The effects of age and sex on the human-body responses to -50 torr LBNP were investigated in subjects who have undergone LBNP tests at the Kennedy Space Center.
TY - JOUR. T1 - Effects of heat stress on dynamic cerebral autoregulation during large fluctuations in arterial blood pressure. AU - Brothers, R. Matthew. AU - Zhang, Rong. AU - Wingo, Jonathan E.. AU - Hubing, Kimberly A.. AU - Crandall, Craig G.. PY - 2009/12/1. Y1 - 2009/12/1. N2 - Impaired cerebral autoregulation during marked reductions in arterial blood pressure may contribute to heat stress-induced orthostatic intolerance. This study tested the hypothesis that passive heat stress attenuates dynamic cerebral autoregulation during pronounced swings in arterial blood pressure. Mean arterial blood pressure (MAP) and middle cerebral artery blood velocity were continuously recorded for ∼6 min during normothermia and heat stress (core body temperature = 36.9 ± 0.1°C and 38.0 ± 0.1°C, respectively, P , 0.001) in nine healthy individuals. Swings in MAP were induced by 70-mmHg oscillatory lower body negative pressure (OLBNP) during normothermia and at a sufficient lower body negative pressure ...
The purpose of this study was to identify the dose-dependent effects of heat strain and orthostasis (via lower-body negative pressure; LBNP), with and without mild hypohydration, on systemic function and cerebral perfusion. Eleven males (Mean ±SD: 27 ±7 y; body mass 77 ±6 kg), resting supine in a water-perfused suit, underwent progressive passive heating [0.5°C increments in core temperature (Tc, oesophageal to +2.0°C)] whilst euhydrated (EUH) or hypohydrated (HYPO, 1.5-2% body mass deficit). At each thermal state, mean cerebral artery blood velocity (MCAvmean, Transcranial Doppler), partial pressure of end-tidal carbon dioxide (PETCO2), heart rate (HR) and mean arterial blood pressure (MAP, photoplethysmography) were measured continuously during LBNP (0, -15, -30, -45 mm Hg ...
These findings demonstrate a correlation between decreases in CO and CBVF during normotensive hypovolaemia (NTH), which is in disagreement with previous studies using transcranial Doppler to measure CBVF. The findings do not support previous descriptions of relative sparing of CBVF due to compensatory reductions in cerebrovascular resistance in response to NTH 1. This difference is likely to reflect the different methods of cerebral blood flow measurement. MRI-PCA allows direct volume flow measurements from the carotid and basilar arteries whereas TCD uses flow velocity in the middle cerebral arteries as a surrogate of volume flow. This potentially important discrepancy requires further investigation to elucidate the mechanisms controlling CBF responses to nth. ...
Compared with eumenorrhoeic women, exercise-trained women with functional hypothalamic amenorrhoea (ExFHA) exhibit low heart rates (HRs) and absent reflex renin-angiotensin-system activation and augmentation of their muscle sympathetic nerve response to orthostatic stress. To test the hypothesis that their autonomic HR modulation is altered concurrently, three age-matched (pooled mean, 24 ± 1 years; mean ± S.E.M.) groups of women were studied: active with either FHA (ExFHA; n=11) or eumenorrhoeic cycles (ExOv; n=17) and sedentary with eumenorrhoeic cycles (SedOv; n=17). Blood pressure (BP), HR and HR variability (HRV) in the frequency domain were determined during both supine rest and graded lower body negative pressure (LBNP; -10, -20 and -40 mmHg). Very low (VLF), low (LF) and high (HF) frequency power spectra (ms(2)) were determined and, owing to skewness, log10-transformed. LF/HF ratio and total power (VLF + LF + HF) were calculated. At baseline, HR and systolic BP (SBP) were lower ...
