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Rahman Faisal F Clinical Neurocardiology Section, National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), 10 Center Drive MSC-1620, Building 10 Room 5N220, Bethesda, MD, 20892-1620, - - 2014
Chronic autonomic failure syndromes such as Parkinson disease with orthostatic hypotension (PD + OH), multiple system atrophy (MSA), and pure autonomic failure (PAF) typically feature arterial baroreflex failure. Identifying baroreflex-sympathoneural failure from hemodynamic responses to the maneuver usually has been qualitative. We report quantitative methods for evaluating baroreflex-sympathoneural function, based on beat-to-beat ...
Thijssen Dick H J DH 1Liverpool John Moores - - 2014
Introduction. The aim of this study was to examine the contribution of arterial shear to changes in flow mediated dilation (FMD) during sympathetic nervous system activation in healthy humans. Methods. Ten healthy men reported to our laboratory 4 times. Bilateral FMD, shear rate (SR) and catecholamines were examined before/after 10-minutes ...
Lee Rachael R Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK. - - 2014
This tutorial review looks at structural and supramolecular chemistry of molecular solids under extreme conditions, and introduces the instrumentation and facilities that enable single crystal diffraction studies on molecular crystals at both high pressure and low temperature. The equipment used for crystallography under extreme conditions is explored, particularly pressure cells ...
Souza Alexandre Navarro - - 2014
Cranial cruciate ligament rupture (CCLR) is one of the most important stifle injuries and a common cause of lameness in dogs. Our objective was to measure the vertical forces in the pads of Pitbulls with cranial cruciate ligament rupture (CCLR) using a pressure sensitive walkway. A pressure sensitive walkway was ...
Barter Linda S LS Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, CA, - - 2014
To assess agreement between carotid arterial pressure and auricular arterial, thoracic limb Doppler or thoracic limb oscillometric blood pressure measurements. Prospective experimental study. Six adult New Zealand white rabbits. Rabbits were anesthetized with isoflurane in oxygen at 1, 1.5 and 2 MAC on two separate occasions. Catheters in the auricular ...
Meijer Ellen - - 2014
Gait evaluation is difficult in pigs, especially when objective and quantitative data are needed, thus little research has been conducted in this species. There is considerable experience, however, with objective gait analysis in other species, such as horses and dogs. In this study, a pressure mat was used to establish ...
Bura Alessandra A Service de médecine vasculaire, Pôle cardiovasculaire et métabolique, Centre hospitalo-universitaire de Toulouse, Toulouse, France; Université de Toulouse III, Paul Sabatier, Toulouse, - - 2014
Non-revascularizable critical limb ischemia (CLI) is the most severe stage of peripheral arterial disease, with no therapeutic option. Extensive preclinical studies have demonstrated that adipose-derived stroma cell (ASC) transplantation strongly improves revascularization and tissue perfusion in ischemic limbs. This study, named ACellDREAM, is the first phase I trial to evaluate ...
de Castro Marcelo Peduzzi MP Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sport, University of Porto, Porto, Portugal; Porto Biomechanics Laboratory, University of Porto, Porto, Portugal. Electronic address: - - 2014
To describe and compare the plantar pressures, temporal foot roll-over, and ground reaction forces (GRFs) between both limbs of subjects with unilateral transfemoral amputation and with able-bodied participants during walking. We also verify the relevance of a force plate and a pressure plate to discriminate changes in gait parameters of ...
Nelson Tyler Scott TS Georgia Intitute of - - 2014
The ability to quantify collecting vessel function in a minimally invasive fashion is crucial to the study of lymphatic physiology and the role of lymphatic pump function in disease progression. Therefore, we developed a highly sensitive, minimally invasive research platform for quantifying the pumping capacity of collecting lymphatic vessels in ...
Laitman Jeffrey T - - 2013
As mammals evolved, the larynx accrued added importance in new activities such as effectuating intra-abdominal pressure control during the transition from egg-laying to birthing and control of intrathoracic stabilization as movement of the upper limb required rib stabilization during climbing. The proper development of the larynx during the embryonic period ...
Zaleska Marzanna M 1 Medical Research Centre, Polish Academy of Sciences, Department of Surgery and Epigenetics, Central Clinical Hospital , Warsaw, Poland - - 2013
Abstract Pneumatic compression of tissues with lymph stasis is, aside from the manual massage, a commonly used therapeutic modality in limb lymphedema. A number of pneumatic devices have been constructed. There is lack of reports of comparative studies determining inflation pressure levels, inflation/deflation cycle times, and total pumping times. Aim: ...
