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Birkenfeld Falk - - 2012
Purpose: The purpose of this study was to investigate the increases in intraosseous temperature generated by a modern ultrasonic device for bone surgery (UDBS) and the influences of working pressure and cooling irrigation on this temperature. Materials and Methods: Twenty human mandibular bone specimens (20 x 15 x 5 to ...
Rieu Jean-Paul - - 2012
The Dictyostelium slug is an excellent model system for studying collective movements, as it is comprised of about 10(5) cells all moving together in the same direction. It still remains unclear how this movement occurs and what the physical mechanisms behind it are. By applying our recently developed 3D traction force ...
Abe Y - - 2012
This study aimed to analyse occlusal force, area and pressure for individual maxillary and mandibular teeth by assessing their occlusal-supporting abilities. Ninety-nine subjects (49 men and 50 women; average age, 24·7 ± 3·4 years; range, 20-37 years) performed maximal voluntary clenching twice for 3 s in both the intercuspal position and the intercuspal position with ...
Lazarus A - - 2012
We present results from an experimental investigation of the indentation of nonspherical pressurized elastic shells with a positive Gauss curvature. A predictive framework is proposed that rationalizes the dependence of the local rigidity of an indented shell on the curvature in the neighborhood of the locus of indentation, the in-out ...
Jang D H - - 2013
The effects of growth pressure in metal-organic chemical vapor deposition (MOCVD) on the structural and optical properties of InGaN/GaN multiple-quantum-wells (MQWs) grown on c-plane sapphire substrate were investigated by scanning transmission electron microscopy (STEM), atom probe tomography (APT), Raman spectroscopy and electroluminescence (EL) spectroscopy. As the growth pressure decreased, the ...
Grabska Katarzyna - - 2012
About 70% of stroke patients have a history of hypertension. Patients with hypertension prior to stroke onset have higher blood pressure in the acute phase of stroke than non-hypertensive individuals. High blood pressure in the acute stroke adversely affects outcome. We analyzed 30-days outcome in 1306 hypertensive patients with ischemic ...
Hisham Nur Fatirul - - 2012
Stroke continues to be one of the leading causes of mortality and morbidity worldwide. There are 2 main types of stroke: ischaemic strokes, which are caused by obstruction of the blood vessels leading to or within the brain, and haemorrhagic strokes, which are induced by the disruption of blood vessels. ...
Castilla-Guerra Luis - - 2012
High blood pressure (BP) is the strongest risk factor for stroke. It is estimated that almost 50% of strokes may be attributable to hypertension. Both diastolic and isolated systolic hypertension are important predictors of primary or recurrent strokes, and even minor decreases in BP can reduce the risk of stroke. ...
Ramchandra Rohit R Florey Neuroscience Institutes, University of Melbourne, Parkville, Victoria 3010, Australia. - - 2013
The paraventricular nucleus of the hypothalamus (PVN) plays a major role in central cardiovascular and volume control, and has been implicated in controlling sympathetic nerve activity (SNA) during volume expansion and in heart failure (HF). The objectives were to determine the role of the PVN on cardiac and renal SNA ...
Kothari Kamlesh K Apollo Gleneagles Hospital, 58, Canal Circular Road, Kolkata, 700054 West Bengal - - 2013
Post-operative swelling in the maxillofacial region is a common finding, especially in the cheek region. There is abundance of soft tissue and lack of any anatomical barrier to inhibit the swelling in the cheek region. External pressure dressing is the most commonly followed norm along with steroids. This protocol usually ...
Morimatsu Hiroshi - - 2012
Background:Phenylephrine treatment of hypotension in sepsis raises concern because it may decrease vital organ bloodflow. Accordingly, we investigated the effects of phenylephrine on systemic and regional bloodflow in normal and septic sheep.Methods:Responses to phenylephrine or vehicle infusion for 6 hours were determined in conscious normal sheep and sheep with early ...
Siebert Janusz - - 2012
Standard procedures carried out at a stroke department in patients after a cerebral event may prove insufficient for monitoring hemodynamic indices. Impedance cardiography enables hemodynamic changes to be monitored non-invasively. The aim of the work was to describe hemodynamic parameters in patients with acute phase of ischemic and hemorrhagic stroke ...
