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Related Concept Videos

Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

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Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
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Solution Equilibrium and Saturation01:59

Solution Equilibrium and Saturation

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Imagine adding a small amount of sugar to a glass of water, stirring until all the sugar has dissolved, and then adding a bit more. You can repeat this process until the sugar concentration of the solution reaches its natural limit, a limit determined primarily by the relative strengths of the solute-solute, solute-solvent, and solvent-solvent attractive forces. You can be certain that you have reached this limit because, no matter how long you stir the solution, undissolved sugar remains. The...
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Calculating the Equilibrium Constant02:46

Calculating the Equilibrium Constant

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The equilibrium constant for a reaction is calculated from the equilibrium concentrations (or pressures) of its reactants and products. If these concentrations are known, the calculation simply involves their substitution into the Kc expression.
For example, gaseous nitrogen dioxide forms dinitrogen tetroxide according to this equation:
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Calculating Equilibrium Concentrations02:05

Calculating Equilibrium Concentrations

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Being able to calculate equilibrium concentrations is essential to many areas of science and technology—for example, in the formulation and dosing of pharmaceutical products. After a drug is ingested or injected, it is typically involved in several chemical equilibria that affect its ultimate concentration in the body system of interest. Knowledge of the quantitative aspects of these equilibria is required to compute a dosage amount that will solicit the desired therapeutic effect.
A more...
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Pulse01:16

Pulse

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When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
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Pulse01:05

Pulse

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The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
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Related Experiment Video

Updated: Feb 11, 2026

Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
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Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence

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[A new method for calculating pulse oxygen saturation].

Genxuan Zhang, Bo Shi, Yang Cao

    Sheng Wu Yi Xue Gong Cheng Xue Za Zhi = Journal of Biomedical Engineering = Shengwu Yixue Gongchengxue Zazhi
    |May 3, 2018
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a new method for real-time blood oxygen saturation monitoring using linear regression on red and infrared light signals. This approach ensures accurate measurements and fast updates for pulse oximetry.

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    Area of Science:

    • Biomedical Engineering
    • Medical Devices
    • Physiological Monitoring

    Background:

    • Traditional pulse oximetry methods struggle with real-time data updates.
    • Accurate blood oxygen saturation (SpO2) monitoring is crucial for patient care.

    Purpose of the Study:

    • To develop an effective method for real-time blood oxygen saturation calculation.
    • To address limitations in current pulse wave analysis techniques.

    Main Methods:

    • Utilized the NJL5501R hardware platform for pulse wave signal acquisition.
    • Established a linear regression model correlating red and infrared light signals.
    • Analyzed the impact of sampling numbers on pulse wave characteristic parameters.

    Main Results:

    • The proposed method achieves high linear correlation between red and infrared light signals.
    • Experimental results demonstrate accurate and fast updates of blood oxygen saturation data.
    • The approach is effective for real-time monitoring of pulse blood oxygen saturation.

    Conclusions:

    • This paper presents an effective method for real-time blood oxygen saturation monitoring.
    • The linear regression model ensures measurement accuracy and rapid data updates.
    • The findings offer a valuable tool for continuous physiological monitoring.