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Hirsch Sebastian - - 2012
Noninvasive image-based measurement of intrinsic tissue pressure is of great interest in the diagnosis and characterization of diseases. Therefore, we propose to exploit the capability of phase-contrast MRI to measure three-dimensional vector fields of tissue motion for deriving volumetric strain induced by external vibration. Volumetric strain as given by the ...
Fichtner Jens - - 2012
BACKGROUND AND IMPORTANCE: Epidural blood patch (EBP) is one therapeutic measure for patients suffering from spontaneous intracranial hypotension (SIH) or post-lumbar puncture headaches. It has been proposed that an EBP may directly seal a spinal cerebrospinal fluid (CSF) fistula or result in an increase in intracranial pressure (ICP) by a ...
Park Sung-Min - - 2012
Aortic cross clamping is associated with spinal cord ischemia. This study used a rat spinal cord ischemia model to investigate the effect of distal aortic pressure on spinal cord perfusion. Male Sprague-Dawley rats (n=12) were divided into three groups. In group A (n=4), the aorta was not occluded. In groups ...
Levchenko G - - 2012
The high hydrostatic pressure effect on the magnetic properties of the layered hybrid compounds Cu(2)(OH)(3)(C(n)H(2n+1)CO(2))⋅mH(2)O with distance between magnetic layers of up to 40 Å is studied. It is shown that the temperature of the ferromagnetic ordering decreases linearly with pressure increase. From measurements of susceptibility in the paramagnetic region, using both ...
Komur Mustafa - - 2012
Idiopathic intracranial hypertension is a headache syndrome characterized by elevated intracranial pressure with normal cerebrospinal fluid content, normal cranial imaging, and elevated appearance of the optic disc. We report on a 6.5-year-old boy with complaints of headache and right esotropia causing diplopia. A lumbar puncture indicated an opening cerebrospinal fluid ...
Greenwood Michelle - - 2012
In 2007, the Tissue Viability Society defined tissue viability as: 'A growing speciality that primarily considers all aspects of skin and soft tissue wounds including acute surgical wounds, pressure ulcers and all forms of leg ulceration. However, it is not just wound management, it also covers a wide range of ...
Elliott N S J - - 2012
Syrinxes are fluid-filled cavities of the spinal cord that characterize syringomyelia, a disease involving neurological damage. Their formation and expansion is poorly understood, which has hindered successful treatment. Syrinx cavities are hydraulically connected with the spinal subarachnoid space (SSS) enveloping the spinal cord via the cord interstitium and the network ...
Ji Su-Min - - 2012
Recent genomewide association studies of large samples have identified genes that are associated with blood pressure. The Global Blood Pressure Genetics (Global BPgen) and Cohorts for Heart and Aging Research in Genome Epidemiology (CHARGE) consortiums identified 14 loci that govern blood pressure on a genomewide significance level, one of which ...
Kim Jennifer H - - 2012
Pressure mapping alone insufficiently describes tissue health. Comprehensive, quantitative non invasive assessment is crucial. Interface pressures (IPs) and transcutaneous blood gas levels [transcutaneous tissue oxygen (T(c) PO(2) )] were simultaneously assessed over both ischia and the sacrum to investigate the hypotheses: (i) tissue oxygenation decreases with sustained applied pressure; (ii) ...
Klingeberg T - - 2012
In long-term prevention and in rehabilitation of health of elderly people the recording of vital signs plays an important role. Especially the progress of rehabilitation can be deduced from the recording of an electrocardigram (ECG), blood pressure and body temperature. In this paper we present a wireless coupled recording device ...
Wan Jun - - 2012
Despite substantial advances in orthopaedic surgery, bone nonunion is still a matter of debate for orthopaedic surgeon to provide optimal options on treatment of nonunion. Negative pressure therapy has already been successfully used in dealing with complex kinds of soft tissue healing. Some studies show that negative pressure can induce ...
Dong Zhou-Zhou ZZ Intensive Care Unit, Ningbo Medical Center Lihuili Hospital, Ningbo 315040, - - 2012
In the management of critically ill patients, the assessment of volume responsiveness and the decision to administer a fluid bolus constitute a common dilemma for physicians. Static indices of cardiac preload are poor predictors of volume responsiveness. Passive leg raising (PLR) mimics an endogenous volume expansion (VE) that can be ...
