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Related Concept Videos

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...
Respiratory Volumes and Capacities I01:26

Respiratory Volumes and Capacities I

Assessing the respiratory rate and rhythm for a complete minute is crucial for evaluating the breathing pattern. Even a minor increase in the patient's average respiratory rate, by as little as three to five breaths per minute, is an early and vital indicator of respiratory distress. Patients with a respiratory rate exceeding twenty-four breaths per minute require close monitoring to determine the physiological alterations. This careful observation is essential for prompt recognition and...
Cardiopulmonary Resuscitation II: ACLS Airway Management01:22

Cardiopulmonary Resuscitation II: ACLS Airway Management

Airway management is a key skill in emergency and critical care settings, as maintaining a clear airway is essential for adequate oxygenation and ventilation.Head Tilt-Chin Lift TechniqueThe head tilt-chin lift maneuver is an essential technique primarily used in patients without suspected cervical spine injuries. To perform this maneuver, one hand is placed on the patient’s forehead, and gentle pressure is applied backward to tilt the head. The fingertips of the other hand are positioned under...
Endoscopic Studies I: Bronchoscopy and Thoracoscopy01:30

Endoscopic Studies I: Bronchoscopy and Thoracoscopy

Endoscopy is a non-surgical medical technique used to examine a person's internal organs and vessels. This lesson will focus on two types of endoscopic studies: bronchoscopy and thoracoscopy.
Bronchoscopy
Description
Bronchoscopy is a procedure that involves direct visualization of the larynx, trachea, and bronchi for diagnostic and therapeutic purposes. A flexible fiber optic or rigid bronchoscope is used to carry out the procedure. The fiber-optic bronchoscope is more frequently used due to...
Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques01:30

Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques

Airway management is essential in emergency and surgical medicine, ensuring ventilation and oxygenation in patients who cannot maintain their own airway. Clinicians use a range of techniques and devices to secure the airway, depending on the patient’s condition and the clinical context. Key methods include endotracheal intubation, rapid sequence intubation (RSI), supraglottic airway devices, and advanced visualization aids. In cases where these approaches fail, surgical airway interventions are...
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:

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Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship
08:25

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Published on: January 8, 2019

Dynamic airway evaluation with volume CT: initial experience.

Ute Wagnetz1, Heidi C Roberts, Taebong Chung

  • 1Department of Medical Imaging, University Health Network, Toronto General Hospital, Toronto, Ontario, Canada. Ute.Wagnetz@uhn.on.ca

Canadian Association of Radiologists Journal = Journal L'Association Canadienne Des Radiologistes
|January 12, 2010
PubMed
Summary
This summary is machine-generated.

A novel multidetector computed tomography (MDCT) technique effectively diagnoses tracheomalacia by assessing dynamic airway collapse during exhalation. This low-dose imaging provides a comprehensive evaluation of central airway dynamics.

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Area of Science:

  • Medical Imaging
  • Radiology
  • Pulmonology

Background:

  • Tracheomalacia, a condition characterized by abnormal tracheal cartilage, can lead to airway collapse.
  • Accurate diagnosis is crucial for effective patient management and treatment strategies.

Purpose of the Study:

  • To prospectively evaluate a novel multidetector computed tomography (MDCT) technique for diagnosing tracheomalacia.
  • To assess the utility of a dynamic expiratory low-dose MDCT protocol using a 320-row unit.

Main Methods:

  • Six adult patients with suspected tracheomalacia underwent MDCT imaging on a 320-row unit.
  • Low-dose parameters and dynamic expiratory acquisition were employed.
  • Airway lumen cross-sectional area and volume were analyzed at key locations.

Main Results:

  • All 6 patients demonstrated evidence of tracheomalacia.
  • Proximal tracheal collapse occurred later than distal collapse.
  • Airway collapse was most frequent at the aortic arch level; 50% had diffuse narrowing.

Conclusions:

  • Four-dimensional (4D) imaging with 320-row MDCT is a viable and comprehensive method for diagnosing tracheomalacia.
  • This technique provides detailed assessment of dynamic airway behavior during expiration.