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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 ...
Nishiyama Tomoki - - 2011
We undertook anesthesia of a 40-year-old woman with body weight of 228 kg and body mass index (BMI) of 90.6 kg/m(2) who was undergoing laparoscopic sleeve gastrectomy. This case may be the largest known patient undergoing general anesthesia in our country. Anesthesia was induced in a 30° head-up position with midazolam, fentanyl, ...
Darwish Ribal S - - 2011
Elevated intracranial intravenous pressure is not routinely measured in clinical practice. Indirect evidence of increased venous pressure is reflected in the size change of the cerebral sinuses and the presence of venous infarctions. The purpose of this study is to evaluate the role of brain perfusion venous time-density curves in ...
Blot Stijn - - 2011
PURPOSE OF REVIEW: Ventilator-associated pneumonia (VAP) remains a frequent and severe complication in endotracheally intubated patients. Strict adherence to preventive measures reduces the risk of VAP. The objective of this paper is to review what has come forward in recent years in the nonpharmacological prevention of VAP. RECENT FINDINGS: It ...
Shin Won-Jung - - 2011
OBJECTIVE: Mayer wave (~10 s) blood pressure (BP) oscillations may represent rhythmic vasomotor activity. However, it remains unclear if volatile anesthetics disturb the coherence between heart rate (HR) and BP rhythms in this region, which may result in improperly affecting BP-HR modulation by the baroreflex, especially when sympathetic stimulation is evoked ...
Ouanes Islem - - 2011
PURPOSE: High-volume low-pressure (HVLP) cuffs on endotracheal tubes do not fully protect the lower airway from leakage of potentially contaminated secretions down the longitudinal folds within the cuff. Here, our purpose was to evaluate potential effects of positive end-expiratory pressure (PEEP), inspiratory effort intensity, and tube characteristics on fluid leakage ...
Korsheed Shvan - - 2011
BACKGROUND: Native arteriovenous fistula (AVF) is the vascular access of choice and its use cf. catheters is associated with sustained reduction in mortality. This may be due to factors beyond dialysis catheter-associated sepsis. This study aimed to investigate the impact of AVF formation on the spectrum of cardiovascular factors that ...
Cooper M A - - 2011
Catheter systems are utilized to measure pressure for diagnosis of voiding dysfunction. In a clinical setting, patient movement and urodynamic pumps introduce hydrostatic and motion artifacts into measurements. Therefore, complete characterization of a catheter system includes its response to artifacts as well its frequency response. The objective of this study ...
Lin Bih-Chern - - 2011
Background: A modified disposable laryngeal mask airway (LMA) (Oro-Pharyngo-Laryngeal Airway Cap, OPLAC™) was developed in our department. In this study, we compared the performance of the LMA Classic™ with that of the OPLAC. Methods: This was a randomized, single-blinded, crossover study involving 60 paralyzed, anesthetized adult patients. Both devices were ...
Dave Mital H - - 2011
Background: Aspiration past the tracheal tube cuff has been recognized to be a risk factor for the development of ventilator-associated pneumonia (VAP). This study investigated the effect of closed tracheal suctioning on aspiration of fluid past the tracheal tube cuff in an in vitro benchtop model. Methods: High-volume low pressure ...
Raghuraman Gayatri - - 2011
Intermittent hypoxia (IH) associated with recurrent apneas often leads to cardiovascular abnormalities. Previously, we showed that IH treatment elevates blood pressure and increases plasma catecholamines (CAs) in rats via reactive oxygen species (ROS)-dependent enhanced synthesis and secretion from the adrenal medulla (AM). Neuropeptide Y (NPY), a sympathetic neurotransmitter that colocalizes ...
Mishra J S - - 2011
A low speed single barrel pellet injector, using a mechanical punch device has been developed for alternative injection in the large helical device. A pellet is injected by the combined operation of a mechanical punch and a pneumatic propellant system. The pellet shape is cylindrical, 3 mm in diameter and ...
Dave M H - - 2011
BACKGROUND: This study investigated the effect of different tube cuff types and airway pressures on fluid leakage past the tracheal tube cuff during suction with a closed tracheal suction system (CTSS). METHODS: Unlubricated high-volume, low-pressure tracheal tube cuffs made from polyvinylchloride (PVC) and polyurethane (PU) with a size 7.5 mm ...
Ji Fu-Hai - - 2011
Surgical stress causes a helper T-cell type 2 (Th2)-dominant status and disturbs the Th1/Th2 cytokine balance. Anesthesia can suppress the stress response to surgery, therefore it may inhibit the imbalance in the Th1/Th2 ratio. In this study, we assessed if propofol anesthesia and sevoflurane anesthesia influence the Th1/Th2 cytokine balance, ...
