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Lee Hyo-Ki - - 2013
This study presents a method for automatic snoring detection from a nasal pressure data. First, a spectrogram analysis was performed in order to obtain information about the spectral characteristic of nasal pressure data. The automatic method is based on a simple signal filtering and short-time energy technique. Fifteen patients were ...
Rohrmeier Christian - - 2013
Although snoring is a common problem, no unequivocal definition yet exists for this acoustic phenomenon. The primary study objective was to investigate whether snoring sounds can be distinguished at all clearly from breath sounds. Our secondary objective was to evaluate whether the sound pressure level in common use and psychoacoustic ...
Collins Clare L - - 2013
AIMS: This study aims to determine if there is a difference in the pharyngeal pressure, measured as a surrogate for continuous positive distending airway pressure, delivered to premature infants between two commonly used heated, humidified high-flow nasal cannulae (HHHFNC) devices: Fisher & Paykel Healthcare HHHFNC and Vapotherm 2000i. METHODS: Pharyngeal ...
Hettige Roland - - 2013
There is little evidence to suggest that bilateral nasal packing increases intra-nasal pressures compared to a single pack (or is well tolerated) for uncontrolled unilateral epistaxis, but it is often performed and justified on those grounds. 15 volunteers were recruited according to strict criteria. Rapid Rhino(®) 5.5 cm anterior packs were ...
Walter Lisa M - - 2013
BACKGROUND: Obstructive sleep apnea (OSA) in adults has been associated with hypertension, low baroreflex sensitivity (BRS), a delayed heart rate response to changing blood pressure (heart period delay [HPD]), and increased blood pressure variability (BPV). Poor BRS may contribute to hypertension by impairing the control of blood pressure (BP), with ...
Fujiu-Kurachi Masako - - 2013
Tongue-hold swallow (THS) has the potential to be a resistance exercise not only for the pharyngeal constrictor but for the tongue muscles. To elucidate the physiological mechanisms of THS, this study investigated intraoral pressure generation during THS in relation to different extents of tongue protrusion. Tongue pressure was measured by ...
Owen Ls - - 2013
Neonatal Nasal Intermittent Positive Pressure Ventilation (NIPPV) is an established mode of non-invasive respiratory support for preterm infants. NIPPV can be generated by standard ventilators, although none currently offer synchronised NIPPV (sNIPPV), which has been shown to have benefits over continuous positive airway pressure (CPAP)(1). The specialised flow driver - ...
Fukuoka Tatsuyuki - - 2013
Although effortful swallow and the Mendelsohn maneuver are commonly used in dysphagia rehabilitation, little is known about their effects on tongue-palate pressure production. The purpose of this study was to investigate the effects of effortful swallow and the Mendelsohn maneuver on tongue pressure production. Fourteen healthy volunteers (10 men, 4 ...
Nakayama E - - 2013
Velopharyngeal closure plays an important role in preventing air pressure leakage during swallowing and phonation from oropharynx to nasopharynx. Levator veli palatini muscle activity is influenced by oral and nasal air pressure, volume of the swallow bolus and postural changes. However, it is unclear how velopharyngeal closing pressure is affected ...
Parke Rachael L - - 2013
Nasal high flow oxygen therapy (NHF) and continuous positive airway pressure (CPAP) are modes of non-invasive respiratory support used to improve respiratory function in multiple patient groups. Both therapies provide positive pressure although this varies during the respiratory cycle. The purpose of this study was to measure and compare the ...
Milési Christophe - - 2013
PURPOSE: The high flow nasal cannula (HFNC) has recently been proposed to support infants with respiratory syncytial virus (RSV)-related respiratory distress. However, in this disease, no physiologic data are currently available on the effects of this device. We assessed the capacity of HFNC to generate positive airway pressure, as well ...
Campos Janna - - 2013
Nasal douches are applied in great number of diseases of the nose and the paranasal sinuses. For this purpose, many different kinds of nasal douching systems have been introduced into the market. The aim of this study was to examine the irrigation characteristics of the current nasal douching systems. In ...
Reid John - - 2013
Recent evidence suggests that women with gestational hypertension (GH) have a high rate of sleep disordered breathing (SDB), and treatment for even marginal SDB may improve blood pressure control in women with GH. We assessed whether the application SDB treatment could improve blood pressure in women with GH. This was ...