Grise Erin M EM Department of Emergency Medicine and Division of Neurocritical Care, Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267-0769, - - 2012
Acute stroke, including the subtypes of ischemic stroke, intracerebral hemorrhage (ICH), and subarachnoid hemorrhage (SAH), typically involves significant fluctuations in blood pressure (BP). Treatment of BP after all stroke types is controversial. In each case, there are theoretical dangers to leaving BP alone as well as altering it artificially. In ...
Kim Kwan - - 2012
Organic isocyanide adsorbed on a noble metal nanostructure can be used as a platform for a volatile organic compound (VOC) sensor operating via surface-enhanced Raman scattering (SERS). This is possible since the NC stretching band of organic isocyanides such as 2,6-dimethylphenylisocyanide (2,6-DMPI) is very susceptible to the surface potential of ...
Colin Jérôme - - 2012
The morphological evolution by surface diffusion of a core-shell spherical particle has been investigated theoretically under hydrostatic pressure when the shear modulii of the core and shell are different. A linear stability analysis has demonstrated that depending on the pressure, shear modulii, and radii of both phases, the free surface ...
Suehiro Kotaro K Division of Vascular Surgery, Department of Surgery and Clinical Science, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, - - 2012
To clarify interface pressures (IP) derived from class II and III oversize stockings. Healthy volunteers with legs fitting size S (n = 10), M (n = 6), or L (n = 6) stockings wore class II and III stockings of various sizes up to 5L. IPs were measured in the ...
Smith Caroline J CJ Department of Kinesiology, Pennsylvania State University, University Park, PA, - - 2011
Essential hypertension is a proinflammatory, proconstrictor disease coinciding with endothelial dysfunction and inward vessel remodeling. Using the skin circulation, our aim was to determine whether inducible NO synthase (iNOS) upregulation attenuates NO-dependent cutaneous vasodilation in hypertensive humans. We hypothesized that, with hypertension, localized iNOS inhibition would restore vasodilation in response ...
Xingyu Yan - - 2012
Acute ureteral obstruction leads to changes in pressure inside the ureter, interrupting ureter function. The aim of our study is to explore the relationship between nitric oxide (NO) concentration and pressure in the ureter and to observe the effects of nitric oxide on the revival of renal function. We created ...
Fang Yuehua - - 2011
OBJECTIVES: Enhanced adrenergic drive is involved in the development of left ventricular (LV) diastolic dysfunction observed in metabolic syndrome (MS). Thus, β-blockers might improve LV dysfunction observed in MS, but whether this occurs is unknown. METHODS: We assessed in Zucker fa/fa rats the effects of short- (5days) and long-term (90days) ...
Besirli C G - - 2011
SUMMARY: In accelerated hypertension, vasogenic brain edema associated with PRES may represent either autoregulatory breakthrough leading to vasodilation or excessive autoregulation leading to vasoconstriction. We describe 2 patients with PRES in accelerated hypertension who had serous retinal detachments, a vasoconstrictive phenomenon. The concurrence of serous retinal detachment and PRES offers ...
Hodkinson P D - - 2011
Acute exposure to altitude principally encompasses aviation and space activities. These environments can be associated with very acute changes in pressure, oxygenation and temperature due to rates and magnitude of ascent that are not experienced in more chronic exposure such as mountaineering. The four key physiological challenges during acute exposure ...
van den Hooven Edith H - - 2011
Abstract Exposure to air pollution is associated with elevated blood pressure and cardiovascular disease. We assessed the associations of exposure to particulate matter (PM(10)) and nitrogen dioxide (NO(2)) levels with blood pressure measured in each trimester of pregnancy and the risks of pregnancy-induced hypertension and preeclampsia in 7006 women participating ...
Perna Alessandra F - - 2011
Hydrogen sulfide (H(2)S) is a poisonous gas which can be lethal. However, it is also produced endogenously, thus belonging to the family of gasotransmitters along with nitric oxide and carbon monoxide. H(2)S is in fact involved in mediating several signaling and cytoprotective functions, for example in the nervous, cardiovascular, and ...
Simões Maylla Ronacher - - 2011
Chronic lead exposure causes hypertension and cardiovascular disease. Our purpose was to evaluate the effects of acute exposure to lead on arterial pressure and elucidate the early mechanisms involved in the development of lead-induced hypertension. Wistar rats were treated with lead acetate (i.v. bolus dose of 320 µg/Kg), and systolic ...