Rodriguez-Merchan E Carlos - - 2013
Acute compartment syndrome (ACS) is characterized by an increase in pressure (intramuscular pressure) within a muscle compartment, which reduces capillary perfusion threatening tissue survival. Persistence of this increased pressure for a few hours will result in necrosis of muscle and nerve tissue, with contracture in the affected limb and permanent ...
Ramseier Lea C - - 2013
Icelandic horse riding practices aim to place the rider further caudally on the horse's back than in English riding, claiming that a weight shift toward the hindquarters improves the quality of the tölt (e.g. giving the shoulder more freedom to move). This study compared saddle pressure patterns and the effects ...
Oosterlinck M - - 2013
Empirically, equine distal limb lameness is often linked to hoof imbalance. To objectively quantify dynamic toe-heel and medio-lateral hoof balance of the vertical ground reaction force in sound sport horses, seven Royal Dutch Sport Horses were led at the walk and trot over a dynamically calibrated pressure plate. Forelimb hoof ...
Liu Hong-Yun - - 2013
Pneumatic tourniquets are medical devices that occlude blood flow to distal part of extremities and are commonly used in upper limb surgeries to provide a dry, clean and bloodless field. To decrease pressure-related injuries and potential risk of complications subjected to the high inflation pressure of pneumatic tourniquet, minimal inflation ...
Høyer C - - 2013
We examine the reliability of single and repeated blood pressure measurements at ankle, toe, and arm levels for the diagnosis of peripheral arterial disease (PAD) by laser Doppler flowmetry. Segmental pressures were measured in 200 patients with known or suspected PAD. Segmental indices were calculated using (1) one measurement [M-1], ...
Ali Sadeeq - - 2013
Transtibial amputees encounter stairs and steps during their daily activities. The excessive pressure between residual limb/socket may reduce the walking capability of transtibial prosthetic users during ascent and descent on stairs. The purposes of the research were to evaluate the interface pressure between Dermo (shuttle lock) and Seal-In X5 (prosthetic ...
Pau Massimiliano - - 2013
This study aims to quantitatively characterize plantar pressure distribution in women affected by Ehlers-Danlos syndrome of the hypermobile type (EDS-HT) to verify the existence of peculiar patterns possibly related to postural anomalies or physical and functional lower limb impairments typical of this disease. A sample of 26 women affected by ...
Kawasaki Tota T Graduate School of Medicine, Faculty of Fukuoka Rehabilitation, International University of Health and Welfare, Saga University, Saga, - - 2013
We have encountered situations of patients with critical limb ischemia accompanied by pain at rest and necrosis, who hang their legs down from the bed during sleep. This lower limb position is known to be a natural position, which reduces pain in the lower extremity induced by ischemia. However, the ...
Kunju Nissan - - 2013
Abstract Paraplegic patients have to effect transfer from one seat to another by using their upper limbs. In this process the hands bear almost the entire weight of the body in at least some phases of the transfer. It is desirable to train patients, especially those who are elderly and ...
Singer Jonathan C - - 2013
Challenges in stability control are common post-stroke. Although lower-limb spasticity is a common sensorimotor consequence post-stroke, its potential to further complicate stability control among stroke-survivors remains largely unknown. Advancing such understanding can help inform strategies to reduce fall risk and increase independence among these individuals. The purpose of this study ...
Mazer-Amirshahi Maryann - - 2013
Copperhead envenomation causes local soft tissue effects; however, associated compartment syndrome is rare. We report a case of a 17-month-old with significantly elevated compartment pressures successfully treated with antivenin and supportive care. A 17-month-old girl sustained a copperhead bite to the foot and presented with circumferential edema, erythema, and ecchymosis ...
Messina Frank C - - 2013
Fresh human cadavers provide an effective model for procedural training. Currently, there are no realistic models to teach fascial compartment pressure measurement. We created a human cadaver fascial compartment pressure measurement model and studied its feasibility with a pre-post design. Three faculty members, following instructions from a common procedure textbook, ...