Wang Rui-Lan RL Intensive Care Unit, First People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 201620, - - 2012
Mechanical ventilation is a double-edged sword to acute respiratory distress syndrome (ARDS) including lung injury, and systemic inflammatory response high tidal volumes are thought to increase mortality. The objective of this study is to evaluate the effects of dynamic ventilatory factors on ventilator induced lung injury in a dog model ...
Jagannathan Narasimhan N Department of Pediatric Anesthesiology, Children's Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL 60614, USA. - - 2011
To assess the clinical efficacy of the self-pressurized air-Q ILA™ (ILA-SP).   The purpose of this prospective audit was to evaluate the feasibility of the ILA-SP in clinical practice and generate data for future comparison trials. The ILA-SP is a new first-generation supraglottic airway for children with a self-adjusting cuff ...
Yildirimturk Ozlem - - 2011
PURPOSE: Right ventricular systolic pressure is crucial for both treatment and prognosis of cardiovascular and pulmonary diseases. The proper measurement of right ventricular systolic pressure depends on an accurate estimation of right atrial pressure (RAP). There is no standard method for estimating RAP noninvasively. The purpose of this study was ...
Lechner T J M - - 2011
The insertion of an epidural catheter for labour analgesia may be challenging. This observational study compared pressures during insertion of an epidural catheter in pregnant (n = 35) and non-pregnant (n = 10) women, using an acoustic device for locating the epidural space that also records and stores pressure data during the ...
Vance Amanda - - 2011
Objective  The purpose of this study was to investigate the effect of extubation with the endotracheal tube (ETT) cuff inflated versus deflated on endotracheal fluid volume in normal canine cadavers. Study Design  Prospective randomized blinded controlled cadaver study. Animals  Sixteen adult Beagle cadavers weighing 10.7 ± 1.7 kg (mean ± SD) and <2 years of age. ...
Madhuri Vrisha - - 2011
Documentation of femoral head blood flow before, during and after head preserving surgery is important for safeguarding vascularity to the femoral head and for documentation in patients in whom the blood flow is compromised. Laser Doppler flowmetry and microsensor intracranial pressure (ICP) transducers have been used to satisfactorily depict such ...
Pintaric Tatjana Stopar - - 2011
Epidural analgesia can result in perioperative hypotension in patients having thoracotomy. This randomized prospective study assessed the effects of epidural and paravertebral analgesia on hemodynamics during thoracotomy. Thirty-two patients were randomized to receive either epidural analgesia (n = 16, 0.25% levobupivacaine and 30 μg/kg morphine) or paravertebral block (n = ...
Tobias Joseph D - - 2011
Background: There are reports in the literature regarding the effects of hyperbaric conditions on various medical devices. In the current study we evaluated the performance of an elastomeric infusion device during exposure to a hyperbaric environment. Methods: Nineteen disposable 400-mL On-Q pain ball infusion devices were filled with 0.2% ropivacaine ...
Howard William R - - 2011
It is recommended to maintain cuff pressure (CP) within a defined range of 20 to 30 cm H₂O. Excessive cuff inflation is a recognized risk factor for tracheal injury and stenosis. Insufficient CP can increase the leakage of colonized sub-glottic secretions above the cuff, contribute to air leak, and increase ...
Kolobow Theodor - - 2011
BACKGROUND: The high-volume low-pressure tracheal tube cuffs always form folds upon inflation in the trachea, allowing the passage of heavily colonized mucus into the lungs. METHODS: We designed and developed an elastic, thin-walled prototype endotracheal tracheal tube cuff made of Lycra. In-vitro study: we tested the new prototype cuff, the ...
Belfort Michael A - - 2011
We studied the effect of incremental infusion of fluid volume in a tamponade balloon on intraluminal pressure and uterine blood flow. Following placental delivery, a tamponade balloon was inserted into the uterus and incrementally inflated. Intraluminal pressure was measured at incremental volumes. Ultrasound was used to determine positioning of the ...
Miyashiro Renee M - - 2011
OBJECTIVES:: Tracheal mucosal perfusion is compromised at an endotracheal tube (ETT) cuff pressure of 30 cm H2O, and blood flow is obstructed at a pressure of 50 cm H2O. METHODS:: We measured the change in pressure of air-filled cuffs of 6.0 and 7.5 ETTs and a size 4 laryngeal mask ...
Ishikawa Taisuke - - 2011
Non-invasive and immediate estimation of left atrial pressure (LAP) is very useful for the management of mitral regurgitation (MR), and many reports have assessed echocardiographic estimations of LAP to date. However, it has been unclear of which examination and evaluate article possess the best accuracy for the MR severity. The ...