Wells Ellen M - - 2011
Lead exposure is associated with elevated blood pressure during pregnancy; however, the magnitude of this relationship at low exposure levels is unclear. Our goal was to determine the association between low-level lead exposure and blood pressure during late pregnancy. We collected admission and maximum (based on systolic) blood pressures during ...
Dogan Ali - - 2011
The aim of this study was to investigate the acute effects of passive smoking on left ventricular (LV) function in healthy volunteers. Sixty-one healthy nonsmoking volunteers were enrolled in this study. LV M-mode, two-dimensional, conventional Doppler, and color tissue Doppler echocardiography were performed, and carboxyhemoglobin (COHb) levels were obtained from ...
Poreba Rafal - - 2010
Occupational exposure to lead may cause an increase in blood pressure. The aim of the study was to estimate the effect of occupational exposure to lead on selected parameters of ambulatory blood pressure monitoring (ABPM) and structural changes in carotid arteries. The study included 33 normotensive men occupationally exposed to ...
Brook Robert D - - 2010
Background: Levels of fine particulate matter [≤ 2.5 μm in aerodynamic diameter (PM2.5)] are associated with alterations in arterial hemodynamics and vascular function. However, the characteristics of the same-day exposure-response relationships remain unclear.Objectives: We aimed to explore the effects of personal PM2.5 exposures within the preceding 24 hr on blood ...
Chatterjee Arjun - - 2010
Maintenance of mean arterial pressure>65 mm Hg has been associated with improved clinical outcomes in many studies of critically ill patients. Current guidelines for the management of septic shock and guidelines for managing other critical illnesses suggest intra-arterial blood pressure measurement is preferred over automated oscillometric noninvasive blood pressure measurement. ...
Andrews Jeffrey C - - 2011
Blood pressure cuff dimensions directly affect accuracy of blood pressure measurements. For accurate blood pressure measurements, the width of the cuff must be proportional to arm circumference. A cuff that is too narrow results in falsely high blood pressure values, and a cuff that is too wide results in falsely ...
Zheng Dingchang - - 2011
Mean arterial pressure (MAP) is determined in most automated oscillometric blood pressure devices, but its derivation has been little studied. In this research, different techniques were studied and compared with the auscultatory technique. Auscultatory systolic and diastolic blood pressure (SBP and DBP) were obtained in 55 healthy subjects by two ...
Huh Jin Won - - 2010
Although the alveolar recruitment manoeuvre (ARM) is considered to be an optimal method of recruiting collapsed alveoli in a short period, the haemodynamic effects of the ARM have not been investigated. The aim of this study was to assess whether the ARM causes haemodynamic instability in patients with ARDS, and ...
Raamat R - - 2010
Simultaneously recorded oscillometric envelopes, obtained pneumo- and photoplethysmographically from a small local pad-type pneumatic cuff on the left and from a larger cuff on the right radial artery, were compared in 17 healthy subjects. For oscillometric estimation, specific fixed ratios based on evidence in the literature were used. The obtained ...
Bonham Phyllis A - - 2010
The purpose of this study was to determine if toe pressures (TPs) obtained by a registered nurse using a portable photophlethysmograph (PPG) were equivalent to TPs obtained by a registered vascular technologist (RVT) using standard laboratory equipment. A within-subjects, comparative design was used for the study. Thirty subjects referred to ...
Swali Angelina - - 2010
A host of animal studies have been used to model the effects of exposure to a low protein diet in utero on adult blood pressure. Collection of systolic blood pressure data by the indirect tail-cuff plethysmography method consistently shows increased pressures in low protein exposed rodent offspring compared to controls, ...
Hofhuizen C M - - 2010
BACKGROUND: Continuous non-invasive measurement of finger arterial pressure (FAP) is a reliable technology in adults. FAP is measured with an inflatable cuff around the finger and simultaneously converted to a reconstructed brachial artery pressure waveform (reBAP) by the Nexfin™ device. We assessed the adequacy of a prototype device (Nexfin-paediatric), designed ...
Bonso Elisa - - 2010
Although the upper arm has the shape of a truncated cone, cylindrical cuffs and bladders are currently used for blood pressure (BP) measurement. The aims of this study were to describe upper arm characteristics and to test the accuracy of a standard adult-size conical cuff coupled to an oscillometric device ...
Henchoz Yves - - 2010
The purpose of this study was to evaluate a new method of measuring rolling resistance in treadmill cycling and to establish its sensitivity and reproducibility. One participant was asked to keep a bicycle in equilibrium on a treadmill without pedalling at a constant speed of 5.56 m x s(-1), which ...
