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Related Concept Videos

Assessment of Ventilation II: Respiratory Depth and Rhythm01:29

Assessment of Ventilation II: Respiratory Depth and Rhythm

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.
To assess respiratory depth, observe the degree of chest excursion or movement:
Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

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 can...
Physical Assessment of the Respiratory Tract II: Palpation01:24

Physical Assessment of the Respiratory Tract II: Palpation

Physical assessment of the respiratory tract is critical in identifying potential health issues. One key component of this assessment is palpation, a technique healthcare providers use to assess the body for abnormalities. This content explores the method of palpation in evaluating the respiratory tract, focusing on thoracic palpation and tactile fremitus.
Thoracic Palpation
Thoracic palpation detects tenderness, masses, lesions, respiratory excursions, and vocal fremitus. The nurse assesses...
Assessment of Diffusion and Perfusion01:17

Assessment of Diffusion and Perfusion

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.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
Physical Assessment of the Respiratory Tract IV: Auscultation01:28

Physical Assessment of the Respiratory Tract IV: Auscultation

Auscultation is a crucial component of the physical assessment of the respiratory tract. It offers valuable insights into airflow through the bronchial tree and potential lung obstructions. This process involves careful listening to breath, voice, and adventitious sounds, which can reveal a wealth of information about a patient's respiratory health.
Breath Sounds
Breath sounds are categorized into vesicular, bronchovesicular, and bronchial.
Respiratory Volumes01:15

Respiratory Volumes

Respiratory volumes are crucial metrics, meticulously measured to quantify the air exchanged in and out of the lungs during various phases of the breathing cycle. These precise measurements are vital for assessing lung function, diagnosing respiratory conditions, and monitoring overall respiratory health. Each parameter provides specific insights into the mechanics of breathing and the functional capacity of the lungs.
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...

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Employing the Forced Oscillation Technique for the Assessment of Respiratory Mechanics in Adults
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Physiological techniques for detecting expiratory flow limitation during tidal breathing.

N G Koulouris1, G Hardavella

  • 1Respiratory Function Laboratory, 1st Dept of Respiratory Medicine, National and Kapodistrian University of Athens Medical School, Sotiria Hospital, 152 Mesogeion Ave., Athens, Greece. koulnik@med.uoa.gr

European Respiratory Review : an Official Journal of the European Respiratory Society
|September 2, 2011
PubMed
Summary

Expiratory flow limitation at rest (EFLT) is common in severe COPD and other diseases, causing breathing difficulties. Negative expiratory pressure is a validated, simple, and accurate method for assessing EFLT.

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Area of Science:

  • Pulmonary Physiology
  • Respiratory Medicine

Background:

  • Expiratory flow limitation at rest (EFLT) is indicated by patients using the same flow-volume curve during quiet breathing and forced expiration.
  • EFLT, where increased transpulmonary pressure doesn't increase expiratory flow, causes small airway injury and dynamic pulmonary hyperinflation.
  • Symptoms like dyspnea and exercise limitation are common in COPD patients with EFLT, but it also occurs in asthma, ARDS, heart failure, and obesity.

Purpose of the Study:

  • To review current physiological techniques for assessing EFLT.
  • To highlight the effectiveness of the negative expiratory pressure method.

Main Methods:

  • Review of existing physiological techniques for assessing EFLT.
  • Validation of the negative expiratory pressure technique across various settings and disorders.

Main Results:

  • EFLT is prevalent in severe COPD (GOLD stages III-IV) and other conditions.
  • The negative expiratory pressure technique has demonstrated broad validation.

Conclusions:

  • Negative expiratory pressure is a simple, noninvasive, practical, and accurate method for assessing EFLT.
  • This technique is suitable for a wide range of clinical settings and patient populations.