Chen Ben-Zhen - - 2011
STUDY OBJECTIVE: To investigate intracuff pressure changes in the ProSeal Laryngeal Mask Airway (PLMA) during 50% nitrous oxide (N(2)O) anesthesia. DESIGN: Prospective, randomized study. SETTING: Operating room of a university-affiliated hospital. PATIENTS: 40 ASA 1 and 2 children, aged 2 to 6 years, weighing 10-20 kg, undergoing elective inguinal herniorrhaphy ...
Staffieri Francesco - - 2011
Background:  Most patients affected with Duchenne muscular dystrophy (DMD) present with arrhythmias and cardiomyopathies. Drugs which potentially may induce tachycardia or hypertension could precipitate acute cardiac failure in these patients and should be avoided. Methods:  Thirty anesthesia records of five experimental male golden retriever cross-bred dogs affected with X-linked muscular ...
Brett Marie-Elena - - 2011
There is a need for a simple method to control fluid flow within microfluidic channels. To meet this need, a simple push pin with a polydimethylsiloxane (PDMS) tip has been integrated into microfluidic networks to be placed within the microchannel to obstruct flow. This new valve design can attain on/off ...
Kim Barkhwa - - 2011
Cardio-ankle vascular index (CAVI) and brachial-ankle pulse wave velocity (baPWV) are non-invasive methods for estimating arterial distensibility. The purpose of this study is to evaluate whether CAVI as an index of true arterial stiffness is superior to baPWV based on the percentage change in hemodynamics under general anesthesia. CAVI (segment ...
Firsching Raimund - - 2011
Object Venous ophthalmodynamometry is a technique used to register the pressure within the central retinal vein. Because the outflow of the central retinal vein is exposed to the intracranial pressure (ICP), the pressure of the central retinal vein may be correlated with the ICP. In the absence of adequate statistical ...
Wagner Ann E - - 2011
Objective-To compare cardiovascular effects of sevoflurane alone and sevoflurane plus an IV infusion of lidocaine in horses. Animals-8 adult horses. Procedures-Each horse was anesthetized twice via IV administration of xylazine, diazepam, and ketamine. During 1 anesthetic episode, anesthesia was maintained by administration of sevoflurane in oxygen at 1.0 and 1.5 ...
Ismail Salah A - - 2011
CONTEXT: We hypothesised that the effects of insertion of an i-gel supraglottic airway management device on intraocular pressure (IOP) and haemodynamic variables would be milder than those associated with insertion of a laryngeal mask airway (LMA) or an endotracheal tube. OBJECTIVES: This study evaluated IOP and haemodynamic responses following insertion ...
Perretta Silvana - - 2011
BACKGROUND: An emerging imaging tool, the functional lumen imaging probe (Endoflip; Crospon Ltd, Galway, Ireland), provides a real-time measurement of esophagogastric junction (EGJ) capacity and diameter, which would be of particular interest in functional esophageal surgery such as Heller myotomy and antireflux procedures. This study aimed to demonstrate the intraoperative ...
Shao Yuan - - 2011
Objectives:  To verify the efficacy and to clarify the mechanism of the tension-free vaginal tape retropubic sling for recurrent stress urinary incontinence after Burch colposuspension failure. Methods:  A total of 24 women having tension-free vaginal tape retropubic sling placement for recurrent stress urinary incontinence after a previous failed Burch urethropexy ...
Petruskevicius Juozas - - 2011
A proximal stem centralizer may be beneficial regarding cementing pressures, cement penetration, and stem alignment. We measured these parameters when cementing a mat-surfaced femoral component with and without the use of a proximal stem centralizer. 8 femoral prostheses with proximal centralizers and 8 femoral prostheses without proximal centralizers were cemented ...
Riad Waleed - - 2011
Needle length is an important consideration in the safe conduct of ophthalmic blocks. A shorter needle could be used to insert the local anesthetic before the globe equator in the anterior orbit and to direct the injectable posteriorly using Honan's balloon to produce the desired effect. However, the use of ...
Osugi Toshihiro - - 2011
Background: The increased distribution of crystalloid solution into the interstitial space may decrease the effectiveness of intravascular volume loading in patients. We investigated whether preoperative hydration status after overnight fasting affects interstitial fluid redistribution and thus the magnitude of hypotension during general anesthesia. Methods: Sixty ASA physical status I/II patients ...
