Search Results
Results 601 - 650 of 2577
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Hof Janny R - - 2012
OBJECTIVE: Deviant middle ear pressure has a negative effect on the forward and backward transmission of stimulus and emissions through the middle ear. Resolving this deviant middle ear pressure is expected to lead to better middle ear transmission and, as a result of this, stronger otoacoustic emissions, which are better ...
Yoon Hyun Ju - - 2012
Although the white-coat effect (WCE) is not rare, its detection is often difficult in treated hypertensive patients. The aim of this study was to elucidate the factors that affect and predict the WCE in treated hypertensive patients in Korea. A total of 1087 outpatients (mean age: 57 ± 10 y; ...
Pedersen Torben B - - 2012
BACKGROUND: Lung sealants are often used to prevent alveolar air leaks after lung resection surgery. Some sealants have shown to be effective in clinical studies, but extensive comparative evaluation has not yet been conducted. We aimed to evaluate different sealant burst pressures in an ex vivo model mimicking air leakage ...
Kawabe Hiroshi - - 2012
The number of home blood pressure (BP) measurements on one occasion has continued to be discussed. Therefore, we evaluated the variability of the first and second measurements on one occasion. The subjects except hypertensive patients (393 males, 212 females; mean age 38.7 y) were recruited from one company. Home blood ...
Kylhammar D - - 2012
AIM: Hypoxic pulmonary vasoconstriction (HPV) causes pulmonary hypertension that may lead to right heart failure. We hypothesized that the COX-2 inhibitor nimesulide and the thromboxane A (2) receptor antagonist daltroban would attenuate HPV. METHODS: Haemodynamic measurements and blood sampling were performed in 18 anaesthetized, mechanically ventilated pigs, with mean ± SEM weights ...
Arramreddy Rohini - - 2012
Recent studies have focused on the association between dialysate sodium (Na(+)) prescriptions and interdialytic weight gain (IDWG). We report on a case series of 13 patients undergoing conventional, thrice-weekly in-center hemodialysis with an individualized dialysate Na(+) prescription. Individualized dialysate Na(+) was achieved in all patients through a stepwise weekly reduction ...
Montaniel Kim Ramil C - - 2012
Heparan sulfate proteoglycans are abundant matrix and membrane molecules. Smooth muscle specific deletion of one heparan sulfate biosynthetic enzyme, N-deacetylase-N-sulfotransferase1 leads to decreased vascular smooth muscle cell proliferation, and vascular wall thickness. We hypothesized that this may lead to changes in blood pressure in conscious mice. Blood pressure was measured ...
Mohiuddin Mohammad W - - 2012
The mechanism of the well-documented increase in aortic pulse pressure (PP) with age is disputed. Investigators assuming a classical windkessel model believe that increases in PP arise from decreases in total arterial compliance (C(tot)) and increases in total peripheral resistance (R(tot)) with age. Investigators assuming a more sophisticated pulse transmission ...
Owens Robert L - - 2012
Esophageal pressure (P(Es)) can be used to approximate pleural pressure (P(pl)) and might be clinically useful, particularly in the obese e.g., to guide mechanical ventilator settings in critical illness. However, mediastinal artifact (the difference between true P(pl) and P(Es)) may limit acceptance of the measurement, and reproducibility of P(Es) measurements ...
van Dijk Suzanne - - 2012
BACKGROUND: the human body composition changes with advances in age. Particularly, the central fat amount increases. Because the central fat mass is a cardiovascular risk factor, we investigated whether in an elderly population, fat mass (measured at different bodily locations) is associated with peripheral and central blood pressure components. METHODS: ...
Conway Miriam - - 2012
PURPOSE.: Sturge-Weber syndrome (SWS) is a condition often associated with facial cutaneous angioma, vascular malformations in the brain, and ocular anomalies such as glaucoma. Reduced cerebral blood flow and ischemia have been well documented. Less is known about ocular blood flow despite the frequent associations between altered hemodynamics and the ...
Chapman David G - - 2012
Baseline ventilation heterogeneity is associated with airway hyperresponsiveness (AHR) in asthma; however, it is unknown whether increased baseline ventilation heterogeneity leads to AHR or both are independent effects of similar disease pathophysiology. Reducing functional residual capacity (FRC) in healthy subjects increases baseline ventilation heterogeneity and airway responsiveness, but the relationship ...