Markers capable of dynamically assessing sympathetic vasomotor and cardiac drive in daily life conditions would be important diagnostic tools.62 However, the reliability of BP (or HR) powers around 0.1 Hz as specific sympathetic markers has recently been questioned by several investigators. Their data come not only from animal experiments, which have the problem of a safe extrapolation to humans, but also from healthy subjects and patients with cardiovascular disease. For example, Cohen et al63 reported that in healthy volunteers a reflex increase in sympathetic nerve traffic (measured directly by microneurography) and in vascular resistance (measured by forearm venous occlusion plethysmography) induced by lower body negative pressure was not accompanied by a similar consistent increase in 0.1-Hz HR power. Saul et al44 found that in normotensive humans the reflex increase in sympathetic nerve traffic (microneurography) induced by intravenous infusion of nitroprusside was associated with an ...
China Medical Apparatus Negative Pressure Suction Liner Equipment, Find details about China Storage of Sputum, Negative Pressure from Medical Apparatus Negative Pressure Suction Liner Equipment - Wuhan Uni-Pharma Bio-Tech Co., Ltd.
Principle the material is crushed by the appliion of the pressurehe mill works on the principle of compression of the material by a dust removal blower will generate negative pressure at the inlet and outlet of the grinder to prevent dust and radiating the heat in the machine,2 more roll grinding measurement from up running machine.. ...
Walid Mari and Coll conducted a clinical trial about the use of Negative pressure and natural porcine extracellular matrix in stage 4 pressure injuries.
Find Negative Pressure Fans now at TheFireStore, along with 69,999 other first responder items, including gear, apparel, equipment, tools and more.
Montreal Canadiens right-winger Brendan Gallagher will be sidelined two to three weeks with a lower-body injury. The 23-year-old, who has 35 points in 49 games, missed 17 games earlier this season with two fractured fingers on his left hand.
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An anterolateral view (right side) of the blood supply of the lower body. The surface anatomy of the body is semi-transparent and tinted grey. - Stock Image F001/5567
A posterior view of the blood supply of the lower body. The surface anatomy of the body is semi-transparent and tinted grey. - Stock Image F001/4435
I am back yay :) with a new lower body workout. This workout was done as an interval training and it only takes 22 minutes. I am so happy that so many of you guys had joined inn on the No Sugar Challenge for this week!!! But since we are doing this challenge the workouts this week will be just a little less intense than usual, the reason for that is not only because we are doing the No Sugar Challenge but also because we need to periodize our training.
NEW FINDINGS: What is the central question of this study? Orthostatic stress is mostly caused by venous blood pooling in the lower limbs. Venous distension elicits sympathetic responses, and increased distension speed enhances the cardiovascular response. We examine whether lower limb blood pooling rate during lower body negative pressure is linked to orthostatic intolerance. What is the main finding and its importance? A similar amount of blood was pooled in the lower limb, but at a slower rate in women who developed signs of orthostatic intolerance. The difference in blood pooling rate increased with orthostatic stress and was most prominent at a presyncope-inducing level of lower body negative pressure. The findings have implications for the pathophysiology as well as treatment of orthostatic intolerance. Vasovagal syncope is common in young women, but its aetiology remains elusive. Orthostatic stress-induced lower limb blood pooling is linked with central hypovolaemia and baroreceptor ...
To evaluate the role of ventricular baroreceptors in humans, we studied the effects of propranolol on reflex vasoconstrictor responses to simulated orthostatic stress. We measured forearm vascular resistance in 10 normal males in the control state and during lower body negative pressure (LBNP) at -10 and -40 mm Hg before and after propranolol (0.1 mg/kg i.v.). Baseline forearm vascular resistance showed no significant change: 23.9 +/- 3.4 U (+/- SEM) before vs 28.0 +/- 0.5 U after propranolol. Reflex increases in forearm vascular resistance during LBNP at -10 and -40 mm Hg were 5.2 +/- 1.2 and 21.2 +/- 6.6 U before and 3.4 +/- 1.2 and 10.6 +/- 2.2 U, respectively, after propranolol. Thus, propranolol significantly (p less than 0.05) reduced responses to LBNP at -40 mm Hg. In contrast to the effects with LBNP, propranolol did not attenuate increases in forearm vascular resistance during the cold pressor test and handgrip, thus excluding a nonspecific depression of reflexes. We also studied the ...