Solà Josep - - 2011
There is a strong clinical demand for devices allowing continuous non-invasive monitoring of central blood pressure (BP). In the state of the art a new family of techniques providing BP surrogates based on the measurement of the so-called pulse wave velocity (PWV) has been proposed, eliminating the need for inflation ...
Willenberg T - - 2011
OBJECTIVE: To demonstrate that abdominal pressure impacts venous flow and pressure characteristics. METHODS: Venous pressure at the femoral vein was measured in 6 non-obese subjects (mean BMI 22 ± 2 kg/m(2)) that were exposed to a circumferential cuff placed around the abdominal trunk and inflated to 20 and 40 mmHg. In a second step ...
- - 2011
Renal sympathetic hyperactivity is seminal in the maintenance and progression of hypertension. Catheter-based renal sympathetic denervation has been shown to significantly reduce blood pressure (BP) in patients with hypertension. Durability of effect beyond 1 year using this novel technique has never been reported. A cohort of 45 patients with resistant ...
Dufour Nicolas - - 2011
PURPOSE: To document the relationship between stroke volume (SV) and pulse pressure (PP) recorded at the femoral and aortic sites during volume expansion (VE) in patients in shock. We hypothesized that non-invasively estimated aortic PP would exhibit the same ability as PP recorded invasively at the femoral level to track ...
Daabiss Mohamed - - 2011
BACKGROUND AND OBJECTIVES: Laryngoscopy and tracheal intubation are associated with hemodynamic responses that might increase morbidity and mortality in some patients. Lornoxicam is a nonsteroidal anti-inflammatory drug, which, when added to fentanyl, successfully attenuated the pressor response of intubation. The aim of this study was to evaluate the effect of ...
Karippacheril John G - - 2011
Objectives:  To compare airway sealing pressures, air leak, optimal positioning of the LMA-ProSeal™ and LMA-Classic™ in children. Methods:  A crossover, randomized study was conducted in children aged 6 months-7 years weighing <20 kg scheduled for minor elective surgery under GA with sevoflurane. Either a 1.5 or 2-size LMA-ProSeal™ or LMA-Classic™ was inserted first. ...
Chiumello D - - 2011
PURPOSE: Pleural and abdominal pressure are clinically estimated by measuring the esophageal and bladder or intragastric pressure (IGP), respectively. A new nasogastric polyfunctional catheter is now commercially available, equipped with two balloons in the lower and distal part; this catheter allows simultaneous esophageal pressure (Pes) and IGP measurements and can ...
Aiyagari Ranjit - - 2011
Objective.  Transplant coronary artery disease (TCAD) is the limiting factor to long-term cardiac allograft survival; however, presymptomatic diagnosis remains challenging. To that concern, we evaluated the association of abnormal catheter-derived filling pressures with TCAD in pediatric heart transplant (HTx) recipients. Design, Patients, Outcome Measures.  Data from 52 presymptomatic pediatric HTx ...
Page Jay Blain - - 2011
Abstract Purpose: Alpha blockade has been well described clinically for expulsion of distal ureteral stone. However, the in-vivo effects of α-blockade on ureteral dynamics during stone passage are not clear. We studied the effects of oral alfuzosin on ureteral pressure and peristalsis in a distally obstructed porcine ureter. Methods: Twenty-four ...
Montcriol A - - 2011
Tracheostomy is considered the airway management of choice for patients who require prolonged mechanical ventilation. The development of percutaneous techniques offers many advantages including the ability to perform the procedure in the intensive care unit. The aim of this study was to compare the controlled rotating dilation method (PercuTwist) and ...
Xu Jirong - - 2011
A new series of sediment corers - a Single Tube Gravity Corer and a Multiple Tube Gravity Corer has been developed for taking undisturbed vertical soft sediment samples, and a Hydraulic Pressure Multiple Tube Corer has been preliminarily designed. The Single Tube Gravity Corer can be operated by hand easily ...
Al-Hwiesh Abdullah - - 2011
In peritoneal dialysis (PD), a standard therapy for patients with end-stage renal disease (ESRD), the effects of using the peritoneum as an exchange membrane and of dialysate dwelling within the peritoneal cavity creates some mechanical changes, including an increase in intraperitoneal pressure (IPP) that might lead to intra-abdominal hypertension (IAH) ...
Gibson Douglas N - - 2011
BACKGROUND: There have been no studies of atrial diastolic function following catheter ablation. We observed a few patients with symptomatic left atrial diastolic dysfunction with associated pulmonary hypertension that developed following catheter ablation for atrial fibrillation. Similar findings were described in patients following cardiac surgery and referred to as the ...
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