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Selvaraj N - - 2011
Accurate and early detection of blood volume loss would greatly improve intraoperative and trauma care. This study has attempted to determine early diagnostic and quantitative markers for blood volume loss by analyzing photoplethysmogram (PPG) data from ear, finger and forehead sites with our high-resolution time-frequency spectral (TFS) technique in spontaneously ...
Kasanen I H E - - 2011
Individual and permanent identification of experimental animals is a common and often essential research practice. There is little information available on the short-term effects of these procedures on the animals. In this study, seven rats were implanted with telemetric devices. The effects of three different identification methods (ear tattoo, ear ...
Myers Stephan R - - 2011
BACKGROUND: Anastomotic leak after gastrointestinal anastomosis is a well-known and serious complication, yet there is no standardized approach to reliably create an anastomosis with sufficient mechanical properties to consistently avoid an anastomotic leak. The purpose of this study was to evaluate the relationships among combined tissue thickness, tissue compression, closed ...
Marchioni Daniele - - 2011
Epitympanic primary cholesteatoma represents a challenge for ENT surgeons. Its exact pathogenesis is still unknown because of the very complex anatomy of this region. Until now, only a few authors have described this region and tried to hypothesize the causes that could lead to cholesteatoma genesis. We hypothesize the existence ...
Krzemiński T F - - 2011
Krzemiński TF, Gilowski Ł, Wiench R, Płocica I, Kondzielnik P, Sielańczyk A. Comparison of ropivacaine and articaine with epinephrine for infiltration anaesthesia in dentistry - a randomized study. International Endodontic Journal. ABSTRACT: Aim  To compare the efficacy, onset time and duration of maxillary infiltration anaesthesia with 0.5% plain ropivacaine or ...
Tompkins Marc - - 2011
PURPOSE: To evaluate whether the use of knotless lateral anchors in a suture bridge construct produces better contact area and pressure parameters than a suture bridge construct with standard lateral anchors that require knots or a double-row repair. The hypothesis was that knotless lateral anchors would produce better contact area ...
Hayward Wap - - 2011
Objective: Hydrodissection and high-pressure injection are important for the treatment of dense connective tissue lesions including rheumatoid nodules, Dupuytren's contracture, and trigger finger. The present study determined the optimal syringes for high-pressure injection of dense connective tissue lesions. Methods: Different sizes (1, 3, 5, 10, 20, and 60 mL) of ...
Pattavilakom Ananthababu - - 2011
BACKGROUND:: Retraction injury might explain the soft tissue complications seen after anterior cervical surgery. A novel retractor system (SRS), using a principle of bone fixation with rotation, has been shown to reduce retraction pressure in a cadaveric model of anterior cervical decompression and fusion (ACDF). OBJECTIVE:: To compare conventional Cloward ...
Christal Aric A - - 2011
: The purpose of this study was to examine the efficacy of a fluoroscopically guided hip capsulotomy. : Ten fresh-frozen paired cadaveric hips were injected under fluoroscopic guidance with saline sufficient to generate an intra-articular pressure greater than 58 mmHg. The pressure was monitored continuously using a percutaneous transducer. A ...
Atik O Sahap - - 2011
We describe a case, which gives an answer to the question of 'Does the surgical repair of the acute Achilles tendon ruptures cause the structural changes in the 15-year follow-up?' The only complaint of the patient was the feeling of that the size of the left foot is smaller than ...
Lin Hsin-Ching - - 2011
To study the effect of Z-palatopharyngoplasty plus radiofrequency of the base of the tongue on middle ear function. A retrospective review of a prospective data set at a tertiary care center. University-affiliated medical center. The study population included 47 patients (42 men and 5 women; mean age, 40.8 years) who ...
Kim Doo-Sup - - 2011
BACKGROUND: Despite the attention that has been paid to restoration of the capsulolabral complex anatomic insertion onto the glenoid, studies comparing the pressurized contact area and mean interface pressure at the anatomic insertion site between a single-row repair and a double-row labral repair have been uncommon. PURPOSE: The purpose of ...