1. To determine whether activation of the left ventricular C-fibre mechanoreceptors initiates the vasodepressor reflex that often causes syncope, we exposed six orthotopic cardiac transplant patients and six matched, healthy control subjects to progressively increasing lower body negative pressure until the onset of vasodepressor responses.. 2. There was no significant difference (P = 0.78) between the central hypovolemia tolerances of the cardiac transplant and the control groups.. 3. The decrease in systolic blood pressure before the onset of vasodepressor reflexes was greater in the cardiac transplant group. The cardiac transplant group did not maintain diastolic blood pressure during central hypovolaemia. From baseline to the onset of vasodepression, there were no differences in leg circumference, forearm blood flow and forearm vascular resistance responses between the two groups.. 4. We conclude that the left ventricular mechanoreceptors may not be the primary afferent trigger for ...
Naloxone, an opioid antagonist, augments baroreflex mechanisms in animals; this occurrence suggests that endogenous opioids blunt baroreflex responses. Limited human studies suggest an inhibitory action of endogenous opioids on baroreflex-mediated vagal responses during arterial baroreceptor deactivation. To evaluate the potential effect of endogenous opioids on cardiopulmonary baroreflex mechanisms in humans, we measured arterial and central venous pressures, heart rate, and efferent muscle sympathetic nerve activity (MSNA, by peroneal microneurography) during unloading of cardiopulmonary baroreceptors with incremental lower body negative pressure (LBNP, from 0 to -15 mm Hg) and during the cold pressor test in 21 normal subjects (aged 24 +/- 1 [mean +/- SEM] years). In 14 subjects, we performed LBNP before and after naloxone (0.15 mg/kg i.v.) and placebo (n = 11) on separate days. In six of these 14 subjects and an additional seven subjects (n = 13), studies were also performed before and after ...
0049] FIG. 5A and FIG. 5B demonstrate the front views of an oral apparatus according to FIG. 4A and FIG. 4B being used as a negative pressure sleep apnea treatment device. The oral apparatus further comprises a fluid conduit 280. The first end of the fluid conduit 280 is attached to the lower attaching component 220 and enters a users oral cavity. The second end of the fluid conduit 280 is connected to a negative pressure source 290 (not shown). The negative pressure source 290 can draw air out of oral cavity and thus produce a negative pressure environment to pull the tongue, soft palate and other soft tissue forward to maintain the airway patency reducing snoring and apnea episodes. In one preferred embodiment of the present invention, the negative pressure source 290 can be integrated with the retractable part 250 and the controller 251 can be connected with the negative pressure source 290 to control on and off of the negative pressure source 290, as shown in FIG. 5C and FIG. 5D. Please ...
Studies that have examined the cardiopulmonary receptor control of circulation in hypertension have produced conflicting results. In 10 normotensive subjects and in age-matched essential hypertensive subjects without (n = 10) or with left ventricular hypertrophy (n = 12), as well as in seven subjects of the latter group restudied after 1 year of treatment that induced regression of cardiac hypertrophy, we examined the cardiopulmonary reflex by increasing central venous pressure and stimulating cardiopulmonary receptors through passive leg raising and by reducing central venous pressure and deactivating cardiopulmonary receptors through nonhypotensive lower body negative pressure. Reflex responses were measured as changes in forearm vascular resistance (mean blood pressure divided by plethysmographically measured blood flow), plasma norepinephrine concentration, and plasma renin activity. In hypertensive subjects without left ventricular hypertrophy, stimulation and deactivation of ...