Krittian Sebastian B S SB Oxford University Computing Laboratory, University of Oxford, - - 2012
The evaluation of cardiovascular velocities, their changes through the cardiac cycle and the consequent pressure gradients has the capacity to improve understanding of subject-specific blood flow in relation to adjacent soft tissue movements. Magnetic resonance time-resolved 3D phase contrast velocity acquisitions (4D flow) represent an emerging technology capable of measuring ...
Burdzińska Anna - - 2012
Objectives:  To describe a novel animal model of intrinsic sphincter deficiency. Methods:  The study was carried out on 10 female pigs. Injury to the urethral sphincter was induced by distension of the urethra. This was obtained by using the balloon of an 18-F Dufour catheter for 5 min followed by its ...
Murakami Motohiko - - 2012
The determination of the chemical composition of Earth's lower mantle is a long-standing challenge in earth science. Accurate knowledge of sound velocities in the lower-mantle minerals under relevant high-pressure, high-temperature conditions is essential in constraining the mineralogy and chemical composition using seismological observations, but previous acoustic measurements were limited to ...
Aletti Federico - - 2012
Mild lower body negative pressure (LBNP) has been utilized to selectively unload cardiopulmonary baroreceptors, but there is evidence that arterial baroreceptors can be transiently unloaded after the onset of mild LBNP. In this paper, a black box mathematical model for the prediction of diastolic blood pressure (DBP) variability from multiple ...
Visweswaran Gautam K - - 2012
Cardiac tamponade represents a medical emergency necessitating emergent pericardiocentesis. Use of two-dimensional echocardiography (ECHO) has improved the safety of pericardiocentesis, but procedural challenges may occur when performed in an emergent manner outside of the catheterization laboratory without availability of fluoroscopy and readily available pressure transducers. The most problematic situation is ...
Ellinger Sabine - - 2012
BACKGROUND: Four meta-analyses of randomized controlled trials (RCTs) based on the classical random-effects model showed that cocoa consumption can reduce systolic blood pressure (SBP) and diastolic blood pressure (DBP). Because epicatechin is suggested to be responsible for the treatment effect, changes in blood pressure should depend on the dose of ...
Soong Wen-Jue - - 2012
Objective: To evaluate the efficacy of a simple and novel cardiopulmonary resuscitation (CPR) technique, nasopharyngeal oxygen with intermittent nose-close and abdomen-compression (NPO(2) -NC-AC) in an animal model. Design: Prospective piglet study. Setting: In an animal physiology laboratory of a medical university. Piglets: Six healthy piglets <14 days old. Interventions: Spontaneous ...
Takeda Yoshimasa - - 2012
BACKGROUND:: Pharyngeal cooling decreases brain temperature by cooling carotid arteries. This study was designed to evaluate the principle of pharyngeal cooling in monkeys and humans. METHODS:: Monkeys (n = 10) were resuscitated following 12 min of cardiac arrest. Pharyngeal cooling (n = 5), in which cold saline (5°C) was perfused ...
Henao-Guerrero Natalia - - 2012
Objective-To identify ventilatory protocols that yielded good image quality for thoracic CT and hemodynamic stability in cats. Animals-7 healthy cats. Procedures-Cats were anesthetized and ventilated via 4 randomized protocols (hyperventilation, 20 seconds [protocol 1]; single deep inspiration, positive inspiratory pressure of 15 cm H(2)O [protocol 2]; recruitment maneuver [protocol 3]; ...
Tescher Ann N - - 2012
To improve identification of risk factors for pressure ulcer development and enhance targeted interventions and prevention strategies. The records of 12,566 adult patients hospitalized in intensive or progressive care units within Mayo Clinic were analyzed. Inclusion criteria were Braden Scale of 18 or less during the hospitalization; exclusion criteria were ...
Rosholm Jens-Ulrik - - 2012
Background. Auscultatory measurement using a sphygmomanometer has been the predominant method for clinical estimation of blood pressure, but it is now rapidly being replaced by oscillometric measurement. Objective. To compare blood pressure by auscultatory and oscillometric measurements in patients ≥ 80 years. Method. 100 patients had blood pressure measured by auscultation ...
Rivas-Tumanyan Sona - - 2012
Background: Current scientific evidence addressing the relation between periodontitis and hypertension is limited to a few studies producing inconsistent results. Methods: All participants of an on-going representative cohort of Puerto Rican elderly who were 70 years and older and residing in San Juan metropolitan area were invited to this cross-sectional ...
