Journal of Medical Engineering and Technology最新文献_第10页

Physiological differences in cardiovascular hemodynamics across treadmill and cycle exercise as assessed through impedance cardiography. 通过阻抗心动图评估跑步机和循环运动中心血管血流动力学的生理差异。

Journal of Medical Engineering and Technology Pub Date : 2022-05-01 Epub Date: 2022-02-25 DOI: 10.1080/03091902.2022.2040626

Daniel S Valcicak, Lindsey M Rodriguez, Michael J Saunders, Christopher J Womack, Trent A Hargens

{"title":"Physiological differences in cardiovascular hemodynamics across treadmill and cycle exercise as assessed through impedance cardiography.","authors":"Daniel S Valcicak, Lindsey M Rodriguez, Michael J Saunders, Christopher J Womack, Trent A Hargens","doi":"10.1080/03091902.2022.2040626","DOIUrl":"https://doi.org/10.1080/03091902.2022.2040626","url":null,"abstract":"Impedance cardiography (IC) is a non-invasive method for assessing cardiovascular hemodynamics, and has been utilised during exercise, exclusively on a cycle ergometer. Mode-specific differences in cardiovascular hemodynamics during exercise have previously been identified, but the ability of IC to identify these differences has not been explored. Therefore, we examined the repeatability of cardiovascular hemodynamics within and between exercise modes on the treadmill (TM) and cycle (CY) ergometer. Twenty-one men (age = 21.4 ± 0.5 yr) performed four maximal exercise, two TM and two CY. Within each test, two, five-minute stages were completed corresponding to moderate and vigorous exercise intensities, respectively. Oxygen consumption (VO2) was measured continuously during each test. Hemodynamic measures were obtained via IC, and included cardiac output (CO), heart rate (HR), stroke volume (SV), end diastolic volume (EDV), ejection fraction (EF), and systemic vascular resistance (SVR). Repeated measures ANOVA revealed that within TM exercise, there was a main effect for trial with HR only. There were no main effects for trial within CY exercise. Across exercise modes, there were significant main effects for mode with HR, EDV, and SVR. CY exercise resulted in a higher HR, lower SV and EDV, consistent with previous findings, utilising more criterion and invasive methods. Results suggest that hemodynamics, as assessed by IC, are repeatable within TM and CY exercise. In addition, it appears as though IC is capable of detecting mode-specific differences in hemodynamics, suggesting IC to be a useful assessment tool during exercise.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39959739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A novel synergistic device for joint inflammation - efficacy on ankle sprain cases. 一种新型关节炎症协同治疗装置——对踝关节扭伤的疗效。

Journal of Medical Engineering and Technology Pub Date : 2022-05-01 Epub Date: 2022-02-25 DOI: 10.1080/03091902.2022.2039312

Mayank Shukla, S S Agrawal

{"title":"A novel synergistic device for joint inflammation - efficacy on ankle sprain cases.","authors":"Mayank Shukla, S S Agrawal","doi":"10.1080/03091902.2022.2039312","DOIUrl":"https://doi.org/10.1080/03091902.2022.2039312","url":null,"abstract":"Joint inflammation results from soft-tissue injuries and cartilage damage. PRICE is the standard treatment approach for acute soft tissue injuries like ankle sprain. Electrical stimulation, application of orthotic braces, etc. is also effective for this. In a synergistic device all these components are combined and applied simultaneously. This device was developed for joint inflammation and tested for grade I & II acute ankle joint sprain. To test a synergistic - semirigid device, combining PRICE & electrical stimulation for acute ankle sprains of grades I & II for pain, range of motion and swelling is a case series was the objective. Device was developed using novel concept of synergistic applications of PRICE with electrical stimulation. The joint contour of ankle and specific biomechanical bony surface landmarks were considered. Ethical approval was taken from NTCC committee, AIPT. Recordings were taken from eight patients of acute ankle sprain with - in two days of injury, after getting ethical approval. Elevation to the ankle was provided by keeping the part over the pillow and data was recorded with the help of: 1.VAS scale for pain; 2. Measuring tape; 3. Goniometry. t-test was used to find out the significant difference pre and post the application of device. There was a significant reduction in pain (p = 0.006), edema (p = 0.011), dorsi-flexion (p = 0.015), and plantar flexion (p =0.008). The synegistic device has been effective for acute ankle inflammation - grade I & II ankle sprains in 5 sessions; sufficient for the return of function.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39656753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electromyography pattern-recognition based prosthetic limb control using various machine learning techniques 基于肌电图模式识别的基于各种机器学习技术的假肢控制

Journal of Medical Engineering and Technology Pub Date : 2022-04-20 DOI: 10.1080/03091902.2022.2062064