Animal experimental evidence suggests that neuropeptide Y (NPY) is coreleased with norepinephrine (NE) from sympathetic nerve endings and is involved in nonadrenergic neurogenic vascular control of skeletal muscle. We wished to determine whether these findings may be extended to humans. Forearm blood flow (venous occlusion plethysmography) and the regional overflows of NE and NPY-like immunoreactivity (NPY-LI) were studied at rest and during sympathetic nerve activation by lower body negative pressure (LBNP; -10 mm Hg, 10 min) in 10 hypertensive men before and after local alpha-adrenergic blockade by a dose of phenoxybenzamine (60 micrograms x 100 ml-1 x min-1 for 60 min), which most markedly attenuated responses to exogenous NE; propranolol (10 micrograms x 100 ml-1 x min-1) was present throughout. Phenoxybenzamine increased forearm blood flow at rest (11.5 +/- 1.0 vs. 3.9 +/- 0.3 ml x 100 ml-1 x min-1; p less than 0.001). LBNP-evoked reduction of forearm blood flow (37 +/- 2%, p less than ...
Numerous studies have suggested that epinephrine may facilitate neural release of NE. There have been no studies in humans that demonstrate the functional significance of this action. To determine whether epinephrine facilitates neurogenic vasoconstriction in humans, we contrasted forearm vasoconstrictor responses to a reflex stimulus (lower body negative pressure [LBNP]) and to intraarterial NE before, during, and 30 min after infusion of epinephrine (50 ng/min) or isoproterenol (10 or 25 ng/min) into a brachial artery. These doses had no systemic effects. We reasoned that if prejunctional stimulation of beta receptors by epinephrine and isoproterenol had functional significance, the vasoconstrictor response to LBNP would be potentiated in comparison to the response to NE (postjunctional mechanism). Studies were done on 23 normal male volunteers. Forearm blood flow was measured with a strain gauge plethysmograph and intraarterial pressure was recorded. The ratio of vasoconstrictor responses to ...
Introduction: Signal processing and machine learning (ML) paradigms may serve as an automated tool for analyzing and discovering the hidden changes in the ECG in order to predict the presence and severity of hemorrhage. In this study a method based on discrete wavelet transform (DWT) and ML is used to analyze raw ECG, extract significant ECG features, and then use them to identify severe volume loss.. Methods: The algorithm detects and extracts time-interval and amplitude features from the ECG that describe ECG changes due to volume loss. These features include PQ, PR, QT, and ST duration, amplitude of T over amplitude of R, and amplitude of P over amplitude of R from each ECG cycle. The system was tested on volunteers undergoing lower body negative pressure (LBNP) as a hemorrhage mimetic. The LBNP protocol consisted of a 5 min rest period (0 mm Hg) followed by 5 min of chamber decompression of the lower body to −15, −30, −45, and −60 mm Hg and additional increments of −10 mm Hg every ...
Fluid Shifts: The crew began the first of the Fluid Shifts experiment operations known as Dilution Measures which looks at fluid compartmentalization by assessing of total body water (via saliva and urine analysis) and extracellular and intracellular fluid volume (via blood and urine analysis). Fluid Shifts is a NASA investigation, divided into Dilution Measurements, Baseline Imaging, and Imaging with Chibis and is typically spread over several weeks. The Chibis hardware is used to perform the Lower Body Negative Pressure (LBNP) part of the experiment. The Fluid Shifts experiment investigates the causes for severe and lasting physical changes to astronauts eyes. Because the headward fluid shift is a hypothesized contributor to these changes, reversing this fluid shift with a LBNP device is being evaluated as a possible intervention. Results from this study may help to develop preventative measures against lasting changes in vision and prevention of eye damage.. ISS Experience: The crew ...
Looking for online definition of negative pressure drainage in the Medical Dictionary? negative pressure drainage explanation free. What is negative pressure drainage? Meaning of negative pressure drainage medical term. What does negative pressure drainage mean?
