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Alterations in Respiration II01:30

Alterations in Respiration II

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There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
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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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Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

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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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Special considerations while measuring oxygen saturation01:19

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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.
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Physical Assessment of the Respiratory Tract II: Inspection01:27

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Physical assessment of the respiratory tract through inspection is a crucial step in understanding the patient's respiratory health. It provides insights into the functioning of the respiratory system, the musculoskeletal structure, and even the patient's nutritional status. This comprehensive approach involves observing several vital aspects: chest configuration, breathing patterns, respiratory rates, skin color, and use of accessory muscles.
Chest Configuration
The chest configuration...
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Temperature Measurement Sites01:14

Temperature Measurement Sites

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A thermometer measures body temperature. The common sites for measuring body temperature are the oral cavity, axillary region, temporal artery, and skin surface, such as the forehead, abdomen, and axilla. True core body temperature is assessed in the rectum, tympanic membrane, pulmonary artery, esophagus, and urinary bladder.
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Day-to-Day Variability in Measurements of Respiration Using Bioimpedance from a Non-Standard Location.

Krittika Goyal1, Dishant Shah1, Steven W Day2

  • 1Department of Manufacturing and Mechanical Engineering Technology, Rochester Institute of Technology, Rochester, NY 14623, USA.

Sensors (Basel, Switzerland)
|July 27, 2024
PubMed
Summary

Thigh-to-thigh bioimpedance offers a promising non-invasive method for monitoring pulmonary health, showing high correlation with lung tidal volume. This technique demonstrates lower day-to-day variability compared to traditional thorax measurements, suggesting potential for long-term home use.

Keywords:
bioimpedance-based sensingdry electrodeshome care follow-uprespiration monitoringwearable sensors

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Area of Science:

  • Biomedical Engineering
  • Respiratory Physiology
  • Medical Monitoring

Background:

  • Non-invasive pulmonary health monitoring is crucial for conditions like COVID-19 recovery and pulmonary edema.
  • Existing impedance-based methods for thorax monitoring face challenges in daily accuracy and practicality.
  • Prior work introduced thigh-thigh bioimpedance as a novel approach for respiration monitoring.

Purpose of the Study:

  • To investigate the variability of thigh-thigh impedance measurements for long-term, in-home respiratory monitoring.
  • To assess the feasibility of detecting respiratory status changes using this technique.
  • To compare the day-to-day variability of thigh-thigh impedance with thorax impedance.

Main Methods:

  • Collected within-session and day-to-day impedance measurements at 80 kHz using dry electrodes on the thigh and wet electrodes on the thorax.
  • Utilized simultaneous gold-standard spirometer measurements from five healthy subjects over three consecutive days.
  • Analyzed the correlation between peak-peak bioimpedance and peak-peak spirometer tidal volume.

Main Results:

  • Peak-peak bioimpedance measurements showed high correlation with spirometer tidal volume (0.94 ± 0.03 for thigh; 0.92 ± 0.07 for thorax).
  • Day-to-day variability in the impedance-volume relationship was significantly lower for thigh-thigh measurements (14%) compared to thorax measurements (40%).
  • Thigh-thigh measurements were influenced by food and water intake, potentially affecting tidal volume accuracy.

Conclusions:

  • Thigh-thigh bioimpedance is a feasible and promising non-invasive method for monitoring respiration and lung tidal volume.
  • The lower day-to-day variability of thigh-thigh measurements suggests greater potential for long-term, in-home respiratory monitoring.
  • Further research is needed to mitigate the impact of physiological factors like food and water intake on measurement accuracy.