Sushil Ghildiyal, Geetha Mani, Ruban Nersisson

{"title":"Electromyography pattern-recognition based prosthetic limb control using various machine learning techniques","authors":"Sushil Ghildiyal, Geetha Mani, Ruban Nersisson","doi":"10.1080/03091902.2022.2062064","DOIUrl":"https://doi.org/10.1080/03091902.2022.2062064","url":null,"abstract":"Abstract People who have lost their limbs to amputation and neurological disorders confront this loss every morning. As per the literature review, nearly 30% of the Indian population suffered from upper extremity amputation. As a coping-up measure, a force-controlled prosthetic limb has been developed to improve their self-reliance, quality of lifestyle and mental strength. The current prosthetic limb operation is done by residual muscle contraction, which contributes to the activation of the sensor and the motor. But there are some cons, the amputee does not know how much pressure needs to be exerted for holding various objects. Also, the amputee still has to undergo the surgical procedure. However, this paper proposes a way to predict the force which is needed to regulate the voltage for the servomotors using different Machine Learning (ML) regression approaches. Support Vector Regressor (SVR), Linear Regression and Random Forest models have been used to predict that force requirement. After comparing the results, the Random Forest model gave a highly accurate prediction of the force needed to control the voltage for the DC servomotors","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41600488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

News and product update 新闻和产品更新

Journal of Medical Engineering and Technology Pub Date : 2022-04-19 DOI: 10.1080/03091902.2022.2057073

引用次数: 0

Influence of wearing masks on exhaled air aerodynamics. 戴口罩对呼出空气动力学的影响。

Journal of Medical Engineering and Technology Pub Date : 2022-04-01 Epub Date: 2022-02-18 DOI: 10.1080/03091902.2022.2026507

Jens Kerl, Amayu W Gena, Hayder Alsaad, Conrad Voelker, Dominic Dellweg

{"title":"Influence of wearing masks on exhaled air aerodynamics.","authors":"Jens Kerl, Amayu W Gena, Hayder Alsaad, Conrad Voelker, Dominic Dellweg","doi":"10.1080/03091902.2022.2026507","DOIUrl":"https://doi.org/10.1080/03091902.2022.2026507","url":null,"abstract":"Since aerosol inhalation is the most common mechanism for COVID-19 infection, the respiratory protective devices (RPDs) have the highest importance in personal protection. The aim of this study was to assess the efficiency of 10 different RPDs in shortening the travelling distance of exhaled air by range measurement using the schlieren imaging technique. When a RPD is worn by a person resting in a seated position, the expired air does not exceed the human convective boundary layer (CBL). Instead, the CBL lifts the expired aerosols vertically up. Thus, they have a prolonged travelling time in the surrounding air and become less harmful by several mechanisms of virus content decay. Coughing as well as expiration valves can cause far reaching expiration air clouds that cross horizontally the human CBL by opening leakage airway corridors into different directions. Measured by the range of expired air an FFP2 mask provided high security under all conditions tested. A non-vented full-face mask with two viral filters performed even better because of its airtight fit and the excellent filtering capacity of the viral filters during inspiration and expiration, even during cough manoeuvres.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39640814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A new perspective of aroma face mask on COVID-19 pandemic. 新型冠状病毒肺炎疫情防控新视角

Journal of Medical Engineering and Technology Pub Date : 2022-04-01 Epub Date: 2022-02-03 DOI: 10.1080/03091902.2022.2026501

Fahimeh Irandoust, Salome Dini

{"title":"A new perspective of aroma face mask on COVID-19 pandemic.","authors":"Fahimeh Irandoust, Salome Dini","doi":"10.1080/03091902.2022.2026501","DOIUrl":"https://doi.org/10.1080/03091902.2022.2026501","url":null,"abstract":"In times of the COVID-19 pandemic, wearing face masks is strongly recommended as a public health measure to stop the spread of the Sars Coronavirus. However, there are still people who ignore using this effective protective tool due to the lack of comfortable face masks on the market. Therefore, in the current study, we assessed commercially available face masks namely N95 masks, surgical masks, and cloth masks in order to find out their weakness. In addition, the identification needs of people from a face mask were collected by an online questionnaire. According to the information obtained; we achieved key factors required to design a new type of face mask using the Computer-Aided Design (CAD) and the final design was printed. Moreover, the long-term use of herbs in Iranian Traditional Medicine persuaded us to add a humidifier containing aromatic plants essential oils such as Eucalyptus globules Labill. and Rosa damascene Mill. with scientifically proven health benefits such as pain reliever, relaxing properties and antimicrobial activities. We are expected that these aromas would be an effective way to eliminate the problems of individuals suffering from air pollutants, respiratory disorders, and COVID which leads to encouraging more people to use face masks during pandemics or air pollution.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39585655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Signal processing techniques applied to impedance cardiography ICG signals - a review. 应用于阻抗心电图ICG信号的信号处理技术综述。

Journal of Medical Engineering and Technology Pub Date : 2022-04-01 Epub Date: 2022-01-18 DOI: 10.1080/03091902.2022.2026508

