A patient with a pulmonary arteriovenous fistula (PAVF) may present with a number of clinical and laboratory findings.
Clinical findings:
(1) fatigue
(2) dyspnea
(3) chest pain
(4) hemoptysis
(5) syncope
Findings on physical exam:
(1) bruit on chest auscultation
(2) cyanosis
(3) digital clubbing
Laboratory findings:
(1) polycythemia (if chronic)
(2) hypoxemia that does not improve with administration of oxygen at an FIO2 1.0.
