2023年11月15日 · Extrathoracic upper airway obstructions are not affected by changes in intrathoracic pressure and may be caused by head, neck, nasal, oropharyngeal, laryngeal, or tracheal tumors; upper airway tracheomalacia; and infectious and degenerative conditions.

What does extrathoracic mean? This dictionary definitions page includes all the possible meanings, example usage and translations of the word extrathoracic. Outside the chest. The thoracic cavity (or chest cavity) is the chamber of the body of vertebrates that is protected by the thoracic wall (rib cage and associated skin, muscle, and fascia).

2024年3月4日 · Asthma is a lifelong disease that affects airflow. Symptoms include airway swelling, hyperreactivity, and making more mucus. They can cause coughing, wheezing, shortness of breath, and tightness...

Form of airway obstruction in which the site of airway narrowing is above the thoracic inlet; can be variable (reduction in inspiratory but not expiratory flows) or fixed (reduction in both inspiratory and expiratory flows). Want to thank TFD for its existence?

Upper airway obstruction is less common than lower airway obstruction; however it can be suggested by spirometry. Upper airway obstruction includes variable extrathoracic obstruction, variable intrathoracic obstruction, and fixed intra- or extrathoracic obstruction.

2017年1月11日 · A variable extrathoracic airway obstruction increases the turbulence of inspiratory flow, and intraluminal pressure falls markedly below atmospheric pressure. This leads to partial collapse of an already narrowed airway and …

Extrathoracic definition: (medicine) Outside the <a>chest</a>.

2017年12月7日 · The anatomy of the respiratory system can be divided into 2 major parts, airway anatomy and lung anatomy. Airway anatomy can be further subdivided into the following 2 segments: The extrathoracic...

2024年3月6日 · Variable extrathoracic obstruction will cause selective flattening of inspiratory airflow. Variable intrathoracic obstruction will cause selective flattening of expiratory airflow. A fixed lesion located anywhere will cause flattening of both inspiratory and expiratory airflow.

Occult chronic upper airway obstruction is an unusual cause of the symptom complex of wheezing dyspnea. If unrecognized, appropriate therapy will be delayed and the results may be disastrous.