Results 371 to 380 of about 13,607,425 (411)
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Effect of Airway Pressure on Pericardial Pressure
American Review of Respiratory Disease, 1989The effect of applied positive airway pressure or PEEP on pericardial pressure was examined in closed-chest, anesthetized dogs with normal lungs and in animals with oleic acid-induced lung injury. Both groups were studied before and after vascular volume loading by dextran infusion.
Manuel R. Cabrera +3 more
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Journal of Tissue Viability, 1976
The primary cause of pressure sores is the interference with the blood supply of the tissues which, if prolonged, will result in their death. In most cases, the prolonged pressure which occludes vessels is caused by the inability of the patient to feel pain and/or move.
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The primary cause of pressure sores is the interference with the blood supply of the tissues which, if prolonged, will result in their death. In most cases, the prolonged pressure which occludes vessels is caused by the inability of the patient to feel pain and/or move.
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Blood Pressure, Perfusion Pressure, and Glaucoma
American Journal of Ophthalmology, 2010To provide a critical review of the relationships between blood pressure, ocular blood flow, and glaucoma and the potential for glaucoma treatment through modulation of ocular perfusion.Summaries of the pertinent literature and input from glaucoma researchers and specialists with relevant experience.Review and interpretation of selected literature and ...
Joseph Caprioli, Anne L. Coleman
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Pressure to measure pressure: the McLean Tonometer [PDF]
British Journal of Ophthalmology, 2009 Albrecht von Graefe’s invention of the surgical iridectomy procedure for the treatment of glaucoma in 1857 was his impetus to design an instrument to measure the eye pressure so that he could record pressures before and after iridectomy. He also constructed a campimeter for plotting the visual field.
Richard Keeler +2 more
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The relationship of intraocular pressure to intracranial pressure
Annals of Emergency Medicine, 2004The early detection of intracranial hypertension can lead to timely medical and neurosurgical intervention, preventing brain herniation and death. In this investigation, we hypothesize that an increase in intracranial pressure can be detected by an increase in intraocular pressure using noninvasive existing technology, the handheld tonometer.This was a
Brian Hiestand +4 more
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Pressure Ulcers and Pressure Relief Surfaces
Clinics in Plastic Surgery, 1998Pressure ulcer incidence has been reduced but not eliminated. A few patients still develop pressure ulcers despite using air-fluidized beds and other specialty beds. In the future, very high-risk patients may possibly be sent to space clinics to recuperate in zero gravity for extended periods.
Lucas Rugani +3 more
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ACS Applied Materials and Interfaces, 2019
An ultrahigh sensitive capacitive pressure sensor based on a porous pyramid dielectric layer (PPDL) is reported. Compared to that of the conventional pyramid dielectric layer, the sensitivity was drastically increased to 44.5 kPa-1 in the pressure range
Jun Chang Yang +7 more
semanticscholar +1 more source
An ultrahigh sensitive capacitive pressure sensor based on a porous pyramid dielectric layer (PPDL) is reported. Compared to that of the conventional pyramid dielectric layer, the sensitivity was drastically increased to 44.5 kPa-1 in the pressure range
Jun Chang Yang +7 more
semanticscholar +1 more source
1972
Pressure may be defined as force acting against a given area. Basically there exist two types of units for measuring pressure. Pressure may be expressed as weight per unit area or as the height of a liquid column. The first alternative clearly adheres to the definition according to which a weight (force) acts against a certain area.
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Pressure may be defined as force acting against a given area. Basically there exist two types of units for measuring pressure. Pressure may be expressed as weight per unit area or as the height of a liquid column. The first alternative clearly adheres to the definition according to which a weight (force) acts against a certain area.
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Advances in Small Animal Medicine and Surgery, 2015
Glaucoma is not a single disease entity, but a group of ocular diseases which are characterized by progressive death of retinal ganglion cells (the axons of which coalesce to become the optic nerve) and have the common, constant risk factor of elevated intraocular pressure (IOP).
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Glaucoma is not a single disease entity, but a group of ocular diseases which are characterized by progressive death of retinal ganglion cells (the axons of which coalesce to become the optic nerve) and have the common, constant risk factor of elevated intraocular pressure (IOP).
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Graphene-Paper Pressure Sensor for Detecting Human Motions.
ACS Nano, 2017Pressure sensors should have an excellent sensitivity in the range of 0-20 kPa when applied in wearable applications. Traditional pressure sensors cannot achieve both a high sensitivity and a large working range simultaneously, which results in their ...
L. Tao +7 more
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