Noble E J - - 2011
BACKGROUND: Several instruments are available for open and laparoscopic dissection, including electrothermal bipolar vessel sealers and ultrasonically coagulating shears. The vessel sealing ability of three devices in colorectal specimens was compared in an experimental study. METHODS: Surgical specimens from patients scheduled for elective open or laparoscopic colorectal resection were allocated ...
Yu Jun - - 2011
The aim of the present study was to examine the expression of glutamine synthetase (GS) in rat retinal Müller cells induced by different levels of hydrostatic pressure using a novel pressure mechanism. pH, PCO(2) or PO2 in culture medium as determined by gas analysis was used to examine the pressure ...
Schrey Aleksi - - 2011
Abstract Conclusion: This study suggests that although oxygen partial pressure in tissue (p (ti)O(2)) measurement is a feasible method for continuous postoperative monitoring of free flaps, low correlation between blood pressure (BP) and p (ti)O(2) might predict compromised overall outcome. Thus, it is of utmost importance to keep the BP ...
Hofer Jason K - - 2011
BACKGROUND: Repetitive kneeling in certain occupations, hobbies and cultures is associated with tibiofemoral joint osteoarthritis. The biomechanics of kneeling is therefore of interest. This cadaveric study investigated tibiofemoral joint contact areas, pressures, and kinematics in response to kneeling. METHODS: Five human cadaveric knees were subjected to simulated kneeling at flexion ...
De Maria Carmelo - - 2011
A novel squeeze pressure bioreactor (SQPR) for non-contact hydrodynamic stimulation of cartilage is described. The bioreactor is based on a small piston which moves up and down, perpendicular to a tissue construct, in a fluid-filled chamber. Fluid displaced by the piston generates a pressure wave as well as shear stress ...
Portnoy Sigal - - 2011
Spinal cord injury patients are under daily risk for developing deep tissue injury which is a severe pressure ulcer that initiates in soft tissues at the bones' proximity. We aimed to formulate a patient-specific biomechanical model that can continuously monitor internal tissue stresses in real time. We adopted a formulation ...
Duggan John P JP - - 2011
Complete ulnar collateral ligament (UCL) injury increases articular pressure and reduces contact area compared with the normal intact UCL. UCL reconstruction restores the contact area and contact pressure observed in the native joint. Six male cadaveric elbows were mounted on a custom jig capable of simulating the 2 critical phases ...
Voermans R P - - 2011
Colonic perforation is a serious complication of colonoscopy, with surgical repair usually indicated. The aim was to compare acute strength of various endoscopic colonic closure techniques by assessing air leak pressures in a previously described ex vivo experimental apparatus. Standardized colonic perforations were created using fresh porcine colon and subsequently ...
Curtis Cara Anne - - 2011
A pressure ulcer is a medical complication that arises in persons with decreased mobility and/or sensation. Deep pressure ulcers starting at the bone-muscle interface are the most dangerous, as they can cause extensive damage before showing any signs at the skin surface. We previously proposed a novel intervention called intermittent ...
Schmidt Hendrik - - 2011
Previous biphasic finite element studies investigated the temporal response of a spinal segment under rather simplified loading conditions with no attention to unloading and recovery phases. Employment of existing constitutive relations in porous media yields rather large suction-type pore pressures in the disc as the load suddenly disappears. Such negative ...
Bariteau Jason T - - 2011
While intracompartmental pressure monitoring is a widely used diagnostic tool to measure intracompartmental pressures in the setting of compartment syndrome, its invasive nature has prompted the development of noninvasive techniques, such as near-infrared spectrometry. We prospectively assessed the association between tissue oxygen saturation measured by near-infrared spectrometry and compartment pressure ...
Rasdi A R - - 2011
The aim of this study was to determine the prevalence of hypertensive retinopathy, features of hypertensive retinopathy and visual outcome in hypertensive disorders in pregnancy in Hospital Universiti Sains Malaysia, Kelantan, Malaysia. A prospective observational hospital based study involving 154 patients (308 eyes) with hypertensive disorders in pregnancy was conducted. ...
Kim Namkeun - - 2011
Of the two pathways through which we hear, air conduction (AC) and bone conduction (BC), the fundamental mechanisms of the BC pathway remain poorly understood, despite their clinical significance. A finite element model of a human middle ear and cochlea was developed to gain insight into the mechanisms of BC ...
