Does the bronchial circulation contribute to congestion in heart failure?

Maile Ceridon, Adam Wanner, Bruce D. Johnson

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Pulmonary congestion is a hallmark feature of heart failure and is a major reason for hospital admissions in this patient population. Heart failure patients often demonstrate restrictive and obstructive pulmonary function abnormalities; however, the mechanisms of these changes remain controversial. It has been suggested that the bronchial circulation may play an important role in the development of these pulmonary abnormalities and in the symptoms associated with pulmonary congestion. Congestion may occur in the bronchial circulation from either a marked increase in flow or an increase in blood volume but with a reduction in flow due to high cardiac filling pressures and high pulmonary vascular pressures (a stasis like condition). Either may lead to thickened bronchial mucosal and submucosal tissues and reduced airway compliance resulting in airway obstruction and restriction and a lack of airway distensibility. These structural changes may contribute to "cardiac asthma" and dyspnea, characteristic features common in HF patients. Thus the bronchial circulation may be a potential target for therapeutic interventions. The aim of this paper is to review factors governing the control of the bronchial circulation, how bronchial vascular conductance may change with HF and to pose arguments, both supporting and in opposition to the bronchial circulation contributing to congestion and altered pulmonary function in HF. We ultimately hypothesize that the engorgement of the bronchial circulatory bed may play a role in pulmonary function abnormalities that occur in HF patients and contribute to symptoms such as orthopnea and exertional dyspnea.

Original languageEnglish
Pages (from-to)414-419
Number of pages6
JournalMedical Hypotheses
Volume73
Issue number3
DOIs
StatePublished - Sep 1 2009

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Heart Failure
Lung
Dyspnea
Blood Vessels
Paroxysmal Dyspnea
Pressure
Patient Admission
Airway Obstruction
Blood Volume
Compliance
Mucous Membrane
Population

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Does the bronchial circulation contribute to congestion in heart failure? / Ceridon, Maile; Wanner, Adam; Johnson, Bruce D.

In: Medical Hypotheses, Vol. 73, No. 3, 01.09.2009, p. 414-419.

Research output: Contribution to journalArticle

Ceridon, Maile ; Wanner, Adam ; Johnson, Bruce D. / Does the bronchial circulation contribute to congestion in heart failure?. In: Medical Hypotheses. 2009 ; Vol. 73, No. 3. pp. 414-419.
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