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Related Concept Videos

Measurement of Fluid Pressure01:16

Measurement of Fluid Pressure

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Fluid pressure is commonly measured using devices called manometers, which rely on liquid columns to indicate pressure differences. The height of a liquid column in a manometer reflects the pressure exerted by the fluid, providing a simple yet effective means of measurement. Different types of manometers serve specific purposes based on their configurations and the type of fluids involved.
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Equipments Used To Measure Blood Pressure01:30

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This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
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Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
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Definition and Measurement of Pressure: Atmospheric Pressure, Barometer, and Manometer02:57

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Gas pressure is caused by force exerted by gas molecules colliding with the surfaces of objects. Although the force of each collision is very small, any surface of an appreciable area experiences a large number of collisions in a short time, which can result in high pressure.
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Measurement of Blood Pressure01:17

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Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a...
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Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
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Epidural Intracranial Pressure Measurement in Rats Using a Fiber-optic Pressure Transducer
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Comparison Of Digital Manometer And Water Column Manometer Pressures Measurements During Lumbar Puncture.

Nitin K Sekhri1,2, Shalvi Parikh1, Garret M Weber1,2

  • 1Department of Anesthesiology, Westchester Medical Center, Valhalla, New York, USA.

Medical Devices (Auckland, N.Z.)
|November 23, 2019
PubMed
Summary
This summary is machine-generated.

Digital manometers offer faster cerebrospinal fluid (CSF) pressure readings during lumbar puncture (LP) compared to traditional water columns. However, a potential clinical difference in readings necessitates careful consideration by clinicians.

Keywords:
IIHclosing pressuredigital manometeridiopathic intracranial hypertensionlumbar puncturenormal pressure hydrocephalusopening pressure

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Area of Science:

  • Neurology
  • Medical Devices
  • Clinical Measurement

Background:

  • Cerebrospinal fluid (CSF) pressure measurement is a standard procedure.
  • Conventional water column manometers are typically used.
  • Digital manometers are emerging as an alternative for CSF pressure measurement.

Purpose of the Study:

  • To compare the accuracy and speed of digital manometers versus water column manometers for CSF pressure measurement.
  • To evaluate the time required to obtain pressure readings using both devices.

Main Methods:

  • A prospective study involving 27 patients undergoing fluoroscopically guided lumbar puncture.
  • Opening and closing pressures were measured sequentially with both digital and water column manometers.
  • The time taken for each pressure measurement was recorded and compared.

Main Results:

  • Digital manometers significantly reduced the time for pressure readings (8.1s vs 42.2s for opening pressure; 8.92s vs 45.15s for closing pressure).
  • Strong correlations were observed between digital and water column measurements (r=0.98 for opening, r=0.89 for closing pressure).
  • Digital manometer readings were consistently higher than water column readings.

Conclusions:

  • Digital manometry during lumbar puncture is faster than traditional methods.
  • A potential clinical difference exists between digital and water column manometer readings.
  • Clinicians should exercise caution when interpreting digital manometer results.