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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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Assessment of Ventilation I: Respiratory Rate01:20

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Assessment of Ventilation
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
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Pulse rhythm01:30

Pulse rhythm

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
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Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

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Respiratory Depth
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
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Pulse Oximetry01:24

Pulse Oximetry

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Pulse oximetry, or SpO2, is a non-invasive method for continuously monitoring arterial oxygen saturation (SaO2). This procedure involves attaching a probe or sensor to the patient's fingertip, forehead, earlobe, or nose bridge. The sensor works by detecting changes in oxygen saturation levels through light signals generated by the oximeter and reflected by the pulsing blood under the probe.
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
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Assessment of Diffusion and Perfusion01:17

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Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
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Related Experiment Video

Updated: Jun 9, 2025

A Detailed Protocol for Perspiration Monitoring Using a Novel, Small, Wireless Device
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A Novel Wearable Sensor for Measuring Respiration Continuously and in Real Time.

Amjad Ali1, Yang Wei1, Yomna Elsaboni1

  • 1Smart Wearable Research Group, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK.

Sensors (Basel, Switzerland)
|October 26, 2024
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Summary

A new flexible, textile-based capacitive respiratory sensor was developed. This non-contact sensor accurately measures respiration, achieving 98.68% accuracy in volunteer tests.

Keywords:
electronic textilesrespiratory sensorswearable sensors

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Area of Science:

  • Textile-based sensors
  • Wearable technology
  • Biomedical engineering

Background:

  • Respiratory monitoring is crucial for diagnosing and managing various medical conditions.
  • Existing respiratory sensors often require direct skin contact, which can be uncomfortable and lead to artifacts.
  • Development of non-contact, comfortable, and accurate respiratory sensors is needed.

Purpose of the Study:

  • To design, optimize, and evaluate a flexible, textile-based capacitive respiratory sensor.
  • To investigate the sensor's performance using computational modeling and empirical measurements.
  • To assess the sensor's accuracy and reliability for non-contact respiratory monitoring.

Main Methods:

  • Computational modeling was used to examine sensor geometry and predict performance.
  • Four sensor designs were manufactured using screen printing on polyester/cotton fabric.
  • Sensors were characterized using phantoms, artifact analysis, and volunteer testing.

Main Results:

  • The sensor with a 1:3:1 electrode ratio demonstrated the highest sensitivity (6.2% frequency change).
  • Replicability was confirmed through multiple batches yielding consistent results.
  • Volunteer testing showed 98.68% accuracy in measuring respiration compared to manual breath counting.

Conclusions:

  • A flexible, textile-based capacitive respiratory sensor was successfully developed.
  • The non-contact sensor design is sensitive, reliable, and accurate for respiratory monitoring.
  • This technology offers a comfortable and effective alternative to traditional respiratory sensors.