Holmer Christoph - - 2011
PURPOSE: In recent years, vessel sealing has become a well-established method in surgical practice for sealing and transecting vessels. Since this technology depends on the fusion of collagen fibers abundantly present in the intestinal wall, it should also be possible to create intestinal anastomoses by thermofusion. Bipolar radiofrequency-induced thermofusion of ...
Boyd Nathan H - - 2011
Objective. Tragal pumping is the practice of pushing on the tragus to raise pressure in the external auditory canal. This is a study to determine if tragal pumping improves middle ear penetration of ototopical medications via a patent pressure equalization tube. Study Design. Prospective, randomized controlled trial. Setting. Tertiary referral ...
Buser Zorica - - 2011
STRUCTURED ABSTRACT: Study Design: Surgically-denucleated porcine intervertebral discs (IVD) were injected with BIOSTAT BIOLOGX® Fibrin Sealant (FS), and the in vivo effects were assessed over time by histological, biochemical and mechanical criteria.Objectives: The objectives were to test whether the intradiscal injection of FS stimulates disc healing.Summary of background data: Disc ...
Bacani C Joseph - - 2011
BACKGROUND: Measurement of intracranial pressure (ICP) is recommended in comatose acute liver failure (ALF) patients due to risk of rapid global cerebral edema. External ventricular drains (EVD) can be placed to drain cerebrospinal fluid and monitor ICP simultaneously although this remains controversial in the neurosurgical community given the risk of ...
Koreckij Jason - - 2011
Study Design. Prospective, two way complete block design analyzing facial contact pressures during prone positioning with the use of cervical traction for spinal surgery. Level 2 evidence.Objective. To assess the effect of varying traction angle and traction weight to limit facial contact pressure.Summary of Background Data. Posterior spine surgery has ...
Moerman Annelies - - 2011
Purpose: To describe a simple, noninvasive technique to detect changes in oxygen saturation at the level of the spinal cord and to suggest its suitability for individualized blood pressure management during and after thoracoabdominal aneurysm repair. Case Report: A 53-year-old man with a history of multiple arch and thoracic aortic ...
Arksornnukit Mansuang - - 2011
Pressure transmission and distribution under denture bases may be variable depending on the different materials and cuspal angulations of denture teeth. The purpose of this study was to evaluate pressure transmission and distribution under impact load using denture teeth made with different materials and cuspal angulations. Three types (acrylic resin, ...
Keefe Douglas H - - 2011
An insert ear-canal probe including sound source and microphone can deliver a calibrated sound power level to the ear. The aural power absorbed is proportional to the product of mean-squared forward pressure, ear-canal area, and absorbance, in which the sound field is represented using forward (reverse) waves traveling toward (away ...
Bunton Kate K Department of Speech, Language, and Hearing Sciences, University of Arizona, Tucson, Arizona, USA. - - 2011
Clinical evaluation of velopharyngeal function relies heavily on auditory perceptual judgments that can be supported by instrumental examination of the velopharyngeal valve. Many of the current instrumental techniques are difficult to interpret, expensive, and/or unavailable to clinicians. Proposed in this report is a minimally invasive and inexpensive approach to evaluating ...
Poh Seng-Yew - - 2011
The anterior intermeniscal ligament (AIML) is an anatomically distinct structure that connects the anterior horns of the medial and lateral menisci. We hypothesized that both menisci work together as a unit in converting axial joint loading into circumferential hoop stresses, due to intermeniscal attachments. Therefore, loss of the AIML could ...
Carreau Aude - - 2011
Oxygen supply and diffusion into tissues are necessary for survival. The oxygen partial pressure (PO(2) ), which is a key component of the physiological state of an organ, results from the balance between oxygen delivery and its consumption. In mammals, oxygen is transported by red blood cells circulating in a ...
Alper Cuneyt M - - 2011
OBJECTIVES/HYPOTHESIS:: Determine the role of mastoid volume in middle ear pressure (MEP) regulation. The hypothesis was that inert gas exchange between blood and middle ear (ME) is slower for larger mastoid volumes. STUDY DESIGN:: Prospective. METHODS:: For 21 enrolled subjects, the bilateral surface areas and volumes of the mastoid and ...