Yoo Kyung Yeon - - 2011
Endotracheal intubation usually causes transient hypertension and tachycardia. The cardiovascular and arousal responses to endotracheal and endobronchial intubation were determined during rapid-sequence induction of anesthesia in normotensive and hypertensive elderly patients. Patients requiring endotracheal intubation with (HT, n = 30) or without hypertension (NT, n = 30) and those requiring ...
Staykov Dimitre - - 2011
BACKGROUND:: Lumbar drainage (LD) represents a promising treatment strategy for prevention of vasospasm after aneurysmal subarachnoid hemorrhage (SAH). OBJECTIVE:: To report on transient herniation caused by lumbar overdrainage in three patients with severe SAH, treated with early LD within an ongoing feasibility study. METHODS:: Patients with first-time aneurysmal SAH received ...
Kim Pascal - - 2011
BACKGROUND AND OBJECTIVES:: Epidural analgesia is an established method for pain management. The failure rate is 8% to 12% due to technical difficulties (catheter dislocation and/or disconnection; partial or total catheter occlusion) and management. The mechanical properties of the catheters, like tensile strength and flow rate, may also be affected ...
Fiorelli Alfonso - - 2011
Negative-pressure pulmonary edema is an unusual complication mainly associated with general anesthesia. It is caused by excessive negative intrathoracic pressure following a deep inspiration against an acute airway obstruction. The resultant decreased intrathoracic pressure amplifies venous return to the right heart and increases pulmonary capillary wedge pressure that can be ...
Meyer-Schwickerath Rolf - - 2011
Chronic cerebrospinal venous insufficiency (CCSVI) has been postulated as a cause for multiple sclerosis (MS). Venous pressure assessments have not been made. Intracranial venous pressure was assessed using ophthalmodynamometry in 29 MS patients and compared with 28 healthy controls and 19 cases with elevated intracranial pressure (ICP). MS and control ...
Kaneda Toru - - 2011
A 60-year-old male patient with esophageal carcinoma underwent esophagectomy and gastric tube construction with cervical esophagogastrostomy. A tonometer catheter (TonometricsTM Catheter, TONO-16 F, Datex-Ohmeda, Finland) was placed transnasally into the lumen of the gastric tube just after the gastric tube formation. The catheter was connected to a TONOCAP (Datex Ohmeda) ...
Packer Rebecca A - - 2011
Objective-To characterize the intracranial pressure-volume relationship (ICPVR) in dogs by use of an acute frontal-parietal mass lesion model. Animals-7 healthy adult female Beagles. Procedures-Dogs were anesthetized with isoflurane to achieve a surgical plane of anesthesia. A fiberoptic intracranial pressure (ICP) monitor was inserted to a depth of 1 cm in ...
Chadha Neil K - - 2011
To assess whether dynamically modulating endotracheal tube (ETT) cuff pressure, by decreasing it during each ventilatory cycle instead of maintaining a constant level, would reduce the extent of intubation-related laryngotracheal injury. Single-blind, randomized controlled animal study using a previously validated live porcine model of accelerated intubation-related tracheal injury. Animal research ...
Sung Chi Yun - - 2011
A 74-year-old woman underwent posterior lumbar decompressive fusion at L4-5 for treating spondylolisthesis, with the patient under general anesthesia and she was in the prone position. Following attempts to transfuse blood using a pressurized bag, the intravenous infusion site of the left hand along with the noninvasive blood pressure cuff ...
Abbasi Saeed - - 2011
Because the effects of cricoid pressure (CP) on BIS values have not been evaluated, this prospective study was designed to assess the BIS values after application of CP in adult patients during the routine induction of general anesthesia. We randomly allocated 70 patients (ASA-I) aged 18-64 years, listed for elective ...
Chakithandy Sajith - - 2011
The authors report a case of hypertensive emergency (defined as systolic blood pressure >180 mm Hg and diastolic blood pressure >110 mm Hg with end organ damage) following brachial plexus blockade in a hypertensive lady with unstable angina. The authors describe blocking of baroreceptor reflexes by the local anaesthetic as ...
Rohof W O A - - 2010
Background  Transient lower esophageal sphincter relaxations (TLESRs) are the main mechanism underlying gastro-esophageal reflux and are detected during manometric studies using well defined criteria. Recently, high-resolution esophageal pressure topography (HREPT) has been introduced and is now considered as the new standard to study esophageal and lower esophageal sphincter (LES) function. ...
Hamaekers A E W - - 2011
Emergency ventilation through a small-bore transtracheal catheter can be lifesaving in a 'cannot intubate, cannot ventilate' situation. Ejectors, capable of creating suction by the Bernoulli principle, have been proposed to facilitate expiration through small-bore catheters. In this bench study, we compared a novel, purpose-built ventilation ejector (DE 5) with a ...