Reifsnyder Thomas T Division of Vascular Surgery, Johns Hopkins Bayview Medical Center, Johns Hopkins Medical Institutions, Baltimore, MD, USA. - - 2010
Treatment options after arteriovenous fistula (AVF) associated steal include ligation, banding, and distal revascularization-interval ligation (DRIL). The purpose of this study was to evaluate the arterial pressure gradients in upper extremity steal syndrome. Preoperative arteriography and sequential intra-arterial pressure readings were performed on consecutive AVF patients with hand ischemia. Analysis ...
Sabater-Hernández Daniel - - 2010
To investigate whether the measurement of blood pressure in the community pharmacy is a valuable method to diagnose hypertension, to assess the need and the effectiveness of anti-hypertensive treatments, or, in general, to make clinical decisions. Information has been extracted from articles published in English and in Spanish, from January ...
Jeleazcov C - - 2010
BACKGROUND: Continuous non-invasive arterial pressure measured with CNAP (CNAP) has been shown to be superior to intermittent oscillometric measurements during procedural sedation and spinal anaesthesia. We assessed the performance of CNAP during general anaesthesia by analysis of agreement with invasive measurements of arterial pressure (AP). METHODS: Eighty-eight patients undergoing elective ...
Chetboul Valérie - - 2010
OBJECTIVE: To determine the intra- and interobserver variability of systolic arterial pressure (SAP) and diastolic arterial pressure (DAP) measurements obtained with 2 indirect methods in awake dogs and percentage of successful measurements. ANIMALS: 6 healthy conscious adult dogs. PROCEDURES: 4 observers with different levels of training measured SAP and DAP ...
Santarpia Alfonso - - 2010
During hypnosis, the authors tested repeated weight-related, literal and metaphorical suggestions about the heaviness of the subjects' arms. The purpose was to determine if linguistically varied hypnotic suggestions produced significantly different motor reactions--involuntary pressure forces of the forearms--as assessed by a linguistic biomechanical system. Classic, literal (L) suggestions such as ...
Pinar Rukiye - - 2010
To test whether there is any difference between blood pressure readings with patients wearing clothes under the manometer's cuff and not wearing clothes. The few studies published on this subject have shown that blood pressure measurements give similar results whether the patients' arm is covered by clothing or not. However, ...
Drosos Georgios I - - 2011
The aim of the present study was to compare a new silicone ring tourniquet (SRT) with a classic pneumatic cuff tourniquet (PT) in terms of tolerance and recovery time following their use in healthy volunteers. Both tourniquets were applied in the arm and thigh of 15 healthy unmedicated volunteers. PT ...
Silva Ricardo Pereira - - 2010
The objective of this study is to investigate how blood pressure is measured in different outpatient clinics. This is a retrospective study performed with 1,000 patients, randomly selected among patients followed in different outpatient clinics in Fortaleza, Brazil. Among the 1,000 patients, 962 had available records. The older the patient, ...
Lee Jennifer J - - 2010
To compare accuracy of blood pressure measurements using a live subject and a simulator arm, and to determine students' preferences regarding measurement. This was a crossover study comparing blood pressure measurements from a live subject and a simulator arm. Students completed an anonymous survey instrument defining opinions on ease of ...
Rolian Campbell - - 2010
Human hands and feet have longer, more robust first digits, and shorter lateral digits compared to African apes. These similarities are often assumed to be independently evolved adaptations for manipulative activities and bipedalism, respectively. However, hands and feet are serially homologous structures that share virtually identical developmental blueprints, raising the ...
Wang Ninghuan N Department of Systems and Information Engineering, University of Virginia, Charlottesville, VA, - - 2010
Prostate carcinoma (and other prostate irregularities and abnormalities) is detected in part via the digital rectal examination. Training clinicians to use particular palpation techniques may be one way to improve the rates of detection. In an experiment of 34 participants with clinical backgrounds, we used a custom-built simulator to determine ...
Stodtmeister Richard - - 2010
To examine the influence of age on systolic (systOAP) and diastolic (diastOAP) blood pressure in the ophthalmic artery (OA) measured by a new contact lens dynamometer (CLD). In a prospective cross-sectional clinical trial, 106 eyes of 106 patients (58 women, 48 men) were examined. A nearly uniform age distribution was ...
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