Steele Catriona M - - 2013
Tongue-palate pressure is a parameter of considerable interest in the field of dysphagia. Maximum isometric tongue-palate pressures (MIPs) decline in healthy aging and in dysphagia. Functional reserve (FR) is the difference between MIPs and swallowing pressures. Reduced FR is thought to constitute a risk for developing functional swallowing impairments. We ...
Borel Jean Christian - - 2013
In obstructive sleep apnea patients (OSA), continuous positive airway pressure (CPAP) adherence is crucial to improve symptoms and cardiometabolic outcomes. The choice of mask may influence CPAP adherence but this issue has never been addressed properly. To evaluate the impact of nasal pillows, nasal and oronasal masks on CPAP adherence ...
Phillips Craig L - - 2013
Obstructive sleep apnea (OSA) is increasingly being recognized as a major health burden with strong focus on the associated cardiovascular risk. Studies from the last two decades have provided strong evidence for a causal role of OSA in the development of systemic hypertension. The acute physiological changes that occur during ...
Hayashi Hirokazu - - 2013
We evaluated the effects of gel consistency and bolus volume on ingestion in humans. Eight healthy men were asked to ingest liquids, and sample foods of different gel consistencies and volumes, as usual. Tongue pressure against the hard palate was recorded at five points, and bolus flow was recorded using ...
Bushell T - - 2013
In spite of widespread use of nasal CPAP there are comparatively few studies to guide the choice of nasal prongs. To determine whether the Fisher & Paykel Healthcare (FPH) neonatal continuous positive airway pressure (CPAP) interface was effective in providing bubble CPAP when compared to the Hudson prong interface. The ...
Yoon Dae Wui - - 2013
There have been many attempts to find an objective phenotype by Sasang constitutional types (SCTs) on an anatomical, physiological, and psychological basis, but there has been no research on total nasal resistance (TNR) among SCTs. We assessed the value of the TNR in the SCTs classified by an integrated diagnostic ...
Searl Jeff - - 2012
PURPOSE: This study compared articulatory contact pressure (ACP), oral air pressure (Po) and speech acoustics for conversational versus clear speech. The relationship of these measures to listener perception also was assessed. METHOD: Twelve adults with normal speech produced monosyllables in a phrase using conversational and clear speech. Target phonemes were ...
Zhang Chunyan - - 2012
OBJECTIVE:: To determine the accuracy of end-tidal CO2 (PETCO2) obtained in the nose through the Smart CapnoLine and in the pharynx through the modified Filterline H Set with supplemental oxygen at 5 L/min in nonintubated patients undergoing digital subtraction cerebral angiography (DSA). TYPE OF STUDY:: Prospective, observational. PATIENTS:: Twenty patients ...
Mukerji Amit A Division of Neonatology, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ont., - - 2013
Noninvasive ventilation has been used increasingly in recent years to minimize the duration of endotracheal mechanical ventilation in neonates due to its association with lung injury. Nasal high-frequency oscillation (nHFO) is a relatively new noninvasive modality but evidence for its use is limited. The goal of this study was to ...
Luo Jiaying - - 2012
SUMMARY AT A GLANCE: Two titration methods have been used to assess the pressure for long term CPAP treatment. We compared automatic titration with manual titration, the gold standard for determining CPAP pressure, and found that the pressure from automatic titration is consistently higher than the pressure derived from manual ...
Zang Hong-Rui - - 2012
The role of nasal obstruction in the pathogenesis of obstructive sleep apnea/hypopnea syndrome (OSAHS) has been debated for decades. In this prospective study, we compared the pharyngeal aerodynamic characteristics of OSAHS patients and normal people, and investigated the contribution of total nasal airway resistance to the pathophysiology of OSAHS. Computational ...
Bhandari Vineet - - 2012
Multiple randomized controlled trials have suggested that nasal intermittent positive pressure ventilation, compared with nasal continuous airway pressure, prevents extubation failure and may decrease bronchopulmonary dysplasia. This article summarizes these studies and suggests strategies for the use of nasal intermittent positive pressure ventilation in neonates.
Rocha G - - 2012
Objective:To identify variables associated with early nasal continuous positive airway pressure (ENCPAP) failure in preterm neonates less than 30 weeks gestational age.Study Design:Multicenter prospective study including 131 preterm newborns, over a period of 2 years. Patients and respiratory variables were assessed using univariate analysis.Result:Variables associated with ENCPAP failure were: the ...
