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Related Concept Videos

Respiratory Volumes and Capacities01:22

Respiratory Volumes and Capacities

The respiratory system is responsible for the intake of oxygen and the expulsion of carbon dioxide from the body. Respiratory volumes describe the volume of air in the lungs at different phases of the respiratory cycle. Tidal volume is the air breathed in and out during normal, quiet breathing. Inspiratory reserve volume is the air that can be forcefully inspired beyond the tidal volume. In contrast, expiratory reserve volume refers to the air that can be expelled from the lungs after a normal...
Tracheostomy Suctioning I: Pre-Procedural Steps01:26

Tracheostomy Suctioning I: Pre-Procedural Steps

Tracheostomy suctioning is a critical procedure healthcare professionals perform to maintain a patent airway in patients with a tracheostomy tube. This procedure is necessary when secretions accumulate in the airway, causing respiratory distress. Here is a step-wise procedural guide for performing tracheostomy suctioning using an open system.
Equipment Required
First, gather all necessary equipment: a sterile suction catheter, a sterile disposable container, sterile gloves, a towel or...
Tracheostomy Suctioning II: Procedure01:23

Tracheostomy Suctioning II: Procedure

Tracheostomy suctioning is a vital nursing procedure that involves removing secretions from the tracheostomy tube to maintain airway patency and prevent respiratory complications. Nurses need to understand the proper technique for tracheostomy suctioning to ensure patient safety and comfort. In this guide, we will outline the step-by-step process for performing tracheostomy suctioning, including preparing the sterile field, donning personal protective equipment (PPE), lubricating and connecting...
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...
Suctioning the Nasopharyngeal Airway01:29

Suctioning the Nasopharyngeal Airway

Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia.
Equipment Required
Respiratory Capacities01:24

Respiratory Capacities

Respiratory capacities are crucial indicators of lung function, representing the maximum amount of air an individual's respiratory system can handle during various breathing phases.
One key metric is the Inspiratory Capacity (IC), which represents the maximum amount of air that can be inhaled with full effort. IC is calculated by summing the tidal volume and inspiratory reserve volume, typically ranging from 2.4 to 3.6 liters.
The Functional Residual Capacity (FRC) represents the air in the...

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Related Experiment Video

Updated: Jul 2, 2026

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics
12:09

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Published on: April 19, 2024

Functional residual capacity changes after different endotracheal suctioning methods.

Hermann Heinze1, Beate Sedemund-Adib, Matthias Heringlake

  • 1Department of Anesthesiology, University of Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany. Hermann.heinze@uk-sh.de

Anesthesia and Analgesia
|August 21, 2008
PubMed
Summary
This summary is machine-generated.

Endotracheal suctioning reduces functional residual capacity (FRC) in cardiac surgery patients. Monitoring FRC can help optimize respiratory support and therapy following these procedures.

Related Experiment Videos

Last Updated: Jul 2, 2026

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics
12:09

Ex Vivo Porcine Experimental Model for Studying and Teaching Lung Mechanics

Published on: April 19, 2024

Area of Science:

  • Critical Care Medicine
  • Respiratory Physiology
  • Postoperative Care

Background:

  • Endotracheal suctioning is a common procedure in postoperative cardiac surgery patients.
  • Understanding its impact on respiratory mechanics is crucial for patient management.
  • Functional Residual Capacity (FRC) is a key indicator of lung volume and respiratory function.

Purpose of the Study:

  • To evaluate the effects of three distinct endotracheal suctioning methods on FRC.
  • To compare closed suctioning (pressure-controlled ventilation vs. volume-controlled ventilation) and open suctioning.
  • To determine if suctioning method influences FRC changes in cardiac surgery patients.

Main Methods:

  • A crossover study design was employed with 20 postoperative cardiac surgery patients.
  • Patients underwent three randomized suctioning procedures: closed suctioning (PCV), closed suctioning (VCV), and open suctioning.
  • FRC measurements were taken pre- and post-suctioning (20 minutes after intervention).

Main Results:

  • All three endotracheal suctioning methods resulted in a reduction of FRC.
  • The decrease in FRC was observed regardless of the specific suctioning technique used.
  • Individual patient responses varied, with some experiencing significant FRC changes.

Conclusions:

  • Endotracheal suctioning consistently reduces FRC in postcardiac surgery patients.
  • The choice of suctioning method does not appear to alter the overall effect on FRC.
  • Routine FRC monitoring may enhance respiratory therapy optimization in this patient population.