Martini Romeo - - 2013
The skin flowmotion of 13 patients suffering from critical limb ischemia (CLI) was studied with wavelet analysis (WA) of the laser Doppler signals (LDS). The WA selects six different frequency components (FCs), each relating to a specific cardiovascular system structures activities; FC I 1-2 Hz heart, FC II 0.2 Hz ...
van Gils Willemijn - - 2013
To compare the sensibility of the stump in adults with an acquired major upper extremity amputation with the sensibility of the unaffected side and with the corresponding body parts of healthy controls, as well as to relate sensibility of the stump to daily functioning. A survey with matched controls. A ...
Kinoshita Meredith - - 2013
AIM: Perfusion Index (PI) is a quantifiable measurement of peripheral perfusion and may be a useful adjunct to the assessment of circulatory status in the newborn. 1) To assess reproducibility of PI and 2) To determine if there is a difference between simultaneously obtained limb measurements of PI in newborns ...
Dellacà Raffaele L - - 2013
OBJECTIVE:: 1) To investigate the possibility of estimating respiratory system impedance (Zrs, forced oscillation technique) by using high-amplitude pressure oscillations delivered during high-frequency oscillatory ventilation; 2) to characterize the relationship between Zrs and continuous distending pressure during an increasing/decreasing continuous distending pressure trial; 3) to evaluate how the optimal continuous ...
Stevenson Alec T - - 2013
Garment fit may influence the effectiveness with which Full-Coverage Anti-G Trousers (FCAGT) transmit pressure to the skin surface, and hence provide protection from sustained +Gz acceleration. A search of the available literature, however, did not reveal any prior work quantifying this effect. Three related studies were performed. In Study I, ...
Lapre Andrew K - - 2013
The moment transferred at the residual limb socket interface of transtibial amputees can be a limiting factor of the comfort and activity level of lower limb amputees. The high pressures seen can be a significant source of pain, as well as result in deep tissue damage. The compensation of the ...
Cohen Debbie L - - 2013
Hypertension is a major public health issue affecting 68 million adults in the United States. Lifestyle modifications including complementary therapies such as the movement based mind body practice of yoga have become increasingly popular in the United States and have been considered as a potential alternative to medication in blood ...
Kumar B - - 2013
BACKGROUND: Compression bandage consists of fibrous materials which are viscoelastic in nature due to which the internal stress developed in the compression bandage under wrapped position may decay over time. The viscoelastic behaviour of a textile material depends on the fibre type as well as on its structure, and hence ...
Melnikov Vladimir N - - 2013
To verify whether peripheral blood circulation and arterial wall distensibility are influenced by atmospheric pressure (AtPr) and to examine if their association is dependent on age and/or sex. Associations among natural AtPr levels (on the examination day as well as 1 and 2 days prior), limb muscle hemodynamics, and distensibility ...
Andrews Karen L - - 2013
OBJECTIVE: Noninvasive arterial studies have been used to determine level of amputation. The objective of this study was to examine each component of the noninvasive arterial studies to determine optimal cut points to predict healing and to evaluate whether physiologic maneuvers could improve the utility of transcutaneous oxygen pressure (TcPO2) ...
Bundó Magdalena - - 2013
BACKGROUND: The removal of mercury sphygmomanometers from health centers requires the validation of other instruments to measure blood pressure in the limbs to calculate the ankle-brachial index (ABI). METHODS: Descriptive cross-sectional study of agreement between two measurement methods in type 2 diabetes patients from three urban primary healthcare centres in ...
Oroko Maroria D - - 2013
Hypertension is not a recognized complication of circular external fixation. The aim of this study was to determine the incidence of hypertension following this procedure. A retrospective review of 57 patients was carried out between January 2006 and May 2010. At least three blood pressure readings were used to define ...
Lairet Julio - - 2013
Abstract Objective. We sought to compare the flow rates of the proximal tibia, the distal femur, and the proximal humerus using high pressure (greater than 300 mmHg) through an intraosseous (IO) infusion needle in an adult swine model. Methods. We performed a prospective interventional study in 11 swine. After placement of ...
Nelson James A - - 2013
BACKGROUND: Osseofascial compartment syndrome is defined by ischemic necrosis of muscle caused by elevated pressure within fascial compartments. The diagnosis can be made either clinically or through compartment pressure measurements. Compartment pressure above 30 mm Hg was traditionally used as the threshold for diagnosis of compartment syndrome, but was challenged ...
