Negative Pressure Drainage
Negative Pressure Drainage - Related Videos
11:26
Assessing Cerebral Autoregulation via Oscillatory Lower Body Negative Pressure and Projection Pursuit Regression
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Cited by 7 •
2014
Cerebral perfusion is maintained across a range of pressures via cerebral autoregulation. However, characterizing autoregulation requires prominent pressure fluctuations at regulated frequencies. The described protocol will show how oscillatory lower body negative pressure can generate pressure fluctuations to provide data for projection pursuit regression for quantification of the autoregulatory curve.
14:09
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
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Cited by 31 •
2013
We describe a "gold standard" for evaluating orthostatic tolerance (OT) using tilt testing with combined lower body negative pressure (LBNP). This can be combined with non-invasive evaluations of cardiovascular reflex control. Normal and abnormal responses are defined.
06:17
Manual Drainage of the Zebrafish Embryonic Brain Ventricles
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Cited by 9 •
2012
We present a method to collect cerebrospinal fluid (CSF) and to create a system which lacks CSF within the embryonic zebrafish brain ventricular system. This allows for further examination of CSF composition and its requirement during embryonic brain development.
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.
01:19
Acid Mine Drainage
0 Views •
2026
Mining activities that disturb sulfide-rich rocks, particularly those containing pyrite (FeS₂), initiate a cascade of geochemical and microbiological processes with serious environmental implications. When exposed to air and water, pyrite undergoes oxidation, releasing sulfate, ultimately forming sulfuric acid and mobilizing heavy metals into surrounding water systems. This phenomenon, known as acid mine drainage (AMD), results in low pH waters laden with toxic elements that threaten aquatic...
FAQs
Flow depends on maintaining a pressure difference between the treated space and the collection side. The sealed system links a catheter or porous dressing to a chamber, while regulated suction keeps the receiving side at lower pressure. This arrangement provides a controlled route for fluid, blood, or air to leave the wound or cavity instead of accumulating within it.
Regulated suction balances effective removal with the need to limit tissue trauma. Excessive or poorly controlled suction could undermine the purpose of a carefully managed drainage system, whereas appropriate regulation supports continued flow while helping reduce edema. This balance is especially relevant when drainage is applied to wounds or body cavities during recovery.
Its effects extend beyond clearing accumulated material. By reducing edema, the technique can create conditions that support recovery, while the applied drainage arrangement can promote wound approximation, meaning closer positioning of wound surfaces. These effects make the method relevant not only to immediate fluid control but also to the broader process of wound healing.
A basic setup requires a catheter or porous dressing at the wound or cavity, a sealed connection, a source of controlled suction, and a collection chamber. Together, these components establish the drainage pathway and preserve the pressure difference needed for outward movement. The chamber also provides a location for monitoring the material removed.
Clinical use includes drainage after surgery and management of complex or infected wounds. The approach also applies to selected conditions involving body cavities, including pneumothorax and fluid collections. The relevant choice depends on the need to remove accumulated fluid, blood, or air while maintaining a controlled, sealed pathway that supports ongoing recovery.
The collection chamber enables monitoring of material removed from the wound or body cavity. That observation can contribute to ongoing patient management alongside the method's physical effects, such as reduced edema and wound approximation. In this way, drainage serves both a therapeutic role and a monitoring function during postoperative or complex wound care.