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Related Concept Videos

Pulmonary Function Tests01:25

Pulmonary Function Tests

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Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
PFTs involve using a spirometer, a...
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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 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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Physical Assessment of the Respiratory Tract III: Percussion01:29

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The respiratory system, fundamental to life, consists of complex structures responsible for gas exchange. The percussion assessment is critical to understanding this system's health and functionality. This non-invasive assessment technique allows healthcare providers to evaluate the density or aeration of the lungs, thereby identifying potential abnormalities.
Percussion in Respiratory Assessment
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Physical Assessment of the Respiratory Tract II: Inspection01:27

Physical Assessment of the Respiratory Tract II: Inspection

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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.
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The chest configuration...
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Conducting Respiratory Oscillometry in an Outpatient Setting
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Impulse oscillometry for evaluating pulmonary function in pediatric pectus deformities: a prospective controlled

Ece Ocak1, Ece Halis2, Gökçen Kartal Öztürk2

  • 1Department of Pediatric Pulmonology, Faculty of Medicine, Ege University, Izmir, Turkey. ecesakizli@gmail.com.

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Impulse oscillometry (IOS) detects subtle respiratory issues in children with pectus deformities (PDs) missed by spirometry. This suggests IOS is valuable for early diagnosis and management of PD-related pulmonary function changes.

Keywords:
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Area of Science:

  • Pediatric Pulmonology
  • Respiratory Physiology

Background:

  • Pectus deformities (PDs) can impact pulmonary mechanics, but spirometry often fails to identify subtle abnormalities.
  • Impulse oscillometry (IOS) is a sensitive, effort-independent method for assessing respiratory mechanics.

Purpose of the Study:

  • To evaluate pulmonary function in children with PDs using both spirometry and IOS.
  • To identify potential markers for respiratory impairment in this population.

Main Methods:

  • Prospective cross-sectional study involving 73 children with PDs and 80 healthy controls.
  • Spirometry and IOS testing were performed, with z-scores calculated for all parameters.
  • A possible restrictive ventilatory defect was defined using z-scores for forced vital capacity (zFVC) and forced expiratory volume in 1 second (zFEV1).

Main Results:

  • Children with PDs showed significantly lower zFVC and zFEV1, and higher reactance at 5 cmH2O (zAX) and reactance at 15 Hz (zX15) compared to controls.
  • No obstructive pattern was observed, but 61.6% of children with PDs had a possible restrictive ventilatory defect.
  • Lower body mass index (zBMI) and higher zAX independently predicted restriction.

Conclusions:

  • IOS offers added value in detecting respiratory impairment in children with PDs.
  • The combination of IOS and spirometry can facilitate earlier identification of functional limitations.
  • zAX may serve as a useful marker for clinical decision-making and follow-up in children with PDs.