Document Detail

Characteristics of exercise-induced intrapulmonary arteriovenous fistula in patients with unexplained exertional dyspnea.
MedLine Citation:
PMID:  20849478     Owner:  NLM     Status:  In-Process    
Dynamic appearance of intrapulmonary arteriovenous fistula (AVF) during exercise may be associated with unexplained exertional dyspnea (UED) and can be diagnosed with an agitated saline contrast study during exercise echocardiography. However, the occurrence of AVF during exercise in patients with UED has not been well described. Thus, the frequency of exercise-induced intrapulmonary AVF in the outpatients with UED was retrospectively analyzed. Thirty-nine outpatients (age: 53 ± 12, 33 female) with UED underwent symptom-limited supine bicycle exercise echocardiography. Ten patients (26%) developed exercise-induced intrapulmonary AVF. Patients with and without AVF showed the similar peak exercise heart rate, systolic blood pressure, and rate-pressure product. The patients with AVF demonstrated a small but significant decrease in arterial oxygen saturation with exercise as compare to baseline (95.6 ± 2.8% at peak, vs. 97.5 ± 2.5% at baseline, P < 0.05 with a paired Student t-test). Our study suggests that exercise-induced intrapulmonary AVF is relatively common in the outpatients with UED and associated with mild exercise desaturation; however, the mechanism of desaturation could not be determined by this study. Further investigation to characterize and determine the clinical significance of AVF is warranted.
Stephanie J Kelly; Shalabh Singhal; Jean M Elwing; Yukitaka Shizukuda
Related Documents :
12714348 - Contractile leg fatigue after cycle exercise: a factor limiting exercise in patients wi...
18619828 - Does correction of exercise-induced desaturation by o(2) always improve exercise tolera...
19305238 - Interval training versus continuous training in patients with chronic obstructive pulmo...
18408968 - Effects of 3-week outpatient pulmonary rehabilitation on exercise capacity, dyspnea, an...
15140778 - Management of osteoarthritis (oa) with an unsupervised home based exercise programme an...
16449868 - Cardiac autonomic modulation during recovery from acute endurance versus resistance exe...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Echocardiography (Mount Kisco, N.Y.)     Volume:  27     ISSN:  1540-8175     ISO Abbreviation:  Echocardiography     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8511187     Medline TA:  Echocardiography     Country:  United States    
Other Details:
Languages:  eng     Pagination:  908-13     Citation Subset:  IM    
Copyright Information:
© 2010, Wiley Periodicals, Inc.
Health Alliance, Cincinnati, OH, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Original Investigations. Potential faces of patent foramen ovale (PFO PFO).
Next Document:  Echocardiographic study of a Mestizo-Mexican population with Marfan syndrome.