Bozza P - - 2012
PURPOSE: The best anesthesia for newborns/infants necessitating colorectal surgery remains questionable. Endovenous and locoregional anesthesiological approaches were compared to determine the influence on stress response. METHODS: Patients with anorectal malformations or Hirschsprung's disease were randomized to inhalatory/epidural anesthesia (IPA) or inhalatory/endovenous anesthesia (IEA). Heart rate, blood pressure, oxygen saturation, serum ...
Kanai Rie - - 2012
Abstract Conclusion: Negative middle ear pressure was observed in many patients and otitis media with effusion (OME) developed in 3.3% of ears after surgery under general anesthesia. Gas dynamics in the middle ear cavity induced by nitrous oxide inhalation anesthesia and transient blockage of the eustachian tube induced by surgery ...
Mazaheri-Khameneh Ramin - - 2012
Objective-To compare time to loss of consciousness (LOC) and effective maintenance of anesthesia following intraosseous (IO) and IV administration of propofol in rabbits. Design-Evaluation study. Animals-24 New Zealand White rabbits. Procedures-Rabbits were selected to receive IO (n = 6) or IV (6) bolus administration of 1% propofol (12.5 mg/kg [5.67 ...
Yamamoto Eiji - - 2012
Effects of general anesthesia can be controllable by the ambient pressure. We perform molecular dynamics simulations for a 1-palmitoyl-2-oleoyl phosphatidylethanolamine lipid bilayer with or without xenon molecules by changing the pressure to elucidate the mechanism of the pressure reversal of general anesthesia. According to diffusive nature of xenon molecules in ...
Derikx Roy L E - - 2012
ABSTRACT: Electroconvulsive therapy (ECT) is thought to raise intracranial pressure (ICP) after an increase of blood pressure. In depressed patients (n = 17) treated with ECT, using transcranial Doppler, pulsatility index (PI; as indicator of ICP) and blood pressures were prospectively measured. The highest PI was measured just after anesthesia ...
Langdon Fielding C - - 2012
Changes in arterial pressure due to respiratory phases have been used to predict fluid responsiveness in a number of species and pulse pressure variation (PPV) and systolic pressure variation (SPV) are commonly used. The relationship between PPV and SPV has not been described in horses. To describe and compare PPV ...
Hess L - - 2012
Background  Ephedrine is used in treatment of hypotension during anesthesia. We investigated its effects on the psychomotor recovery and its potential adverse reactions on cardiorespiratory functions in rhesus monkeys. Methods  The monkeys received 50 μg/kg medetomidine, 2.0 mg/kg S-ketamine with 150 IU hyaluronidase i.m. Pulse rate, blood pressure and saturation of haemoglobin were ...
Erken Haydar Ali - - 2012
Inconsistency in consecutive blood pressure values is one of the most frequently observed problems in tail cuff method. The aim of this study was to measure blood pressure using the tail cuff method in rats without heating, anesthesia, and movement restriction. In this study, it has been shown that blood ...
O'Neill Daniel K - - 2012
ABSTRACT: Heel ulcers are clinically challenging. Limited subcutaneous tissue covering the calcaneus bone makes the heel vulnerable to pressure injury. Adequate debridement of fibrotic, infected, and necrotic tissue is essential for healing. The authors report a standardized anesthesia protocol using regional anesthesia with sedation rather than general anesthesia for heel ...
Radke Oliver C - - 2012
BACKGROUND:: Positive-pressure ventilation causes a ventral redistribution of ventilation. Spontaneous breathing during general anesthesia with a laryngeal mask airway could prevent this redistribution of ventilation. We hypothesize that, compared with pressure-controlled ventilation, spontaneous breathing and pressure support ventilation reduce the extent of the redistribution of ventilation as detected by electrical ...
Hedenstierna G - - 2012
Anesthesia is safe in most patients. However, anesthetics reduce functional residual capacity (FRC) and promote airway closure. Oxygen is breathed during the induction of anesthesia, and increased concentration of oxygen (O(2) ) is given during the surgery to reduce the risk of hypoxemia. However, oxygen is rapidly adsorbed behind closed ...
Hwang J W - - 2012
BACKGROUND: Maternal hypotension occurs commonly during cesarean delivery under spinal anesthesia. We evaluated whether hypotension due to aortocaval compression could be prevented by maintaining a lateral position after an intrathecal injection. METHODS: Eighty-six women undergoing elective cesarean delivery were enrolled. Spinal anesthesia was conducted in the right lateral position using ...
