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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...
Mechanical Ventilation III: Noninvasive Ventilation01:23

Mechanical Ventilation III: Noninvasive Ventilation

Noninvasive positive-pressure ventilation (NIPPV), continuous positive airway pressure (CPAP), and bilevel positive airway pressure (BiPAP) are essential methods in respiratory care. These ventilation techniques offer unique benefits for patients with various respiratory conditions, providing adequate support without requiring intubation. Let's explore how each method is crucial in improving patient outcomes and enhancing respiratory therapy.
Noninvasive Positive-Pressure Ventilation (NIPPV)
Chronic Obstructive Pulmonary Disease-I: Introduction01:20

Chronic Obstructive Pulmonary Disease-I: Introduction

Chronic Obstructive Pulmonary Disease (COPD) is a long-lasting respiratory condition requiring continuous attention and care. It is a progressive lung disease that leads to breathing challenges due to airflow obstruction. It manifests as persistent respiratory symptoms and restricted airflow resulting from abnormalities in the airways and alveoli, usually due to long-term exposure to harmful particles or gases. COPD mainly consists of two primary conditions: emphysema and chronic bronchitis.
Mechanical Ventilation II: Invasive Ventilation01:23

Mechanical Ventilation II: Invasive Ventilation

Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
Mechanism of Breathing I: Inspiration01:30

Mechanism of Breathing I: Inspiration

Introduction to Inspiration: The Respiratory System in Action
The respiratory system, an essential network for breathing, comprises the conducting and respiratory zones, each playing a crucial role in the overall process of respiration. Let us explore the detailed mechanism of inspiration, or inhalation, which is the first phase of the respiratory cycle.
Pathway of Air during Inspiration
During inspiration, air enters our body through the nose or mouth and moves through the conducting zone,...

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Related Experiment Video

Updated: Jun 20, 2026

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
08:34

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns

Published on: September 16, 2019

Comparison between deep breathing exercises and incentive spirometry after CABG surgery.

Julia Alencar Renault1, Ricardo Costa-Val, Márcia Braz Rosseti

  • 1Santa Casa de Misericórdia of BeloHorizonte - Belo Horizonte, MG, Brazil. jurenault@ig.com.br

Revista Brasileira De Cirurgia Cardiovascular : Orgao Oficial Da Sociedade Brasileira De Cirurgia Cardiovascular
|September 22, 2009
PubMed
Summary

Deep breathing exercises (DBE) and incentive spirometry (IS) showed no significant differences in respiratory function or oxygen saturation for patients after coronary artery bypass grafting (CABG). Both methods equally supported recovery in CABG patients.

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Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise
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Related Experiment Videos

Last Updated: Jun 20, 2026

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns
08:34

Investigation into Deep Breathing through Measurement of Ventilatory Parameters and Observation of Breathing Patterns

Published on: September 16, 2019

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
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Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease

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Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise
07:09

Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise

Published on: February 20, 2017

Area of Science:

  • Cardiovascular Surgery
  • Respiratory Physiology
  • Pulmonary Rehabilitation

Background:

  • Coronary artery bypass grafting (CABG) surgery can impact respiratory function.
  • Postoperative pulmonary complications are a concern in CABG patients.
  • Effective respiratory interventions are crucial for recovery after CABG.

Purpose of the Study:

  • To compare the efficacy of deep breathing exercises (DBE) and flow-oriented incentive spirometry (IS).
  • To evaluate effects on forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), maximal respiratory pressures, and oxygen saturation.
  • To assess these outcomes in patients following coronary artery bypass grafting (CABG).

Main Methods:

  • Thirty-six patients undergoing CABG were randomly assigned to either DBE or IS groups.
  • Non-invasive ventilation was administered for 30 minutes within 24 hours post-extubation.
  • Respiratory variables were measured preoperatively and on the 7th postoperative day (POD); muscle strength and oxygen saturation were assessed on POD 1, 2, and 7.

Main Results:

  • No significant differences were observed between DBE and IS groups in spirometric variables (FVC, FEV1) or maximal respiratory pressures.
  • A decline in FVC and FEV1 was noted from pre-operation to POD 7 in both groups, without inter-group differences.
  • Oxygen saturation fully recovered by POD 7 in both groups, with no significant differences between the intervention groups.

Conclusions:

  • Deep breathing exercises and incentive spirometry yield comparable outcomes in patients post-CABG.
  • Neither DBE nor IS demonstrated superior efficacy in improving spirometric variables, respiratory pressures, or oxygen saturation.
  • Both interventions appear equally beneficial for respiratory recovery following coronary artery bypass grafting.