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The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
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Updated: Apr 14, 2026

Bronchoalveolar Lavage BAL for Research; Obtaining Adequate Sample Yield
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[Alveolar hemorrhage].

A Parrot1, M Fartoukh2, J Cadranel3

  • 1Service de réanimation, hôpital Tenon, AP-HP, 75020 Paris, France; Centre expert en oncologie thoracique et de compétence en maladies rares, service de pneumologie, hôpital Tenon, AP-HP, 75020 Paris, France.

Revue Des Maladies Respiratoires
|April 21, 2015
PubMed
Summary
This summary is machine-generated.

Alveolar hemorrhage is a rare but serious condition causing respiratory failure. Diagnosis relies on bronchoalveolar lavage, differentiating autoimmune causes from others is crucial for effective treatment.

Keywords:
Capillarite pulmonaireGoodpasture's syndromeHémorragie intra-alvéolaireIntra-alveolar hemorrhagePulmonary capillaritisSyndrome de GoodpastureVascularitesVasculitis

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Area of Science:

  • Pulmonary Medicine
  • Critical Care
  • Immunology

Context:

  • Alveolar hemorrhage is a rare, life-threatening condition.
  • It can rapidly lead to acute respiratory failure.
  • Diagnosis may be challenging due to absent typical symptoms.

Purpose:

  • To outline diagnostic approaches for alveolar hemorrhage.
  • To differentiate between autoimmune and non-immune causes.
  • To guide therapeutic strategies based on etiology.

Summary:

  • Diagnosis is confirmed by bronchoalveolar lavage.
  • Key is distinguishing sepsis, autoimmune (vasculitis, connective tissue disease, Goodpasture's syndrome), and non-immune causes.
  • Treatment involves immunosuppressants (steroids, cyclophosphamide, rituximab) and plasma exchange for specific conditions.

Impact:

  • Facilitates timely diagnosis and management of alveolar hemorrhage.
  • Improves patient outcomes by guiding targeted therapy.
  • Highlights the importance of identifying underlying causes for effective treatment.