Fulambarker Ashok - - 2012
Yoga is adjunctively utilized outside the United States in the treatment of a variety of diseases, including chronic obstructive pulmonary disease (COPD), but there are no studies assessing its adjunctive efficacy in the United States. We prospectively evaluated the effects of yoga training on the quality of life (QOL) and ...
Gulsoy Kemal K Anaesthesia and Reanimation Department, Ankara Numune Training and Research Hospital, Altindag, Ankara, - - 2012
To compare the effect of dexmedetomidine and fentanyl on hemodynamic changes in chronic male smokers. This is a prospective, randomized, blinded study. Were selected 60 chronic male smokers (aged 16 to 60 years). The patients were randomly divided into two groups: Group D (n=30) received 1μg.kg(-1) dexmedetomidine and Group F ...
Nair Jayasree - - 2012
We report a case study of a term neonate presenting with oxygen desaturation without respiratory distress or acidosis, despite receiving 100% oxygen through a nasal cannula. Echocardiogram showed evidence of persistent pulmonary hypertension of the newborn (PPHN). She was successfully treated with inhaled nitric oxide (iNO) via nasal cannula without ...
Boback Scott M - - 2012
Many species of snakes use constriction-the act of applying pressure via loops of their trunk-to subdue and kill their prey. Constriction is costly and snakes must therefore constrict their prey just long enough to ensure death. However, it remains unknown how snakes determine when their prey is dead. Here, we ...
Hockel Konstantin - - 2012
Anesthesia is indispensable for in vivo research but has the intrinsic potential to alter study results. The aim of the current study was to investigate the impact of three common anesthesia protocols on physiological parameters and outcome following the most common experimental model for subarachnoid hemorrhage (SAH), endovascular perforation. Sprague-Dawley ...
Koga Seiji - - 2012
Objective Abnormal left ventricular (LV) geometry, especially concentric hypertrophy, is associated with cardiovascular morbidity and mortality. The aim of this study was to evaluate the impact of obstructive sleep apnea syndrome (OSAS) and the effects of nasal continuous positive airway pressure (CPAP) on the LV geometric patterns. Methods The LV ...
Yi Yong - - 2012
To train Tibetan monkey (Macaca thibetana) for intraocular pressure (IOP) measurement in conscious state and obtain normal IOP in conscious Tibetan Macaque. The training was based on award-conditioned behavior. Food stimulation and human-animal interaction were used in this training. Trained Tibetan monkeys calmly accepted IOP measurement by the TonoVet® rebound ...
Jung Jun-Young - - 2012
Prolonged tourniquet inflation produces a hyperdynamic cardiovascular response. We investigated the effect of continuous remifentanil infusion on systemic arterial pressure, heart rate, and cardiac output changes during prolonged tourniquet use in elderly patients under sevoflurane/N(2)O general anesthesia. Thirty female patients scheduled for knee replacement arthroplasty were infused with either remifentanil ...
Jiang Hai - - 2011
Difficult airway remains not only a challenge to the anesthesiologists, but also a life-threatening event to the patients. Awake intubation is the principal choice to deal with difficult airway, and a key point for awake intubation is airway topical anesthesia. Yet, so far there is no ideal topical anesthesia approach ...
Searl Jeff - - 2013
Objectives : (1) To compare oral pressure and nasal airflow in 3- to 5-year-olds versus older children and adults; (2) to describe stability of these measures in 3- to 5-year-olds at two recording times; and (3) to report participation rates of 3- to 5-year-olds for the aerodynamic protocol. Design : ...
Liu Shan - - 2011
1. Cardiorenal syndrome (CRS) describes the primary dysfunction in either the kidney or heart that initiates the combined impairments of both organs. The heart and the kidney exert reciprocal control of the respective function to maintain constant blood volume and organ perfusion under continuously changing conditions. 2. The pathophysiology of CRS is ...
Evangelista Janaina S A M - - 2011
Crotalus durissus cascavella is a snake native of northeastern Brazil. The aim of the study was to investigate the effects of C. d. cascavella venom on rat mean arterial pressure and vascular reactivity in the mesenteric vascular bed. The venom evoked a dose-dependent decrease in mean arterial pressure, cardiac and ...
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