Severe blood pressure changes are well known in hemodialysis. Detection and prediction of these are important for the well-being of the patient and for optimizing treatment. New noninvasive methods for this purpose are required. The pulse wave transit time technique is an indirect estimation of blood pressure, and our intention is to investigate whether this technique is applicable for hemodialysis treatment. A measurement setup utilizing lower body negative pressure and isometric contraction was used to simulate dialysis-related blood pressure changes in normal test subjects. Systolic blood pressure levels were compared to different pulse wave transit times, including and excluding the cardiac preejection period. Based on the results of these investigations, a pulse wave transit time technique adapted for dialysis treatment was developed and tried out on patients. To determine systolic blood pressure in the normal group, the total pulse wave transit time was found most suitable (including the ...
The purpose for this study is to measure the physiology of human undergoing a Lower Body Negative Pressure usea non-invasive low-power optical technique, near-infrared diffuse optical spectroscopy measurement and compare these measurement to standard monitoring procedures delineated in the Brooke Army Medical Center.. The Brooke Army Medical Center can use near-infrared diffuse optical spectroscopy to provide functional physiologic tissue and organ information without ionizing radiation and without withdrawing any blood, in a cost-effective and rapid manner. Monitoring for the onset of circulatory shock in a wounded soldier on the battlefield is typically performed by measurement of arterial blood pressure, arterial oxygen saturation, or simple auscultation of the pulse. Shock is typically recognized by non-specific signs and subjective symptoms such as cold clammy skin, pallor, weak thready pulse, unstable vital signs, and diminished mentation. ...
A method and apparatus for simulating gravitational forces on a living organism wherein a series of negative pressures are externally applied to successive lengthwise sections of a lower limb of the organism, the pressures decreasing progressively with distance of said limb sections from the heart of the organism. A casing defines a chamber adapted to contain the limb of the organism and is rigidified to resist collapse upon the application of negative pressures to the interior of the chamber. Seals extend inwardly from the casing for effective engagement with the limb of the organism and, in cooperation with the limb, subdivide the chamber into a plurality of compartments each in negative pressure communicating relation with the limb. Controls apply negative pressures to the compartment and maintain the negative pressures at incrementally different levels in respective ones of the compartments.
One part (phloem, maybe analogous to arteries) is for the sugars produced by the leaves, called sap. The second is xylem, (maybe analogous to veins), conducting water and minerals up from the roots. Xylem is a dead, porous tissue inside the cambium. Using tiny, hydrophilic vessels allows water tension to "hold it all together", while the negative pressure at the top of a plant pulls continuously upwards. How much pressure is needed at the top of a plant? Well, about 19 atmospheres of negative pressure for a hundred-meter tall tree, or ~2MPa. (Compared to this, our blood pressure is negligible, at 0.015 MPa.) The xylem is carefully constructed to prevent bubbles from forming, and from spreading if they do form, helping the natural cohesion of water (which causes the phenomena of capillary action and surface tension) to keep the water column intact under such intense pressures ...
Item #: SCP-885. Object Class: Euclid. Special Containment Procedures: SCP-885 is contained within a welded steel container in Storage Area ██-██. The storage area must be kept at negative pressure at all times to reduce possibility of escape. Air movement within the storage area is to be monitored at all times.. Description: SCP-885 is a living creature of unknown composition that displaces all fluids (liquids and gases) within its perimeter. Analysis of the interior of the creature has shown no phenomena consistent with known matter: it is, for all intents and purposes, a complete vacuum.. Extensive sonar imaging has shown SCP-885s perimeter to be a cloud of about two hundred ovoid elements, which intersect and divide arbitrarily. Whether it is a single creature or a swarm is unknown; experiments to isolate one of the ovoids from the main mass are underway.. SCP-885s perimeter contains the pressure differential, and it can manipulate this difference in pressure to move itself. It can ...