Loerakker Sandra - - 2012
Deep pressure ulcers represent a major problem for individuals with spinal cord injury (SCI), with the initial damage often hidden underneath intact skin. Accordingly, early detection is difficult and treatment is problematic. In the present study, circulatory levels of biomarkers for muscle damage were investigated to explore their potential in ...
Lovati C - - 2012
Following an allostatic perspective, episodic migraine (M) may be considered as an adaptive behavioural response to endogenous or exogenous stressors, while its progression to a daily or nearly daily form (chronic migraine) may represent the failure of adaptive strategies. Multiple factors may enhance the progression/chronification of M, and among these ...
Villamarin Adan - - 2012
The purpose of our study is to develop and validate a methodology to measure the compliance of the vascular network in the eye using biomechanical parameters, namely arterial pressure, intraocular pressure (IOP), and ocular compliance of the eyeball (OC). In vitro experiments were conducted on 6 freshly enucleated rabbit eyes. ...
Tateiwa Naoyuki - - 2012
A miniature ceramic anvil high pressure cell (mCAC) was earlier designed by us for magnetic measurements at pressures up to 7.6 GPa in a commercial superconducting quantum interference magnetometer [N. Tateiwa et al., Rev. Sci. Instrum. 82, 053906 (2011)]. Here, we describe methods to generate pressures above 10 GPa in ...
Arany-Tóth Attila - - 2012
Subarachnoid pressure recordings were made during atlanto-occipital myelography in 45 dogs with clinical signs of spinal disease. Iohexol was injected at a dosage of 0.3 ml/kg body weight and simultaneous pressure values were recorded in the cerebellomedullary cistern. The mean subarachnoid pressure was 9 ± 3 mmHg before and 70 ...
Chung Kevin K - - 2012
ABSTRACT: Early detection and management of shock is important in optimizing clinical outcomes. One regional marker, sublingual capnography (SLCO2), is particularly appealing as redistribution of blood flow away from the sublingual mucosa can happen very early in the compensatory phase of hypovolemic shock. Our objective was to test the hypothesis ...
Davydov Dmitry M - - 2012
Previous studies are inconclusive with regard to the relationship between variations in blood pressure (BP) and affect. In the present study we evaluated the hypothesis that inconsistencies in previous findings may be attributed to the moderating role of variations in psychological or physical conditions during BP measurement. Change in depressive ...
Cipollini Franco - - 2012
Much evidence suggests sexual dimorphism in the relationship linking blood pressure (BP) to both left ventricular mass (LVM) and geometry in hypertension. To better evaluate gender-associated characteristics in the relation BP-LVM among newly diagnosed hypertension (24-h average ambulatory BP monitoring, ABPM, > 125/80 mmHg), we measured indexed LVM and relative wall ...
Cecconi M - - 2012
In this study we quantify the ability of dynamic cardiovascular parameters measured by the PulseCOTM algorithm of the LiDCO™plus monitor to predict the response to a fluid challenge in post-operative patients. Surgical patients, admitted to the Intensive Care Unit from the operating theatre were monitored with the LiDCO™plus system. A ...
Grözinger Gerd - - 2012
BACKGROUND: We investigated in a porcine model of anhepatic acute liver failure (ALF), the value of two parameters describing cerebrovascular autoregulatory capacity, pressure reactivity index (PRx) and brain tissue oxygen pressure reactivity (ORx), regarding their power to predict the development of intracranial hypertension. METHODS: In six pigs, hepatectomy was performed. ...
Sancini Angela - - 2012
: To verify whether the occupational hazards in the rotogravure industry can be associated with cardiovascular effects. : We evaluated cardiovascular parameters and audiometric tests and analyzed noise, solvents, and shift work in 44 exposed and 44 unexposed workers. : Unlike unexposed workers, the rotogravure workers showed significant increase of ...
Bejan-Angoulvant Theodora - - 2012
Objective. To identify markers (phenotypic, genetic, or environmental) of blood pressure (BP) response profiles to angiotensin converting enzyme inhibitors (ACEIs) and diuretics. Methods. IDEAL was a crossover (two active and two wash out phases), double-blind, placebo-controlled trial. Eligible patients were untreated hypertensive, aged 25 to 70. After two visits, patients ...
Stafiej Joanna M - - 2012
: Five pressure ulcers (stage III and stage IV) were successfully treated with collagen sponges filled with gentamicin. : All ulcers occurred in an immobile 94-year-old woman with advanced dementia. One of the pressure ulcers, located on the patient's sacrum, was considered life-threatening due to size and depth. All ulcers ...