Souhir Chabchoub, Sofienne Mansouri, Ridha Ben Salah

{"title":"Signal processing techniques applied to impedance cardiography ICG signals - a review.","authors":"Souhir Chabchoub, Sofienne Mansouri, Ridha Ben Salah","doi":"10.1080/03091902.2022.2026508","DOIUrl":"https://doi.org/10.1080/03091902.2022.2026508","url":null,"abstract":"Over the last decade, Computer-Aided Diagnosis (CAD) systems have been provided significant research focus by researchers. CAD systems have been developed in order to minimise visual errors, to compensate manual interpretation, and to help medical staff to take decisions swiftly. These systems have been considered as powerful tools for a reliable, automatic, and low-cost monitoring and diagnosis. CAD systems are based on analysis and classification of several physiological signals for detecting and assessing different diseases related to the corresponding organ. The implementation of these systems requires the application of several advanced signal processing techniques. Specifically, in cardiology, CAD systems have achieved promising results in providing an accurate and rapid detection of cardiovascular diseases (CVDs). Particularly, the number of works on signal processing field for impedance cardiography (ICG) signals starts to grow slowly in recent years. This paper presents a review study of signal processing techniques applied to the ICG signal for the denoising, the analysis, the classification and the characterisation purposes. This review is intended to provide researchers with a broad overview of the currently used signal processing techniques for ICG signal analysis, as well as to improve future research by applying other recent advanced methods.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39829442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Design and development of a smart blind walking stick using machine learning 基于机器学习的智能盲人手杖的设计与开发

Journal of Medical Engineering and Technology Pub Date : 2022-04-01 DOI: 10.1080/03091902.2022.2043475

Vishal Vinod Hingorani, Debanik Mukherjee, Kritika Sharma, Geetha Mani, M. M, Albert Alexander Stonier

{"title":"Design and development of a smart blind walking stick using machine learning","authors":"Vishal Vinod Hingorani, Debanik Mukherjee, Kritika Sharma, Geetha Mani, M. M, Albert Alexander Stonier","doi":"10.1080/03091902.2022.2043475","DOIUrl":"https://doi.org/10.1080/03091902.2022.2043475","url":null,"abstract":"Abstract Visually impaired people are often subjugated under extreme circumstances even in their day-to-day life. The daily requirements of a common man appear to be an impediment in their routine life. Simplest of tasks like walking, eating, bathing, conversing and even eating is of utmost difficulty to them. Moreover, with such difficulties their only way-out seems to be dependency on the privileged lot, which further diminishes their confidence in themselves and gradually makes them even more dependent. The conventional devices that are used by visually impaired people include basic walking sticks which fail at the job in hand by not providing adequate stabilisation on rough surfaces and misguiding the users into unfavourable conditions. There is no way for the person to know what the object in front of them is without hitting it with the stick, which could also lead to accidents. To solve these problems, a smart walking stick is developed which not only recognises the object in front of it using Machine Learning (ML) models, but also gives a voice output to alert its user about the particular object thereby limiting the chance of any and all accidents. The concept is realised in hardware and integrated to the walking stick. This helps in stabilisation of phone and to produce better results in object identification. Further an application is developed to alert the user by converting the obtained image into a voice messages.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42551158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In silico modelling of aortic valve implants - predicting in vitro performance using finite element analysis. 主动脉瓣植入物的计算机模拟-用有限元分析预测体外性能。

Journal of Medical Engineering and Technology Pub Date : 2022-04-01 Epub Date: 2022-01-24 DOI: 10.1080/03091902.2022.2026506

Robert Whiting, Elizabeth Sander, Claire Conway, Ted J Vaughan

{"title":"In silico modelling of aortic valve implants - predicting in vitro performance using finite element analysis.","authors":"Robert Whiting, Elizabeth Sander, Claire Conway, Ted J Vaughan","doi":"10.1080/03091902.2022.2026506","DOIUrl":"https://doi.org/10.1080/03091902.2022.2026506","url":null,"abstract":"The competing structural and hemodynamic considerations in valve design generally require a large amount of in vitro hydrodynamic and durability testing during development, often resulting in inefficient \"trial-and-error\" prototyping. While in silico modelling through finite element analysis (FEA) has been widely used to inform valve design by optimising structural performance, few studies have exploited the potential insight FEA could provide into critical hemodynamic performance characteristics of the valve. The objective of this study is to demonstrate the potential of FEA to predict the hydrodynamic performance of tri-leaflet aortic valve implants obtained during development through in vitro testing. Several variations of tri-leaflet aortic valves were designed and manufactured using a synthetic polymer and hydrodynamic testing carried out using a pulsatile flow rig according to ISO 5840, with bulk hydrodynamic parameters measured. In silico models were developed in tandem and suitable surrogate measures were investigated as predictors of the hydrodynamic parameters. Through regression analysis, the in silico parameters of leaflet coaptation area, geometric orifice area and opening pressure were found to be suitable indicators of experimental in vitro hydrodynamic parameters: regurgitant fraction, effective orifice area and transvalvular pressure drop performance, respectively.","PeriodicalId":39637,"journal":{"name":"Journal of Medical Engineering and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39854781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

News and product update. 新闻和产品更新。

Journal of Medical Engineering and Technology Pub Date : 2022-04-01 DOI: 10.1080/03091902.2022.2047324

引用次数: 0