We induced abrupt hypovolemia in an awake, spontaneously breathing or noninvasively ventilated subject. The combination of hypovolemia and PPV was associated with a 15% reduction in ICA‐BF, whereas MAP was stable during compensated central hypovolemia. CI and ETCO2 contributed significantly to these changes. Our results suggest that CBF is vulnerable to hypovolemia and mild hypocapnia despite circulatory reflex adaptations and absence of hypotension.. On the induction of hypovolemia, MAP decreased transiently, being restored after 20 sec despite the large persisting reduction in SV and CI. Baroreceptor unloading and SNS activation probably mediated MAP restoration and HR increase. Despite the restored MAP, the reduction in CI was a significant predictor of ICA‐BF drop in our model, analogous to previously reported results (Ogoh et al. 2005; Meng et al. 2015). In a recent review, the integrated effect of the various CBF‐regulatory mechanisms, including CO, on the cerebrovascular resistance ...
Whether you want to lose weight or just make everyday movement easier, focus on strengthening your legs, thighs, and calves. Try this 20-minute lower-body workout at home.
Causes of Presyncope with diagnosis analysis, related symptoms, patient stories, full-text book chapters, alternative diagnoses, misdiagnosis, treatments, remedies, and much more.
Multi-Purpose Small Payload Rack (MSPR) Combustion Chamber (CC) Setup: FE-3 Cassidy configured and installed the MSPR CC in preparation for the Combustion Chamber gas leak check scheduled for Thursday, May 30. Cassidy deployed and installed the chamber onto the MSPR workbench and then installed the chamber in the MSPR work volume. The leak check is comprised of three tests - Nitrogen gas (GN2) supply line leak check, CC leak check with negative pressure, and CC leak check with positive pressure. The GN2 and negative pressure leak checks are scheduled for Thursday, May 30.. 35 Soyuz (35S) Launch and Docking: Following their morning work, ISS Commander (CDR) Vinogradov, Flight Engineer (FE)-2 Misurkin, and Cassidy were scheduled for a four-hour nap in advance of the docking of 35S. FE-4 Yurchikhin, FE-5 Parmitano, and FE-6 Nyberg launched on 35S from the Baikonur Cosmodrome at 3:31 pm CDT. 35S proceeded through a nominal four-orbit rendezvous and docked to the MRM1 docking port at 9:10 pm CDT, ...
Adjustable Emergency Portable Suction Unit Surgical Medical Device Model: DFX-23B.I Technical Specifications Of Sputum Suction Device: Negative pressure: ≤-0.09Mpa(680mmHg) Air pumping efficiency: ≥20L/min Capacity of liquid vessel: 1000ml Range of negative pressure regulation: -0.013MPa~-0.09Mpa(680mmHg) Power supply: AC220V±10% 50/60Hz Input power: 150VA Pump structure: oil-free self-lubricated pump Work mode: intermittent load continuous operation TECHNICAL SPECIFICATION: […]. Read More ...
VACUETTE® Tubes are irradiated to achieve sterility. These tubes are sterile on the interior only. We cannot recommend re-sterilizing the tubes, primarily due to pressure changes that take place during the re-sterilization cycle. Our tubes are under a specific negative pressure. During the re-sterilization cycle this negative pressure may be disrupted and therefore the tubes may not draw the proper blood volume. ...
A muscle that is a flexor at one joint may also be a flexor or extensor at another. These are known as two-jointed muscles, and here are the most effective ways to train the ones in your lower body.
When skin sags, you can significantly change your lower body with a surgery that reshapes the abdomen, buttocks, and thighs by removing excess skin.
*Always consult your physician before working out while pregnant. Natalia Kern demonstrates her favorite lower body moves to stay fit for two.
1. Tadasana - This asana is also known as the mountain pose. This posture helps increase the length of your spine. Stand with your feet firmly on the ground and keep the spine straight without any bending or slouching. The leg muscles should be kept firm and the face and jaws should be totally relaxed.. 2. Bhujangasana - This asana is also known as the cobra pose. Lie down on the ground facing down. Gently press the lower body onto the ground and spread your digits below your shoulders and keep the elbows at the sides. Keeping the lower body stable on the ground, inhale and raise your upper body by lengthening the arms. Ensure that you raise the body only as far as possible while keeping the lower body very stable.. Maintain the posture till a slow count of 15 and then release the posture by lowering the upper body while exhaling at the same time. This posture adds to the length of your spine and thus adds to your overall height.. 3. Stretching - Stretching should be an integral part of your ...