Alper Cuneyt M - - 2011
Determine the role of mastoid volume in middle ear pressure (MEP) regulation. The hypothesis was that inert gas exchange between blood and middle ear (ME) is slower for larger mastoid volumes. Prospective. For 21 enrolled subjects, the bilateral surface areas and volumes of the mastoid and tympanum were measured from ...
Jaumard Nicolas V - - 2011
ABSTRACT: Study Design: A novel non-invasive approach to measure facet joint pressure in the cervical spine was investigated using a tip-mounted transducer that can be inserted through a hole in the bony lateral mass. This technique is advantageous because it does not require resection of the joint capsule, but there ...
Hidir Yusuf - - 2011
OBJECTIVE: To compare success rates of middle ear inflation device (Ear Popper ©), Valsalva maneuver and Toynbee maneuver in middle ear pressure equalization in healthy adults. MATERIALS AND METHODS: Adult volunteers with otoscopically healthy ears were enrolled to the study. In a prospective setting, 60 ears of 35 volunteers were ...
Gu K B - - 2011
Articular cartilages and menisci are generally considered to be elastic in the published human knee models, and thus the fluid-flow dependent response of the knee has not been explored using finite element analysis. In the present study, the fluid pressure and site-specific collagen fiber orientation in the cartilages and menisci ...
Harris Joshua D - - 2011
Osteochondral autograft transfer is an accepted treatment for chondral and osteochondral defects of the knee. Synthetic plugs may eventually be used for primary treatment of defects. Currently they are largely used for osteochondral donor site backfill. Placement of osteochondral or synthetic plugs proud leads to articulating surface incongruity, increases in ...
Tanaka Yoshitaka - - 2011
Bone-to-tendon contact in the origin of the common extensor tendons is considered to be one of the causes of lateral epicondylitis. Some factors, including elbow and forearm position, varus stress to the elbow, or contraction of the wrist extensor tendons, are considered to affect this bone-to-tendon contact. However, no studies ...
Di Fazio Domizia - - 2011
The influence of the forces exerted by the perioral musculature on the position of the teeth has been the object of many scientific studies. Of the forces from the soft tissues, those from the tissues in the passive resting state are believed to be more important than forces exerted on ...
Salud Lawrence H - - 2011
We have developed a way to measure performance during a camera-guided rigid bronchoscopy using manikin-based simulation. In an effort to measure contact pressures within the airway during a rigid bronchoscopy, we instrumented pressure sensors in a commercially available bronchoscopy task trainer. Participants were divided into two groups based on self-reported ...
Maclean Julia - - 2011
Objective. The incidence of self-reported dysphagia following a laryngectomy is high (72%). The impact, if any, of a surgical closure technique on swallowing biomechanics and dysphagia severity is not known. To date, there is no recommended standard procedure for pharyngeal reconstruction during laryngectomy surgery. The aim of this study was ...
Liu Xinxin - - 2011
The purpose of the present study was to compare the physiological responses to different types of mental stress encountered in the workplace. Circulatory and central nervous system responses were examined in 8 healthy males by exposing them to 20-min of white noise (80 dB(A)) and 20-min of computer-based mental arithmetic ...
Wilson David F - - 2011
Oxygen dependent quenching of phosphorescence has been used to measure the oxygen pressure in both the vasculature of the microcirculation and the interstitial spaces of resting muscle tissue. Oxygen sensitive molecules were either dissolved in the blood (intravascular space) or micro-injected into the interstitial space and the distributions, histograms, of ...
Wolfe Ralph S - - 2011
Basic techniques for the cultivation of methanogenic archaea in anoxic media, where the O/R potential is maintained below (-) 330mV under a pressurized atmosphere of 20% carbon dioxide, are described.
Wang Tao - - 2011
: Setup computational fluid dynamics (CFD) model of the nasal cavity in patients with Crouzon syndrome analyze inspiratory airflow hydrokinetics of its nasal cavity. After changing the morphosis structure of the nasal cavity by operation, compare the preoperative and postoperative alteration of the airflow field of the nasal cavity and ...
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