Goel Apul - - 2011
To describe an alternative technique for removing tenacious and chronic clots by applying stronger suction pressure through the cystoscope sheath in patients who had failed clot evacuation using the traditional Ellik evacuator. In this method, either the 25-F cystoscope sheath or 26-F resectoscope sheath was directly attached with the tubing ...
Derossi Rafael - - 2010
The aim of this study was to evaluate 3 doses of levobupivacaine (LB) epidurally administered in sheep. Six adult male 24-36month-old sheep received levobupivacaine at 3 doses, LB05 (0.05mg/kg), LB15 (0.15mg/kg), and LB25 (0.25mg/kg), and saline solution into the lumbosacral epidural space. Heart rate, arterial blood pressure (systolic, diastolic, and ...
Mohammed Wail - - 2011
A 14-year old X linked congenital hydrocephalus presented with unexplained headaches and vomiting. He had external ventricular drain and intracranial pressure monitoring (ICP). Subsequently, he underwent exploration and removal of previously inserted ventriculoperitoneal (VP) shunts. On retrieval of peritoneal catheters a double knot was noted between his two distal catheters. ...
Zanella Alberto - - 2011
Standard polyvinylchloride (PVC) endotracheal tube (ETT) cuffs do not protect from aspiration across the cuff, a leading cause of ventilator-associated pneumonia (VAP). In a long-lasting in vitro study we compared the effect of different cuff materials (PVC, polyurethane, and guayule latex), shapes (cylindrical, conical), and positive end expiratory pressures (PEEP) ...
Kohama Hanako - - 2011
In the 2005 American Heart Association (AHA) guidelines, the laryngeal mask (LMA) was proposed as an alternative to tracheal intubation for cardiopulmonary resuscitation (CPR). We compared the utility of a newly developed LMA, the Supreme(®) (Supreme), with a conventional LMA, the Soft Seal(®) (Soft Seal). A total of 19 novice ...
Iwata Masato - - 2010
To investigate whether jugular bulb venous oxygen saturation (SjO(2)) values increased with induced hypercapnia or induced hypertension during propofol-based anesthesia for one-lung ventilation (OLV). Prospective clinical study. Operating room at University hospital. 15 adult patients scheduled for elective thoracic procedures in the lateral position. General anesthesia was maintained with propofol ...
Bhatt Skand D - - 2011
The effect of sex on the correlation between oscillometric and central aortic blood pressures (BP) is largely unknown. BP was simultaneously measured in the brachial artery using an oscillometric device and in the aorta using a fluid-filled catheter in 98 patients undergoing coronary angiography. Mean age (±standard deviation) was 58±12 years, ...
Nolen-Walston R D - - 2011
Background: Central venous pressure (CVP) is used in many species to monitor right-sided intravascular volume status, especially in critical care medicine. Hypothesis: That hypohydration in adult horses is associated with a proportional reduction in CVP. Animals: Ten healthy adult horses from the university teaching herd. Methods: In this experimental study, ...
DeMarco Vincent G VG Department of Internal Medicine, University of Missouri School of Medicine, Columbia, MO 65212, - - 2011
Telmisartan, an angiotensin receptor blocker, may have unique benefits as it possesses partial peroxisome proliferator-activated receptor (PPAR)-γ agonist activity in addition to antihypertensive effects. In this study, we test whether treatment with telmisartan ameliorates cardiovascular abnormalities to a greater extent than olmesartan, which has little PPAR-γ activity. The hypertensive rodent ...
Lynch Joseph J JJ - - 2010
The effects of calcitonin gene-related peptide (CGRP) receptor antagonism with CGRP 8-37 on blood pressure changes evoked by the intravenous administration of the vasoactive modulators angiotensin II, phenylephrine, adenosine, nitroglycerine, and sodium nitroprusside were assessed in conscious rats. The effects of sumatriptan and dihydroergotamine on the blood pressure responses evoked ...
Magalhães Luísa - - 2010
Patent foramen ovale (PFO) occurs in 25% of healthy adults. It can lead to paradoxical embolization, migraine and respiratory failure (RF). The authors present a case of RF and orthodeoxia due to a right-to-left shunt via a PFO without previous elevation of right atrial pressure. Closure of the PFO effectively ...
Chew E E F - - 2010
We compared the performance of the LMA Supreme (SLMA) with the I-Gel during anaesthesia in spontaneously breathing adult patients. Ninety patients with American Society of Anesthesiologists physical status I or II were studied in a prospective randomised controlled study. Our primary outcome measure was oropharyngeal leak pressure. We also compared ...
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