Kauric-Klein Zorica - - 2012
Hypertension in patients on hemodialysis (HD) contributes significantly to their morbidity and mortality. This study examined whether a supportive nursing intervention incorporating monitoring, goal setting, and reinforcement can improve blood pressure (BP) control in a chronic HD population. A randomized controlled design was used and 118 participants were recruited from ...
Jeong Hyejin - - 2012
We examined the effects of different anesthetics on cerebral oxygenation and systemic hemodynamics in patients undergoing surgery in beach chair position (BCP). Jugular venous bulb oxygen saturation (SjvO2) and regional cerebral tissue oxygen saturation (SctO2) were determined while patients were placed from the supine to BCP. Whether SctO2 and SjvO2 ...
Black Joyce - - 2012
PURPOSE:: The primary objective of this study was to compare facility-acquired pressure ulcer incidence and progression of pressure ulcers present on admission in critically ill patients, using 2 different support surfaces. DESIGN:: We completed a comparison cohort study in a surgical intensive care unit (ICU). SUBJECTS AND SETTING:: The study ...
Cushman William C - - 2012
Home blood pressure (BP) monitoring may enhance assessment of BP control. In this 16-week study, men and women 70 years or older with systolic BP between 150 and 200 mm Hg were randomized to receive valsartan/hydrochlorothiazide (V/HCTZ) 160/12.5 mg (n = 128), HCTZ 12.5 mg (n = 128), or V 160 ...
Miyashita Hiroshi - - 2012
Central aortic blood pressure (CBP) is increasingly considered a better cardiovascular prognostic marker than conventional cuff brachial blood pressure. Because CBP cannot be directly measured noninvasively, it has to be estimated from peripheral pressure pulses. To assess estimated CBP appropriately, the accuracy and features of the estimation method should be ...
Guervilly Christophe - - 2012
To evaluate the effect of mean airway pressure under high-frequency oscillatory ventilation on right ventricular function. Prospective randomized study. Intensive care unit of a tertiary care hospital. Sixteen consecutive patients within the first 48 hrs of mainly pulmonary acute respiratory distress syndrome. After a 6-hr-period of protective conventional mechanical ventilation, ...
Shigeta T - - 2012
Grafts from donation after cardiac death (DCD) will greatly contribute to the expand the donor pool. However, these grafts may require the development of the preservation methods because of primary nonfunction and severe ischemic bile duct injury. Porcine livers were perfused with a newly developed machine perfusion (MP) system. Each ...
Shimizu Motohiro - - 2012
Asleep blood pressure (BP) has been shown to better reflect cardiovascular risk than awake BP in hypertensive patients. This study investigated the correlation of brain natriuretic peptide (BNP) to asleep BP during antihypertensive treatment. In the Japan Morning Surge-Target Organ Protection (J-TOP) study, which was an open-label multicenter trial to ...
Soanker Radhika - - 2012
Blood pressure (BP) reduction is the major determinant of benefit provided by antihypertensive treatment. Although different drugs reduce peripheral BP to some extent, there may be a significant difference in their effect on central BP reduction. It has been shown that beta-blockers are efficient in reducing peripheral, but not central ...
Cymerys Maciej - - 2012
Hypertension is a powerful risk factor for cardiovascular disease and frequently occurs in conjunction with obesity. Accumulative evidence suggests a link between inflammation and hypertension. The aim of study was to evaluate whether blood pressure, obesity and smoking may influence acute-phase response. Ninety-two patients with essential hypertension and 75 healthy ...
Margolius David - - 2012
Poor blood pressure control is common in the United States. We conducted a study to determine whether health coaching with home titration of antihypertensive medications can improve blood pressure control compared with health coaching alone in a low-income, predominantly minority population. We randomized 237 patients with poorly controlled hypertension at ...
Vogel-Claussen Jens - - 2012
To evaluate if left ventricular outflow tract/aortic valve (LVOT/AO) diameter ratio measured by cardiac magnetic resonance (CMR) imaging is an accurate marker for LVOT obstruction in patients with hypertrophic cardiomyopathy (HCM) compared to Doppler echocardiography. In all, 92 patients with HCM were divided into three groups based on their resting ...
Brenner Megan - - 2012
Vital signs, particularly blood pressure, are often manipulated to maximize perfusion and optimize recovery from severe traumatic brain injury (sTBI). We investigated the utility of automated continuously recorded vital signs to predict outcomes after sTBI. Sixty patients with head Abbreviated Injury Scale score ≥ 3, age >14 years, "isolated" TBI, ...
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