Diaphragmatic Excursion
Diaphragmatic Excursion - Related Videos
05:51
Diaphragmatic Ultrasound in Adults: Image Acquisition and Interpretation
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Cited by 2 •
2025
Point-of-care ultrasound (POCUS) is an essential technique for screening for diaphragmatic dysfunction due to its portability, non-invasiveness, and real-time imaging capabilities. Although current diaphragmatic POCUS protocols exist, they suffer from poor interoperator reliability and lack consensus guidelines. Here we describe a technique that is reproducible and simple to perform.
07:12
Diagnostic Ultrasound Imaging of Mouse Diaphragm Function
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Cited by 7 •
2014
Diagnostic ultrasound imaging has proven to be effective in diagnosing various respiratory diseases in human and animal subjects. We demonstrate a comprehensive ultrasound protocol utilized by Dr. Zuo's lab to analyze diaphragm kinetics specifically in mouse models. This is also a non-invasive research technique which can provide quantitative information on mouse respiratory muscle function.
13:27
Osteopathic Manipulative Treatment as a Useful Adjunctive Tool for Pneumonia
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Cited by 50 •
2014
Pneumonia is one of the top ten leading causes of death in the U.S. Osteopathic manipulative techniques (OMT) may be utilized as an adjunctive therapy in the treatment of pneumonia to enhance biomechanical and immune function; and ultimately, to reduce hospital stay, duration of antibiotics, incidence of respiratory failure, and mortality. In this video-article, we will review randomized controlled studies on the use of OMT in pneumonia patients, as well as demonstrate specific hands-on...
15:58
Using Point of Care Ultrasound to Augment Acquisition of Physical Exam Skills: Organs
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2023
Source: Joseph H. Donroe, Rachel Liu; Yale School of Medicine, USA Point of care ultrasound (POCUS) is used by clinicians for diagnosis, ongoing monitoring, and/or procedural guidance at the time of patient care. Many medical schools are now teaching POCUS as a part of their basic clinical skills training, in addition to history, physical exams, and clinical reasoning. Besides being an independent skill, POCUS is also an incredibly useful tool for augmenting the teaching and learning of the...
14:13
Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
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Cited by 34 •
2014
Coordinate mapping is a method of documenting salient features of hyolaryngeal biomechanics in the pharyngeal phase of swallowing. This methodology uses image analysis software to record coordinates of anatomical landmarks. These coordinates are imported into an excel macro and translated into kinematic variables of interest useful in dysphagia research.
FAQs
The key mechanical change is a shift in diaphragm position between inspiration and expiration. When the muscle contracts, it moves downward, enlarging thoracic volume and supporting inhalation. When it relaxes, it moves upward as thoracic volume decreases during expiration. This directional cycle links measured displacement with the diaphragm’s contribution to respiratory muscle performance.
Diaphragmatic excursion is useful because it connects an observable movement with respiratory muscle function. A clinician can examine how the diaphragm’s displacement changes as breathing performance changes. This makes the measurement relevant when assessing possible weakness or deterioration in patients with impaired breathing over time.
Ultrasound assessment in the subcostal view allows clinicians to examine diaphragmatic displacement noninvasively. Because the assessment can be performed at the bedside and repeated, clinicians can compare findings during ongoing care. This supports monitoring of respiratory performance and helps place a movement measurement in the context of changing clinical status.
Changes in measured excursion can be clinically meaningful because they may indicate altered diaphragm performance. In clinical care, this measurement contributes to evaluation of diaphragmatic weakness, respiratory failure, and neuromuscular disease. It helps connect a respiratory muscle finding with the patient’s broader assessment of breathing.
When considering ventilator weaning, diaphragmatic excursion can provide information about respiratory muscle performance during evaluation of readiness. Clinicians may use the measurement as part of assessing whether the patient can support the next stage of care. Its bedside, repeatable nature also allows assessment to continue as the patient’s condition changes.
Repeated bedside assessment allows clinicians to track changes in diaphragmatic movement over time. This is useful when respiratory performance is evolving, because the assessment can be performed again without an invasive procedure. Serial measurements support monitoring and provide information that can contribute to clinical decision-making as the patient’s respiratory status changes.