Particularly body resistance and floor or tangle works out. You can likewise change the measure of weight held while playing out the activities to make them progress in the direction of the right results. Adjustments can be utilized to guarantee the picked lower body practices accomplish the outcomes that are fancied. The individuals who dont have admittance to a fitness coach can simply discover data about various lower body practices and their best uses through you tube or free online lower body online classes that are developing in ubiquity ...
Particularly body resistance and floor or tangle works out. You can likewise change the measure of weight held while playing out the activities to make them progress in the direction of the right results. Adjustments can be utilized to guarantee the picked lower body practices accomplish the outcomes that are fancied. The individuals who dont have admittance to a fitness coach can simply discover data about various lower body practices and their best uses through you tube or free online lower body online classes that are developing in ubiquity ...
Who doesnt want sculpted glutes and legs? Heres a workout from NLA for Her-sponsored athlete Amy Updike that will shape your lower half into top form.
Hypertrophy-Endurance" (i.e. lean muscle building for maximum calorie burning and definition)Ill spare you the scientific explanation as to why this is so effective BUT, trust me…after designing personal training programs for over 13 years now, this is by far one of the best I have ever made! ...
In this last installment, Ill finish up with the mech by modeling the bottom half of its body, the legs and feet. Well be using all of the techniques Ive demonstrated in the past episodes of the tutorial and apply them to the modeling of these lower appendages.
The kettlebell squat strengthens the lower body with a focus on the quads, hamstrings, and glutes. The exercise also improves posture and mobility.
|p|Fourteen healthy young men were exposed to progressive increases in lower body positive pressure (LBPP) from 0 to 40 Torr in the supine position. Central venous pressure (CVP) increased 1.09 mmHg (P | 0.05) at 5 Torr LBPP. Between 20 and 40 Torr LBPP CVP increased 0.85 mmHg, resulting in a total|/p| …
0034] Conduit 22 can comprise a single lumen conduit (e.g., switched between a vacuum source and/or a fluid source and apparatus 14), or can comprise multiple single-lumen conduits or a multi-lumen conduit such that, for example, fluid can be delivered and/or negative pressure can be applied to wound dressing 18 individually and/or simultaneously. Additionally, conduit 22 can comprise, for example, a first lumen for the application of negative pressure and/or fluid delivery, and at least one additional lumen for coupling to pressure sensor(s) to sense pressure or negative pressure between drape 38 and surface 42. In some embodiments, conduit 22 can comprise multiple lumens (e.g., as in a single conduit with a central lumen for application of negative pressure and/or fluid delivery, and one or more peripheral lumens disposed adjacent or around the central lumen such that the peripheral lumens can be coupled to a pressure sensor to sense a pressure or negative pressure between drape 38 and surface ...
A hearing board for the South Coast Air Quality Management District denied a request on Tuesday to allow the battery recycling company Exide Technologies more time to install pollution control devices at its facility in Vernon.. RELATED: Exide Technologies FAQ: Everything you need to know about recycling lead batteries in LA In January, AQMD adopted a regulation that would require Exide to achieve negative pressure at its facilities by April 10. Negative pressure would suck in and filter all emissions from two of the companys furnaces, with the intention of limiting emissions of arsenic and other toxins.. The company said that it intends to comply with the regulations but that the timeframe is too stringent. It both filed a lawsuit against AQMD and requested relief from the agency with regards to the regulation. A Los Angeles Superior Court judge ruled against Exide on Monday, and an AQMD hearing board denied its request on Tuesday. In a written statement, Exide officials said they are ...