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Measuring Diaphragm Thickness and Function Using Point-of-Care Ultrasound

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[Diaphragm and skeletal muscle dysfunction in COPD].

M-A Caron¹, R Debigaré, P N R Dekhuijzen

¹Centre de recherche, institut universitaire de cardiologie et de pneumologie de Québec, université Laval, 2725 chemin Ste-Foy, Québec, Canada.

Revue Des Maladies Respiratoires

|December 14, 2011

Summary

This summary is machine-generated.

Skeletal muscle alterations in chronic obstructive pulmonary disease (COPD) affect both limb (quadriceps) and respiratory (diaphragm) muscles. Differences in these changes suggest local factors, not just systemic ones, influence COPD-related muscle dysfunction.

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Area of Science:

Pulmonary Medicine
Muscle Physiology

Background:

Chronic obstructive pulmonary disease (COPD) is associated with significant skeletal muscle alterations.
These changes contribute to increased patient morbidity and mortality.

Purpose of the Study:

To review structural and biochemical modifications in limb (quadriceps) and respiratory (diaphragm) muscles in COPD patients.
To compare and contrast muscle changes in the quadriceps and diaphragm to understand COPD-related muscle dysfunction mechanisms.

Main Methods:

Literature review of studies on skeletal muscle changes in COPD.
Comparative analysis of alterations in quadriceps and diaphragm muscles.

Main Results:

Both quadriceps and diaphragm muscles exhibit structural and biochemical modifications in COPD.
Discrepancies exist in the specific alterations between these two muscle groups despite a shared systemic environment.

Conclusions:

Phenotypic differences in muscle alterations suggest that local microenvironmental factors play a role alongside systemic factors in COPD.
Potential signaling pathways involved in COPD-induced muscle dysfunction are discussed.