In Vivo Pressure
In Vivo Pressure - Related Videos
07:03
Intrauterine Telemetry to Measure Mouse Contractile Pressure In Vivo
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Cited by 16 •
2015
This manuscript provides a protocol for implanting telemeters in the mouse for the purpose of measuring intrauterine pressures during pregnancy.
07:26
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
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Cited by 5 •
2013
The laser heated diamond anvil cell combined with synchrotron micro-diffraction techniques allows researchers to explore the nature and properties of new phases of matter at extreme pressure and temperature (PT) conditions. Heterogeneous samples can be characterized in situ under high pressure by 2D mapping and combined powder, single-crystal and multigrain diffraction approaches.
07:12
Design of a Cyclic Pressure Bioreactor for the Ex Vivo Study of Aortic Heart Valves
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Cited by 7 •
2011
A cyclic pressure bioreactor capable of subjecting heart valve tissue to physiological and pathological pressure conditions has been designed. A LabVIEW program allows users to control pressure magnitude, amplitude and frequency. This device can be used to study the mechanobiology of heart valve tissue or isolated cells.
02:34
Vapor Pressure
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2020
When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase molecules move randomly about, they will occasionally collide with the surface of the condensed phase, and in some cases, these collisions will result in the molecules re-entering the condensed phase. The change from the gas phase to the liquid is called condensation. When the rate of condensation becomes equal to the rate of vaporization, neither the amount of the liquid nor the amount of the vapor...
09:16
Simultaneous ex vivo Functional Testing of Two Retinas by in vivo Electroretinogram System
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Cited by 36 •
2015
Ex vivo ERG can be used to record electrical activity of retinal cells directly from isolated intact retinas of animals or humans. We demonstrate here how common in vivo ERG systems can be adapted for ex vivo ERG recordings in order to dissect the electrical activity of retinal cells.
FAQs
A pressure-sensitive transducer detects mechanical force and converts it into an electrical signal that can be recorded or monitored. When connected to a catheter or probe, it provides a way to translate pressure changes inside the body into measurable data. This conversion allows clinicians and researchers to evaluate internal mechanical conditions rather than relying only on indirect signs.
Pressure gradients show how pressure differs between locations within the body. These differences can provide information about fluid movement and the resistance encountered as fluids travel through tissues or organs. They also help researchers assess tissue compliance, meaning how readily a tissue responds to pressure, making gradients useful for interpreting changes in organ and system mechanics.
The measurement site determines which physiological compartment or organ is being evaluated and therefore which aspect of function the data can describe. Arterial, intracranial, intraocular, and bladder measurements address different internal conditions. Selecting the relevant site connects the recorded pressure to cardiovascular, neurological, ocular, or urinary physiology rather than treating all pressure values as interchangeable.
The general workflow pairs a pressure-sensitive transducer with an appropriate catheter or probe, places that sensing component where the pressure of interest can be assessed, and records the resulting electrical signal. The recorded signal is then interpreted in relation to pressure gradients, fluid movement, resistance, or tissue compliance. This approach supports both clinical monitoring and experimental measurement.
These measurements are used when pressure in a specific physiological compartment can inform diagnosis or treatment decisions. Arterial pressure supports cardiovascular assessment, intracranial pressure relates to neurological evaluation, intraocular pressure addresses ocular conditions, and bladder pressure contributes to urinary-system assessment. The selected measurement reflects the organ or system whose function requires closer evaluation.
Pressure data can reveal disease-related changes in internal mechanics and help guide interventions when clinicians need information about organ or system function. In research, measurements support experimental studies of cardiovascular, neurological, and renal function. Comparing pressure patterns or gradients with physiological conditions can improve understanding of how altered resistance, fluid movement, or tissue compliance affects the body.