
Cross Sectional ◽  
Strategy Games ◽  
The Mean

Background: Previous studies found that the use of an iPad® in intervention programmes benefited the skills of daily living of children with autism. The purpose of the study was to determine the physiological changes in children while playing action and strategy games on an iPad. Methodology: A cross-sectional study was conducted using Powerlab 24/6T, a blood pressure monitor, respiratory belt, and finger pulse transducer. The children were asked to play two types of game. The duration for each game was 10 minutes. The measurement of blood pressure - both systolic and diastolic, heart rate and breathing rate were taken at three consecutive times (before, during and after each game). The inclusion criteria are children aged 7 to 12 years old who have been diagnosed with a mild type of autism (Pervasive developmental disorder). The exclusion criteria were children who had co-morbidities such as epilepsy, migraine, heart, and lung problems, depression, physical disabilities and visual impairments.  Results: Nineteen children with autism participated in this study. The result indicated that the mean systolic and diastolic blood pressures increased before and after playing strategy games and action games. However, compared to pre-play values, the mean heart rate and breathing rate decreased both during and after playing both types of game. Meanwhile, there was significant mean difference for breathing rate for both types of game (p<0.05). Conclusion: Playing strategy and action games did not affect the measured physiological parameters of children with autism. 

Effect of bandage thickness on interface pressure applied by compression bandages

2012 ◽  
Vol 34 (3) ◽  
pp. 378-385 ◽  
Author(s):  
Jawad Al Khaburi ◽  
Abbas A. Dehghani-Sanij ◽  
E. Andrea Nelson ◽  
Jerry Hutchinson
Keyword(s):  
Interface Pressure ◽  
Compression Bandages
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