Kumar Bipin - - 2013
Internal stress in a compression bandage wrapped over a limb in vitro is expected to reduce over time because of fatigue which may occur due to repetitive and prolonged variations in the extension of the bandage during posture change and exercise. This phenomenon may cause significant variation in the sub-bandage ...
Al-Fakih Ebrahim A - - 2013
This study presents the first investigation into the capability of fiber Bragg grating (FBG) sensors to measure interface pressure between the stump and the prosthetic sockets of a trans-tibial amputee. FBG element(s) were recoated with and embedded in a thin layer of epoxy material to form a sensing pad, which ...
Ten Broek Clara Mariquita Antoinette - - 2013
Fluctuating asymmetry (FA), as an indirect measure of developmental instability (DI), has been intensively studied for associations with stress and fitness. Patterns, however, appear heterogeneous and the underlying causes remain largely unknown. One aspect that has received relatively little attention in the literature is the consequence of direct mechanical effects ...
Mc Loughlin Santiago S Centro Médico Florida, Buenos Aires, - - 2013
Acute compartment syndrome occurs when the tissue pressure within a closed muscle compartment exceeds the perfusion pressure. We observed diastolic retrograde arterial flow (DRAF) in 2 patients in the arteries proximal to compartment syndromes in injured limbs. We hypothesized that DRAF may represent an early sign of compartment pressure increments. ...
Vanicek Natalie N Discipline of Exercise and Sport Science, Faculty of Health Sciences, University of - - 2013
Computerized dynamic posturography with the EquiTest is an objective technique for measuring postural strategies under challenging static and dynamic conditions. As part of a diagnostic assessment, the early detection of postural deficits is important so that appropriate and targeted interventions can be prescribed. The Sensory Organization Test (SOT) on the ...
Watanabe Yoshiko Y Department of Physiology 1, Kawasaki Medical School, Kurashiki, Okayama, - - 2013
To assess the characteristics of skin perfusion pressure (SPP) measured using a thermostatic heating probe and whether a thermostatic heating probe improves SPP detection. We studied 8 feet of healthy young subjects and 31 feet of elderly patients suspected to have severe limb ischemia. We measured SPP at the dorsum ...
El-Hilaly Rana - - 2012
BACKGROUND: In diabetic subjects, reulcerations following first ray amputations are particularly frequent. Treatment usually includes an in-shoe intervention to reduce plantar pressure. OBJECTIVE: To investigate the effects of a total contact insole on the plantar pressure reduction in patients with partial first ray amputations. MATERIAL AND METHODS: Twenty diabetic subjects ...
Sanders Joan E - - 2012
The purpose of this research was to investigate rates of residual-limb fluid volume change within one day for people with transtibial limb loss. Rates of fluid volume change during 30 min test sessions of sitting, standing, and walking activities were measured twice a day, once in the morning and once ...
Okitsu T - - 2012
Lower limb lymphedema is difficult to prevent and diagnose early because its natural history is unclear. Therefore, the aim of this study was to clarify its pathogenesis and to identify risk factors that may lead to early diagnosis. In 29 patients, aged 25 to 74 years with cervical, uterine, or ...
Antle David M - - 2012
Standing work is associated with discomfort and symptoms in the trunk and lower limb. However, mechanisms underlying these observations are poorly understood. Moreover, most research on standing-related symptoms has focused on only one region (lower limb or trunk), and has not considered the impact and interactions between vascular, muscular and ...
Mateus Jaime - - 2012
Adequate blood supply and circulation to the bones is required to maintain a healthy skeleton. Inadequate blood perfusion is associated with numerous bone pathologies and a decrease in bone mineral density, yet bone hemodynamics remains poorly understood. This study aims to 1) quantify bone hemodynamic responses to changes in external ...
Eshraghi Arezoo - - 2012
BACKGROUND: Different suspension systems that are used within prosthetic devices may alter the distribution of pressure inside the prosthetic socket in lower limb amputees. This study aimed to compare the interface pressure of a new magnetic suspension system with the pin/lock and Seal-In suspension systems. METHODS: Twelve unilateral transtibial amputees ...
Lee S W Y - - 2012
BACKGROUND: /st>Aortocaval compression (ACC) can result in haemodynamic disturbances and uteroplacental hypoperfusion in parturients. Its detection is difficult because in most patients, sympathetic compensation results in no signs or symptoms. However, profound hypotension may develop after sympathectomy during regional anaesthesia. In this prospective observational study, we aimed to detect ACC ...
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